AAAkings wrote:Thanks for the reply and tips. Much appreciated.
Now one final question. Would using an motor like yours be recomended (RC engine) or should I look for motors meant to drive a persons weight like a scooter motor? Mainly hoping that the engine is not overworked due to the weight of the rider.
Stielz wrote:Im wondering how fast the motor would have to be going for it to switch to sensorless operation.. like if someone were to give a little push off before giving it some throttle would that be enough to get it straight into sensorless commutation?
Stielz wrote:I am just having problems with my home made motor controller when I run it on the 10S lipo pack as it keeps blowing transistors. I have just had my fist go on it today just running it on 5S and it goes well, not overly fast but it has plenty of torque and acceleration.
Stielz wrote:Obviously the best braking method is regenerative braking as it is the only method that doesnt just convert the kinetic energy into heat in the motor and the controller. However I need a second method of braking for when the battery is fully charged so that I dont have my $250 (NZD) battery pack go up in smoke when the lipo batteries get over charged.
AAAkings wrote:Thanks. I plan on doing a 2wd one then instead with two seperate motors. I know lower KV is recomended but when comparing the following two engines, which one would be prefered? (Haven't picked batteries or a controller yet)
http://www.hobbyking.com/hobbyking/stor ... Motor.html
http://www.hobbyking.com/hobbyking/stor ... 5240_.html
One final question would be could anyone help recomenend a quality controller for either one of these motors? I read on HumboldtRC's threads that he had issues of them burning up as well as many searches through these forums state that you shouldn't skimp on the controller. (Prefer engine brakeing but it not possible, could try and mount disk brakes instead).
I really hope this doesn't come accross as thread-jacking as there was no intent, I just figured the people reading this forum might have personal experience and recomendations.
Thanks once again!
Stielz wrote:I have also slowed the switching time to around 2 us n an attempt to reduce di/dt
EBJ wrote:agreed... Lets see some video footage of this thing when you get a chance.
Looks like fun.
uliray wrote:Awesome work, Any chance of multiple production for sale of the motor mount and axle?
uliray wrote:Well, hope you solve controller issue, and i'm telling you that you'll have a big market for that too if you decide to mass produce.
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