My Kelly controller (KD72301) failed the other day after 500 miles and ~4 months. The wiring was correct and I'm fairly easy on the controls.
The motorcycle started driving on its own and I had to cut the power to avoid hitting the car in front of me (I was at a red stoplight when it went nuts). The controller was dead, but the motorcycle started driving (full power) any time the main power switch was turned on. It happened after going down a ~0.5 mile gradual down hill with a bit of regen. Kelly sent me another one right away. -Lennon On Mon, Aug 18, 2008 at 9:36 PM, Bob Martin <[EMAIL PROTECTED]> wrote: > I popped a few too. The last 2 popped after coasting down from high speed > and then goosing the throttle. My theory is that the motor generates over > voltage back into the controller and popps the caps when hard throttle is > applied too soon. I'm going to try an over-running clutch on my motor > sprocket and hope that stops the feedback. Some side benefits are less brush > wear, no face-plant if the motor locks up and maybe more range, I don't > know. I'll have to try it out. Later, Bob > > ----- Original Message ----- > From: Garret Maki > To: ElectricMotorcycles > Sent: Monday, August 18, 2008 8:03 AM > Subject: Re: [ElectricMotorcycles] Another Alltrax bites the dust... > I've used two 7245 controllers. One with flooded lead acid and one with > bb600s and haven't had any problems yet, knock on wood. Each bike has over > 500 ev miles... not a ton but a data point. > Garret > > --- On Fri, 8/15/08, damon henry <[EMAIL PROTECTED]> wrote: > > From: damon henry <[EMAIL PROTECTED]> > Subject: [ElectricMotorcycles] Another Alltrax bites the dust... > To: "ListServ@electricmotorcycles.net" <listserv@electricmotorcycles.net> > Date: Friday, August 15, 2008, 12:36 PM > > Well, > > I just blew up another Alltrax controller. I believe that is 4 for me now. > This one is right at the 2 year mark, so we will see if it is warranty > replaced or not. Does anyone else go through these things like me. I have > destroyed 3 on my motorcycle and 1 on my truck. > > I'm beginning to believe that they do not like the way I use my Nicads to > max them out to their top voltage levels. I have been running 44 cells for > a nominal voltage of 52.8 on a 48 volt controller. On the RMA form I always > list the voltage I am running at and they have never said anything about > it. Anyway, I popped the dead one off and threw on the 72 volt replacement > controller I have from an RMA on my truck. I replaced my truck controller > with a 120 volt 1000 amp Logisystems controller, so this one has been lying > around as a spare. I think I will just leave the 72 volt controller on my > motorcycle and run way under the voltage limit of the controller this time > around. > > damon > > ________________________________ > See what people are saying about Windows Live. Check out featured posts. > Check It Out! >
