Propulsion System - Motors, Gears, etc


#528

Can you tell us more about the Lift motor you have? Size, weight, poles, cables?


#529

can you guys maybe tell me what would be better… iam not a pro in brushless motors :slight_smile: just having one in my rc car :slight_smile:
100kv version with 60V at full throttle
or 120KV version with 60V on maybe 80% throttle


#530

Can’t tell you exact specs as I haven’t hooked it up and done a pole count yet.
The unit is under 70mm in diameter and the motor portion of the housing is in the region of 130mm.
Its well made though.


#531

Cables are a mil-spec wiring. It looks like a 6 Gauge something like SHF260-0113-6


#532

I plugged the ARC200 into the motor today to get some data:

  • 8 pole pairs
  • 6000RPM at 50V (that would mean no loss 120KV, but I’d imagine some losses so its between 120-130KV range)
  • Outer casing is under 70mm and length under 140mm
  • Mil-spec 6AWG wiring, something like SHF260-0113-6

There are a couple of alternative motors that one could use that would give you similar performance.
Astroflight has one, The D65L161-120 from Reacher has a similar spec. I think the APS 56200 inrunner should work as a direct drive.

Ultimately there is no real reason to go above 70mm in diameter for a direct drive motor. Spec wise for a fast board you need:

  • 5kw (even the 6384 which is 4kw works well)
  • 12S to 14S
  • 80KV - 130KV

I hope this helps some looking for solutions not using a gearbox…


#533

8!poles or pairs of poles ? Outrunner ?


#534

Thanks jezza :ok_hand:


#535

@Jezza,

The autotune function of your Arc200 may be super interesting. Looking forward to see what sort of optimal values it will find under the water.


#536

When I used the pole measurement in the arc200 setup it came in at 8 pole pairs. Astroflight motors also have 8 pole pairs.


#537

That is 16 poles , i might be wrong but it takes some space , sss tp… 40mm use 4 poles , 56mm 6 poles…
Is it possible to fit 16 magnets on a inrunner 70mm?


#538

Macon make a 52mm motor with 8 pole pairs. They say it’s much quieter.


#539

Thanks Jezza, great info!
Will you get more torque with more poles?

If we just could get our hands on these motors :wink:


#540

Hi All

I found this 500KV SSS 56123 motor which it is 122mm long with more torque for those of you who are using reduction gear.


#541

The list of potential candidates is getting shorter and shorter…


APS 56200 inrunner