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Old 11-28-2006, 02:36 PM   #1 (permalink)
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Default Wobble problem

I have noticed a wobble that is not related to something being out of ballance.

When I transistion from forward flight to hover, I get a wobble that dissapates over a little time (10 - 30 seconds). Is this something that can be attributed to dampening in the head?

I am running an AL 600 combo, with the align ESC and motor, using the grey dampers, SAB 600mm mains, Align tail.

I took a quick trip to the flying field this AM for flight #5 and was able to get some decent flying in (no thrashing or 3d). I flew a couple of hard climb outs, and circuits to approaches. This is where I noticed the wobble.
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Old 11-28-2006, 03:09 PM   #2 (permalink)
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probably the head speed. what's your throttle curve, battery, blades, pinion, and pitch?
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Old 11-28-2006, 03:14 PM   #3 (permalink)
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check your headspeed... wobble is usually because the HS is too low if you are running stock gearing you should be at 90% or above on the throttle in hover , most run a straight 100% in idleup , also make sure your ESC is getting 100% throttle at full stick either by reprogramming and/or expanding your endpoints on your throttle endpoint adjustment...
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Old 11-28-2006, 03:19 PM   #4 (permalink)
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Yep I am with Kong here.... Head speed is probably low in relation to amount of pitch in the hover.
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Old 11-28-2006, 06:27 PM   #5 (permalink)
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The grey dampeners are the soft ones, aren`t they?

It`s possible to get wobble, if your Head is to soft for the high headspeed.
I would suggest both: increase and decrease your headspeed and see what happens, then insert the black dampeners and try the same.


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Old 11-28-2006, 06:59 PM   #6 (permalink)
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Just took it out for flight #6. I really like this bird

Adjusting the Throttle curve fixed the problem.

Former T-Curve 0-40-80-90-100
New T-Curve 0-45-90-95-100
Idle up 1 100-95-90-95-100
Idle up 2 100-97.5-05-97.5-100

Pitch -9 to +9
Normal P-Curve 40-45-50-75-100
Idle ups 0-25-50-75-100

Thanks for the advice.
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Old 12-24-2006, 10:24 AM   #7 (permalink)
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rookie question perhaps but, what is the purpose of the "05" throttle setting in idle up 2?

thanks,
dave

Quote:
Just took it out for flight #6. I really like this bird

Adjusting the Throttle curve fixed the problem.

Idle up 2 100-97.5-05-97.5-100
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Old 12-24-2006, 11:41 AM   #8 (permalink)
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I would guess its a typo and should read '95', this is the usual mid-stick setting for throttle in idle up 2.
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Old 12-24-2006, 11:43 AM   #9 (permalink)
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I would guess its a typo and should read '95', this is the usual mid-stick setting for throttle in idle up 2.
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Old 12-24-2006, 12:04 PM   #10 (permalink)
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ok, good, I figured I was a challenging throttle curve at first...
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Old 02-10-2007, 04:13 PM   #11 (permalink)
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Man I LOVE HeliFreak!
Just toook my new 600 to the field to try it out & wobbled like heck! Brought it home & went through EVERYTHING to no avil. Get on the Freak & WaLa!

Bumped my curvs up to what staplegun did & that got the biggest majority of it out. I think I'm going to chunck the stock gear & go for an 11 tooth!!
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