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HelicopterThunder TigerOther › Main tank clunk :~()
11-26-2006 12:46 AM  11 years agoPost 1
X-Cellant

rrApprentice

Redding Calif.

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Yesterday I had the clunk get forced to the frunt of the taink,(Main)while doing a High speed tail slide into a back flip. I noticed it later while inverted and down low and saw the header was almost empty. After landing I had Maby 3 to 4 secends of fule left in the header, ( man that was close ). After spending the last two munths trying to work out the bugs in this Rap 50, I was finley getting to tear ur up. Boy would I have been mad if I had to land it inverted.

Has any one ever had a sim. event???

Dangerous Dave

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11-26-2006 12:59 AM  11 years agoPost 2
Vendetta

rrVeteran

Miami, Florida 33173

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Happened to me just today after a crash last week. I was having probs keeping it running just above idle after rebuilding it. The clunk line had folded over in the header tank and it was shutting down... And yes I crashed it pretty hard last week ! LOL

-- Gentlemen, we can rebuild it... We have the technology....Better…stronger…faster...--

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11-26-2006 03:04 AM  11 years agoPost 3
jschenck

rrProfessor

La Vista, NE.

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yes, I've had the same problem. man, it seems to be tough to get the plumbing right. I have read about the 'kinkless' clunk line which should (at least in theory) prevent this - may try that line. I currently have Hayes black clunk line in one heli and some type of silicone on another. can't remember which one folded on me. I found out it was folded because it was leaning out pretty bad inverted.

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11-26-2006 03:14 AM  11 years agoPost 4
playfair

rrKey Veteran

Rochester, NY

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Had this happen with the black tubing in the main tank. Forced an auto that was a close call. I replaced the line as it was almost a year old and getting really soft.

When I can remember, after doing a manuver that would shove the clunk up front I try and do another which would drive it back (at least a quick piro).

Good catch on noticing the warning signs before it was "too late"!


The sky is our canvas

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11-26-2006 03:36 AM  11 years agoPost 5
Vendetta

rrVeteran

Miami, Florida 33173

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Yeah I had the silicone line and replaced it because it wasn't flexible enough and it was pulling air into my header tank so I replaced it with the Hayes and thats the one that kinked on me, and this one seems too soft ! Is it common for the hayes to kink? Reminds me of Golidlocks and the three bears with the porridge... Too Hot, too cold.... LOL

-- Gentlemen, we can rebuild it... We have the technology....Better…stronger…faster...--

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11-26-2006 05:34 AM  11 years agoPost 6
951_Powerstroke

rrVeteran

Corona, Ca

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I am still trying to get the damn hayes cut to the right length aswell....

It ends up stuck in the front of the main tank! I always cut it a tad short to allow for expansion, yet still can't get it right. I never had a problem until I started flying inverted, and it was vital that I got it right. I cut it about a 1/4" from the back of the tank, otherwise it gets stuck against the back of the tank, and never moves at all!

The search continues for the perfect length clunk line.......

Jay



Of coarse I know how to fly this thing, but if you see me running try to keep up!!

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11-27-2006 02:15 AM  11 years agoPost 7
X-Cellant

rrApprentice

Redding Calif.

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Playfair, that sounds like a good idea. Now I need to try to remember to do one more thing!!! Age is creeping up on me, turned 49 this munth. I think I will start an age pole on the mane link.

Dangerous Dave

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11-27-2006 12:45 PM  11 years agoPost 8
helifundi

rrNovice

Lick Run, PA

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Everybody recommends trashing the TT thin-wall silicone tubing, simply because it deteriorates. I followed the bandwagon, and replaced it with Hayes. Then my problems began: flameouts; power losses, stalls, etc. I cut it to all lengths: a fraction of an inch too long and it wouldn't follow the fuel to the front of the tank; too short and it would sometimes move to the front of the tank but wouldn't come back! I tried other types of tubing etc., then went back to the thinwall silicone, and put on the next size larger clunk to make sure it really flops around the inside of the tank in all positions. It works perfectly every flight. I simply replace it every 50 tanks or so, and made a wooden wedge to use to spread the rear of the frame when the two rear screws are removed from the landing gear. Now I can flip the heli over on my workbench, pull the tank, replace the clunk line in less than 5 minutes. TT designed the fuel system for thin-wall silicone tubing, not thick-wall.

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HelicopterThunder TigerOther › Main tank clunk :~()
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