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Post by saffa365 on Jan 25, 2012 11:15:23 GMT 1
Hi guys , i flew my cub today with my aileron mod and it didnt go well at all, the plane all over the place
i didnt flatten the wings in the recommended way and i tried to use the wing supports to pull down the wing , probably a stupid thing to do , would this have negative effects on the performance? im a newbie , but i can fly it well with the standard setup.
if somebody could educate me a little on the adverse affects of using the wing supports to pull down the wing that would be great.
Be kind im still learning..... i do understand that the standard wing helps to bring the plane back to level
cheers
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Post by flydiver on Jan 25, 2012 18:57:25 GMT 1
The 4 problems I see with that method is: 1. higher likelihood of warping the wing 2. the relative instability of it. If either side strut broke during use I think you would be in a world of hurt. 3. Getting it right/even. It will be under tension and flying, especially turning, will change that tension. 4. Puts a lot of load on the fuse. If you bypassed the fuse and had connected the 2 sides to each other (like stringing a bow) that was a really bad idea as the whole assembly would twist back and forth while turning.
It might work, but then it might not. Hard to tell if it was a setup problem or a pilot problem.
Compared to the normal dihedral wing a 'flat' wing with ailerons IS more unstable. It goes where you point it and will continue to do so until YOU straighten it out. The good part is you now have full control. The learning part is you now can never fully stop flying the plane. If you revert back to 'newbie thumbs' and over control you will be all over the place. That's a normal part of the learning curve. I remember my first aileron flight well. I felt like it was something like my 4th or 5th flight. I almost crashed a half dozen times before I sorted it out.
You CAN fly with ailerons and dihedral. The ailerons will be less effective but still work. Try that since you have not permanently changed the wing. Be SURE to check for warp from the tension.
Just to make sure - you DID put the ailerons on the R-stick and moved the rudder to the L-stick? To start you hardly use the rudder, if at all. It's not very effective once the wing is flattened out. In fact rudder alone makes it kind of list over to the side and plummet to the ground-very unnerving. People talk about mixing in rudder with the aileron but I tried that a bunch on my platform, put it on a switch so I could turn it on and off and never did find it very useful. It does work fine on some planes, but not this one, at least for me.
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Post by saffa365 on Jan 25, 2012 19:47:08 GMT 1
Cheers flydiver once again you have given some good insight,
i did move the rudder to the left stick and i also mixed in 20% rudder. with regards to the wing straps i did join them in a bow like fashion with a cable tie , i do think that the wing was warped some what, but i must admit that i will also put it down to newbie thumbs, owe well you live and learn , but i suppose the most important thing is im not going to get disheartened , ive glued everything back together and will try again tomorrow. is it worth removing has much of the dihedral as possible with tape and getting used to it , and then move onto a completely flat wing ? how much travel would you reccommend for a newbie on the ailerons( my ailerons start about 1.5 inches from the elastic wing support and run all the way until the wing starts to curve, they are about 1.5 inches deep) hope this makes sense? Lastly is it important to fill the gap between the aileron and the wing with tape , there is only a 2mm gap roughly.
thanking you in advance
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Post by flydiver on Jan 25, 2012 20:21:47 GMT 1
Joining with the bow was a very bad idea. It would have totally messed it up. It would have see-sawed back and forth with the turning stresses making variable and erratic dihedral.
Start easy. Go back to full dihedral and small aileron deflection, maybe 1/4". You can do this with Dual rates or travel limits if your TX has that ability. Make sure you have a LOT of room as it may turn sluggishly at first. Then just slowly turn up the rates/travel as you get used to it. Get it where you like it. Again, the turning will not be great with full dihedral but it will work.
Practice with the R-thumb and elevator alone for control, but have a lot of height first. It's a skill you'll want eventually and training the R-thumb to turn is a whole new adventure, almost like learning to fly again.
Once you have got that all working well for you, do it, flatten the wing, back off the ailerons just a little and go for it. You can use the tape thing first if you want as a half step.
The gap is not critical. A gap does create drag and you lose some lift. Packing tape can cover it fine or do it later with the wing mod. Fully deflect the aileron down > tape the top, deflect it up > tape the bottom.
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