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HomeAircraftHelicopterGasser Model RC HelicoptersOther › P Gasser weird twitch in tail.
05-03-2005 06:26 AM  13 years agoPost 1
mannysouza

rrNovice

southern bay area

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I have a weird twitch in my tail. I have a brand new P Gasser SE with the hanson modified G26. I have done everything to get it out to my knowledge. I balanced the main blades, tail blades and flybar. I have checked the fan washout and it's around 0.0015 out. Shimmed the tail (no slop).I've moved the gyro from front to back and with thick and thin servo tape. The gyro worked perfect in my Raptor30. I'm at the end of my wits and I need help. Any Ideas?
PLEASE HELP I WANT TO FLY!!!

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05-03-2005 06:36 AM  13 years agoPost 2
AGRAV8

rrProfessor

Mosquito Coast......Houston Texas

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Sure
your needle settings on it will cause it to "bump" or "twitch", because it should be rich during break-in. If it is a VERTICAL twitching then the low needle is too lean.

I like it to bump every 5-10 seconds during break-in. Lean the low needle until the left/right twitch is that interval.

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05-03-2005 06:43 AM  13 years agoPost 3
mannysouza

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southern bay area

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When you say vertical twitch do you meen up and down . Well mine twitches side to side. also it will be smooth for a few seconds and then do the twitch and then go smooth and the do it again over and over. i can see the tail servo moving . What do you mean by bump it every 10 or 15 seconds.

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05-03-2005 06:59 AM  13 years agoPost 4
lakespinner2

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north carolina

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Hi James,

Question: I have seen my tail do the vertical twitch occasionally, not very often but sometimes. If i richen the low needle a smidgeon would the engine temp change noticeably after a flight.

I guess I'm wondering if the low needle (richening) would cause the engine to run cooler in normal flying conditions. I'm running on the high side of normal temps, maybe I could eliminate the occasional vertical twitch and get a few degrees cooler in the process. It's all good.

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05-03-2005 11:55 AM  13 years agoPost 5
tapeworm

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Atlanta, Ga

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If you can see your servo move you probley need some Zeal tape for your gyro. It helps absorb all the vibes from the gasser.

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05-03-2005 03:47 PM  13 years agoPost 6
mannysouza

rrNovice

southern bay area

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where do you get Zeal tape?

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05-03-2005 03:54 PM  13 years agoPost 7
ddnappyca

rrApprentice

lost in the redwoods

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rick's.Its gren and really thick!Like a gel pad materail!

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05-03-2005 03:58 PM  13 years agoPost 8
mannysouza

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southern bay area

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A hardware store or any hobby shop?

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05-03-2005 11:42 PM  13 years agoPost 9
AGRAV8

rrProfessor

Mosquito Coast......Houston Texas

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mannysouza and Randy
it is NORMAL during breakin to have that twitch, it is because the engine misses a firing cycle (cause it is rich). after a gallon or so, you can start to lean it SLIGHTLY to eliminate it altogether by the 2nd gallon. Zeal isn't going to stop it. Yes, it can reduce it, but the whole heli twitches, it is not just a vibration thing.

Randy: open your low needle a LITTLE, it will help temps go down and the vertical bumping as well.

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05-04-2005 02:58 AM  13 years agoPost 10
rcnuts

rrVeteran

Millersville, Penna

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If you can see your servo move you probley need some Zeal tape for your gyro. It helps absorb all the vibes from the gasser.
Ditto on that! I didnt have a twitch, but I was having drifting problems on my Predator. (601) Made me nuts trying to figure it out. Lots of spent time. Finally, I took some advise and got some Zel Gel from Tower hobbies. (of all places!) Well, that was that! No more drifting. The stuff is kind of expensive, but well worth it. Dont forget to post when you get it figured out!
Harris

Hooligan, at large

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05-05-2005 03:25 AM  13 years agoPost 11
mannysouza

rrNovice

southern bay area

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All fixed thanks to Dave Nellis. I just want to say thanks for helping me get it to work right. I needed to set gyro gain on my radio. Thanks again Dave. I love my gasser!

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05-05-2005 04:06 AM  13 years agoPost 12
Dave Neves

rrApprentice

Fremont, CA

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Manny,

Your certainly welcome. Thanks for choosing Century. Good luck
on your wedding plans and hope you guys have great honeymoon.

Dave Neves
Century Rep

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05-18-2005 07:53 AM  13 years agoPost 13
PullPitch

rrApprentice

Bend, OR

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Good post
I've been worried about my Predagasser twitchen. I have been adjusting the gyro gain and checking channels and wiring. Still on my first half gallon. Sounds like its time to quit freakin and start flyin'.

The twitch is minor but I was really buggin me.

I trained on .30s and went straight to the gasser for AP. Talk about different critters!

PullPitch
www.skybercam.com

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