This is the start of my Thorp T18 engine mount tacked together. When it
comes back from the welder I will tack together the bottom cross pieces.
Am I leaving anything out?? Karibian

I assume those verticals are just temporary as welded them in would hurt and
not help. I cannot see the lower hard points connections so I cannot comment
on those.

The upper connections are inadequate. You need a more traditional cup type
connection where the bolt is in a blind tube. See the 2D sketch attached.
The angle will crack sooner or later. You also will need an X in the bottom
of course. See the attached 3D.

If you have the schertz beam I would bolt it on before the welder did any
final welding. If not make a temporary schertz beam simulator so the mount
does not warp out of alignment with the schertz beam.

Paul Lamar ...No rotor no motor.


I can change the upper mount, as you suggested but I am planning on the main
tension being taken up by another "V" strut fastened above the top of the
landing gear "A" frame as the Thorp does with a regular aircraft engine.
Karibian


----------------------------------

OK send me a sketch. Or do you want me to do a new 3D?
Where and how is it going to be attached at the lower ends?