Kai, you're absolutely correct, a drill is a great way to do a quick test on a
gearbox & OD. I've used just such an arrangement.
My problem was that a drill makes a hell of a racket that can really get to you
after a few hours, even with ear plugs. My primary interest was finding leaks
which sometimes takes several hours and several heating - cooling cycles.
Also, I was unable to figure out a good way to mount the drill, and my time is
far too valuable to stand there and hold it for a couple hours.
Nelson
there is a far simpler and just
> as effective method of testing your OD (and gearbox) than building a stand
> and purchasing a large electric motor to turn it.
>
> An electric drill will work fine, as will any air drill that does at least
> 1500RPM. I made the tool from a piece of pipe, some nuts and bolts and an
> old intake valve. I actually prefer this method of testing as it drives the
> gearbox via the input shaft instead of the tail shaft.
>
> http://www.pil.net/~felix/tools/st0001-kmr.html
>
> Easy, cost effective and very effective.
>
> Although I haven't updated it, you can make an input shaft collar out of an
> appropriately sized piece of copper tubing to prevent any marring of the
> metal even though the input shaft is already hardened.
>
> Kai
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