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Old 03-16-2002 | 08:21 AM
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majortom-RCU
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From: Merrimack, NH
Default telemaster mods

I found my senior telemaster had very little torsion resistance in the fuselage aft of the wing, so I put some truss sticks in after it was all framed up, and that gave a lot more stiffness. It would have been better to do this while I was framing up rather than afterwards.

I built mine with zero dihedral and dual wing servos--standard size. Standard servos all around, actually. I wanted to try it with flaperons, but I find spoilerons much more useful for bringing it down when the wind forces me to approach over trees close to one end of the field.

I drilled out the aluminum landing gear with a 1/2" bit, probably a couple dozen holes to shed an ounce or two of excess weight. I think if I were building it again I would dispense with the aluminum gear and bend my own music wire, probably 1/8" torsion rod mounted in the fuselage. I don't think they'd weigh any more, probably a bit less than the aluminum, and I like the springiness of them. (I fly off a bumpy grass field.)

With the long fuselage, I wish I had gone for pull-pull elevator and rudder controls instead of nyrods. It would have been easy to do this while framing up, and I may even go back and retrofit.

I had a little twist in my built-up stab, which I corrected with tail brace wires (kevlar, actually). If I were building another, I'd make a built-up fin instead of the sheet balsa, and put a spruce upright in the fin to give a hardpoint for the brace wire.

I powered with an OS 70 Surpass four-stroke and 13x6 prop. I am happy with this combination, but it is for relaxed flying. My dry weight is 9-1/2 pounds, which gives a light wing-loading. I had earlier flown a senior telemaster that I bought at auction, that weighed 15 pounds and came with a ST G90. It flew OK at that weight, but I like the lighter version much better.