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MICHAEL SILVIUS wrote:
Kelly:
The angle bracket on the firewall is actually per the design of the Falconar
F-12. A lot of Jodel engine mounts are this as well. The plans are unclear
as to material it only indicates 1&½" x1/8 thick angle. I tried finding this
in 4130 but was unable to so I settled for mild steel. The triangular end
caps are a great idea and I think I will use it. The design does call, for a
strap to be welded so that it bridges the tube to angle iron on the back
side as well. Here is an example as seen on Hans Teijgeler's Jodel DR1050
with a Subaru in Holland.
Michael Silvius
Scarborough, Maine
Hi Michael,
If many other examples have flown without problem it's probably ok, but I'd be concerned. Did you look for 1 1/2" square tubing in 4130? You could cut that into 2 angles.
The Van's RV series uses a short tube and a washer at that point; it just adds another tube to the cluster when you weld it up. The tube is long enough to give head clearance beside the other tubes in the mount. The bolt goes through the short tube, the washer and then the firewall hardpoint. The washer just spreads the load like the angle does.
FWIW...
Charlie
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