On Nov 24, 1:20*pm, Johan Nykvist wrote:
At 16:39 20 November 2010, Scott Alexander wrote:



A friend in my club built a pair of winglets for his Standard Cirrus.
His glider is expirmental, mine is not. *The total cost for him was
just a hundred dollars for supplies, and some free guidance from a
local IA/AP. *The finished product looks fantastic! *The mold came
from an American Spirit, which I believe is a copy of the Ventus. *And
the result is that his handling has improved quite a bit. *He did do
some adjustments on the toe-out angle to fine tune it which
supposively helped.

I would like to do the same thing with mine using the exact same
molds. *My Cirrus is a standard airworthiness certificate. *If I were
to do the factory winglet or the Maughmer winglet, the cost is between
3,000-5,000 when it's all said and done. *So that being said, this
option, looks very appealing.

Has anyone in this group dealt with the same sort of deal? *I would be
willing to change my standard airworthiness certificate over to an
expiremental if that is the best solution. *Any guidance is much
appreciated.

Thanks,
Scott

PS Happy Thanksgiving.

If it was me, Id go with the factory, or atlest the STC. *Remember,
the value of the glider will probably rise as much as invested.
Maby im wrong, but maby the valu will be lower than now when
in experimental alternative. *How would u think if you was a
intrested buyer of that glider?

Im sure youre friends winglets improved handeling. But Im also
sure factory or Maughmer performes even better!! *Its just much
more engineering and testing behind it!! *
It might be cheaper in the end, when you want to sell for upgrading to a
Discus2!! =)

Just a thouhgt.

There are no STCs. So the aftermarket winglets on certified gliders
must be being done via a 337.

Darryl