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May 05, 2003, 05:08 PM
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Sabrejock's Avatar
"I don't think there are actually any retract servos that shut down after a given time period, not the one's I've played with anyhow.

Greg"

I explained the problem of servo stall to my e-wizard pal and he said no sweat. I think he has these cheap programmable circuits as described in William's post. They could be programmed to cut out after, say, 4 seconds of on time or whatever. Not necessarily load related but time related. Just as good.

It might mean a belly landing, but hey, half of mine are that way anyhow. With my retract equipped heavies half my wheel down landings require shop work!!!Tex.
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May 05, 2003, 05:33 PM
Single-task at best...
tim hooper's Avatar
Good stuff lads!

Thanks for all the responses (not to mention Tonyo's diagram).

The proposed recipient of all this hardware is a 46" (ish) version of Mark Rittengers Python. I reckon that I could build it without any undercart at about 3lb, whereas it seems that a retract system (including battery & servo) will add at least another 5oz to the AUW.

Hmm............

tim
May 05, 2003, 06:15 PM
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Sabrejock's Avatar
"whereas it seems that a retract system (including battery & servo) will add at least another 5oz to the AUW."

Tim: I don't know about you, but my planes usually have at least that amount of my blood in them. Tex.