JSF Super Cutlass questions

Aug 20, 2003 2 Replies

hi:



i have a friend who asked me for help adding a camera and telemetry to a JSF Super Cutlass. here's the specs he gave me.



plane: JSF Super Cutlass

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- 30" Length - 23" Motor: .45 Gas Engine Prop: Gunther push-on prop (HLFK5555 4.9x4.3 Wingo Prop & Spinner) Speed Control: Kontronik Rondo 400



2 Servos: Graupner C261 Wing loading tested - 5 to 7.5 oz per sq. ft. RTF weight tested - 10 to 15 oz.

he's still buiding this thing. i can't get a hold of him 'cause he's on vacation, but i wan't to think about this while he's gone.



if anyone has flown one of these, maybe you can tell me a few things.



does wing loading (say 7 oz per sq ft) on a 2 sq ft wing mean that the fuse plus payload can be 14 oz?



if not, approx how much extra weight will this thing carry?



what does RTF weight tested - 10 to 15 oz. mean?



what kind of altitude are we dealing with for max payload?



thanks in advance, mike


The engine and prop combination doesn't add up at all. That's a prop for a small electric motor, no way can you use it with the proposed .45 gas (or glow??) engine.

[snip]

thanks.

huh. wonder where he got that idea. the designer hasn't tested with a gas(glow?) engine either. don't know/remember the diff, myself.

the builder thinks the thing might go 4500 ft high barring local FAA restrictions.

mike

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