colvid
Flying officer
Posts: 12
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Post by colvid on Nov 27, 2008 3:51:26 GMT 1
Learned to fly on the Super Cub and now have four with brushless and a fifth which is a biplane. Copied the idea from here or Wattflyer. The brushless flys great however just finished the biplane and have no idea if it will fly. Will choose a long runway and see how it lifts off since I am not very experinced. Any suggestions will be appreciated.   |
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Post by flydiver on Nov 27, 2008 4:30:18 GMT 1
This is pure speculation, I've no personal experience with that mod.
Looks like you've added another SC wing below the 1st. You should have way more lift with little more weight. Should take off easily
If that wing is indeed pretty much right below the first the CG should stay in a similar spot and hopefully give you little trouble.
Couldn't tell if there were ailerons but didn't see any hardware. Not sure how the R/L rudder work will be affected. Lower wing appears to have little dihedral and upper wind maybe a tad more? Maybe that's just photographic distortion.
It might be a bit more pitch sensitive than before. Bipes tend to be but they are usually short coupled and that is not the case with the stock Cub fuse.
A long runway and a gentle lift off with immediate throttle chop to see if it glides is maybe a good idea. Looks like you've put some work into that one. Pity to destroy it.
fly
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Post by admiralev on Nov 27, 2008 5:19:29 GMT 1
i see aileron servos faintily on the top wing. looks like there's a linkage running to the bottom wing....some kind of wire. look close and you'll see it.
nice mods. do you have a thing against cowls?
everett
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colvid
Flying officer
Posts: 12
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Post by colvid on Dec 3, 2008 5:17:18 GMT 1
Fly and Everett:
Sorry about late response. Attempted to flatten both wings; lower wing is about 1 1/2" forward. Upper does have alerions. Had an experinced flyer take it up a few day ago and it did fly however would "porposie???". He suggested extended the engine which I am doing.
Any sugestions would be most helpful.
Larry
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colvid
Flying officer
Posts: 12
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Post by colvid on Dec 3, 2008 5:22:03 GMT 1
Everett
Have the engine removed as I type, but would like to add cowling. Have four other Super Cubs with brushless conversion and wish I could fit them with cowlings. Someone used an empty plastic oil container however the weight should be a problem.
Any suggestions for a light weight subsitute?
Larry
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Post by admiralev on Dec 23, 2008 20:00:16 GMT 1
sorry i didnt get back to this post earlier
what's keeping you from using cowls? are the motors too far back or too far forward? forward is an easy fix as you can just buy some SC cowls and cut out the front with some scissors to allow your motor/prop to clear. if you mounted them too far back its a bigger issue. there's really not much you can do except extend the motor mounts to get the prop out beyond where the cowl would go. im not sure of any rock-solid cowl substitutes. you would have to get creative
i would also recommend doing ailerons on the bottom wing as well. you can install control horns and make a linkage that runs to the top set of ailerons so you dont have to run more servos
admiral
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Post by ginginho on Dec 23, 2008 23:12:46 GMT 1
If your motor is too far back I guess you could get a stock cowl and just cut away a thin slice around the rear (mounts to fuse) of it until the motor/prop are clear. A snub-nosed cub!
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Post by admiralev on Dec 24, 2008 1:02:46 GMT 1
thats a really good idea. how come i didnt think of that? there you go colvid, a solution to either of your problems. you're now on your way to becoming a man of cowls
admiral
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