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HelicopterThunder TigerOther › R30/50 Flap Dampers too Loose
03-16-2003 03:59 AM  14 years agoPost 1
AirWolfRC

rrProfessor

42½ N, 83½ W

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I had the R50V2 out for it's first flight and found a strange wobble whenever I did an abrupt roll. I had no idea what might be the problem.

After inspection later this evening, I found that the I.D. of the flap damper PV0356 was too loose and allowing the spindle to rock in the head. I checked the 70d PV0381 and found it to also be just as loose.

The stock dampers for the V1 were not nearly that loose.

If anyone else has seen this problem, let me know.

I reinstalled the stock flap dampers from the V1, without modification, in the V2 head with the V2 spindle (tight fit) and will see tomorrow how it flyes.

Wolfgang

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03-16-2003 11:40 AM  14 years agoPost 2
Al Magaloff

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12,199 Posts- Enough​Time Wasted. See Ya!

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Wolfgang, I'm about to do the same with my V1's. I purchased some 5mm i.d. x 6mm o.d. stainless tubing from McMasterCarr. I'm going to run a 6mm reamer through BK0097 so I can sleeve the spindle up to 6mm with the tubing. This should stiffen the V1 dampeners up quite a bit. Maybe too much. Let us know how your experiment goes.

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03-16-2003 03:46 PM  14 years agoPost 3
Airman98

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Southern Illinois

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I fly my Raptor50V2 very hard with the stock dampers and so far they are working fine. I bought some of the red dampers and I will be trying them today to see how they fly.
Tim

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03-16-2003 03:53 PM  14 years agoPost 4
AirWolfRC

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42½ N, 83½ W

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Tim, you may wnat to check your V2.

With the blades folded, grag the blade grips and rock them up and down. On mine, I find considerable movement with little force.

The I.D. of the rubber dampers is so great that the dampers just about fall off the spindle shaft. This is not good.

Well, I'm off to the field to see how my fix works out.

Wolfgang

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03-16-2003 04:05 PM  14 years agoPost 5
G.Man

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Bristol

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Hmmm my dampers are a very tight fit on the spindle...

maybe some duffers are out there?

Blue dampers that is...

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03-16-2003 05:36 PM  14 years agoPost 6
AirWolfRC

rrProfessor

42½ N, 83½ W

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Galifrey, Think about it.

The I.D. of the dampers on the R50V2 are exactly 6.0mm. The spindle is exactly 6.0mm. With any force at all on the dampers, they will compress in the direction of the force and leave a gap on the other side. Loose fit is what I'm saying.

The V1 dampers had an I.D. that was less than 5.0mm for it's 5.0mm spindle.

Wolfgang

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03-16-2003 08:01 PM  14 years agoPost 7
G.Man

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Bristol

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Well, havent got that problem with mine, the spindle was a total beyatch to get thru the rubbers as they werent 6mm id...

more like 5.5mm

Mines been looped rolled inverted hovered etc etc and no wobble (except when the headspeed is too low ie sub 1400)

I will keep an eye as you suggest but not a problem so far...

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03-17-2003 12:52 AM  14 years agoPost 8
AirWolfRC

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42½ N, 83½ W

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The dampers I have, both black and blue, measure at 6.0mm I.D. If they had been 5.5mm, I would have been happy.

The wobble seems to be gone with the V1 dampers after about 4 flights today.

Wolfgang

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HelicopterThunder TigerOther › R30/50 Flap Dampers too Loose
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