Hopefully this isn't an over-discussed item but I just made an
observation regarding TR2 and TR3 flywheels.
I just saw a photo of a TR2 flywheel and it weighed ~20#. My TR3B
flywheel was 30# and just plain solid. Don't know what the TR4 flywheel
looks like or weighs but is there some historical tidbit that explains
why the big jump in weight. The mass moment of inertia is probably not
that far different (~20% more or so) since most of the extra material is
toward the center which has less of an effect on the moment than the
mass toward the perimeter.
My guess is that they wanted to make the later cars more driver friendly
(low end torque for unsteady clutch feet). Any other reasons for this
change?
Mike M
Portland, OR
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