Dave, I just bought a set of each size from my friendly Multiplex dealer
(www.polecataero.com) and they look very well made. They are all aluminum
with plastic connector arms, and are actuated by a servo which pulls on an
arm inside the spoiler. The servo can be mounted at most any place and uses
a cable to activate the spoilers The weights are as follows:
250mm long set weighs (for both sides) 2.44 ounces (for 2.6 to 3.6 M
span)
370mm long set weighs (for both sides) 3.58 ounces (for 3.2 to 4.6 M
span)
Well worth the price, very classy. They have a lock when closed, to prevent
them from deploying on launch. Bill Grenoble
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