ok to follow up. I bought an older burned out 600w MAC/BMC motor (fried internal controller) originally for a synergy/lashout e-bike. I successfully bypassed the internal controller and hooked up a Lyen 12 fet 45amp controller set for 36v(http://endless-sphere.com/forums/viewto ... 31&t=17683
), wired for CCW direction for my scooter (mongoose FS rocket). Thanx Lyen!
Prior to switching to this new setup, I was using the mongoose's original 450w 24v (model:XYG-6B) overvolted to 36v using a currie style 36v/30a controller. I haven't done any efficiency tests yet. so this reply is mostly about speed and power observations between these 2 motors.
Originally on my scooter:
24v/20a= 480w (about 15mph) (5mph uphill and sometimes quits)(http://www.monsterscooterparts.com/24v45moupkit.html
and when over volted:
36v X 30a = 1080w (about 24mph) (7mph uphill and quits less often)
note: at speeds over 2600rpm any throttle action beside FULL confuses to motor and creates bad thumping/knocking noises. if I need to slow down, I have to slow down below 2600rpm to accelerate again. and as long as I do this, no bad noises occur.
New to my scooter:
Brushless 600w MAC/BMC (originally rated 600w w/internal controller... which I bypassed):
24v x 25a = 600w (I haven't rode one of these so dont know how fast it went/goes)
NOW: 36v x 45a = 1620w (presumably) (about 15mph) (about 8mph uphill)
My initial observations:
Im thinking something might be wrong. I haven't done any metering yet. I expected the MAC/BMC motor to perform as well in speed, if not better, than my over volted brushed motor. but sadly it does not. the MAC makes a pretty loud winding sound, especially with more load... and aside from the winding, seems to perform properly (I think?)... just not what I expected at all. infact now that Im writing this, I'm thinking maybe I got the hall sensors wrong? anyone have any experiences like this?
Is there a test I can do to figure out whats going on? or if you have any info that can help me understand why it's not to my expectations, please comment. like old magnets? or inferior version of this motor (not a super MAC)?
I should also mention, when I was testing it, and had it in it's original turning direction (CW) it sounded like it spun about 20% faster....!?!?