Paul
  Some time when you get a chance could you have your machinist buddy give
  me a quote on making this plate?  It's aluminum and fairly simple.  The
  center hole is really the only part I can't do myself.
  Thanks
  Randy


  That taper on the center hole would be a real problem
  to do on an end mill with out a special tool I suspect.

  Since it is not critical I would cut it under-size and use
  a die grinder to taper it.


  BTW Roberto, this is Randy Lewis's turbo charged 12A one rotor.
  Handy in the Alps.

  Paul Lamar



Hi you can do the taper on a lathe with a boring bar and the compound
slide
set to your angle.

Murry I. Rozansky

Our lathe is not that big.

If we find a shop with a big enough lathe it is more likely to cost more
than it is worth.

Paul Lamar


Hi Paul,
If I am reading the drawing correctly, the hole is in the center of 6.00".
The part could be bolted to a face plate or a stub (6'' turned down to~2")
that could be chucked.
Murry

Yep that would work.

Paul Lamar