Erich,
How bad is the effect you talk about, the twist due to the lower fuse being
distorted. I suppose a twist effect in the right direction could be the reason
so many first flights have "hands off" ability rather than a roll left due to
the asymmetric weight of the pilot. Maybe a twist in the right direction is a
goood thing ;-)
on the basis that the a/c often is flown one up rather than two. ( a bit of an
assumption made there )
Reg
Tony Renshaw
Sydney Australia
Mono Classic Taildragger Convertible
Tail, wings, flaps,ailerons complete.
Cockpit module plumbed and complete ready for installation.
Lower fuse in jig with tailplane torque tube, mass balance, installed.
Intended Engine: 912 S or a turboed single rotor rotary when I am dreaming
Instrumentation: Undecided.
>
>
>Dan and others at this stage, I wrote a modified procedure for this
>operation as well as the bonding in of the rear bulkhead and the pitch tube
>containment bulkhead many years ago. I am sure it is the archives. To
>summarize I would follow what Steve H. has outlined in his message in
>addition to this and for the other tasks listed above I would ensure that
>before bonding in the bulkheads or bushings to first Cleco on the top
>fuselage. My fuselage like many others had a twist in the lower half. As
>it turns out with the top fasten securely the twist is removed. So word to
>the wise, put the top on first (temporarily). I know it is a lot of work to
>prepare for this but it has to be done anyways at some point in time. If
>you don't and you go to all the trouble to make the torque tube level and
>without any fore/aft sweep with the top off and you in fact had a twist in
>the lower fuselage you guessed it. It will no longer be level and will have
>a little sweep. This is because
> the twist is like a corkscrew. I found out the hard way as I was directed
>by the factory to go ahead and leave the twist in. What a mistake. Anyway,
>hope this helps.
>
>Erich Trombley
>A028
>
>
|