The smaller ones are about the size of what I have now, but I imagine
they have a lot more pull. I really would like to connect directly to
the driveshaft, but that means pretty low RPMs at low speed and hence
lots of current. The motor I have now doesn't like that. I'm thinking a
larger motor, esp. with 8 brushes, would deal with that a lot better.
And since I would need less than 2500 RPM max or so, I don't need to
overvoltage it. What is the downside of a larger motor ( other than
weight and size)?
- SteveS
damon henry wrote:
It will be great at lower volts. It likely has spent it's life up
until now running at 36 or 48 volts. When Jim says he has advanced it
to run at 72 to 120 volts what he means is that he has drilled and
tapped new holes and rotated the brush cap so to tune it to the higher
voltage. It's just a matter of setting the cap back to it's original
position to optimize it for lower voltages and Jim would happlily take
care of that little detail for you :-)
That particular motor is as big as the one I have in my Datsun Truck.
It's definitely more than you need for a motorcycle. I have been
riding for years on a motor the size of the smaller ones he has listed
with no problems. As long as your motorcycle is not super heavy you
should just snatch one of those up.
Of course you will still have to work out the shaft drive thing.
Perhaps you can just work up some kind of jack shaft with sprockets
so you can try different gear ratios. It should take up less room
than a transmission and you will have more options as to where to
mount it. http://www.surpluscenter.com has a nice selection of
bearings, shafts, chains, and gears at very low prices. It makes
experimenting quite affordable.
damon
> Date: Wed, 26 Mar 2008 12:42:02 -0500
> From: [EMAIL PROTECTED]
> To: [email protected]
> Subject: Re: [ElectricMotorcycles] Hi-Torque Motors for sale
>
> Yeah, I've been drooling over them. Prices are much better than I
> thought they might be!
>
> The first one (DSCN2032) might be what I need for the BMW conversion.
> Right now I'm in the middle of adding a transmission to it so I can run
> more tests with my present motor, but the tranny really screws up the
> layout and I really don't want it in the final setup. I wonder how that
> motor would be at lower volts?
>
> - SteveS
>
>
> Damon henry wrote:
> > If you are in need of a good motor take a look at Jim's latest
> > offerings. Take my advice, don't screw around with one of those easy
> > to melt pancake motors, get yourself one of these forklift rebuilds
> > instead. Jim makes them bulletproof. They just soak up whatever
> > amps you throw at them and keep pushing you down the road.
> >
> >
http://hitorqueelectric.com/gallery/v/MOTORS+FOR+SALE/rebuilt+modified/
> >
> > damon
> >
> >
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>
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