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HomeAircraftHelicopterThunder TigerOther › R30 V1 Occasional Odd shake/oscillation
05-08-2005 07:22 AM  13 years agoPost 1
ShempHoward

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San Francisco, Ca - too many beggars + bad drivers

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Lately I have been getting these infrequent odd wobble/oscillations going thru the whole Heli while hovering mostly. They will seem to go away if I change engine speed and only last for a few seconds. They seem to accompanied by a slightly jerky tail wag as well.

These problems just appeared out of the blue for no reason I can trace and I am wondering if my old original rubber head dampers might be worn and cause these problems?

Any other ideas?

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05-08-2005 07:34 AM  13 years agoPost 2
DOKEY

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Northamptonshire UK

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Aswell as the dampers, how is the engine tuning ?

Ryan.

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05-08-2005 10:51 AM  13 years agoPost 3
Al Magaloff

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I would go with lubing the dampeners , also.

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05-08-2005 05:03 PM  13 years agoPost 4
rtrickyjr

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Drumore, PA (SW of Quarryville)

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Headspeed?
I noticed on my rappy, if the headspeed is to low, I'll get a kind of wobble. It goes away if I raise the headspeed to where it belongs. Just a thought.


-Rick-

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05-08-2005 06:12 PM  13 years agoPost 5
vortechZ230

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U.S.A.

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Same here...... If the head speed or engine tuning is just not right.... the heli flies like crap!!

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05-08-2005 10:13 PM  13 years agoPost 6
ShempHoward

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Well, the engine (OS 32SX-H) tuning I don't think would be an issue since its running real smooth with a head speed of 1710-1720 (woodies) at last MA Tach check. This problem just started about 10-12 flights ago right out of the blue.

What type/brand of lube should I use and is there some quick and easy method to do so? I realize it probably cannot be petroleum based since that might cause damper deterioration. Do the dampers ever wear out due to lack of lube? If I need to replace them should I get the stock TT part or go aftermarket?

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05-08-2005 10:29 PM  13 years agoPost 7
C-DOG

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SunShineState

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Shemp
No real easy way to lube the dampeners.A really good lube I found is the lube you can get from the auto parts house, Used for lubing spark-plug wire boots.

Good Luck Corey I PAY-PAL

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05-09-2005 01:07 AM  13 years agoPost 8
ShempHoward

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I just disassembled the head and removed the stock black rubber dampers. They were both dry as a bone. I found a small container of "Lite Lube Grease" that came with my LMH 117 kit. It is labeled as a "premium synthetic lubricant with teflon". Its a white-ish
translucent looking grease. Do you think I can I use this?

Can someone explain how the dampers actually work and why keeping them lubed makes them function better? They were a rather snug fit and I am at a loss to understand how they work and why they need lube?

Thanks

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05-09-2005 01:48 AM  13 years agoPost 9
Al Magaloff

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That lube should work ok. Pull the dampeners from the head block. Apply lube to the outside, and inside. Then some on the spindle, and send it home. The dampeners need lube, so the spindle can quickly find center ( end to end, up and down, side to side, and everywhere in between). When you make a cyclic input, the spindle moves around in the dampeners. Dry dampeners are sticky.

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05-09-2005 01:52 AM  13 years agoPost 10
ShempHoward

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Thanks Al - I will do as you suggest.
I won't fly it again until next Saturday, weather permitting, so the test results will have to wait til them.

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06-10-2005 09:30 AM  13 years agoPost 11
ShempHoward

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Well, I lubed up the dampers and spindle but the problem is still there although not as frequent and not as serious. Could my orginal stock dampers be too worn out (they looked ok with no cracks or obvious defects) thereby causing this problem to a lesser degree now that I used some lube on them? Are better aftermarket dampers available for the R30 V1?

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06-10-2005 09:40 AM  13 years agoPost 12
Al Magaloff

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You can easily use the V2 blue or red dampeners, by sleeving the V1's 5mm spindle up to the V2's 6mm size. PM me for the material needed to make the sleeves.

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06-12-2005 05:23 AM  13 years agoPost 13
ShempHoward

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San Francisco, Ca - too many beggars + bad drivers

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Al - Apparently you feelmystock back rubber dampers are shot. Which V2 dampers should I replace them with - red or blue? Wht is the difference between the 2 colors and are these TT parts or aftermarket parts?

I will PM you abut the sleeve material.

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06-12-2005 05:34 AM  13 years agoPost 14
chuckhager

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Clovis, CA

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You might want to check for a bent spindle. The easiest way to check for a bent spindle, if it's still in the helicopter, is to remove one blade from the grip, put your allen wrench in the end of the spindle bolt and rotate it. As you rotate the bolt, watch the tip of the attached blade and see if it move up and down. If it does, then your spindle is bent.

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06-12-2005 07:06 AM  13 years agoPost 15
Al Magaloff

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Are better aftermarket dampers available for the R30 V1?
I don't know if the dampeners would cause the wobble or not, just answering your query about aftermarket dampeners. I don't believe aftermarket are available. The red and blues are TT V2 parts. The red being the stiffest, the blue, stiffer than the V1 black, but not as stiff as the red.

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