Boma 60V 2,000W brushless motor

[Functional Artist]

That should be your voltage lead
...it connects to (B+) on a volt meter
(about the same as connecting straight to the positive (+) terminal of the battery pack)

See this thread for more info
http://www.diygokarts.com/vb/showthread.php?t=38583

 

[sikbrik]

http://youtu.be/uUmI1F-xrqs

Thanks for that link, functionalartist, that's really helpful!!

 

[Bmr4Karts]

Can this system get 350lbs of kart and driver up to 25mph while still having enough torque for 20 degree slopes?

 

[sikbrik]

I think it'll be tough. We're moving about 200lbs of kart + driver at about that pace on slopes. It hits 35mph on flat pavement. If we geared down to a 25mph top speed, it'd likely haul another 150lbs around pretty well and handle 20° slopes. He can crawl a 35° hill with decent pep but the motor gets hot.

 

[Bmr4Karts]

Can a sinusoidal brushless controller be used with these motors?

 

[Bmr4Karts]

So what's the actual difference between the 48v and 60v motors? I've put 70v through my 48v motor without any issues. Also, the 48v motor with a shunt modded 48v controller pulls 50 amps and moves my 300lbs of me and kart up hills with ease.

 

[Functional Artist]

So what's the actual difference between the 48v and 60v motors? I've put 70v through my 48v motor without any issues. Also, the 48v motor with a shunt modded 48v controller pulls 50 amps and moves my 300lbs or me and kart up hills with ease.

Effeciency

I put ~40V thru a 24V 450W motor

http://www.diygokarts.com/vb/showthread.php?t=36894


I also did some testing "straight" off of the battery pack

http://www.diygokarts.com/vb/showthread.php?t=39287

* "Personal Analysis, of the (3) tests with the ZY1020 48V 1,000W motor

Alfa Wheels speed controller
Take-off ~25A
Accelerating ~25A
Constant/crusin' ~12A
Top speed ~14 MPH

TD Pro speed controller
Take-off ~30A
Accelerating ~30A
Constant/crisin ~10A
Top speed ~14 MPH

With-out a speed controller (just a battery pack, beefy switch & motor)

Take-off (up to) ~100A
Accelerating ~50A
Constant/crusin ~10A - 12A
Top speed ~14 MPH

So, (as Sid said) the speed controller (available amps) doesn't seem to be holding the motor back

The only advantage, I see, is a "harder" acceleration
...but, at the expense of "lots" of amps
…& the top speed was still ~14MPH either way"

 

[Bmr4Karts]

Hey FA, thanks for the response, but I'm looking for the difference between the 48v and 60v motors. I think the 60v is less rpm per volt which means it should have more torque per rpm. I know I'm running th 48v motor at over 7000rpm at 70v and think the 60v motor won't be spinning as fast with the same volts. Better for long term durability.