Thegonzoman7
100 µW
- Joined
- Mar 23, 2020
- Messages
- 7
Thegonzoman7 said:Let me tell you what man. The 2000w pushes me 50+ mph on a custom chopper scooter that weighs atleast 200 lbs without counting my 159 pound body riding it. So this 2000w little motor on 60v is a beast. Scares the hell out of me it has so much power. Especially during custom install when alignment of sprockets sends chain flapping around a wheel spinning 150 mph! ( learning days) it’s tough as hell too.
qwerkus said:Does anyone own one of those MY1020 / Kunray / Yalu or whatever motor they are called:
motor.png
Super cheap and readily available. They seem to come in 2 versions: a 124mm 1000W and a 134mm 2000W. Both 107mm diameter. Weight is somewhere between 3.5 and 4kg. A version with a 4-bolts foot is also available.
dimension.png
My question is: are they usable ? Seem like an inrunner, and would love to seem more of the internals, if anyone has pics. Speed probably a bit high for bike use - better for karts or other EVs with small wheels. Maybe a WYE / Delta hack to make them more suitable for ebike use. Or plain rewind.
neptronix said:Low power to weight ratio on those babies.
Probably not great efficiency.
Of course they're cheap.
with dimensions like that, they'd be my last choice, as you'd instantly get a weight imbalance no matter where/how you mounted the motor.
Bmr4life said:This may be a dumb question but do these motors run better in one direction versus the other? This is motor only, ignoring controller settings.
Thanks
Ianhill said:Bmr4life said:This may be a dumb question but do these motors run better in one direction versus the other? This is motor only, ignoring controller settings.
Thanks
Equal torque and rpm in either direction, wouldn't want to ram it in reverse mind going flat out the sprocket will proberly spin on the motor shaft, there's only an interference oval fit sprocket with a lock nut that is one weak link the other is the magnet armature is just a press fit to the output shaft so over abuse will see this slip on the shaft, I had this problem with full power starts when warm, slippage inside the motor that's hard to fix with out rebalancing the rotor afterwards.
Bmr4life said:Ianhill said:Bmr4life said:This may be a dumb question but do these motors run better in one direction versus the other? This is motor only, ignoring controller settings.
Thanks
Equal torque and rpm in either direction, wouldn't want to ram it in reverse mind going flat out the sprocket will proberly spin on the motor shaft, there's only an interference oval fit sprocket with a lock nut that is one weak link the other is the magnet armature is just a press fit to the output shaft so over abuse will see this slip on the shaft, I had this problem with full power starts when warm, slippage inside the motor that's hard to fix with out rebalancing the rotor afterwards.
Thanks. I figured it was related to weight shift (forward CW, reverse is CCW) with my kart. Reverse burns rubber and speed offs strong while forward is far less exciting.
Bmr4life said:It appears so but that doesn't make any sense. That's why I want to try the motor with my Kelly controller.
Ianhill said:Bmr4life said:It appears so but that doesn't make any sense. That's why I want to try the motor with my Kelly controller.
Flip a phase and the matching hall the motor will spin backwards and give you that power in forward rotation if it's the case. E.g. yellow to green phase and halls then blue to blue on both phase and halls will see it spin in reverse.
Bmr4life said:Ianhill said:Bmr4life said:It appears so but that doesn't make any sense. That's why I want to try the motor with my Kelly controller.
Flip a phase and the matching hall the motor will spin backwards and give you that power in forward rotation if it's the case. E.g. yellow to green phase and halls then blue to blue on both phase and halls will see it spin in reverse.
Tried that a while back and nothing charged but the direction. Power going backwards still felt better. Really annoyed with setting up this Kelly controller. Had it relearn my Motenergy motor without issue but these cheap my1020 motors won't act right (I've tried two so far).
I’ll look it up. I still have that motor and still works. I doubled them up and continued to modify that same ride into a monster for what it was. I’ve moved on since then to a 10kw golden motor that is a absolute animal. I thought those little things had power.... I got my golden used for $200 and I’m throwing insane power at it and have only managed to burn controllers up in the process. I’m talking 40,000 watts, 50,000 watts, and 65,000 watts. You want fun, get ahold of me and I’ll share what I’ve learned so far. A lot. Those small motors are awesome. And very powerful. But get onto something running one of these babies... a Ferrari has no chance. Here’s a pic of the latest build. Still finishing it. The seat in the pic was just temporary till I get my seat cover and base finished . Moped conversion. 10kw.qwerkus said:Thegonzoman7 said:Let me tell you what man. The 2000w pushes me 50+ mph on a custom chopper scooter that weighs atleast 200 lbs without counting my 159 pound body riding it. So this 2000w little motor on 60v is a beast. Scares the hell out of me it has so much power. Especially during custom install when alignment of sprockets sends chain flapping around a wheel spinning 150 mph! ( learning days) it’s tough as hell too.
This is awesome. Do you happen to have an exact kv value for this motor ? Seems to vary from one model to another.