GoldenMotor.com Forum
General Category => Reviews => Topic started by: GoldenMotor on December 25, 2009, 01:08:35 AM
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Please give us more feedback. Please post ONLY:
1)Negative (with reasons)
i.e. This is a piece of junk, bad service, scratched surfaces and it doesn't even run properly. The speed is only.... blah blah blah... etc.
2)Ideas (improvements)
i.e. I think it needs more speed and be available in different rim sizes. I think it needs to come in Pink and White colors. I think you should add a pan to the sides so that it can cook eggs while I'm riding it to work.
3)Positive (with examples)
i.e. Oh yeah, it saves me 8 hours a week riding it to school. Now that I want to ride my bike, I always insist on helping my mom on buying her groceries and she says I'm a good boy. It has fulfilled my Ghost Rider fantasies.
Ok... let's go.
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Ordered 10/20, paid MORE than they cost last time I checked (a week ago) ..still waiting for delivery :P
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..truly expected to have been in the 3rd category many weeks ago..
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Finally received my MP today. The wheel is ~3/8" off center!
This is NOT acceptable >:(
After 2+ months of waiting, I expected absolute perfection! Now I need to pay a bicycle shop to have this wheel rebuilt?! Oh, goody.
I feel totally clowned by GM :P
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Please give us more feedback. Please post ONLY:
1)Negative (with reasons)
i.e. This is a piece of junk, bad service, scratched surfaces and it doesn't even run properly. The speed is only.... blah blah blah... etc.
2)Ideas (improvements)
i.e. I think it needs more speed and be available in different rim sizes. I think it needs to come in Pink and White colors. I think you should add a pan to the sides so that it can cook eggs while I'm riding it to work.
3)Positive (with examples)
i.e. Oh yeah, it saves me 8 hours a week riding it to school. Now that I want to ride my bike, I always insist on helping my mom on buying her groceries and she says I'm a good boy. It has fulfilled my Ghost Rider fantasies.
Ok... let's go.
Ideas, that's hard .. Wonder how many years or months they worked at the kits ...interface ;...sizing for all bikes;;; GOOD JOB :-)....but the number 1 problem I see here is trying to make everyone happy ...it's impossible .. I say keep doing what your doing the best.. Leave the ("Genuises") to design some of the toys that some people want .. BY ALL MEANS Please be Careful ..And THANK YOU ALL Golden Motors people for the magnificent product you have .. Please don't let the public and any little fallbacks discourage you ,,, PLEASE ...I may be nuts but I see one of these things FLYING .......soon? well sometimes you people have it in you ..
I love me pie, it came with all of that parts and pieces as was promised. I am a retired auto mechanic so not too smart with new things nor too dumb about basic thinking. Received the package within 1 week in South Florida .. Took my time assembling it so as to not make any dumb blunders maybe ,...I really enjoy assembling things like this .. I did make a couple of upgrades.
If there is any little thing I CAN DO FOR YOU over there Please let me know. I, like so many others, would like to be in on whatever you have coming in the future. Looks Real Exciting and I have no one holding me here.
Yours,
Don Johnson
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Not received yet, but tracking is ok. It will arrive by the weekend or next week, this depends on the border control. I just want to share one idea:
2)Ideas
On the dual pie setup the throttle by default acelerates just one of them, then the wires for the second controller pass by a swith, so when activated it will control the second motor too. So I can choose when I really need extra power, It could improve the range of a two motor setup!
I'm not sure if this is a real advantage, but sound cool, like a 4x4 car that I can shift between FWD or 2WD.
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http://www.youtube.com/watch?v=mtqe-mod-zc
haha ;)
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1)Negative (with reasons)
- It is not possible to center the rims properly with the bike frame! You really need to look up for this!
- The package did not have an professional look, it came very well protected, but did not have the appearance and cleanness at the same level as the product!
- The hot glue that fix the battery cells pack inside the case cames loose during transportation, try to use some spacers between the cells plastic supports and the caps, this will make the hot glue unnecessary.
- All the connectors should come ready to use, even the connectors to the front and rear lights (not only the feeding, but the connector for both lighs and button), to be really plug and play!
