Let me know if you need more dimensions Jerry.
--  Paul Lamar ...No rotor no motor.

Hi Paul,
wasn't moving the prop out to 44 inches the way to go?

Kind regards
Thomas

I am not sure. Depends on the weight and balance. Some guys are  beefing
up the tail so that adds weight back there. Beefing the tail on the
rotary powered RV4 is unnecessary. Tracy has not had the tail skin  cracking problems
the Lycoming powered airplanes have experienced due to way less  vibration.

-- 
Paul Lamar ...No rotor no motor.

Thomas, most plans, using an 0-320, have the prop flange  at around
38 inches.  I recommend standardizing the distance to 40 inches for
most   rotary installations.  Doing so provides some very useful
space between the engine and firewall.   Note that a p ported engine
will probably weigh less than an 0320 FWF.  The absolute minimum is
36.75 inches if  you want to be able to RR the water pump without
pulling the engine.   If for c.g. reason the prop flange distance
needs to be some amount greater than 40 inches, we can do that.  So
far only one engine installation has required more than 40 inches.
There are no  serious c.g. issues swapping in the rotary but you will
probably have to fine tune with battery placement.    Jerry


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