This trick eliminates the diagonal tube on the right

side

of the engine and replaces it with a cross tube from
rubber bushing mount to rubber bushing mount under the
front of the engine. Saves a bit of weight in the

bargain.

This frees up a lot of room on the right side of the
engine for a really big rad. If you are planning 350 HP
out of your turbo three rotor you will need a really

big rad.

I suggest taking a look at the rad in a Dodge RAM V10

or turbo

diesel pickup truck. It is approximately 32 inches

wide by

24 inches high and  three quarters of an inch thick.

The first

half of the thickness of the rad does three quarters

of the work.

This rad is super light weight, efficient and uses

less heavy

antifreeze to fill it.

Paul Lamar

*********************************************************

Paul!!....."Very impressive clever trick" ;)

The thing to keep in mind is that the loading (Stress)
doubles on the remaining diagonal tube, both in tension
and compression and should be sized accordingly.

                                            Butch

Good point.
Unfortunately I don't know what the lateral load is sorry to say :-)
The British think it is zero. They never braced their
Merlin mounts laterally while the Americans added
a bit of lateral stiffness to the P51 motor mount.
Even Cessna relies on the bending stiffness of the tubes
to provide laterally location.
If you kick the rudder you get a bit of yaw acceleration on
the engine mass.


Paul Lamar
 
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