DRAGONFLY CLUNK OR EQUIVALENT ?
03-07-2004, 11:07 AM
#1
DRAGONFLY CLUNK OR EQUIVALENT ?
Does anyone know where you can buy or find the Cox Dragonfly fuel tank clunk weight. I'm building a few film canister tanks and can't find them anywhere. All the DU-BRO and Sullivan clunks are way to big. I'm no machinest so I can't make my own. I was thinking of filing down a larger clunk. Would this work? Also does anyone have any specific MFG recomendations on the fuel line or will most any small size silicone line work. Thanks for the help.
Darren
Darren
03-07-2004, 11:29 AM
#2
Senior Member
RE: DRAGONFLY CLUNK OR EQUIVALENT ?
Darren, other than checking the parts bins at your LHS, or one of the Cox specialists that have been listed on the board, I don't know that you will find any.
In my film cannister tanks, I am using the clunk from a 2oz sullivan tank. I set up that sullivan tank with a fixed pickup for half-a pylon and had the sully clunk as an extra. It works fine in the film cannister even if it is a little bit heavy...... I use the smalled dubro line on the clunk line and the fuel feed.
In my film cannister tanks, I am using the clunk from a 2oz sullivan tank. I set up that sullivan tank with a fixed pickup for half-a pylon and had the sully clunk as an extra. It works fine in the film cannister even if it is a little bit heavy...... I use the smalled dubro line on the clunk line and the fuel feed.
03-07-2004, 11:45 AM
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RE: DRAGONFLY CLUNK OR EQUIVALENT ?
The ubiquitous Sullivan brass clunk can be cut down per attached drawing. Cut off the original barbed fitting, drill and solder in a short piece of 3/32" ID brass tubing so it will fit small fuel line. Cut it shorter and chuck it in a 3/8" drill and reshape the pointy end as shown. Been doing it for years with great results. 
03-07-2004, 08:11 PM
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RE: DRAGONFLY CLUNK OR EQUIVALENT ?
ORIGINAL: rrragmanliam
What are you using as a cutting tool on the clunk once you have it chucked in your "Poor Man's Lathe."
What are you using as a cutting tool on the clunk once you have it chucked in your "Poor Man's Lathe."
03-07-2004, 08:31 PM
#8
RE: DRAGONFLY CLUNK OR EQUIVALENT ?
I was looking at the clunk inside of one of my r/c bees and I found the fuel line material looks very much like the rubber insulation on the leads of my volt meter. I used to work in a small factory making test equipment, we had that wire by the spool, called test lead wire in the mouser electronics catalog.
Being wire insulation, the stuff should be able to stand up to fuel I'd guess.
Being wire insulation, the stuff should be able to stand up to fuel I'd guess.
