For a final word on the fastening of flywheels to crankshafts, I would
recommend Carroll Smith's book "Nuts, Bolts, Fasteners and Plumbing
Handbook," Page 93 and Page 116 on the use of locktabs. To summarize, He
doesn't like locktabs, won't allow their use, and if one must use them,
never, never re-use them. Safety wire, on the other hand is your friend,
learn to use it, and then use it frequently and everywhere.
Naturally, this information moves from the recommended to the critical list
if you are racing!!!!!
Good luck,
Michael Singleton
>
> Hi,
>
> Just a word to the wise...
>
> The "lock tabs" that were used on the earlier big TR's were not without
> problems. If the bolts were torqued too tightly, the lock tab crushes
> enough so that the flywheel can move around a bit. If this is the case,
> there are several catastrophic failure modes but in many cases the bolt
> heads shear off.
>
> If you're lucky, you get a vibration and you shut everything off before
> the flywheel comes loose. If you're not lucky - well you could kiss a
> flywheel bye-bye. If you're really unlucky - well, let's just us our
> imagination and think about where the flywheel is in relation to your
> feet and lower extremities.
>
> At any rate, the modern "correct" method of flywheel attachement is to
> make sure the threads are clean and dry and then apply Loctite RED and
> torque to spec.
>
> However, make sure the bolts don't "bottom out" in the crank! If the
> bolts do bottom out (say as in the case where you use a non-standard spec.
> fastener) then the flywheel isn't really "secure" anyway and - bye-bye
> flywheel.
>
> As to the orignal question, I haven't seen a TR6 with a locking tab. I
> have seen them on "tractor TR's".
>
> Regards,
> rml
> --------------------------------------------------------------------------
-----
> Bob Lang Room N42-140Q | This space for rent.
> Consultant MIT Computer Services |
> Voice: (617)253-7438 FAX: (617)258-9535 |
> --------------------------------------------------------------------------
-----
>
>
|