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| Parkflyers · Backyard and Parkflyer RC aircraft models. |
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May 04, 2002, 07:44 AM
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#1 | ||
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Registered User
Join Date: Apr 2002
Location: florida keys
Posts: 52
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Why does it seem everytime I try to "improve" a plane that flies just fine I end up making repairs, uh, I mean modifications? Judging by the posts I read I'm in good company.
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May 04, 2002, 09:04 AM
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#3 | ||
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Rhinebeck CD-99,00,01,02
Join Date: Mar 2001
Location: New Bern, NC
Posts: 2,062
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I often wonder why guys will take a great flying 3 channel model and put ailerons on it, when it was designed to be flown 3 channel in the first place. Had a buddy do that to a great flying model and all but ruined it. It now hangs in his garage, never to fly again. Do we know more the the designers? Tom
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May 04, 2002, 12:09 PM
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#4 | |
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Registered User
Join Date: Nov 2001
Location: Worcester, MA.
Posts: 1,408
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Quote:
But sometimes it does pay off. Like putting ailerons on a Sig Kadet Sr.It's not necessarily that a plane flys better, but that it flys differently, or is capable of different things with ailerons. Usually requires the removal of some dihedral though. |
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May 04, 2002, 12:49 PM
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#5 |
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Rhinebeck CD-99,00,01,02
Join Date: Mar 2001
Location: New Bern, NC
Posts: 2,062
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Exactly what my buddy did. He left the dihedral the same and added ailerons. The setup didn't work worth a darn, and added so much weight and drag that the OS 10 was no longer able to pull it along safely. Darn shame, I flew it on R,E,M, for years and it flew fine. There is now a guy in my club trying to put ailerons on a Wingo. I just walked away when he told me that. Tom
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May 04, 2002, 01:49 PM
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#6 |
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an earth bound misfit, I
Join Date: Sep 2001
Location: St. Pete, Florida
Posts: 9,410
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Hi Tom, it doesn't always have to result in a ruined plane. I'm not claiming I know more than any designer, in fact I know nothing about anything.
 But after flying my GWS Tigermoth with R/E/T I always felt something looked wrong when it turned. After rudder is applied it yaws then banks, then turns. It's not 'right'. So when I built a Hobby Lobby Stearman PT-17 I removed the dihedral to full scale specs and added ailerons. The wings are slightly undercambered. A lot of folks advised that they would not work or would cause adverse yaw. Happily this is not the case. It flies great. And the turns look much more scale than the turns by the 'moth.It's not real aerobatic but will do a nice barrel roll and (at least to me) looks very scale like cruising around in a Stearman like fashion. I'm very happy with my aileron conversion and would do it again. BC |
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May 04, 2002, 09:15 PM
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#10 |
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an earth bound misfit, I
Join Date: Sep 2001
Location: St. Pete, Florida
Posts: 9,410
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Thanks for the kind words everybody.
Tom, it's good to hear you have one too. It is a pretty biplane. I'm using the HL recommended 300 motor also, except with 8 cell 800 mah NiMH packs. Robbie you're probably right, I was worried about adverse yaw and dialed in differential using 2 servos and epa settings. Never tried it with equal movement both ways. In addition to the dihedral and ailerons, I cut the battery hatch in the bottom, redesigned the landing gear and bulkhead and made the wings removable, and don't really feel I messed it up. I never flew it stock so can't really compare but can't image it would fly better without the ailerons. BC |
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