- The manual contains instructions for the magic controller and this make a lot of confusion about the MP functions. The manual also is too simple and do not details things like the correct position of the washers, warning o be care in fixing the cable to not touch the disk brake, use of the battery and recharger, etc.
- The battery slide plate did not came with the screws and nuts, the locking area was not very good (the lock pin did not pass it trhough, just half way of a 1mm thick!) and the battery makes some noise wile shaking at the plate, see the ideas for the solution.
- The battery cable and the motor cable should came already soldered or with connectors ready to plug one on another, not everybody have the equipment and skills to do so and in Brazil was impossible to find these type of connectors.
- the rack (001) is not so good as it type of fixation is very rare on new bikes, but the rack 002 solves it for good, so this is not a real problem anymore.
2)Ideas (improvements)
- It should came with some wide velcro to wrap around the battery and rack to help keeping the battery from shaking on the sliding plate. I tested it and now the ride is much smoother.
- I know that the BMS and controller have a lot of protective circuits, they are great, but a fuse at the battery case would be VERY nice. The fuse could be at the battery cable or in the case (more convenient)
- You could use bluetooth, not to control the pie, but to send feedback information like speed, distance, power consumption, status of malfunctions, battery status like voltage, total use hours/km/Wh/Ah, etc. Like a Cicle Analyst but much, much, better! Would be like the brains of the pie and could be the way to program some functions as speed limits, etc.
- The thumb throttle looks like it has been designed to be used at the left hand, a mirrored version of the actual would be better to use with the right side
- The shaft MUST BE HARDENED (some type of heat treatment or other surface hardening ways), is too soft!!!
- Anodized aluminium instead of painting, this will increase the general strength of the motor and will have a better looking product!
- The power brake levers are not good for disk brakes or V-brakes, you should have specific ones
3)Positive (with examples)
Really easy to install
Really good quality parts
Good looking
Serial numbers on the battery, charger. Good information and warning adehsives where they are necessary (battery, plug polarity, etc)
Nice stainless steel screws with locking washers.
Good cables, flexible enough.
Easy to use, easy to recharge the battery, easy to put in and out the battery from the bike.
Nice torque!!!
I really do not have all the words to say how good it is and how I'm satisfied for now. It is so natural to ride the converted bike that I fell I had it for years, or at least should had it long before. I'm sure will change my cost and heath for much better. It is very fun!
Yao, You know I have the better interest to the improvement of your products, please feel free to ask me more. I'm a Mech. Engineer and for sowe can have a nice technical chat. All the things at the negative parts are easily solved (except for the rim centering problem, it could need a new design for this component) I listed them all so we can have even better products from GM!
I hope we have a great future together!
link for the review: http://goldenmotor.com/SMF/index.php?topic=1623.0
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About the package.
Here are some examples. I do not know the sources and/or manufacturers of theese photos, they are just for example of better packaging using Styrofoam
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Dear Yacamin,
We really appreciate your feedbacks and suggestions on improvements of our products. We will implement them as quick as possible to make our products better and better.
We do listen all your feedbacks and comments all the while. That's the reason we can come out good products like MagicPie kit and battery packs.
Thanks again for your support.
Golden Motor
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Well here is my feedback and I am sure you can tell by username I am not impressed with this unit.
I bought this thing just before Christmas from Gary Salo @ Golden Motors.ca
I rode it a total of 3 times and less then 20 kms and the thing just died.
I emailed Tom and he had me test it by bypassing the controls to see if the problem was my wiring or in the controller.
The test result show and I quote from Tom "Your controller is broken"
I emailed Tom back to have this thing exchanged.....really I would like a refund but don't think that is possible.
Now it is day 2 and TOM has not bothered to email me back.
I have been in contact with Gary and he also has had no luck hearing from Tom either but did assure me he would call tonight.
I also have to say the motor is extremely slow, not what I what I had hoped for when paired with a lifepo4 36 15 amp battery.
Between the performance and the fact that it broke after extremely light use for a short time( I didn't even jump a curb)
I would NOT recommend the Magic Pie, once the controller fries you have to replace the whole unit. Not to mention the beating the controller must take between the added extra heat from the motor and the R.P.M.'s it has to endure.
