GoldenMotor.com Forum
General Category => General Discussions => Topic started by: Just on February 24, 2013, 07:20:44 PM
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Hi All,
How is the GM Pie-3 on hills (climbing on)? Will it take 35% slip for 100m? Any other examples?
Thank you!
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Are you having a laugh Dmitryl, do you actually realise how steep a 35% gradient is?
Here's a picture that clearly demonstrates what a 35% hill really looks like:
(http://upload.wikimedia.org/wikipedia/commons/b/b8/DunedinBaldwinStreet_Parked_Car.jpg)
(http://www.arhservices.co.uk/GoldenMotor/emoticons/thinking.GIF)
A bike equipped with dual MPIIIs (and with the batteries ideally located over the front wheel) might be able to tackle it, but I wouldn't expect a single MPIII with a standard controller to be able to climb this much of a slope, not unless it had a very fit rider pedalling extremely hard to assist it. ;)
I'm sure Gary would be tempted to try his Townie up this hill if he lived a bit nearer to it:
(http://www.arhservices.co.uk/GoldenMotor/DualMPIII_zps11c9c401.JPG)
Riding down it would be a good test for the regen too. :-\
Alan
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Waw, Alan, is it you on the picture?
What's slop would a single MP III take?
Have you ever compared the MP III 48V kit (single wheel) with 48V mid-motors (let's say from Cyclone Motors)? Which one is more speedy? more powerful? (note that mid-motors are able to use a full range of the bike chainwheels).
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I'm sure Gary would be tempted to try his Townie up this hill if he lived a bit nearer to it:
(http://www.arhservices.co.uk/GoldenMotor/DualMPIII_zps11c9c401.JPG)
Riding down it would be a good test for the regen too. :-\
Alan
Lol, nice one Alan!
I was wondering how you got that picture of me until I noticed it was a fake. My helmet is red!
Gary
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What's slop would a single MP III take?
Not sure what the grade is on the bridge in this video, maybe someone can estimate it from a freeze frame. I was riding the bike in Alan's picture with my trailer in tow. One MP III on the back and two 48V10AH batteries.
http://m.youtube.com/watch?v=S5RtYeUmW1U
Gary
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What are the max peak and continuous currents allowed by the build-in controller in MP3?
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Max 75A and continuous 35A.
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Max 75A and continuous 35A.
Really? Have some measured it or it's just GM's "declaration"?
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Well Magic Pie is 1500Watt at 48V so......1500/48 =...
It's GM info.
I have really not measured it, because mine broke in short time.
I am using external one:-)
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I suspect the programmed figures are a bit on the optimistic side as my Smart Pie controller is currently set to 30 Amps continuous and 70 Amps peak, but the highest current recorded so far (33.73 Amps) is less than half of the 70Amp peak setting.
Alan
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Peak or continuous?
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I suspect the programmed figures are a bit on the optimistic side as my Smart Pie controller is currently set to 30 Amps continuous and 70 Amps peak, but the highest current recorded so far (33.73 Amps) is less than half of the 70Amp peak setting.
Alan
Exactly!
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Peak or continuous?
My Turnigy Wattmeter stores the peak amps measured (absolute maximum).
Alan
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Thanks! ;D
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I am using external one
What are yours max peak/continuous settings for the external controller?
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Everything is set to max.
Max MP3 current is 101A at 48V ;D
So I am happy :o
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Max MP III current is 101A at 48V
Have you measured that it really provides 100A? What controller do you use?
Does the GM MP3 Motor have any over-current protection (temperature sensor)?
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I am using Turnugy wattmeter.
Well after fresh charged battery sometimes the BMS will go in protect mode due the overcurrent protection. So .......... :o ;D
I am using Kellycontroller KBS model.
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I am using Kellycontroller KBS model.
Good! Me too! But, I burned my Cyclone motor due to using it without temperature thermistor (motor's monitor was not monitored).
So, does MP3 Motor have the temperature sensors inside? Is it able to work under 100Amps peaks?
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Nope to have to buy the temperature sensor mentioned in your controller manual.
And install the sensor in the motor....
Don't worry the motor can handle a lot of power ;D
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Nope to have to buy the temperature sensor mentioned in your controller manual.
And install the sensor in the motor....
Sorry, I'm not so familiar with English... Don't you use the temperature sensor with the Kelly's KBS Controller?
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Aaha my English is also not well... I am Dutch hahaha.
No I don't use the temperature sensor it's useless.
I am only use 48V so the motor don't get that hot....
AWhen at top speed the motor use about 10A so.....not that hot:-)
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Do you use the KBS48101 Kelly Controller?
Have you ever tried to ride with the original MP3 Controller? Do you feel a big difference with the Kelly's one? Do you you use a single or double motor wheels? What top speed do you able to reach? What about hills?
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I am using KBS48121L.
The diffrence is not enough to explain in words ;D
You have to feel it!
Max speed for my bike is 40 km/h.
I am using MTB 2,35 inch tire, so less top speed.
But I don't care 40 km/h is enough for me ;D
Crazy torque :o but aware with weak bike build you can destroy your motor and bike :o
Yes I have used the internal controller for one test ride.
I don't like it!
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I am using KBS48121L. The diffrence is not enough to explain in words ;D
Hm... I thought that the only difference between the KBS48101L and KBS48121L controllers is the maximum peak current supported (100A vs 120A). Am I wrong? I supposed that the response time should be nearly the same in both controllers. Isn't it?
Max speed for my bike is 40 km/h.
Is it 26" bike? Is the motor on the rare wheel?
Crazy torque :o but aware with weak bike build you can destroy your motor and bike :o
So, what the solution? GM sell the fork arm to enforce the bike's fork where the motor is installed. Is it good enough? Would you recommend another one?
I understand why the bicycle might be destroyed. But why the motor might be destroyed as well?
Thanks!
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Good torque arms:
http://ebikes.ca/store/store_connectors.php
Yes my bike is 26 inch.
Example:
Well if your bike dropouts fails the motor axle can move and will destroy motor cables.
Yup the current is just the difference software options are still the same.
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MAGICPIE3FOC,
Could you please to provide a connection schema between the Kelly's KBS Controller and the GM MagicPie-3 Motor? What's the order in connection of the hall sensors between the motor and controller? What's about the phase leads? Is there any color match?
Thank you!
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You can try first to match same colours so green to green and so on...
If it doesn't work you can try:
Kelly controller-------------Motor Phase
A-------------------------------yellow
B-------------------------------blue
C-------------------------------green
Hall Sensors
Hall A-------------------------yellow
Hall B-------------------------blue
Hall C-------------------------green
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Thanks!