Perry Mick wrote:

OK, here is DWG drawn to scale, to the nearest .05 inch as I was able to
measure. You should be able to open this in Rhino.
The flywheel is thicker than 1/4", the prop drive is 5/8" thick so would
act as a stiffener.

Perry

I think something like this would be safer and lighter with the aluminum flywheel.
All the loads go into that counter-weight/flywheel-hub sooner or later.

Unless of course you wanted to use a large diameter composite shaft extension
like Charlie Airesman did and then I would suggest beefing up the aluminum flywheel.
There are simple ways of doing that without adding too much weight.

Paul Lamar

Yes, I was thinking of doing exactly that, a large carbon fiber shaft
extension with a much larger hub diameter on the fan than I have now. If
so, what would I do to the aluminum flywheel to beef it up?
Here is a drawing with the larger fan hub, longer duct exit that is
almost straight. The expanded exit area comes mostly from the large fan
hub tapering to a exit cone. There would be no rad inside the cowl, I
want to put a surface rad all around the inside of the duct exit. Maybe
adding heat to the air back there will add pressure and thrust!

Perry

OK here it is.

Paul Lamar
 
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