GoldenMotor.com Forum
General Category => Magic Pie & Smart Pie Discussions => Topic started by: blompod on January 14, 2012, 09:07:59 AM
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I just discovered this brand of electric hub motor, a place in Canada can do one with a 48v battery pack to take it up to 1500w. Its sensorless, no hall sensors so would be more reliable as they do tend to fail. Does anyone know about these motors? good bad or Indifferent? 8)
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They have a good reputation, although sensorless will probably mean a slightly rougher running motor
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Hi blompod,
Stating hall sensors tend to fail is a litlle extreme. I would phrase it more like hall sensors are one of only a few things that could fail. I would say from all the motors I have sold hall sensor failure is about 0.3 % or 3 out of a 1000.
Gary
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Hi, Blompod , I now own a Majic Pie . My previous Motor was a Crystalyte motor which had a failed hall sensor . I am going to help the friend that I gave the Crystalyte Motor to repair it next month . I would go with the Pie . Just because a motor can run sensorless does't mean that something else can't go wrong , such as the controller . Also isn't the Crystalyte much more expensive ? The only thing I liked more about the Crystalyte that I had was that the Battery mounted on the frame on the water bottle holder screws . Just my 2 cents . Rodmiami
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Thanks guys, I can get the crystalyte for about the same price as the pie, they just look robust, what about Nine Continent heard much about those?
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You are much better off with sensors, especially when using an external controller.
I'm running the pie sensorless and I'm having a few problems with nasty vibrations @full throttle that I put down to running is sensorless. Some motors will run better than others without sensors. Though having a sensorless controller lying around is a very good idea.
Also with sensors and an external infineon you can use the 120% speed setting for an extra 5mph!
My sensors burned because I pushed the pie too hard up a 16% stretch or mountain, but failed halls is rare, it can happen but I would rather sensors than not!
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Well after spending much much $$$$$$ the Magic Pie is still not good.
I have just broke the cover screws, yes the cover screws were very tightened.
The hex stainless screws are bad quality, the break easily.
So I gave up for Goldenmotor for now, I have only use the Magic for one test run.
Big waste of money you can say.
I have now Crystalyte HS3540, looks better to me.
But I will keep the MP3 when I am cooling down and have some insparation again for repairing it.
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Wait until you have to open the Crystalite motor . I had to cut slots with a Dremel tool in all of the hex heads because they all stripped out on my friends kit . Rodmiami
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Thanks for your info!
Yes the MP III screw broke and I could not drill it out without damaging the screw hole.
So I have make a bigger for one size bigger screw.
Do have any pictures of the Crystalyte motor without covers?
Which model did you own?
I see the phase wires are very thin, I think it will burn with high currents :-[
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screw out adapter for drills work great. a must for any tool box. remove the stripped screw and replace with a new one the same size. http://www.sears.com/search=screw%20out?storeId=10153&catalogId=12605&vName=Tools&viewItems=25&autoRedirect=true&redirectType=CAT_REC_PRED
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Thanks, I know those tools.
But screw is stainless steerl hard to drill.
It's very sliperry when drilling.
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i realize they are and I stripped one. was able to get it out with the screw out. took a little time but it came out nicely. just kept screw out on it in reverse. soon caught enough for the screw to unscrew.
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Off subject, is that ATCS USN?
TTFN,
Dennis
ETCM(SS)
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i realize they are and I stripped one. was able to get it out with the screw out. took a little time but it came out nicely. just kept screw out on it in reverse. soon caught enough for the screw to unscrew.
Waauww you have lucky, mine was welded to the screw hole.
What drills did you use? cobalt?
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Off subject, is that ATCS USN?
Dennis, here's a little clue from the GM website:
"The island I live on is mountains and I climb lots of big hills and the bike performs fantastic. Basically where I live is just like hawaii however we are in the middle of the atlantic ocean instead of the pacific. I live on the north shore of the island and travel thru the mountains to the south shore to the airport I am an air traffic controller at. I always check the motor after a long climb and it does not get hot, warm at most. The performance of the MagicPie and now the SmartPie is by far the best there is."
Would you like to have another guess?
Anyway, why are you involved with Electrolytic Tin Coated Steel (Stainless Steel) all of a sudden? :D
Alan
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Well after spending much much $$$$$$ the Magic Pie is still not good.
I have just broke the cover screws, yes the cover screws were very tightened.
The hex stainless screws are bad quality, the break easily.
So I gave up for Goldenmotor for now, I have only use the Magic for one test run.
Big waste of money you can say.
This is very unusual. After selling hundreds of motors I have never heard of anyone breaking the hex screws. I have heard of people stripping the Phillips screw heads on the MP3 controller. Those screw heads are weak but I still attribute that to people not using a perfectly matched screwdriver. But the hex headed screws in the side covers I have never had anyone break them. You certainly are an unlucky individual. At least the price you paid for your kit from BMS battery was very low, but was it worth it? With no support, I guess not. Did you ever get a replacement controller from them?
I feel your pain....
Gary
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Off subject, is that ATCS USN?
TTFN,
Dennis
ETCM(SS)
air traffic control specialist.. I was air force back in the 70's now FAA
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This is very unusual. After selling hundreds of motors I have never heard of anyone breaking the hex screws. I have heard of people stripping the Phillips screw heads on the MP III controller. Those screw heads are weak but I still attribute that to people not using a perfectly matched screwdriver. But the hex headed screws in the side covers I have never had anyone break them. You certainly are an unlucky individual. At least the price you paid for your kit from BMS battery was very low, but was it worth it? With no support, I guess not. Did you ever get a replacement controller from them?
I feel your pain....
Gary
Hi well I have just received the controller today :-*
Yes the screws are weak stainless steel.
I managed to fix the screw hole to 5mm.
I am a little happy now, I will finish my Magic Pie 3 project.
Otherwise it's even more waste of money, if I use the Crystalyte HS3540 motor.
Then I have to changing things again....
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I see you posted in two threads so I moved my response over here....
http://goldenmotor.com/SMF/index.php?topic=4643.msg27246#msg27246
Gary
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Hi Folks,
I really didn't mean to hijack this thread, but since you asked......
I spent 20 years in the Canoe Club, often referred to as the US Navy. We have abbreviations for certain employment positions. For instance, an Electronics Technician was known as an "ET", while Aviation Electronics Technicians were "AT'"s . Pay grades have similar abbreviations, such as "CS" for a Senior Chief Petty Officer, and "CM" for Master Chief Petty Officer. So I thought ATCS Paul might be a Senior Chief Aviation Electronics Technician with the last name of Paul. Not too many folks become Senior or Master Chief Petty Officers, so to me such a designation says they are well disciplined, fairly honest, trusted leaders and capable of independent thought ( and cunning when required).
When I retired after 20 years in the Submarine Force , I was a Master Chief Electronics Technician, or ETCM. I was qualified in submarines, and appended that special qualification on the end of my name with the (SS) to wind up with the ETCM(SS).
And of course you already know that on the internet I am tall and very good looking.
Again, sorry for hijacking the thread.
TTFN,
Dennis
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Haha nice.... ;D
I am working at Dutch Airbase in ECM shop :)
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i am tall and good looking to lol. actually been an air traffic controller since 1975 and still one in st croix US virgin islands. I plan on being the oldest controller in history lol
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Okay I have deciced to put the Crystalyte HS 3540 back in the box and resume the Magic Pie 3 project.
You have to modify the crsystalyte phase wires because they are very thin for high current.
Also the groove where the wires run through are very sharp, need to be file down.
And the Hs3540 is not a torque machine, but higher end speed.
I really like the rim (Excel) and spokes (Sapim) they are from high quality.