Jim,
Is there room to put something like a hose clamp around the area where
the splines are missing? If so, cut a couple slots in the outside part,
then find a clamp that fits the O.D. of the plastic part. Assemble and
tighten the clamp. Hose clamps will probably not work because the screw
part of the clamp will throw the balance off. There are crimp type
clamps like what are used on CV joint boots that you may be able to find
a small version of. If not, machine a split aluminum or stainless ring
that will fit around the joint, cut a slot in it then drill & tap a hole
across the split for a pinch bolt.
Peace,
Pat
Thusly spake Jim Franklin, On 1/25/2009 11:57 AM:
> On Jan 25, 2009, at 11:12 AM, Randall wrote:
>
>> Jim,
>>
>> I'm not familiar with "A + B". I use "JB Weld" (the slow curing
>> variety),
>> which seems to outperform everything else I've tried. And IMO it would
>> probably not hold in your application unless you can find something
>> stronger
>> to form the splines (like perhaps steel wire) and use the epoxy just
>> to hold
>> it together. Epoxy makes a strong bond between parts that fit
>> snugly, but
>> has little strength of it's own.
>
>
> Thanks for all the responses. I definietly can't pin it unless I take
> it to a jeweler, and even then all the torque on 2% of the plastic
> would certainly crack the plastic.
>
> www.thistothat.com is very cool! They also recommended JB Weld.
>
> A+B is a putty, equal parts of each. Hand-moldable. Probably just a
> hardening plastic for making surface area.
>
> The splines aren't very defined. There are about 6 depressions on the
> motor shaft, eyeball says about 0.2mm deep and the same wide, and
> soft-shouldered. Not enough to hold a set screw, or steel wire, or
> anything but a liquid that becomes a solid. The parts fit snugly
> enough that I can't make the two slip with my hands. But running the
> DW with water in it, it slips, and if I then apply pressure to the
> impeller, it slips more. So I think I will try JB Weld. If it doesn't
> work I can buy a machinist friend $150 of Scotch and he'll make one
> that'll outlast me :-)
>
> jim
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Pat Horne 512.797.7501
Owner, Horne Systems pat@hornesystemstx.com
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