> I saw a increase of 3 knots average over several runs. Several of us
> here in Florida, USA who have the XS monowheels, installed the speed
> kits-looking for 10 kts advantage.-However it was not to be.
Though visually attractive, I've had my doubts about the mono speed kit.
For example, the flap hinge fairings have a large frontal area and are
open at the rear, neither characteristic will IMHO reduce drag. In my
spare moments I'm working on very narrow FG wrapped balsa skirts which
slip over the hinge plates and fit w/ minor FG moldings at both the
pivot point and wing surface intersection. I'll post pixs when I have
something fitted.
I suspect the biggest source of drag not addressed by the mono SK is
that of the main wheel and wheel well, something which Alex Bowman has
a handle on and shown on pixs posted at:
www.europaowners.orgmodules.php?set_albumName=album149&id=DSCN0096&op
=mo
dload&name=gallery&file=index&include=view_photo.php
The exposed outrigger wheel is a source of drag which the speed kit
fairing doesn't address. Here are some pixs of a fully enclosed
outrigger which has a spring loaded afterbody which hinges up when
flaps are deployed; airstream on mini-tailplane locks it back down when
flaps are raised...this is a prototype not yet tested in flight...(hey,
we're building experimental aircraft, are we not?)
Fred
A194
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