Mailing List flyrotary@lancaironline.net Message #10561
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: Supercharger (was Compressor maps)
Date: Wed, 18 Aug 2004 11:30:25 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message

> For the moment, the lack of static RPM is the only thing keeping me
> from departing the left side of the runway :-)
 
   That sounds reminiscent of the problems F4U drivers had.
You might want to look up the development history of the
Corsair, and see if it offers any useful insights.

Dale R.

Someone told me that the P-51 was the same way, and that you can't use full throttle on takeoff.  I think I know the solution, but I'm not sure I want to do it.  My mount currently has left offset, which used to be a good thing with the B drive.  Now that the C drive gives me left engine torque, having a left offset in the mount is exactly wrong.  I wanted to see how bad it was first, then decide what to do. 
 
The first option is to shim the mount to the right, enough to zero out the torque.  That's as far as I dare shim it, and it will require me to reposition the cowl, which makes me itch to think of the fiberglass work.  The better option is to make, or have made, a new mount, but I just can't face the thought of doing that now. 
 
Rusty (off to check my EC-2 MAP cal)



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