FentonFlyer

My Feedback: (11)

Hi all,

I'm setting up my first gasser, A Texas Hurricane ARF w/ a Brison 2.4, and was wondering what is the best clunk set-up. I tried a piece of tygon and the standard clunk that comes in a Dubro 20 oz tank, but it just isn't flexible enough. Should I go with a heavy clunk and Tygon or neoprene and the standard clunk? One person I talked to suggested a felt pick-up from a weed wacker or similar piece of small eqiupment. Has any one tried that? Are gassers very sensitive to going lean if the clunk isn't always submerged?

Thanks
FF

greyhound man

My Feedback: (5)

I use fuel line I got from Airwild I believe it is called Aerotrend fuel tubing it is more flexible than tygon and works well. but I have also had tygon in several planes with no trouble. but either way you should replace it yearly they tend to get hard and brittle after a while. and yes use a large clunk

JoeAirPort

My Feedback: (41)

This is the black flexible stuff. It's the best clunk line out there. Just make sure to divide the clunk line in two by putting a short piece of brass tubing in the middle. That's because this stuff is so flexible it could end up stuck at the front of the tank if you use a really heavy clunk (most people use the large one on these tank setups). If you put the extra piece of brass tubing in the middle it will be fine.

http://www.ronlund.com/Merchant2/mer...ct_Code=HAY249

rcbill

My Feedback: (1)

I am in the middle of changing my 3 gassers over to the Hayes neoprene just like Joe Airport is talking about. Bill

JoeAirPort

My Feedback: (41)

Bill, I have to confess that I need to convert my BME Edge 30% to that system too. At first I had the Hayes stuff without the piece of brass tubing in the middle and the clunk would go to the front of the tank when I turned the tank upside down (every time). So I used the Tygon for the first 4 flights. Now I need to go back and put the black stuff back in (and do it right this time).

rcbill

My Feedback: (1)

It's always more fun to do something at least 2 or 3 times.
I haven't had the chance to run the new neoprene yet. Still a little too cold or windy or..or..or Bill

Rcpilot

My Feedback: (78)

[sm=lol.gif]

I've been using DuBro neoprene with a standard weight clunk that comes with the DuBro tanks. No problems so far.

I did learn the tygon lesson the hard way. I never new that it would get stiff over time. Mine became unflexible and then it slid off the brass tube. DEADSTICK about 2 minutes into a flight.

Whats dat funny sound in the tank? Somfin rattlin' round in there. DOH!! Howd dat happen? [:-]

Been using neoprene ever since. I don't know how long it lasts. Never had a plane last more than a couple seasons before I stuffed it.

dant-RCU

My Feedback: (3)

I am using a 20oz Dubro tank in my Giant Stick with Tygon line and the Walbro fiber filter clunk. Works like a charm for me so I don't think that the clunk being partially out of fuel at times is a problem. I can pretty much run the tank out and haven't noticed any problems using the fiber filter clunk. It is also fairly heavy and the Tygon line fits very tight. I soldered fuel barbs to the brass tank tubes.

Like I said, works fine for me. I think the clunks cost about $3.25 at one of the local Lawn and Garden shops (NOT a Lowes or Home Depot type).

my .02 on this one.

Dan

Flypaper 2

I use snowmobile primer line and weedwacker clunk with the felt filters. I tried Tygon but found it goes hard after about a year. The primer line doesn't.