Re: e-tek motor side loading

["Thomas Cook" <Hi2Thomas@hotmail.com>]

Thunderstruck-ev.com's Millecycle uses the etek motor. It has a 15 tooth
sprocket on the motor, and a 20 tooth on the rear. It is running off of a
48v, 650amp controller, without any problems so far. It really scoots in the
60ft, which means that their is a lot of torque coming out of the motor. I
think if you make sure that the sprocket is pretty close in to the face of
the motor you shouldn't have any problems.
Best of luck with your project,
-Thomas Cook
----- Original Message -----
From: "Douglas Hartley" <douglas.hartley@sympatico.ca>
To: <ev@listproc.sjsu.edu>
Sent: Tuesday, January 29, 2002 8:15 PM
Subject: Re: e-tek motor side loading


> I have made a motorcycle conversion using this motor and chain drive
> with sprocket on the motor shaft. (See austinev.org/evalbum/343.html) I
> am expecting (hoping?) that the motor can handle the side loading if the
> sprocket is not mounted too far out on the shaft and the chain is not
> adjusted too tight. I don't have enough mileage yet to prove anything
> (just finishing and winter is not ideal for extensive use).  Probably
> the main weak point will be the set screw/key mounting of the sprocket
> adapter on the shaft - it tends to get loose.  The last assembly I did
> with gasket goo around the set screw threads and keyway.  Some kind of
> tapered hub/key with a bolt on the end of the shaft, retaining and
> applying pressure, would likely be better. I think I will try to do it
> this way and keep the best solution.
>
> With no low gear, acceleration is not great from a standing start, but
> this motor is great for its small size and low weight and ease to mount
> with the sprocket in the original ICE sprocket position.  However, I
> find it noisier than expected, perhaps some due to ripple from the
> controller and some is chain noise you can't hear with the original ICE
> running.
> Good luck - lets exchange ideas and results....
>
> Doug
> "If it is worth doing, its worth doing badly (rather than not at all -
> just be safe)"
>
> Jeremy Green wrote:
> >
> > Hello,
> >
> > My brother is preparing to start work on an E-Tek powered motorcycle.
> > I am guessing he will probably do chain drive.  I was wondering if
> > the E-Tek motors can handle the side loading of having a sprocket
> > directly on the motor shaft.  Does anyone have experience with this?
> > Thanks,
> >
> >                 -Jeremy
>
>