I did away with the X in the bottom plane and put in
two tubes from the nose landing gear bucket near  the firewall to
the rubber bushing holders.

This will better transfer the inertia loads from the
engine into the nose gear if the nose gear hits a pot hole.
Less likely to damage the firewall area.

Everything you see in green was added. Everything else in
gray is stock RV10 motor mount.

Paul Lamar ...No rotor no motor.


Paul,
    I notice this appears to be for a 2 rotor Mazda, any thoughts or plans
for
a 3 Rotor?  By the way, great design.

Timothy

I can do a 3 rotor version no problem. Are you building an RV10 with a 3
rotor.
We have at least two people working on RV10 with 3 rotors as I recall.
--
Paul Lamar ...No rotor no motor.

I am building an RV-10 and I plan to put a 20B in it. I have finished the
tail section, but I am in the Coast Guard and I am transferring from Oregon
to Florida in August, so needless to say my work has halted.  I am picking
up my wings and engine mount enroute to Florida, so while I wait, I have
been doing lots of research.

It would be greatly appreciated if you could do a design for a 3 rotor
engine.  Thank your assistance.

Timothy

I just finished it Tim. Here it is. This is for a custom cowl with
a slightly lower thrust line. For a stock cowl I would raise the thrust
line for you.

Paul Lamar ...No rotor no motor.

Paul,
  Would a James Holy Cowl work with design? How much lower is the thrust
line? Would it be possible to get some drawings with dimensions.  Again you
help is greatly appreciated.

Tim

I don't know if Will James has an RV10 cowl with a low rad air intake. You
could
send them email. Will James <will@jamesaircraft.com>

Bobby Hughes is having an RV10 cowl mold built in Austin TX. Maybe he will
sell
copies.

I'll do a version with the thrust line in the stock position shortly
with dimensions.

BTW if you don't mind side cowl flap louvers the rad could be mounted
on the cool side vertically and the stock cowl intake openings used. Your choice.
Bottom rad or side rad. The side of the cowl is actually lower pressure
than the bottom of the cowl.

Paul Lamar ...No rotor no motor.


I am thinking about going with the rad on the cool side.  What are the
advantages/disadvantages of having the thrust line lower?
Tim

Main problem is prop clearance. Perhaps slightly less drag but that remains
to be seen. This type of heavy hauler needs a large diameter prop for good
take off thrust.

Paul Lamar ...No rotor no motor.

The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.