I would though recommend Gary from Goldenmotors.ca as he has been very co-operative and a pleasure to deal with, a real good honest guy and great representative of the company every step of the way, even now that I am having issues with the unit.
I am sure they have other products that are great but unfortunately The Pie not so great.
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and the R.P.M.'s it has to endure
The controller in the MP doesn't actually move. Its fixed to the stationary axel and stators and its the magnets and outer casing/spokes and wheel that moves around them.
muzza.au
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The test result show and I quote from Tom "Your controller is broken"
Now it is day 2 and TOM has not bothered to email me back.
Hello MP
Please have a little patience, with a new product there are bound to be some failures. Allthough I understand your frustration, It has only been 2 days since it failed and we are dealing with a company based on the other side of the planet. I do believe that Philip is out of the country on business and probably a few other key decision making people. They are exactly 12 hours opposite our time so Ill be calling after 10pm If I do not get a response in email by then. I will be in touch as soon as I know anything.
I do thank you for your positive comments though :)
Gary
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And the heat management is nice. I live in Brazil and for the last 60km of MP riding the temperature here was about 30ºC up every day. They have a clever design to manage the heat issue. You really get bad luck, I hope the warranty solves it but as the factory is in China, and you know it when you bought, It will take some time to solve.
I was reading for a long time before choose Golden Motor and the MP kit to buy (and test, I'll be a Dealer very soon), all the problems I found that other clients had with their motors or batteries was solved by the warranty by replacement of the unit, was not quick, but ALWAYS solved.
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Hello MP,
I have confirmation from 2 people at GM HQ that the "behind the scenes" decision maker is away until Friday (Thursday night our time). Hang in there another day.
Gary
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I would though recommend Gary from Goldenmotors.ca as he has been very co-operative and a pleasure to deal with, a real good honest guy and great representative of the company every step of the way, even now that I am having issues with the unit.
I have the "Green Light" to replace your wheel. I just need the old one back so we can figure out to prevent future failures and improve the product. I will contact you in private to arrange replacement.
I know from private email you sent me you feel this process was long but you only contacted me on the afternoon of the 25th and it is now the 28th. This does seem to be a reasonable time frame to me.
Gary
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Please give us more feedback. Please post ONLY:
1)Negative (with reasons)
i.e. This is a piece of junk, bad service, scratched surfaces and it doesn't even run properly. The speed is only.... blah blah blah... etc.I love me pie it came with all of that parts snd piecec ai was promised . I am a retired auto mechanig so not too smart wityh new things nor too dumb about basic thinking. Received thr packagr within 1 week in south Florida .. Took My time assembleing it so as to not make any dumb blunders maybe ,...I really enjoy assembleing things like this .. I did make a couplr of upgrades . Ideas
2)Ideas (improvements)
i.e. I think it needs more speed and be available in different rim sizes. I think it needs to come in Pink and White colors. I think you should add a pan to the sides so that it can cook eggs while I'm riding it to work.Ideas thats hard .. Wonder wow many years or months thet worked at the kits ...interface ;...sizing for all bikes;;; GOOD JOB :-)....but the number 1 problem I see here is trying to make everyone happy ...it's impossable .. I say keep doing what yiour doing the best.. Leave thr ("Genuises") to design some of the toys that some people want .. BY ALL MEANS Please be Careful ..And THANK YOU ALL Golden Motors people for the magnificent product you have .. Please don't let the public and any little fallbacks discourage you ,,, PLEASE ...I may be nuts but I see one of these things fLYING .......soon? well sometime you people have it in you ..
If there is any little think I CAN DO FOR YOU over there Please let me know . I like so many others would like to be in on whatever you have coming in the future . Looks Real Exciteing and I have no one holding me here. Yours, Don Johnson
3)Positive (with examples)
i.e. Oh yeah, it saves me 8 hours a week riding it to school. Now that I want to ride my bike, I always insist on helping my mom on buying her groceries and she says I'm a good boy. It has fulfilled my Ghost Rider fantasies.
Ok... let's go.
