On Oct 22, 12:46 pm, Marc Ramsey wrote:
I've found that the Duo Discus does not take kindly to excessive speed on
approach. There is no elegant way to bleed off the excess energy, you
end up either floating down the runway, or forcing it down hot and
jamming on the brakes. It is best to maintain a proper approach speed
with full dive brakes and slip or S-turn as needed. I've heard that the
Libelle behaves in a similar fashion...

Marc

Hey Marc - The Duo spoilers are much maligned,
but often the problem is the wheelbrake.

Huh ?

Well, the wheelbrake engages at the end of the spoiler
travel. The mechanism is, well, um, even though its a
Cleveland wheel, the mechanism and hydraulics are
shall we say a bit confused.

So, people try to "tighten" the wheelbrake, and end up
just restricting the spoiler travel. And half the time the
wheelbrake still doesn't work.

Anybody have the measurement from wing surface
to spoiler cap, spoiler fully extended, on a properly
adjusted Duo so folks can do a quick check ? I'll
try get one of my partners to measure ours next
weekend...

And yes, I've seen this on Duo's in a number of
different locations...

Hope this helps,
Best Regards, Dave "YO"

PS: Yes, our Duo has effective spoilers, and its
the original model. But we don't trust the brake !