Fred Osborn wrote:

Brian Trubee wrote:

I took this pictuure of a broken e-shaft that they had laying around.

Brian, Did you notice, was that e-shaft frozen in the stationary gear?
I can't understand how the normal torque load on that end of the shaft
could break it unless it was frozen or close to it. Could the unbalance
have been so bad that this was a fatigue failure?

I ask because I have made an e-shaft for a single rotor by machining a
shrink fit joint near the location of this break. I would not fly that
shaft but I badly want to get a test engine running and have not been
able to find any source for a single rotor e-shaft. My test shaft
depends on the torque load at that break point being quite low. If
that is not a reasonable assumption then I am stuck until someone
can/will supply a one-piece single rotor shaft,

Fred O.

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.