Hello Yao , I am Confused . I never wrote all of that negative stuff at the top of this post that appears to be from me ... This must be some kind of mistake on your end at your internet level I would hope you would fix it so I don't look like a jackass.. I love my Magic Pie and every part of the transaction was good . PLEASE fix this post so it doesn't look like I am complaining ..
To be completely honest I did ask about some possible loose spokes and also about what seems to be double shipping charges for the headlite/tailite assemblies. But I have not written any terrible post like it looks like above .. I only hope you will fix it..
Thanks again for taking my post here and THANK YOU for the great TOY/Bike I have now ... Don J.
Edited by Moderator
The text now shown in blue is the original quote from Yao.
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Don, that text you quoted looks like an example from yao... not your text
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Don, that text you quoted looks like an example from Yao... not your text
GM Brazil, It was actually a combination of the two.
Don, you appear to have typed your reply within the quote, so I have rearranged your text in the original post so it is now correct. (Hopefully)
You can see it here. (http://goldenmotor.com/SMF/index.php?topic=1613.msg8351#msg8351)
If you wish to alter anything, click the Modify option above your post and then edit as required.
To make sure it is displayed as you intended, you can preview it as often as you like, but don't forget to click the save button when you are happy with the results, or all your time and effort will have been wasted! ;)
Alan
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1) Negative: The MP we received would not respond to the throttle out of the box. After getting some assistance here and from China and quite a bit of time it finally took off. However the problem is caused by a short in the controller wire at the motor. This is unfortunate as it will recur at times due to the motor taking a jolt, like a bump in the road, although a well placed zip tie seems to keep it in check for the most part. I suppose that we will have to take the motor apart at some point here and fix it properly.
The MP we got for our project is the 16" front wheel version and the fact that there are no spokes, as the rim is mounted directly to the MP, it is impossible to center the wheel in the fork without shimming at the axle. This is due to the disc brake mount and in the future we will spec wheels that do not have this as it is not necessary for our needs anyway.
Also because of the rim being directly mounted to the motor the valve stem hole exits the bottom side of the rim instead of straight down as on a normal rim. The result is that the valve stem sticks out to the side, and is not adjustable in length, and because the hole is drilled on the non disc side it is long enough to hit the fork of our project.
The regen feature is way to strong for the smaller sized 16" wheel and locks it up upon application. There is also a good deal of drag with the throttle off which is to be expected with a non geared motor, but it is more than we expected. In fact a disc mount on this motor is not necessary at all we feel due to the this.
2) Ideas: Drill the valve stem hole on the opposite side of the rim.
Employ some sort of variable control for the regen.
3) Positive: The torque of the 16" wheel is very good and is working well for our needs as we had hoped it would. With a 48V 12AH LiFePo4 battery our initial trials have shown that top speed is 32 kmh, but it gets there in relatively short order. With constant pedal power applied to stay on top of the motor speed we are getting 30+ miles for 8 AH of draw over variable terrain with a good amount of hills. But unable to average much above 30 kmh due to the aforementioned drag not allowing our bike to move without resistance to get it much beyond 34 kmh after releasing the thottle on downgrades.
In conclusion we will probably not be using the MP in the future for our needs but it is a good enough system that many will benefit from it once they get the bugs worked out.
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Gary came through with the replacement wheel as promised.
The first wheel must have been defective from the start, this one does not make any grunting noises from the start-up, like the old one.
Thanks Gary.
Also Gary what I said was I thought I was dealing with a dealer from Canada who approved the warranty work himself, I was wrong.
My other issue was that I had to wait for the "behind the scene guys" to decide whether or not my controller would be warranted, which should have went without saying, hence the 1 year warranty.
I had no problem waiting, the response time was great and the replacement was at no cost to me.
Hopefully I will get more then 20kms off this one...10 kms in so far.
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The valve stem sticks out to the side, and is not adjustable in length, and because the hole is drilled on the non disc side it is long enough to hit the fork of our project.
2) Ideas: Drill the valve stem hole on the opposite side of the rim.
It appears to be drilled on the correct side here:
(http://goldenmotor.com/SMF/index.php?action=dlattach;topic=1430.0;attach=1408;image)
The regen feature is way to strong for the smaller sized 16" wheel and locks it up upon application.
