From:
Charlie England <ceengland@bellsouth.net>
To: Rotary
motors in aircraft <flyrotary@lancaironline.net>
Sent: Mon,
May 2, 2011 3:12:58 PM
Subject:
[FlyRotary] Re: hung. (the Renesis, that is ...)
On 5/2/2011 1:50 PM, Ernest Christley wrote:
> Charlie England wrote:
>> Correct. If I use Tracy's tuning, I can do
straight runners. I can't see needing longer than 16", &
that can be done with U shaped tubes with the plenum sitting
next to the block, in front of the top diagonal mount tube.
>>
>> Attached is a shot from the right side.
>>
>
> I like how you have all the bolts loaded in shear. The
only thing is that I like to see tubes in compression
triangulated. They may be there, but obstructed by the
picture angle. Tubes from the bottom attach points to the
top of the stock mount central uptubes would make the mount
much stiffer.
It's try-angry-lated. The two white inner, more or less
vertical tubes attach directly under/behind behind the
capture points on the horizontal square bar. The new
top-down diagonal catches the top; the new bottom-up tubes
catch the ends. Off-axis load paths are at least as good as
most dynafocal offsets on proven mounts. The load into the
bar should be more or less at a 45* angle toward the bottom
of the firewall, minimizing the twisting load on the square
bar.
I considered adding another diagonal between the two
original vertical tubes, but it already has as much angular
bracing as the original dynafocal structure.
Charlie