Re: 12V motor @ 24V

["Rick Pryor" <iamaquarius@mindspring.com>]

Pete wrote:

> You really need a double reduction, like maybe a 4:1 feeding a 4:1.
>
> Here is a hint for a simple jackshaft.  The bottom bracket cups will fit a
> 10 speed free wheel (the kind that threads onto the hub).  Take the
> freewheel apart and remove the ratchets so it can spin freely in both
> directions.  Secure the cup from a bottom bracket and screw on the
> freewheel.
> You'll still need to add a chainring to it to get the proper reduction.
>

Hi Pete,

I have a single stage that is basically a complete hub, and have a 44 tooth
pedal ring milled to fit over the bearing housing and bolt onto the opposite
side of the hub. This would give me a tad over 7:1, but I think it still
isn't enough perhaps. Maybe it would work fine at 12 volts this way.

I have a 65 tooth pedal ring made of very thick steel from an old exercise
bike, but it weighs so much. I fear it would be best applied directly to a
wheel, rather than on an inter-stage assembly where the inertia won't be
given back when coasting.

I'm totally confused about what you mean by the cup, and a bottom bracket. I
may need pictures for this one. Must be names of bike parts that I'm not
familiar with.

Thanks for the input!!

Rick Pryor