Employ some sort of variable control for the regen.
I totally agree with the variable regen, and have already suggested it:
Yao,
I know you're all very busy at the moment, but I wanted to make some suggestions, which your technical guys at GM might want to think about:
Would it be possible to modify speed controllers (Magic Pie included) to allow variable regen?
This could be controlled either by using an additional thumb throttle to control the amount of braking, or preferably with a purpose made bi-directional (dual action or two-way) twist throttle .
It should be easy enough to accomplish using twin hall sensors and 4 wires instead of 3 and would obviously need to spring back to the mid position when released.
Simply twist backwards for throttle, or twist it forward for variable regen braking. (Or to operate reverse when you're already stopped.)
I think this would be far better than the existing "All or Nothing" regen, especially with smaller wheels when regen braking can sometimes be too much. (Or on a dual motor setup).
The cruise control could also be modified to also give a constant braked speed using variable regen braking.
If your cruise speed was set at 15mph, regen would automatically cut in if this speed was exceeded on downhill stretches, instead of simply stopping the power to the motor, which I presume is the current method. (No pun intended!)
A dual action throttle could be used for forward and reverse without the need for a separate switch, and could also allow a conventional "twist back to accelerate" action, if it is fitted on the left hand side of the handlebars. (i.e. when twist type gears are already fitted on the right)
If it is possible, it would be nice to see it incorporated.
Does anyone else think this might be a useful improvement?
I'd like to have your opinions and/or suggestions.
Alan
Mabman, if you think the regen is too strong with a 48V pack, then don't try it on 24V:
I've been doing some bench testing with my Magic Pie, and when I try to turn the wheel by hand with regen switched on, it turns much slower and feels like twice the resistance.
With a single flick of the wheel, it produces over 3Amps on 24V, but only just over 1Amp on 48V for the same speed flick.
So I'm expecting the difference between using regen on 24V and 48V at speed to be quite noticeable. ;)
Time will tell.
Alan
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Yes it is on the correct side in that photo. Guess it was just my luck to get the one they drilled on the other side. Really a simple problem with a simple solution.
I have been undergoing trials here treating my shorted controller cable with just the right amount of zip ties to keep it in just the right spot. The motor is doing all that I ask of it on the steep hills here albeit with pedal input also as stated. But that is ok by me as I don't mind pedaling.
Yesterday I went 35 miles and averaged 11 wh per mile, once again with a steady pedaling effort, but not enough to sweat, in a gear range from 80"es to 106"es. Brought my 12AH LiFePO4 battery down 8 amps so I think I could get 40 out of it perhaps by hyper mileing it and favorable winds. Average speed was 18 mph.
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Also Gary what I said was I thought I was dealing with a dealer from Canada who approved the warranty work himself, I was wrong.
When you sent me an email that you had an issue I called you immediately and told you "I have to get an OK to replace your wheel" and that is how we started the process of replacement. Maybe you forgot this or misunderstood but I am glad I could get your wheel replaced within a week. I don't know of any other warranty issue that was solved this quickly.
My other issue was that I had to wait for the "behind the scene guys" to decide whether or not my controller would be warranted, which should have went without saying, hence the 1 year warranty
I don't recall anyone stating you were not having a warranty issue, only that we had to get approval before it could be replaced. Most companies operate this way. Your intent seems to be to make me look bad, but I don't know of any way I could have given you better service from the time You ordered your wheel to the time it was replaced. Oh well, I hope your new wheel serves you well for many miles and look forward to seeing pictures in the Gallery as you really do have an awesome looking bike.
Take Care
Gary Salo
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http://www.youtube.com/watch?v=mtqe-mod-zc
haha ;)
Said removed by user?
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Made an order on March 2 this site http://www.devi-comfort.com
Ordered BIKE WHEEL WITH CONTROLLER, 700c REAR MAGIC PIE
Until now, the order is not sent.
The letters correspond to a very long time or not at all responsible.
They write that are not available, waiting for deliveries from China.
And it lasts 4 months old.
Had passed all reasonable period of time, during which the devil could bring bald.
