Wrathall Mark wrote:

Ian, congratulations for getting another wankel powered RV flying. Looking
at the pictures you posted, it would be a good idea for you to read AC
43.13-1b again. (http://www.faa.gov/avr/afs/300/pdf/1c-toc.pdf). Especially
the information on supporting tubes and wirings.

 A couple of thing I see:
That radiator hose hanging unsupported on the welded radiator fitting will
likely fatigue the weld, and or chaff on the  oil filter housing. You have a
clamp on top of the engine, but that still leaves about 12 inches swinging
freely. It also appears to sit on the firsleeving of the fuel line.

The unsupported breather hose running between the plugs chaffing through on
a plug.

Unsupported line (throttle cable?) running across the top of you airbox
chaffing against the cowl and airbox.

Neither photo clearly shows any clamping on the ignition leads, but that
might just be the angle.

The PSRU oiling is small diameter rigid aluminium tubing. I can see a few
clamps there, but this is a known failure cause on other installations.

Im sure when you come to finishing the firewall forward, many of the best
laid plans fail to work due to interference, so you just do what is required
to get it working. It is important to then audit the installation and modify
out as many latent failure modes as you can before vibration starts to break
things.

Mark Wrathall
http://www.rotary.microcosman.com

 
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