> I would hope KK was measuring this with a bare crank sitting on a
> vibration
> table. There is little chance the main bearings would survive or
> even allow
> the crank to bend 5/8 of a inch.
No, I'm pretty sure this was a running engine. Just a WAG, but I'd say he
was trying to troubleshoot a longevity problem ...
> With the crank in a engine, the
> trans pilot
> bearing and clutch would limit deflection.
But perhaps not by much. My understanding was that the 5/8" was measured in
the fore/aft axis, not radially.
> << Curiously enough, his solution was to add weight to the crank,
> to move the
> resonance up above the speed they were trying to turn (which was not
> revealed). >>
>
> At the expense of more rotating mass? Sounds like a hack.
Perhaps. But as I recall, the car (a Sports 6 with a TR6 motor) did quite
well on the track, which is what counts.
Randall
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