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Spektrum stuff is overpriced IMHO. I own a DX6i and a bunch of AR6200s, but I just bought myself a DSM2 module for the futaba as it's a far better radio. |
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Well everything that helps smoothing fpv video is worth it??? How is the Skywalker compared to hobbyking EPP-FPV 1.8M X-Large EPP & Carbon Fiber R/C Plane? |
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I do know the general consensus is the Skywalker is the "Muttz Nutz" even when compared by others to the HK bird. I was personally very surprised at just how stable it actually is. With CG about 15-20mm behind the servo wires it is all but perfectly pitch stable across the whole throttle range. It holds it's bank angle in turns and only requires a tiny amount of back elevator and inward rudder to hold a constant consistent turn. I tried to stall it the same day I made that video and... it just didn't appear to be interested in stalling. It just started to sink more and more, but I stopped short of provoknig it into a spin with a kick of rudder and full back elevator. Landings are easy even without flaps setup. Only think I'd suggest is adding some carbon strips from root to tip to help prevent the outer wing snapping. |
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Skrattar, you will not notice much improvement on the rudder of an easystar when you are 3 channel.
You really need ailerons and the gyro sensing the roll axis to really stabilize and notice a difference. The Esky 704B is not a bad gyro. I still don't consider it as good as the Gy48V. If you have one, use it, but I don't think it's the one to buy if you don't yet have a gyro. The knobs on that gyro are LIMIT and DELAY, they are not gain dials. Limit controls the servo maximum movements like a travel adjust or endpoint setting on the TX. Thus, you do not use the Travel adjust/endpoint on the TX to set your servo range, you use the gyro. Delay is to control bounce at the end of a quick movement for helicopter tails. Airplane control surfaces don't move nearly as fast as a helicopter tail, so you don't use the delay on the gyro when you have it on an airplane, set that dial fully Counter clockwise (0 delay) to start. |
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I have an example of 3 position gyro settings using the flap switch in the gyro web page already. (2nd video) http://www.mycoolrc.com/gyro/switchprogramming.html |
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Yes in HH mode when the red light is on the gyro is responding to pot adjustment.
But in rate mode nothing happens when turning the pots, can not change limit or delay, no noticeable change. Is there a good guide for modify easystar for ailerons? Where to put the knife so to speak? Do you need 2 gyros to work with ailerons? or can you use like a splitter or so? Would be nice to do crazy rolls with easystar |
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Bruce |
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skrattter, look at the web page and you can mount the gyro just like the one in the vid for aileron example. That's a hawksky that is an easystar clone.
http://www.mycoolrc.com/gyro/indexnew.html (does anyone ever read the first post? ) Landeck, I see small differences in all gyros that have to do with rotation rate vs transmitter travel adjust as well as where the center point is. Not much. HK401B and GY48V once set up are pretty darn close to each other in performance. Perforamce on how well it stabilizes is highly effected not so much by the gyro but by the servos, control surface as well as the lack of slop in the linkages. |
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Last edited by Randino; May 06, 2011 at 10:34 PM.
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Hi Guy's,
I have Read through the thread over the las few days. Thank you for all the info and testing. I also fly helicopters and have one with the flymentor 3 axis gyro with camera which has saved me a fortune as I learnt to fly, but it would be awful on a plane I think. I want to add a gyro (or gyro's) to a 60" glider for Dynamic Soaring. The plane will do about about 300 mph and has about 2-3mm ( don't know inches) throw. I only want it for flying certain spots on certain days to train and limit smashing planes. So, my question is at these speeds using a gyro on only one aileron will it make it more unstable? Has anyone worked out how to 'balance' a gyro on each aileron? I can use a y harness as differential is needed. What does the collective think? |
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I don't know how much flex on a large glider wing will affect lag in the response if your wing flexes. It may make it so you need to keep your gain lower. If you have spoilers, I'm sure that won't work with a Y harness. |
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btw, you CAN use a Y harness and add differential mechanically. It may not beas flexable as a Tx programming but it can be done.
For those others reading this, differential is an aileron surface moving more on one side than the other. It helps a plane initiate some yaw in the turn once the ailerons are used. Typically, you LIFT the turn side wing aileron MORE than the opposite side that is lowering. That adds more drag to the turn side wing making it yaw into the turn and thus initiating the turn as you move the aileron and before you may initiate elevator. IF your servos are on the top, instead of making the horn 90 degrees to the control rod, make it point towards the aileron some. If your servos are on the bottom, you make it point away from the aileron. The more the angle, the more the differential. Of course, your control rod length changes. |
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