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Rebel control stiffness in cold weather

Posted: Sun Feb 19, 2012 5:37 pm
by Walter Klatt
I did some high flying today in the mountains, where the OAT was down to -6
C for an extended time. I noticed a slight stiffness in my controls, both
elevator and flaperons. I have never noticed that in the past. Hard to
believe, but have probably never flown in that cold before. Normally, don't
go up there except in the summer when I am doing XC trips, and the temps are
still always above freezing, even up at 10,000 feet. And in the winter, I
usually only fly in good weather, when again the temps are well above
freezing. So this may well have been the coldest weather my Rebel has seen.
When I came back down to sea level and warm temps (+14 C), the controls were
back to normal.



Just wondering about you guys out east and in the interior of BC. You must
do a lot of flying in the cold. Is this normal to feel some stiffness in the
controls in cold weather?



Does the delrin absorb some moisture and then freeze and expand in cold
weather? I do not lubricate these joints, but was thinking of trying some
Boeshield on them. It is supposed to displace moisture, and is used in
commercial aircraft, and is also popular in the marine industry because it
prevents corrosion. Is there any other lubricant that can be used with
delrin?



Walter





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