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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsOther › Flybarless flying question
04-03-2009 12:24 AM  9 years agoPost 1
rapidity

rrVeteran

ohio

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When fast forward flying, shouldn't the nose hold in the attitude you put it in? Just wondering because I have to keep feeding in forward stick every 5 seconds or so. Or do I just need to do some more adjusting.

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04-03-2009 12:39 AM  9 years agoPost 2
marc28

rrVeteran

new york

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what electronic stabilization system are you using,if any

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04-03-2009 12:50 AM  9 years agoPost 3
rapidity

rrVeteran

ohio

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It's the SK, but I considered it just a general question about the way flybarless flys. I would assume it would hold until I change the attitude, or is that not right?

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04-03-2009 12:58 AM  9 years agoPost 4
altima1779

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Toledo, oh u.s

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I know the v-bar used to use a speed sensor to help with pitching up. Now it is no longer needed with the newer programming. I also found it helpful to put a little down trim when the swash is at full pitch. In the v-bar programming you can adjust trim at full down, mid and full up stick positions. Maybe sk has that same option.

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04-03-2009 01:15 AM  9 years agoPost 5
stocky

rrKey Veteran

Taxachusetts

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The SK needs CG at the main shaft or a little nose heavy (per SK manual) I found that even slightly tail heavy would cause your symptoms, I moved the lipo just a little forward to correct the balance and I now don't need to touch the elev in any FFF.

Rex 500
Basic 3D file

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04-03-2009 01:25 AM  9 years agoPost 6
rapidity

rrVeteran

ohio

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I was just thinking if it could be a vibration type issue. Mine's on a 600N. Kind of like the tail drift you sometimes get from your tail gyro.

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04-03-2009 01:28 AM  9 years agoPost 7
altima1779

rrKey Veteran

Toledo, oh u.s

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I also found that when i was tail heavy the nose would pitch up in flight. I actually added a little weight to the nose and it solved my pitching up problem.

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04-03-2009 01:43 AM  9 years agoPost 8
rapidity

rrVeteran

ohio

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I'll ck that out.

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04-03-2009 08:31 AM  9 years agoPost 9
Stolla

rrKey Veteran

Port elizabeth South Africa

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Once you have trim and cg set-up correct it should stay level. I've seen LLoyds vbar logo 400 fly level, hands off straight into 40km/h winds, this while flybarred 90's pitch up and down
I don't know the SK at all but if you can increase hiller percentage it may prevent ballooning of the heli in f/forward flight

Common sense may not be common after all

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04-03-2009 11:09 AM  9 years agoPost 10
Ben-T-Spindle

rrProfessor

Central Illinois

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I fly the SK360 and it sounds to me like you need a lot more hiller gain. If you can’t use more gain without oscillations them you need batter servos so you can gun the gain higher. I have a E620 with BLS451 servos and it locks in perfectly in forward flight.

... BTS

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04-03-2009 12:10 PM  9 years agoPost 11
rapidity

rrVeteran

ohio

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I'm gonna ck the cg first as I set it up without fuel, so I may be somewhat tail heavy. I'm using the 3D setup file and haven't made any changes to the program. If the cg doesn't fix it, I'll play with the hiller gain. I'm running new 8717's.

Thanks everyone for the input. I appreciate all the ideas.

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