Sealing an ASW 28 canopy

Udo,

Interesting, I'll have a look at my ASH26E.

Might it also be possible to include a check-valve sort of flap that would
allow exhaust but would prevent dirt from the tailwheel from entering the
tail boom?

bumper

"Udo Rumpf" wrote in message
...
Bumper,
When I discovered no air was getting out through any of the tail assembly
in my 24, I simply made a 11/2" hole over the drain hole in the tail
wheel
fender. Ahead of the fender is a bulk head that has a nice large opening.
The standard tail wheel leaves enough
clearance around the fender frame to allow air to be sucked out.
The only disadvantage would be if you land in a muddy field.
That is a trade off I am willing to make.
Regards
Udo

Might it also be possible to include a check-valve sort of flap that would
allow exhaust but would prevent dirt from the tailwheel from entering the
tail boom?

bumper

I have given it some thought.
Installing a brush wiper at the front and rear to clean the rolling face.
of the wheel. Also a smaller wheel would allow a secondary fender.
The original wheel is about ~7". A 6" wheel would be large enough.
That would allow room for some sort of baffle.
Udo

bumper wrote:
Udo,

Interesting, I'll have a look at my ASH26E.

Might it also be possible to include a check-valve sort of flap that would
allow exhaust but would prevent dirt from the tailwheel from entering the
tail boom?

There appears to be plenty of exit area in the tail of my ASH 26 E
through the rudder horn fairings and openings in tail bulkheads. I
suspect restrictions, if any, are due to the engine box, or even just
stuffing the baggage compartment full with a down jacket, as I do.

Even so, my 26 has too much ventilation flow, so I've blocked off the
left side duct in the nose. I've heard of at least one pilot of an ASW
27 that made the nose intake hole smaller to achieve the same thing. My
guess is Udo's problem is specific to his glider, and not ASW 24 and
later models in general.

Craig Shaber had an exit (reverse NACA duct) installed in his ASH 26 on
the right side of the fuselage near the wheel doors, but I don't recall
if he thought it improved anything. Other pilots have done this to
various gliders, rather than trying to get the air all the way to the tail.

--
Change "netto" to "net" to email me directly

Eric Greenwell
Washington State
USA

Eric Greenwell wrote:


Even so, my 26 has too much ventilation flow, so I've blocked off the
left side duct in the nose. I've heard of at least one pilot of an ASW
27 that made the nose intake hole smaller to achieve the same thing. My
guess is Udo's problem is specific to his glider, and not ASW 24 and
later models in general.

I would agree -- when I had a '24, I thought the ventilation was very good.