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I too had problems in getting the flap cross shaft
to have free movement. Luckily I spotted the problem before I committed
myself fully. I did finally get it to move with little or no residual
friction. It was everything to do with the alignment of the bearing blocks at
each end and in the middle and required a lot of "fit and try" It took me
quite a time and was not the easy fit up as per the manual.
I have absolutely no idea whatsoever what the
maximum effort to move the lever should be. As close to zero as possible
is my feel. There is bound to be some residual friction but the flap jack
is a hefty piece of equipment and if you can try the system with an ammeter in
series it might give you an idea of how much power is needed to overcome the
built in friction. If you are well up on the number of amps required to
move the flaps without air load then you must think about what extra amperage
the airload will require and do you have it available
No doubt some of our more erudite brethren could
reduce the problem to a formula but the problem is essentially a practical
one.
Regards
Ian Crowe
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