Mark, sorry for the del;ay in reply but I have been on leave for
a week, apologies. Yes these measurements are for my glasair
sportsman, but most have similar offsets. If in doubt just get a
look at a commanche 400 which looks like the engine is almost
sideways. What I did was to generate a center point out 3 feet
from the firewall (or thereabouts) with a fixed frame, then I made
an extension from the psru and the mounting p[late which had a
point on the other end that was fitted into the offsets drawn on
the firewall. Then an easy job to make up the engine mounts.
Took longer to make up the frame with level and plumb bob.,.
Good luck. Neil.
On 7/11/2017 8:01 AM, Mark McClure
wrote:
Neil,
Are these offsets for Glasair or other aircraft? I
was told by Factory Rep that the Glasair had minimal offsets.
So I was not going to build them in. The other issue I see is
that degrees are based on the exact same thrust point which I
have never been able to get them to give me and I do not have a
cowling to generate.
Mark
Mark, Do not forget the "offsets" with the
engine. The exact numbers can only be sourced from
the factory, but from memory the engine has to face to
the right 1.5 degrees and down 1.78 degrees. Check
these figures with the factory. regards, Neil.
On 7/11/2017 6:35 AM, Mark
McClure wrote:
Well I
think I have designed my mount for the Glasair.
Overall I think it will be a bit overkill but I am ok
with that.
Should put the CG close to the same spot
as for the Lyco. Thrust point in the same spot.
Green bars were part of the Glasair mount for a
Lycoming. (There was also one between the two upper
points but I don’t think any of them are truly
necessary with the stabilization of the plate.
Yellow bar I am calling optional at this point to
make it easier to work with intake/exhaust. Another
idea we had was to weld on a flange for both sides
of the yellow bar and have it bolt on during final
install.
Thoughts?
Mark
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