Direct Drive to Diff E Revo Build

[GriffinRU]

Originally Posted by sikeston34m

@Johnrob - Is there any way to estimate the KV rating of an AXI 4130 4 turn wye wind? 6 strands of 22awg?

Estimate - Hard
Measure - Simple

Apply fixed (measure) voltage - measure RPM
Spin with fixed (measure) RPM - measure voltage

[johnrobholmes]

Originally Posted by GriffinRU

Estimate - Hard
Measure - Simple

Apply fixed (measure) voltage - measure RPM
Spin with fixed (measure) RPM - measure voltage

Won't he need to use an AC voltmeter setting, and won't it give an RMS voltage out instead of the required DC input for the given speed? I can't find any info on how a 3 phase would be tested for kv.

[GriffinRU]

Originally Posted by johnrobholmes

Won't he need to use an AC voltmeter setting, and won't it give an RMS voltage out instead of the required DC input for the given speed? I can't find any info on how a 3 phase would be tested for kv.

H-Bridge is built-in into FET's

[johnrobholmes]

Originally Posted by GriffinRU

H-Bridge is built-in into FET's

You are talking of the ESC right? I'm confused now

[its me]

Hey sikes sorry if you answered this but what was the final out come of your motor selection (I get dumb founded by the tech talk LOl)? I would like to attempt (direct to diffs) this with the maxx im building.

[GriffinRU]

Originally Posted by johnrobholmes

You are talking of the ESC right? I'm confused now

Have your test motor attached to ESC and Voltmeter to battery connector, leave battery unplugged. Spin motor shaft and record peak voltmeter readings.
Do not forget about RPM, you need to know motor speed to calculate Kv value.

[sikeston34m]

I got to run the Revo some more today. 4S is sweet!

So I put it on 5S, considerably faster.

Then I put it on 6S. It runs great on this. A real power house with a rooster tail of gravel and dirt following it where ever it goes.

During the 6S run, I noticed I only had front wheel drive!

I was thinking "Oh NO!" What could this be?

Turns out I stripped a hex on one of the rear wheels. Good sign of power.

[lincpimp]

Originally Posted by sikeston34m

I got to run the Revo some more today. 4S is sweet!

So I put it on 5S, considerably faster.

Then I put it on 6S. It runs great on this. A real power house with a rooster tail of gravel and dirt following it where ever it goes.

During the 6S run, I noticed I only had front wheel drive!

I was thinking "Oh NO!" What could this be?

Turns out I stripped a hex on one of the rear wheels. Good sign of power.

Sweet, sounds like a great setup. Maybe I need to bribe you to wind me a motor like that