I am angry, I have no words to swear.
Specially made an order in early spring.
I thought that put the engine and begin to ride in the late spring and now summer has begun, and the engine still no ((((((
Please, deal with this issue, such terms simply unacceptable.
Do not know when there will be shipped the goods.
It does no credit to either the seller nor you.
Now looking for where you can buy this product elsewhere.
And one more question.
Spokes what size (length) are used for the wheel size 700c?
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I've had my70Cm 24V MP for around six months and it gets used every day taking me down to my local Pub for a few sherberts. The journey is about 5 Miles (8KLM) there and back and quite hilly in parts. In addition, about twice weekly I ride it to my daughters place, also hilly and about 7 miles in total.
It has never missed a beat, but is not totally flawless.
Firstly, since I am in Australia where we have a law limiting us to 200KW of power I took the 24V option, I expected it to be very slow. It isn't, it takes off very quickly and seems to pull along at about 23 klm on the flat and it almost eliminates the hills.
Faults:
1) It has some loose metal in the wheel casing which rattles loudly, you can hear from quite a distance almost as if it was done deliberately.
2) One spoke has fallen off.
3) Dam near impossible to to fit it back on the bike after a flat tyre.
4) The regen is borderline dangerous on wet roads.
5) The only light on the twist throttle is red. The others don't work.
6) If there is a cruise control I don't know how to switch it on, OR I haven't wired it up right. This might be related to 5) Above.
Apart from that this is a terrific thing! I understand teething troubles but I cannot complain and in fact I wouldn't be surprised if this just keeps running for years!
My question is have we been given a price for MP Mark Two yet?
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5) The only light on the twist throttle is red. The others don't work.
6) If there is a cruise control I don't know how to switch it on, OR I haven't wired it up right. This might be related to 5) Above.
The single red light is because the throttle control you have is either a 36V or 48V unit instead of the correct 24V one.
Perhaps GM should have a voltage check box on the order form to enable the correct voltage throttle units to be supplied.
The cruise control should be wired to the red button above (or below) the green horn button. To operate the cruise control, simply adjust the throttle to give the required speed and then press the red cruise button once. If you release the throttle the motor should continue to run at the set speed, until you either press the red button again, or apply the brakes.
Alan
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1) stopped working after 200km. No answer from support yet. pedelec should not accelerate in curves while not pedaling. Batterie connector broken while unpacking. Front Led lamp only works if plus signal is connected on that connector which is also connecting to the bike frame ??? Documentation is very bad. What are 6 beebs comming from the controller. No information found. Pedelec mode where the motor only spins while pedaling not working....
2) pedelec should measure force on the pedal in order to calculate the needed motor support. Cabeling could improve.
3) The 4 rides to work were fantastic. unfortunately 200 dollar per ride is a bit to expensiv.
Hope I get my bike fixed soon.....
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Why don't you pre-solder all wires for front kits to something like this
(http://www.ecyck.com/uploads/wiring.gif)
I can bet that most of the bikes cable lengths would be max a foot apart. this would make installation much simpler and product more attractive. for rear kits you could do the same and sell extension cables of different lengths for people to choose from.
This would make kit more accessible to anyone since no soldering is required. Cable or parts not needed could be simply cut out (in the case someone does not like to use two brakes or cruse control).
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Hi there
I use 43 pcs of Magic Pie (1 x MP2 3 x MP3).
:) POSITIVE 1 :) :
Integrated controller and a good user interface of the programming software makes it easy to use.
:) POSITIVE 2 :) :
Torque is quiet good for a ungeared motor.
>:( NEGATIVE 1 >:( :
My 20 Inch MP3 was one of the first delivered. Andy Zhang from Golden Motor confirmed me, that there where some of the early pcs whose where delivered with a controller of max 25 amps continous. Then Johnson Liu (also from Golden Motor) told me, that it is not possible and why I note believe him. But I can't believe when I have the facts in front of me! So I had to order a new controller to use the MP4 on 30 amps. That's really NOT OK!!!
>:( NEGATIVE 2 >:( :
Paint of the 20 inch wheel was miserably! Therefore I get discount for two 26 inch wheels.
