[6pack] [TR] TR6 counter shaft

Tomislav Marincic tomislav.marincic at earthlink.net
Sat Feb 9 12:33:18 MST 2008


Al,

There was a bad batch of countershafts/layshafts a few years ago that wore out quickly. I would wager both TRF and Moss have good ones now, but don't buy one that's been on the shelf at some vendor for a while.

IN MY OPINION, part of the problem is that the later transmissions use "caged" roller bearings on the countershaft. These come with their own bearing surface, so when you replace the bearing, it rides on a new piece of metal, not on the shaft itself. If you use the older style "open" bearings, however, they ride directly on the shaft, so a soft shaft will get chewed up in short order. Perhaps the manufacturer that made the batch of soft layshafts presumed we would all be using caged bearings?

The good news is the later-style caged bearings can be used in early transmissions, making the layshaft choice less critical. Since I'm an obsessive-compulsive personality in training, I used a hardened layshaft that had been machined to accept a third bearing, like the 2500 Police sedans supposedly use. 50% more bearing area, plus caged bearings, so if the shaft was soft it shouldn't be a high wear item.

Good Luck, Tom


"Beware of all enterprises that require new clothes" Henry David Thoreau

http://www.triumphowners.com/735


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