Weight saving exercise.

Wood or Metal is also a q of balance, if the plane tend to be tail heavy a
metal prop is better then adding weight, or the other way if...

The hollow steel prop that is/was on Stearman was/is noticeable more
efficient then the common replacement Sensenich wood.

Beach, Ash or Beech is very strong to weight, a mahogany with a lot of clear
coats is a perfect thing to make the other plane owners being jealous.

Jan Carlsson
www.jcpropellerdesign.com

"Fortunat1" skrev i meddelandet ...
"Jan Carlsson"
:

To save weight, if an alu prop weight 30 lb. a birch will be 7 lb.,
mahogany 5.5 lb.

for efficiency, use the aluminium!


Well, in this case the prop would be very efecient indeed. It's a 76 inch
ground adjustable Ham Standard with a very nice section. That menas, of
course, that I can screw around with the pitch to get the perforamnce I
need.

"Jan Carlsson"
:

Wood or Metal is also a q of balance, if the plane tend to be tail
heavy a metal prop is better then adding weight, or the other way
if...

The hollow steel prop that is/was on Stearman was/is noticeable more
efficient then the common replacement Sensenich wood.


Coincidentally, that's pretty much what I have, on a smaller scale.