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Old May 31, 2011, 05:47 PM
biggy boy is offline
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prop wash
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Originally Posted by rhawk1967 View Post
Hey Glenn, Should we be using some aileron differential on the Fox? (less down than up)

Rob.
LOL I haven't payed much attention to whether it is needed or not!?!?

I'm sure one of the other guys will have some insight into that option in regards to the fox. it's always good to experiment .

I've never added it to any of my planes so far but it sure sounds like a good option!


Glen
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Old May 31, 2011, 06:08 PM
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Originally Posted by biggy boy View Post
LOL I haven't payed much attention to whether it is needed or not!?!?

I'm sure one of the other guys will have some insight into that option in regards to the fox. it's always good to experiment .

I've never added it to any of my planes so far but it sure sounds like a good option!


Glen
LOL.....I was doing some research on sailplanes, and most are using it to prevent "adverse yaw". Im wondering if this is why my rolls are more like barrell rolls. the nose seems to go off on its own in a roll. Im gonna try it soon....why not?
Old May 31, 2011, 08:20 PM
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Originally Posted by biggy boy View Post
Hey Kev I can't get the link to work.

is it this scheme? This is the one I suggested a whack of pages back, I use it on my Super cub.








Glen
Yep, that's it mate. Have you noticed yours to improve visibility?

Kev
Old May 31, 2011, 09:19 PM
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Originally Posted by Berkie View Post
Yep, that's it mate. Have you noticed yours to improve visibility?

Kev
I can tell the top from the bottom pretty well! And the colors with the white work better then a plain white wing that's for sure.
I like the contrast between the white and the colors. It make orientation allot quicker for me, but that could also be from flying the cub so much and just getting better at keeping track of what direction it is pointing
But when it comes to sailplanes and you have it up soooooo high that it looks like a speck, I don't think it matters much how it is painted .

In my opinion that is a great article about paint schemes the one your link was for....

Glen
Old May 31, 2011, 10:24 PM
Ant is offline
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Down Thrust


I put in 1/8 inch shims to give the motor (what seems like) quite a bit of down thrust.

Does this sound about right to those of you who have down this?

Ant
Old Jun 01, 2011, 12:32 AM
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Quote:
Originally Posted by rhawk1967 View Post
Hey Glenn, Should we be using some aileron differential on the Fox? (less down than up)

Rob.

I've got aileron differential set up on a switch. It works ok as far as I can notice for keeping flat in the turns. Makes it sluggish if you don't flick it off at slower speeds it seems. If you build up some speed with it on and work the elevator and rudder with your roll I think you'll be surprised at how fast you can get the fox to snap through. Just try it way up high, it feels a little wonky the first couple times.
Old Jun 01, 2011, 02:15 AM
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Differential ailerons are used to reduce adverse yaw in turns. The aileron on the inside of the turn (moving up) is deflected further creating more drag and pulling the nose into the turn. Adverse yaw is the nose moving out of the turn away from the direction you want.

When rolling the direction is straight and standard ailerons should roll straighter and faster. Co-ordinating rudder and elevator can make it much faster if you know what your doing, I Don't, I'm useless with the rudder.

I had dif. set up on mine and removed it when I adjusted C/G and added C/F to the ailerons. I didn't find much difference in turns but the roll is slightly more axial with standard ail. set up

These are my thoughts and experiences, I did not intend to disagree with anyone
Kerry
Old Jun 01, 2011, 02:42 AM
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peace love and RC
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I lost my Fox today in a horrific crash! I don't really understand what happened. Please read my post here ----> https://www.rcgroups.com/forums/show....php?t=1448723
Old Jun 01, 2011, 04:16 AM
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you dont run specturm gear do you?
Old Jun 01, 2011, 04:51 AM
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Quote:
Originally Posted by Ant View Post
I put in 1/8 inch shims to give the motor (what seems like) quite a bit of down thrust.

Does this sound about right to those of you who have down this?

Ant
Quite a bit sounds too much. I think about 3 degrees would be enough

Kev
Old Jun 01, 2011, 07:11 AM
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Originally Posted by tonywayne View Post
I lost my Fox today in a horrific crash! I don't really understand what happened. Please read my post here ----> https://www.rcgroups.com/forums/show....php?t=1448723
Sorry to hear about your plane crash. The servo of the elevator doesn't have enough power to push the elevator upwards, or takes some time(5-10s) to be able to do so under high stress.

If you watch this video here:
Another RC PLANE CRASH - ONBOARD HD Camera footage! (4 min 7 sec)


You might be able to see that the elevator punches up just a few seconds before the crash again and brings it into a "better" angle - the stock servo isn't simply done for high-speed / high-stress situation IMO.
Old Jun 01, 2011, 07:51 AM
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Originally Posted by Berkie View Post
Quite a bit sounds too much. I think about 3 degrees would be enough

Kev
three degrees down and too the right is the norm usually called for from
general airplane setup. But this is not the case in all airplane types.


Glen
Old Jun 01, 2011, 09:10 AM
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Thanks pullup! & Helitime. I am going to leave them as is for now with no diff.

I may make longer ailerons for it later on, but for now I am just going to enjoy it and learn the art of thermal flying.


Its a great sailplane for the $$$.
Old Jun 01, 2011, 10:27 AM
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Originally Posted by lipoflyer View Post
you dont run specturm gear do you?
I do, for 4 years now, never had a problem.

Sorry, my mistake, I am not familiar with SPECTURM

I use Spektrum.
Kerry
Last edited by Helitime; Jun 01, 2011 at 11:47 AM.
Old Jun 01, 2011, 02:50 PM
rhawk1967 is offline
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Originally Posted by Helitime View Post
I do, for 4 years now, never had a problem.

Sorry, my mistake, I am not familiar with SPECTURM

I use Spektrum.
Kerry
LOL..... I use Fubaba and never had a problem.


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