those PM elec-trak motors are the culprit. Probably 600W, but only at like 4000RPM. If you overcurrent them you will probably just demagnetize them.
Seth On 6/25/07, damon henry <[EMAIL PROTECTED]> wrote:
Yes that is a possibility, but one you will be able to determine by hooking a battery directly to the motor. If it sucks huge amounts of current, then you need to change the gearing to allow the motor to spin faster. What does it do up on a stand with no load except turning the wheel? How about with no one on the mini-bike just you walking or running along side? If you are bogging down the motor then a gearing change is in order. I forget what the exact tooth count was, but it seems like you mentioned 12 to 64 or there abouts which sounds pretty good to me. I think you have everything you need for a fun ride, you just need to weed out the weak link. Since it sounds like you have access to a contactor, I think you will find a good old fasion binary controller and 36 volts of batteries just the ticket. Work your way up to that level though and watch the temperature of your motor. You don't want to burn it up. damon >From: SteveS <[EMAIL PROTECTED]> >Reply-To: ElectricMotorcycles <[email protected]> >To: ElectricMotorcycles <[email protected]> >Subject: Re: [ElectricMotorcycles] mini-bike performance >Date: Mon, 25 Jun 2007 07:44:33 -0400 > >Isn't there another possibility - the gearing and setup? I think my wiring >and all are adequate, but maybe my gearing is wrong. Obviously gearing >affects top speed directly, but how much affect on performance does gearing >have? When I'm running at 5MPH and the motor is turning 800 RPM, is that >too slow to get adequate power? > >- SteveS > > >damon henry wrote: >>>Well, there are only three possibilities. It's the motor, the batteries, >>>or the controller. >> >> > > > _________________________________________________________________ PC Magazine's 2007 editors' choice for best Web mail—award-winning Windows Live Hotmail. http://imagine-windowslive.com/hotmail/?locale=en-us&ocid=TXT_TAGHM_migration_HM_mini_pcmag_0507
