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Aug 01, 2010, 08:18 AM
"RC ADDICT" in Toronto!
wollins's Avatar

Retracts question

I'm new to retracts and am somewhat confused as to what the various types "in degrees" mean ...

For instance I've seen one site state their availability as in the following statement ...

We have 90 main units and 85 main units for you P-51, P-47 guys out there.

What does that mean? Whats the difference between between the 90 and the 85? (besides one being 5 degrees more than the other!) Is it that the struts iin the 85 degree ones are "bent in" 5 degrees more in the locked position whereas the 90 degree ones are straight (90 degrees parallel to the wing) in the down position?

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Aug 01, 2010, 10:01 AM
Registered User
LesUyeda's Avatar
It is actually the travel of the leg. If you have a wing with dihedral, and install a pair of 90 degree retracts in it, when they are extended they will NOT be perpindicular to the ground. Low wing planes usually have 5 to 6 degrees of dihedral.


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