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08-08-2008, 09:32 PM
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#1 |
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RCC Supreme Contributor
I am: Andrew Coholic
Join Date: Sep 2002
Location: Timmins, Northern Ontario
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JR 12X, 28X Feedback: 47 / 100%
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flap question - my new Phoenix jet
Just getting around finally to setting up the Phoenix. I was slightly delayed by getting ready and participating in the IMAC Nats last week.
So, I have everything dialed in... as per the book. However, the manual states 70mm down flap for full flap setting. I can get a LOT more (basically 80 degrees down). Should I leave them at the 70mm down, or go for whatever I can get? AJC
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Andrew Coholic -MAAC #26287L 1/2A to giant scale, IMAC, SAM, R/C sport, turbine jets, Heli's... if its got a wing or two and an engine - I like it! |
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08-09-2008, 07:28 AM
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#3 |
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RCC Contributor
I am: Ted A
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Re: flap question - my new Phoenix jet
Hi Peter
In some cases exsessive flap deflection can cause a disturbance of air flow to the elevator ie SM Hawk with full flap the elevator autority is almost zero hence the air flow deflectors installed just forward of the stab to stablize the flow of air Good Luck Ted |
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08-09-2008, 07:55 AM
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#4 |
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RCC Supreme Contributor
I am: Andrew Coholic
Join Date: Sep 2002
Location: Timmins, Northern Ontario
Radio of choice:
JR 12X, 28X Feedback: 47 / 100%
Posts: 12,277
Total Props: 61
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Re: flap question - my new Phoenix jet
Ted, in the Phoenix the elvator is about 8 or 10 inches higher than the wing. I was under the assumption that flaps are most effective when they are down near 90 degrees.
However I guess I can start at 70mm down and lower then a little if I find the plane doesnt want to slow down enough? Hey Jim Brown, what setting are you using?? AJC
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Andrew Coholic -MAAC #26287L 1/2A to giant scale, IMAC, SAM, R/C sport, turbine jets, Heli's... if its got a wing or two and an engine - I like it! |
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08-13-2008, 07:40 PM
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#5 |
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RCC Supreme Contributor
I am: Jim Brown
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Re: flap question - my new Phoenix jet
Hey Andrew,
Just sent you a reply to your PM on this. But I think I got my measurements wrong. Ignore the 120mm bit. As I mentioned, I've got mine set to somewhere between 60 and 70 degrees. Keep a bit of power on until very short final. Good luck! ...jim |
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08-13-2008, 09:20 PM
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#7 |
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RCC Supreme Contributor
I am: Andrew Coholic
Join Date: Sep 2002
Location: Timmins, Northern Ontario
Radio of choice:
JR 12X, 28X Feedback: 47 / 100%
Posts: 12,277
Total Props: 61
|
Re: flap question - my new Phoenix jet
OK, gotcha! 70mm as per the manual it is...
Test flight pending Monday or Tuesday of next week, I am off to another IMAC contest this weekend. I just bought some fresh kero today..  Now I just have to wait a few more days.AJC
__________________
Andrew Coholic -MAAC #26287L 1/2A to giant scale, IMAC, SAM, R/C sport, turbine jets, Heli's... if its got a wing or two and an engine - I like it! |
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