Dan Ruggirello wrote:

Paul,
Attached is a pic of a typical motor mount for the bushcaddy.  It is looking
like the upper center mount point that integrates with the windsheild brace
struts may be problematic because of the water pump and alternator
interfering.  Do you know of anyone using an upper center mount and how they
got around the accesories?  Don Dunbar has a center mount, but I don't know
how he is getting around the accesories.  I would like to keep the stock
water pump location if possible instead of an electric pump.  Any ideas
where to tie into the engine from this center point?

Thanks,
Dan Ruggirello

Good idea Dan as an electric water pump is highly unlikely to work.

The fifth mounting point is not really needed but it could be useful as the rear mount.
Here are couple of possibilities. I'll send them in separate messages
to keep the over all message size down.

The trick is move the main mounts forward around the CG of the engine/PSRU/prop
combination. That reduces the load on the rear mount to a very low value.
Just about any bracket bolted to the top of the engine above the water
pump will work. The ball jointed strut can move around as the main mount rubber
bushings do their thing. All torque, vertical and lateral  loads are
taken by the two main mounts. The rear mount really just keeps the engine
from rotating around the rubber bushings that are located somewhat below
the thrust line. This scheme is used on the Questair Venture
with excellent results. Small rubber bushings will also work instead of the
ball joints and that is what Jerry is using.

The rear strut will also work in a vertical orientation which I will
send some pic on with the next message.

Paul Lamar

Here is how I am doing it on the Kis Cruiser.
Also check the web site for some pictures on the Questair Venture.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.