Another 101 question?

[Bob Towarnicki]

Another question, I am new to 101s and it seems like the threads on the 101 crank on the flywheel side do not come fully out of the flywheel, leaving very little to catch with the nut when using a starter pully. The flywheel is fully seated on the taper. Is there a trick I am missing or is the reduced thread engagement sufficient. I would hate to send a flywheel flying! Thanks again for all the help.
Bob

[Jeff Campbell]

Bob,
It is normal with a starter pulley on a 101 to have less than optimal thread engagement on the nut. I have always used the stock original flanged nuts (they are hardened), without any washers to get the most thread engagement possible. These nuts are 0.380" thick, and with a typical starter pulley you will have about 0.300" of thread engagement, maybe as little as 0.250". The key here is whether you can torque that nut to the factory spec of 300 to 360in-lbs with some locktite on it, then it should hold. Remember the starter torque on the starter pulley will act to loosen the flywheel nut, so that nut really needs to be tight. I've never done it, but you could turn down the pulley if it is very thick, to increase the thread engagement.

Jeff

[jmendoza]

Flange nut, some Loc-Tite, and yes Jeff, we turned the thickness of the cup down a bit for more thread engagement.

[Bob Towarnicki]

Thanks guys. I think I'll turn down the pulley a little and buy some fresh loctite.
Bob