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HomeAircraftHelicopterGasser Model RC HelicoptersOther › Predator Gasser Fuel Tank Vent.
11-01-2004 09:48 AM  13 years agoPost 1
Tuber

rrNovice

Gabriola Island, Canada

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What is every one doing about it?

What I mean is when you do back wards flips or rolls or anything that moves the heli from normal flight will let fuel out the vent...... yes? And that can't be a good thing.

Randy

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11-01-2004 12:29 PM  13 years agoPost 2
AGRAV8

rrProfessor

Mosquito Coast......Houston Texas

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Nope
no problem. Make sure to have at least two loops in the line. Also, I use very small tubing on the vent line.

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11-01-2004 12:36 PM  13 years agoPost 3
Tuber

rrNovice

Gabriola Island, Canada

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Ok thanks,

I just have to get the nerve up for the first loop then I will be away.

Randy

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11-01-2004 02:44 PM  13 years agoPost 4
rcadd1ct

rrElite Veteran

Richardson, Texas

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Remember that the carb is trying to suck the fuel in while you are flying. So there is a natural negative preasure at the vent.

It will come out, but is you have line wrapped like James said it will want to be sucked back in.

-RCA .......... Making Cuisinarts Fly!!!!!!!

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11-01-2004 04:46 PM  13 years agoPost 5
Heli-Driver

rrElite Veteran

Arlington, TX

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On my Predator gasser I routed my atmosphere (vent) line from the top of the tank over to the right side. There I went around (looped) the rear spacer between the fuel tank side frame and the servo frame above it.

Then moved forward and looped around the front spacer between the right gas tank frame and servo frame. From there I went down to the right front of the gas tank and looped it again around the front tank spacer then tucked it under the gas tank and zip tied it to the right gear strut.

That sucker won't leak unless you're working on the bench and it's inverted for a long time but when it's running there is a vacuum on it so it really isn't an issue.



Raymond

Predator Gasser SE/231 X 2
Century Helicopters

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11-01-2004 04:51 PM  13 years agoPost 6
Flying Tivo

rrKey Veteran

Monterrey,NL,Mexico

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Whats the big worry
I could spill half my tank and still fly for 15 min.
I do route my line with one loop to the bottom, so when im inverted, the line is above the fuel level.

Felipe

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11-02-2004 11:42 AM  13 years agoPost 7
Tuber

rrNovice

Gabriola Island, Canada

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Thanks for the ideas.

Randy

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