Paul-

I got a chance to weigh the static down force at the rear motor mount
position as you'd asked.

Note, that this was in the tail-down position -- I forgot to prop the
tail up into level flight attitude.

I placed 24lb of weight on the propellor hub -- I suspect this is low;
we will be having a 3-bladed 68" x 90" prop which I guess will weigh
rather more than that.

The measured static weight in this configuration was about 60lb.
Without the 24lb weight on the hub it was over 90lb -- too heavy for me
to lift from the akward position leaning over the motor mount.

Mark & Mark

The Schertz beam is just a smidge too far forward :)
I disected one of those rubber rod ends. You might split
the rubber on a six G hard landing but it it not coming apart
short of a 20G  crash:)

Paul Lamar

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