PAUL, Bill has indicated some doubt about the thrust line  location so
we should not depend on it.  I am happy with it being on center
horizontally but the vertical position is not clear.  I guess it is
not indicated on the plans. It seems strange that such basic
information is not supplied by Lancair.   Jerry

It is probably equidistant from the rubber bushings on
the Lyc dynafocal mount. Measure up from the ground
to the bottom rubber bushings and then to the top
and split the difference. Does Bill have the cowl yet?
Measuring the cowl placed against a right angle wall
will do the same thing.

--  Paul Lamar ...No rotor no motor.

Paul,the thrust line created by the Dynofocal  is NOT equidistant
between the mounts.  Here is a diagram.  Jerry

Thanks Jerry. I'll make a note of remembering that.
I think we had this discussion a long time ago.
I also think you uploaded it before but I could not find
the dwg. This dwg is good to keep around.

I can still use it using these dimensions to determine
the exact thrust line position.

Paul Lamar ...No rotor no motor.

Good.  I hope the strut can be tied to the nose gear structure. Will
you have a chance to look at that?  Offsetting the engine will throw
the strut out of alignment....

  The  bay between the firewall and engine  is tempting.  I have
mentally  put  a muffler and a rad  in there together, well shielded
from each other of course.  It could also contain a shielded,
insulated box for the EC2- or maybe an extra luggage bin....header
tank?  I'm jealous.   I wish I had that space in the Tailwind.     Jerry

Yes shortly. Offsetting the engine will need not throw the strut out
of alignment.

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

This is what I have so far. Does this look right?

Paul Lamar ...No rotor no motor.

Yes, it looks right.  Jerry

The thrust line still looks low to me. Are you guys sure it is
five and some inches below the upper hard points?

Looking at these pictures and knowing what we know about
the Lyc mount the actual thrust line looks higher. It looks
like the thrust line is right about on the same level
as the upper firewall hard points.

Perhaps we could ask Lancair to give us the dimensions
relative to the firewall hard points instead of the
canopy rails.

Paul Lamar ...No rotor no motor.

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