Spinners

[Graham Singleton <100421.2123@compuserve.com>]

>> So the question is how do I find the centre<<

Not easy, for more reasons than one. Just for starters it isn't round. It's also
much too floppy.

I gave up and turned up a steel mould to make a dished backplate with an
accurate centre hole which exactly fits the Rotax hub. Vacuum bagging and oven
curing gives a nice rigid "Frisby" even without carbon fibre, the effect of the
dishing. With carbon it's so stiff it rings.

Graham