Windrose II 15-meter Motorglider Plans For Sale

Doug,
The larger space you refer to at root of the wing spar is quite normal. One
tapers the upper and lower spar caps according to the forces you are dealing
with. Unfortunately the Windrose drills through the carbon tow at the root
section effectively reducing the thickness at this point. It would have been
far better to have the carbon tow go around the bolts... or as in the Marske
spar design have the loads transferred to fiberglass blocks without breaking
the carbon tow.

If you look at the rather skimpy poorly written manual it does not mention
the galvanic action that could take place. it would have been good for
first time builders to realize the possibility of galvanic action on the
bolts. I may have missed your reference to the epoxy but I would have
thought that the resons should have been well explained in the plans.

At any rate lets drop this discussion and let the would be builders of the
windrose do their own research.

And anyone wanting windrose plans can have mine for the postage.

I do not recommend building this glider, but it does make for an interesting
study in inboard ailerons that needs a lot of refinement since the Windrose
has not been thoroughly tested nor updated.

The use of the full span elevons of gliders such as the Apis are a lot more
effective and the Apis has been designed by those who are fluent in
aircraft design, thoroughly tested and flown by many.

Those interested in the Windrose should research it carefully on the
internet and see it fly. This is not and aircraft for the low time amateur
builder or low time flyer and should be treated as an interesting
experiment that is not yet complete.

-mat
--
Marske Flying Wings
http://www.continuo.com/marske