>:( NEGATIVE 3 >:( :
Slow and bad communication. I feel not taken seriously by GM!
I really hope I will make better experiences in the future! But maybe not possible with emploiees like that!
In good hope I wish you a merry christmas.
Heinz
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1)
Weel was nor aligned, had to painfully adjust spokes. Even afte there is a small bump noticeable when breaking.
Programming cable was broken, had to be replaced.
2)
Would like black plasric box for batteries wirh built in charger.
Also better deals on batteries
Faster shipment, sentral dealer in Europe
Better installation manual, better statement that torque bars are needed over 250W
Torque bars should be included
3)
Most enviromental and fun transport that exist
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The only bad thing with my mp3 ( 16" frount wheel) its out of center by 10-15mm
which wasn't said on the website :'(
other than that its awsome
It would be nice to offer a extension lead for the main harness in a variety of sizes
for scooter and trike users
and allso a plug on the battery lead like the mp2
(I ended up fitting a anderson conector to mine)
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Okay, got my rear MP III today in a C700 rim. :D
Programming: No problem this time :) Used Windows 8.1. Downloaded software from some site in Canada? :P
(Why not enclose the software on a memory stick with Golden Motor logo?)
Set down the amp to max. 25 in order to save my battery.
Installation: Fitted perfectly with regards to gears and 160mm brake disk, no adjustment or spacers needed :)
Testing: Bad weather now with rain so using the car ;)
Packaging and finish was excellent. Wheel was nicely balanced and installed, no issues. Good work.
Connected my two headlamps to the free wire red and black, now I got a light switch on my handle bar!
Cruise control works sweet.
Used white Vaseline inside contacts to avoid water ingress, also used white Vaseline on all treads.
Just be careful when tightening bolts and nuts if you use an aluminum frame, not to much not too little. Both is wrong.
This was my 2nd build, from before I have the MP2 that also works well.
Have posted a picture in the show-off section.
Would like to recommend the MP III rear to everybody considering an electrical motor for their bicycle :)
(Should have added this to the feedback tread, but now I can't remove it... ::))
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Hi I got the MP4, I used to have a china hub motor so I got a good insight of both
1)Negative
The wires, they are really long. It'd be great if we had a junction box as part of the kit so we could shorten them easily.
The spokes, I don't like them. I think it'd be better to have ticker one's like the ones on a 125 dirt bike or better again to have no spokes at all. But this maybe a kickback to my time with the Chinese E-hub. The spoke alignment was not true and the spokes would break off a lot.
The PAS wire. I don't like the location of it.
no 12v line. this would really help with getting lights and a horn as most devices are 12v's.
The 48v horn/light that is sold by golden motors is awful, It sound like the game "operation" It's embarrassing to use it. Replace it with a klaxon, That'll make everyone jump.
Availability. This is a big issue if your not in North America. I'm in Ireland and I've never seen one over here apart from my own. www.devi-motion.com (http://www.devi-motion.com) (Holland) and www.miromax.lt (http://www.miromax.lt) (Lithuania) were the only 2 re-sellers I found that were not ripping everyone off like the guy on ebay in France. FYI I went with miromax and they rock.
Upgrades. I got the MP4 but now I want the MP5, I've been tested and they said there's nothing wrong with me, But clearly there is.
2)Ideas
Bearings upgrade, Not that I'm having a bearings problem, but at the time of buying it'd be good if we could get the option of a upgrade
Better links on the website to Re-sellers around Europe.
12v line.
better cable management solution.
Thicker spokes or the spokes gone altogether.
free hat?
3)Positive
I love it. I will be getting the MP5 for my next build.
I use it to get to work 16km each way, takes me 30 min's or less, takes 45 min's in a car and 75 min's on the bus. the car and bus are off peek times too, But my MP is 30 mins regardless.
Also the MP is getting me into cycling for real. I've got a second Road bike for Fridays to get my fitness up.
She loves having the car when I'm at work.
The casting on the hub is sexy.
The wires and are good but the connections are great.
The forums, The people on these forums are a great help.
Packaging was better than the Chinese. But so was everything about the MP4.
