Reflexing ailerons as spoilers?  
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All Forums >> RC Airplanes >> RC Gliders, Sailplanes and Slope Soaring >> Reflexing ailerons as spoilers? Page: [1]

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Reflexing ailerons as spoilers? - 11/28/2007 4:00:39 AM   
wsmalley



Posts: 1041
Joined: 2/16/2002
From: Monterey, TN, USA
Status: offline 		Retrofitting ailerons on an old 3M, had rudder and elevator only. Using 2 micro servos in the wings and was planning to reflex the ailerons a few degrees as spoilers-something I read in a book. Wondering if I'd be better retroing spoilers or if the reflex idea works? Any experience with this? Bill

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If I die, and I have the most toys, what do I win?
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RE: Reflexing ailerons as spoilers? - 11/28/2007 4:09:39 AM   
rscarawa


 

Posts: 543
Joined: 1/26/2004
From: Dallas, NC, USA
Status: offline 		My limited experiance has shown that reflex works pretty good. Just remember that while reflexed, you give up some or all roll control provided by the ailerons. If it is a poly machine, you may be able to use rudder to steer some while fully reflexed.

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Scot

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RE: Reflexing ailerons as spoilers? - 11/28/2007 12:42:05 PM   
torgust


 

Posts: 27
Joined: 5/13/2006
From: Trondheim, NORWAY
Status: offline 		Also expect the plane to go either up or down when setting the spoilerons (ailerons raised up as spoilers). How much depends on how much spoilerons you set of course.
One should believe the plane would go down when raising both ailerons, but this is not always the case. For instance i hava a X-models Blade which almost looped the first time i raised both ailerons all the way up. Hence You must test Your spoileronsettings in high altitude the first times to get an idea on what kind of elevator input you need to compensate for this.

Spoilerons clearly help slowing the plane down, and also increases the sink-rate so it will be easyer to get the plane down on thight landing spots.

Of course if you retrofit the plane with both ailerons and flaps You could use a butterflymix to slow the plane down. That would clearly be the best choice

good luck

< Message edited by torgust -- 11/28/2007 12:45:26 PM >

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RE: Reflexing ailerons as spoilers? - 11/28/2007 6:02:01 PM   
glover1482



Posts: 260
Joined: 11/14/2005
From: Salem, OR, USA
Status: offline 		I frequently use a few degrees of aileron reflex on slope toys to get a little additional speed and as an aid in penetrating high winds.

I also use a much greater reflex deflection to get a steeper glide during landing. During such landings it is usually necessary to also apply some elevator deflection to control pitch changes. I do this using the "crow" or "butterfly" mix on my TX. Spoilerons on landing do not slow my toys down any, but do help me hit a tight landing spot.

Fly safe, Glover

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RE: Reflexing ailerons as spoilers? - 11/28/2007 9:12:27 PM   
rscarawa


 

Posts: 543
Joined: 1/26/2004
From: Dallas, NC, USA
Status: offline 		To add to torgust's comments, I used spoilers on a Spirit 100 with v-tail at one point. As I raised the spoilers with no mixing, the nose rose steeply. This added to the drag that I needed to slow the ship down. Funny thing is it never stalled while the nose was way up. The reflex seemed to prevent the outer panels from stalling.

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Scot

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RE: Reflexing ailerons as spoilers? - 11/28/2007 10:08:49 PM   
wsmalley



Posts: 1041
Joined: 2/16/2002
From: Monterey, TN, USA
Status: offline 		That's reassuring. I bought this plane from an old club member's wife and have to say, it was the worst building job I've ever seen. Don't know if a it was a kid's first plane, or what. The wings looked crooked so I stripped the covering and found the thing had been built with hot glue! Half the ribs weren't attached to the trailing edge which was wavy. The glass fuse had been pretty well butchered. The rudder was a slab of 1/4 balsa with bolt and nuts everywhere. It seemed one wing had a healthy amount of washout, the other panel didn't. I've spent hours rebuilding the thing, but built the wing tips flat, and cut in the ailerons. The reflex may help the lack of washout. I have not had a whole lot of luck flying gliders with rudder and elevator only- I tend to use to much rudder and get into a tip stall.

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If I die, and I have the most toys, what do I win?

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