In the latest newsletter from Devi-comfort they announced the upcoming release of a Golden motor magic pie 3/smart pie sine controller that should make the motor "stronger more efficient and much more quiet". Sounds great! I e-mailed and asked when they will be available but they did not know when. Does anyone of you guys know when the controllers will be available at retailers?
Magic Pie internal sine controller
- Thread starter Liffa
- Start date
whereswally606
100 kW
Looking at their other sine wave controllers this will not be cheap.
Interesting... but to be honest, why bother?
The magic pie is far from being a stealth motor. Probably the least stealth motor you could ever buy!
It also has a really nice sound.
It's like putting a super quiet muffler on a Harley you just bought.
The magic pie is far from being a stealth motor. Probably the least stealth motor you could ever buy!
It also has a really nice sound.
It's like putting a super quiet muffler on a Harley you just bought.
Honk
100 W
- Joined
- Oct 10, 2011
- Messages
- 230
Really fast bike but what a terrible sound the motor makes. 
I'd wish they had come up with this type of power using a quiet roller gearbox, like the Tongxin.
There is of course several BIG and quiet direct drive hub motors without any noisy gears, but I prefer
a small and stealthy motor, yet strong and efficient, in the KW range.
I'd wish they had come up with this type of power using a quiet roller gearbox, like the Tongxin.
There is of course several BIG and quiet direct drive hub motors without any noisy gears, but I prefer
a small and stealthy motor, yet strong and efficient, in the KW range.
cwah
100 MW
Can we just buy a normal MP3 and put one of these sine wave controller?
MAGICPIE3FOCUSPOWER
10 kW
Hi all,
I didn't like the Magic Pie 3, but now I see they have released a new Magic Pie motor version number 4.
What are the benefits of sine wave controller? Also what is a vector controller?
Thank you!
I didn't like the Magic Pie 3, but now I see they have released a new Magic Pie motor version number 4.
What are the benefits of sine wave controller? Also what is a vector controller?
Thank you!
interesting indeed
http://www.electricbike.com/sine-wave/
http://endless-sphere.com/forums/viewtopic.php?f=30&t=56680
justin is also working on a sinewave
i've never had a sine controller so i can't comment but i would say the sinewave could theoretically be better in terms of torque. runs cooler + Quieter.
Sine wave is generally dearer - a Microprocessor used to create sine wave
the squarewave is just on and off- but upto this point i use a square wave and im still happy
overall i like the large diameter of the MP
it gives torque and allows for shorter spokes which builds a stronger wheel but is hard to lace
from what i gather the MP MP2 used normal bearings the MP3 used that large bearing on the right side (because of the controller) which is very expensive- the mp 2 is the same size as mp3
the right bearing sits on the stator cast sitting on the stator vs axle which is an interesting design
i suspect any DYI user will right off tear out the internal controller and use a decent external... i also like how the wires are coming out- makes it easier to upgrade if you have to....but upgrading that big bearing is the downfall
otherwise i dont think its a bad motor and it does have an interesting design
edit: based on video below it is mp3 with a different controller so it seems
http://www.electricbike.com/sine-wave/
http://endless-sphere.com/forums/viewtopic.php?f=30&t=56680
justin is also working on a sinewave
i've never had a sine controller so i can't comment but i would say the sinewave could theoretically be better in terms of torque. runs cooler + Quieter.
Sine wave is generally dearer - a Microprocessor used to create sine wave
the squarewave is just on and off- but upto this point i use a square wave and im still happy
overall i like the large diameter of the MP
it gives torque and allows for shorter spokes which builds a stronger wheel but is hard to lace
from what i gather the MP MP2 used normal bearings the MP3 used that large bearing on the right side (because of the controller) which is very expensive- the mp 2 is the same size as mp3
the right bearing sits on the stator cast sitting on the stator vs axle which is an interesting design
i suspect any DYI user will right off tear out the internal controller and use a decent external... i also like how the wires are coming out- makes it easier to upgrade if you have to....but upgrading that big bearing is the downfall
otherwise i dont think its a bad motor and it does have an interesting design
edit: based on video below it is mp3 with a different controller so it seems
MAGICPIE3FOCUSPOWER
10 kW
Thanks for the info! 8)
macribs
10 MW
- Joined
- Jul 22, 2014
- Messages
- 3,702
davec said:
So what kind of speed could one expect from a pie 4? Is it possible to overclock the voltage past 60v if controller is removed and a replaced by another controller? Those magic pies are light weight and lots of people have em. But are those good quality motors that can take a beating and overclocking without melting or overheating?
Could thermal sensor be added easily to the MP4? I mean if one would swap out the controller and go past 60v I imagine some failsafe measures would be needed? Like set a temp limit that will reduce output from controller until temp are under threshold?
