On Thu, 20 Feb 2003, mitch vamos wrote:
> as far as the alum. flywheel walking, i kind of doubt thats a concern
> for most, how many guys actually race and rev their cars to the
> extreme constantly?
There are more of us than you might think. I can probably name 20 or 30
TR6 racers around the country. There's also a few of them on this list!
> if you do that you'll have problems in many areas.
That goes without saying, but the TR6 is pretty robust in many areas and
the less robust parts get re-engineered to become robust.
> i also saw one post that said to make sure you use loctite on the
> bolts. the instructions for my alum. fwheel said don't use loctite and
> use the standard bolts.
I posted the advice about the Loctite. I base that advise on the wisdom of
_many_ Triumph racers. The advice is: if you're using stock bolts, use
high-strength loctite and torque to spec. If you're using ARP, follow
thier directions (and use the moly lube that they include). If you use
something other than the ARP or stock bolts, you're on your own.
Back to the point - the heavy mass of the stock flywheel coupled with
harmonic motion characteristic of the design (only 4 main bearings!) leads
to lots of crank _flex_. If you can reduce the mass of the flywheel (and
clutch assembly, BTW), you will reduce the amount of rotational and
tortional forces on the crank and therefore reduce the potential for
cracks or worse.
And just because you don't race, don't think that you are skirting the
problem. You aren't. We're talking about cars whose newest units are
almost 30 years old...metal can fatigue a lot of 30 years no matter how
you use/abuse it.
regards,
rml
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