Paul,


I was wondering about the holding power of the through bolts in an all
Racing Beat all aluminum aircraft rotary engine as compared to say a hybrid
that retained the iron front housing.  Any thoughts on this?


Doug Fir

I think he is using thread inserts. Heli coil or some other brand.

-- 
Paul Lamar ...No rotor no motor.

Paul,


OK Thanks.  For aircraft applications  I think wisdom would dictate
retaining the front iron housing and using only the rear and intermediate
R.B. Aluminum housings.
I say this mainly because the iron front housing is more robust and gives a
few locations to anchor some addition hardware.

Doug.

Doug,
If your worried about threaded aluminium to hold the through  bolts - just
use 4340 threaded ( rolled thread) both ends and nuts both ends, it solves
the problem.
George ( down under)

Can't be done. I looked at this awhile back and the tension bolts
interfere with the front cover and inner passages. Also you still need RTV
on the bolts to damp the violin string vibration.

Of course if you start with a clean sheet and do a custom front cover
like Everett Hatch did no problem.

Paul Lamar ...No rotor no motor.

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