| Hi all. Sorry about not updating this information for so long, but between
waiting for retracts/job hunting/finding new job/starting new job/flying/building Corsair
ARF/Family Time, I haven't done a whole lot with the Spit kit(nice rhyme 8^)). Once I
received the retracts(special order from Robart), I deliberated over how to install them
for quite a while. With some advice from a fellow club member I eventually installed them
as shown in the pictures.
Due to the nature of the retracts(fold back at an angle), I had to double the main spar
to make room for cutting the slot that the wheels fold into. I also put reinforcement
along the leading edge at the same point.
I made the retract mounts out of 1/4" plywood. I eyeballed the angle of the slot
by holding the retract between the ribs and working it up and down until I was satisfied
with the up and down positions. I then marked the plywood and cut the slot(with a little
room to spare so I could move the retract a bit if necessary). After that, I placed the
retract in the slot and angled the mounting plate this way and that while moving the
retract up and down to get the right alignment. When the wheels are in the down position,
they should be at or very near the leading edge. I'm not sure what the scale measurement
would be, but I wanted to make sure I didn't have problems with the Spit nosing over when
landing in grass. This is prevented by making sure the wheels are forward of the CG and at
a slight forward angle. The wheels should also have a slight toe-in and the camber(I think
this is what it's called) should be slightly in also. This helps the aircraft track better
while on the ground. Once I was happy with the alignment, I tack glued the mounting plate.
I then epoxied the plate in, drilled mounting holes, and mounted the retracts with 4-40
bolts and blind nuts.
Please note that this is not a scale angle. I was just attempting to make it look
similar to the full scale aircraft.
Now that was the short story. I actually had a problem with the dihedral as mentioned
in a previous post. After installing one retract, Eric Sarkissian(a fellow modeler who
kindly responded to some of the construction info) convinced me to fix the problem.
Unfortunately, the side that needed fixing was the same side as the retract I had just
installed. Needless to say, I had to cut out the mounting plate to fix the problem. But I
will go into that with the next post when I have pictures of the dihedral repair and
completed retract mountings. |