OP sine wave controller are noiseless or close to it. Thats all I know. Maybe some longtimer here can tell you more.
wesnewell
100 GW
Other than maybe reducing noise and possibly a smoother transition, I don't think there is an advantage. The smoother transition may improve performance in a motor , but I don't know and I'd have to see proof to believe it.
http://en.wikipedia.org/wiki/Wave_form
And I still don't like the idea of the controller being inside the hub where it is exposed to added heat. Would you run your PC in 100C room? Not for long. :lol:
http://en.wikipedia.org/wiki/Wave_form
And I still don't like the idea of the controller being inside the hub where it is exposed to added heat. Would you run your PC in 100C room? Not for long. :lol:
macribs
10 MW
- Joined
- Jul 22, 2014
- Messages
- 3,702
wesnewell said:
I agree on the controller part. As a long time overclocker to get most possible use of the pc's cpu I know what problems heat causes regarding stability and durability. In the early days of OC we had to make diy water cooling sets to get our moneys worth and spinning fans as well. Seeing back it is hard to grasp we where actually able to get any work done at all with all that noise
I think I saw a thread here somewhere about how to get the most out of the magic pie, but I can't seem to find back to it. MP can be a possible motor if it can stand higher voltage then what the specs says.
liveforphysics
100 TW
Woot! Looks like magic pie stepped up there game in a big way. That makes for such a clean install for commuter bikes, and has very likely has smooth silent torque performance.
MAGICPIE3FOCUSPOWER
10 kW
Yup I think davec is right it is still Magic Pie 3, only controller is upgraded.
No excuse to buy one of these, Magic Pie 3 design (bearings and hub width) is bad.
But can handle power and strong built.
No excuse to buy one of these, Magic Pie 3 design (bearings and hub width) is bad.
But can handle power and strong built.
ace17365
10 µW
Has anyone got any hands on experience of new controller vs older ones back to smooth aluminium original type very unreliable. In my view gone through 4 on two motors 26 front an 20 rear
miro13car
100 kW
It says:
4.Higher reliability
just higher
But graphics are really nice :lol:
4.Higher reliability
just higher
But graphics are really nice :lol:
eBikeWannaBe
10 mW
I finally got my bike on the road today with the new MP4. This is my first ebike so take this with a grain of salt but the MP4 is very quiet. I found the torque caused me a bit of issue when hand signalling, it tended to pull the bike to one side. The control seems a bit digital but it pulls quite nicely and handles the hills I was worried about fine.
I read on another forum that the winding's and hall sensors were changed from the MP3. I sure hope that doesn't effect changing to an external controller down the road.
I read on another forum that the winding's and hall sensors were changed from the MP3. I sure hope that doesn't effect changing to an external controller down the road.
pwd
10 kW
Thanks for the feedback, I'd love to see a comparison with previous generation Magic Pies.
MAGICPIE3FOCUSPOWER
10 kW
Yup thanks for your info!
Do you gave any pictures of it?
I am consider to buy Magic Pie 2 (better bearings design), just for running high power...for a cheap price....
Do you gave any pictures of it?
I am consider to buy Magic Pie 2 (better bearings design), just for running high power...for a cheap price....
cwah
100 MW
Doesn't look that nice
eBikeWannaBe
10 mW
Here is a picture of the bike with the battery out of it. I'm no professional fabrication artist that is for certain I suppose the difference in looks between the mp2 and mp3 versus the mp4 is very minimal. I've been flogging this hub for almost 100 miles now and I really like it. The torque is very good and I'm able to climb steeper hills than I would have thought possible. I've checked the controller part of the hun after steep hills and it is barely warm. Not bad as I'm 235lbs. I had a buddy standing on the road and I did some testing where I accelerated past him or took off from a dead stop and he couldn't hear any motor noise. My CA tells me I'm pulling almost 1500 watts. The battery setup is 15AH of 12s lipo. The only issue I have is that the regen doesn't kick in properly. I have had regen of about 600watts going 47km/hr down a hill but only when I partially turn on the throttle. All other times there is zero regen.
I suppose the difference in looks between the mp2 and mp3 versus the mp4 is very minimal. I've been flogging this hub for almost 100 miles now and I really like it. The torque is very good and I'm able to climb steeper hills than I would have thought possible. I've checked the controller part of the hun after steep hills and it is barely warm. Not bad as I'm 235lbs. I had a buddy standing on the road and I did some testing where I accelerated past him or took off from a dead stop and he couldn't hear any motor noise. My CA tells me I'm pulling almost 1500 watts. The battery setup is 15AH of 12s lipo. The only issue I have is that the regen doesn't kick in properly. I have had regen of about 600watts going 47km/hr down a hill but only when I partially turn on the throttle. All other times there is zero regen.Attachments
cwah
100 MW
How does it compare to a BPM? I suppose it has much less torque? And it doesn't freewheel either
Similar threads
- Question
