Re: Shaft coupler question

[Eric Jelinski <jelinski@idirect.com>]

At 05:23 PM 1/31/01 -0800, you wrote:
>where they can fabricate tempered splined shaft coupler?

I have build several very simple and inexpensive clutchless adaptors.

1)  save the original clutch disk and dissassemble the disk to save the
center spline portion (cut away the rest with an angle grinder wheel).   In
some cases there might be enough of a flange to drill 1/2 dozen holes for
which you use 1/4-20 cap screws (many as you can) around the edge and this
spline piece is screwed onto a taperlock coupling.  Note that the taperlock
coupling fits the motor shaft, but needs a hole shoulder to accept and
center the boss on the spline piece.  Screw holes for the spline piece and
taperlock have to not interfere with each other.  Any machine shop can make
this piece.

2)  I've also fastenned the spline piece by welding.   This I would not
advise for novice welders.   I've done it with cherry red preheat and post
heat with slow cooldown in a brick oven.   I''ve not seen anything come
apart by cracking or stress corrosion cracking yet, or stripping of the
spline since it is originally a hardened steel, it would be softened by the
heating procedure.   I had thought of re-hardening it by oil quenching
after the post heat treatment... just a thought,  wondering what others
have done.
regards,   Eric.