Hi Dick,
I bought a rebuilt OD transmission from John Esposito for my TR250
restoration, so I still have my original cross shaft and pin in my
original trans (60K miles).
Sounds like maybe I should use the old original pin and cross shaft
rather than the TRF replacements?
I think Nelson did not like the idea of the roll pin because they flexed
and would therefore not add much additional strength over the taper pin
-- not much "sharing". Is a hardened roll pin different? Any thoughts
would be appreciated.
Don Malling
Sally or Dick Taylor wrote:
> Vance---My original pin was in there for 27 years before I was convinced
> to change it. The new, replacement broke within two months. Guess what
> pin is back in there now?! But...
>
> It has an accomplice. A 1/4" socket head cap screw and nyloc nut. I used
> the socket head because they're typically slightly oversized. (.251)
> When drilling the hole thru the fork and cross shaft with a 1/4" drill
> this makes it a snug fit.
>
> I think I would prefer the roll pin over the bolt. (I didn't happen to
> have the right sized roll pin in my fastener collection at the time.)
> Either way, we want the second "pin" to share the stress with the
> tapered pin, so it needs to be tight and not just a backup.
>
> I don't know what the deal is with the older (original?) pins. If they
> were too hard, they might break. Too soft and they'd bend. So I guess
> they're just tough.
>
> Dick
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