efflux RC/Air Sally....F-20, 70mm ALL COMPOSITE w/custom ducts - Page 59 - RC Groups
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Jan 23, 2012, 04:30 PM
Pro Hoarder
turbonut's Avatar
I would kick the root up to 1 deg..with the tip neg at level flight you are loosing some lift..also I find that with smallish wings and no incd. angle the plane tends to fly with it nose up in the air..more drag..if you kick the wing up a bit the fuse sits mostly level in level flight
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Jan 23, 2012, 05:30 PM
deltas are cool
AIR SALLY's Avatar
J post 844
Turbo ,the nose of the F-20 has a ton of lift ...,but i may go +1 that was what i was thinking ,but it flew really nice the way it was
Jan 23, 2012, 07:54 PM
corsair nut's Avatar
the f20 isnt a traditional model though scott. ive scratch built 3 f5 family jets and i find the fly better with 0 incidence..as a large portion of the lift comes from the fuse....i tried a f5 with wing incedence and it look a ton of power to stay in the air as ot was only flying off the wings....ive found they fly better at 0 incidence like the real ones...
Jan 23, 2012, 08:42 PM
Never fly an A model anything!
jayb1rdz's Avatar
Those LEX would add heaps of lift fwd of the CG too. Is that a stupid comment??
Jan 23, 2012, 08:55 PM
deltas are cool
AIR SALLY's Avatar
J no because look where the C/G is ..it is just behind the break of the lex.you are dead right the Lex & nose is what made the real F-20 able to turn so well and allowed a lot of AOA in the turns and maneauvers.
Jan 23, 2012, 09:02 PM
deltas are cool
AIR SALLY's Avatar
im leaning toward the 0 i have due to how well it flew when we tested the small wings it was pusing 145 ish with no gear doosrs on the wheels and the nose gear .how many watts was the power system C/N 1400?
Mar 22, 2012, 01:59 AM
Never fly an A model anything!
jayb1rdz's Avatar
Hey Rog,

Is the F-20 going to make an appearance at Buttonwillow? Pics of this one and the HET 90 mm model in action will be great.
Mar 22, 2012, 02:25 AM
efflux RC's Avatar
I think it's going to happen in Vegas on Oct.
Latest blog entry: Updated blog - Oct 2017
Mar 22, 2012, 02:46 AM
deltas are cool
AIR SALLY's Avatar
i have it on the parting plane doing 2 seams right now preping for the first piece of the fuse mold .the parting board work when it is done will require a bit of touch up ,then final sanding and then start making molds.i'll try to post a pic so you can see what all this entails.only getting about 1-2 hours a day on it ,cold temps make it hard to get more than one process a day done .we had like a foot of snow here on the week end.finally melted today ..say on me this has to get dont this year im as bad as HH and there F-4
Mar 25, 2012, 04:36 AM
Never fly an A model anything!
jayb1rdz's Avatar
Looks great A/S. The only layer missing is the chopped mat.
Mar 25, 2012, 10:39 AM
deltas are cool
AIR SALLY's Avatar
chopped mat ....heaven forbid
Mar 25, 2012, 12:06 PM
Need 4 Speed!
pdawg's Avatar
Looking great! At some point in the future maybe we can do a joint project. I have a big F-20 mold (I am 5' 10") and it looks pretty scale in outline. Dont know much about it but the mold is too thin and only good for a few pulls. One heavy part is all we need though...
Latest blog entry: original Y/A F-18 Kit
Mar 25, 2012, 12:19 PM
michigan jet guy
mrshea's Avatar
that looks like a lot of work. Nice pics though makes me think if could do this. Phil
Mar 25, 2012, 12:32 PM
Registered User
Great glasswork A/S! So will you be producing kits yourself, or sell the molds?


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