--- D Hauch/ D Unruh <[EMAIL PROTECTED]> wrote:
> Hi,
> Just wondering how you guys rigged up your spoiler servo
> and linkage?

To install the spoiler servo, I made a short pushrod from 1/16" brass
rod. I pounded one end flat and drilled a 1/32" hole in it. Then I bent
the other end into an L-shape. The length of the pushrod has to be just
right; keep reading and you'll see how to figure it out. Get a good fix
on the desired length, then build it as described.

I drilled a 1/4" hole in a square piece of 1/20" plastic sheet. Then I
took a short piece of 1/32" music wire, stuck it through the hole in
the flat end of the brass pushrod. The skinny wire goes across the hole
in the plastic sheet (epoxy the ends to secure it) so when you're done
you have a flat sheet with pushrod hinged to it. 

Make a servo platfor out of 3/16" balsa and glue it into the servo
opening between the ribs. Now you should be able to lay a servo on the
platform with the L-bend stuck into the servo arm and the plastic sheet
against the underside of the spoiler. 

Dry fit everything using a servo driver until you are satisfied that it
will close snugly and open far enough. When all is well, glue in the
servo with the output arm in place and the hinged pushrod and plastic
plate flapping loosely. When the servo is affixed, put a drop of CA on
the plastic and put it in the *right* place and squeeze with your thumb
for a few seconds.

This linkage performs perfectly and is easier to do than to explain.



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