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600 Class Nitro Helicopters 600 Class Nitro Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 05-19-2012, 10:58 AM   #21 (permalink)
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I tend to find with my fuel tank, that the grommet that seals the tank doesn't make a real good fit. Maybe yours was leaking a bit there and disturbing it made it a better seal. Could have been loosing muffler pressure through it
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Old 05-19-2012, 03:47 PM   #22 (permalink)
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I tend to find with my fuel tank, that the grommet that seals the tank doesn't make a real good fit. Maybe yours was leaking a bit there and disturbing it made it a better seal. Could have been loosing muffler pressure through it
I guess I'll order a new tank to be on safe side. I don't want to blow the engine due to some worn out or badly fitting seal in tank.
Tanks guys for advice
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Old 05-20-2012, 10:38 AM   #23 (permalink)
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I tend to find with my fuel tank, that the grommet that seals the tank doesn't make a real good fit. Maybe yours was leaking a bit there and disturbing it made it a better seal. Could have been loosing muffler pressure through it
Today I had a chance to fly a gallon in real nice sunny weather and I found that the tank has a place where fuel comes out with bubbles while under pressure
I can't see the hole, but I can see the bubbles at close to the top of the tank.
Engine never got hot today, so only issue as I install a new tank next week in to adjust the needle for pressurized tank.
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Old 05-21-2012, 02:23 PM   #24 (permalink)
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Does it look like its in a seam? I got seams on the back of mine from the bottom to the top. I think their weak spots tend to be in those seams, and could be difficult to spot. I would think you would see some residue there.
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Old 05-21-2012, 03:43 PM   #25 (permalink)
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Does it look like its in a seam? I got seams on the back of mine from the bottom to the top. I think their weak spots tend to be in those seams, and could be difficult to spot. I would think you would see some residue there.
It seems to leak someplace at rear of the tank. I'll take it apart Tuesday or Wednesday as new tank arrive. I'll let You know as I find the leak..
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Old 05-22-2012, 03:39 PM   #26 (permalink)
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Does it look like its in a seam? I got seams on the back of mine from the bottom to the top. I think their weak spots tend to be in those seams, and could be difficult to spot. I would think you would see some residue there.
New tank is in. Leak was really difficult to find, but it was at the bottom rear where tank seam meets carbon frame (rubber cushion between).
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Old 05-22-2012, 04:23 PM   #27 (permalink)
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Man, you got lucky finding that. I would have been pulling my hair out for a spell trying to find the source of that.
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Old 05-22-2012, 11:22 PM   #28 (permalink)
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Man, you got lucky finding that. I would have been pulling my hair out for a spell trying to find the source of that.
Weird is that last time I crashed was in January and I have flown 4 gallons since. It was full winter and pretty cold / cool weather until last weekend when was real nice warm and sunny T-shirt temps.
The leak revealed it self only at warm weather as I flew the bird a gallon. Possibly it leaked air in earlier, but I could not tell. Now on warm, the fuel was coming out slowly under pressure with tiny bubbles.
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Old 05-23-2012, 02:26 PM   #29 (permalink)
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The last time I had a problem I chased the issue around for what seemed like hours. Eventually I just bought new tank and line...problem solved. As cheap as tanks lines and clunks are I'd rather replace than spend that much time trying to figure it out.

You can always keep the old stuff as spare and figure it out later. The important thing to do is get it back in the air.
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