It's so quite. the Chinese one was so loud, it sounds like it was winding up or something
I can't go back. getting to work is fun. But I do worry about the smug cloud and the effects on the environment ;D
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I rate my experience as excellent = proud to be MP owner. BUT the problems I have with breaking spokes is annoying.
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I live in the mountains of Norway with hard weather conditions. From the MP3 to the MP4. No problems. Fast delivery,
Very easy "hook up" (no ext controller with complicated wires). Took a severe beating (gravel roads with lots of pot holes in the summer and meter deep snow with minus 30 Celsius). I even easily sold the bikes after each season to buy the upgraded kit. I would say the quality (especially with the "upgraded harness") and ease of installing is far superior to any other direct drive system. It is the bike tour royale. I tried it on a bike with dual dampening (shocks in the back), this did not work well, better off with a center drive system. A better connection plug for the lights/horn is needed (not everyone is a maverick with the soldering iron).
A set-up with the engine AND the battery in the back (rear hub drive & rear rack)
with 48v 1000w, the front wheel will easily lift when you gun the throttle. This set up also yield a high center of gravity
(unless you do a "gary" config Chopper style with two brick batteries hanging low on each side of the rear wheel).
A better selection of down-tube batteries that ship world wide is a must! Better balance better ride.
Finding the required 25A discharge battery seems impossible.
With the MP5 build I decided to buy a 36v set-up (the 50kmh with the 48v set-up is a bit much on a bike).
Due to an accident with a shipped battery on a plane somewhere in 2016, my motor got here but the battery did not.
It is still a pain to get a battery shipped to Norway. Shipping a battery back to china is impossible.
I finally got the battery. but after installing it all with torque arms etc, the system was dead, no BAC display etc.
GM China says: I had to reprogram the controller for 36v (it comes default 48v from factory). Ok so I try do do that.
But since the system is dead I can not connect to the controller. Since the battery show 5 red dots, GM China says: controller dead, need new controller. So I get a new one (with blu-tooth). Getting the old controller out is a pain (heat
the outer ring gently with a hair dryer), I figured it was a threaded connection and turned the controller, resulting in
a ripped out HAL and spade connections. Just wiggle it gently straight up. This connection could use a revamp.
Then "we" conclude the battery must be dead since the new controller does not fire up. I buy another 36v battery
locally, the controller fires up (now with the fabulous app on my Samsung 6S). Now I can make my bike go from
off-road to legal 25km limit on the fly :) - Getting the new controller into this very tight fit motor "hole" proved to be
a major pain, much worse than getting the old one out. Even after watching Gary`s videos I managed to break one
of the spade tabs on the controller while forcing it in.
Since "customer support" is reduced to forums and help from peers (as is with most companies these days),
GM China stopped answering my e-mails when I asked if it was possible to solder the tab back on to the new controller.
The weird thing is that this forum does not appear to have a link on their website?
I solder the tab back on, put it all together, the app says "Hall protection", no motor function. The solder did not hold.
For kicks I try the old controller, now it works... programming vise. Not on the bike. Now I have to dismantle everything again to check the phase wire connections to the controller.
Be prepared to fiddle with it. All in all, despite having to make your own plug for lights it is far better than having to
configure external controllers + the hassle of wires everywhere. Keeping my fingers crossed, maybe with Alans help I`ll get this build done before the snow starts falling, just in time to put on snow tires.
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The Bluetooth android app is useless, it only connects on older android devices, anything from android 10 & above doesn't work at all - the Bluetooth won't connect. GM need to spend a bit of time updating their app & make it available on the play store - that way customers know the software is legit & up to date.
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Update ... I ride every day 5.6 miles for exercise and to keep me from "Locking up" ..I have bad Arthritis ..cannot walk much but the ride is 40 minutes of pure joy ..Sometimes I go 2 times a day ..Anyhow the front Magic Pie 1000 watt motor with the 52 volt battery has never let me down .. I set the cruise control to where I can Petal comfortably at 9-11 mph and just cruise along .. It's nice knowing I do have some power to get out of the way if I need to ...I am totally happy with all the products I have bought 3 Magic Pie setups ..and never a problem from them ..