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Model Forum / Radio Controlled / Air Models / October 20091/8 Inch Tubing Caps
So, the Nobler is getting its fuel system installed. I'm going whole hog and putting in a uniflow system (double clunk, no less). This means that the fill vent tube needs to be capped after filling and before flight, so the uniflow vent will do its job properly. I've seen this done with itty bitty caps that fit over the 1/8" brass fuel tubing. These caps are pretty much the same that you see covering other tubes to keep them from taking a chunk out of an innocent bystander or to hold things in, but they are small small small. Does anyone know where to get such a critter? Or have suggestions for some other convenient way to plug a tube after a tank fill? Thanks...  Signaturewww.wescottdesign.com "Tim Wescott" <tim@seemywebsite.com> wrote > Or have suggestions for > some other convenient way to plug a tube after a tank fill? Fold the tube over on itself, and put a small alligator clip on it. SignatureJim in NC >"Tim Wescott" <tim@seemywebsite.com> wrote >> Or have suggestions for >> some other convenient way to plug a tube after a tank fill? >Fold the tube over on itself, and put a small alligator clip on it. Tim was talking brass tubes, I think, not silicon. :-O But if we're allowed to imagine a silicon extension for the brass tube, then a fuel dot would work and be a little neater than the alligator clip. http://www.hooked-on-rc-airplanes.com/fuel-dot.html Marty SignatureBig-8 newsgroups: humanities.*, misc.*, news.*, rec.*, sci.*, soc.*, talk.* See http://www.big-8.org for info on how to add or remove newsgroups. >>> Or have suggestions for >>> some other convenient way to plug a tube after a tank fill? > >>Fold the tube over on itself, and put a small alligator clip on it. > > Tim was talking brass tubes, I think, not silicon. :-O You are correct. The brass tubing means that after folding the alligator clip is unnecessary -- but then you land with an empty tank, and your life gets complicated. > But if we're allowed to imagine a silicon extension for the brass tube, > then a fuel dot would work and be a little neater than the alligator > clip. Eh. I didn't know about those. I'll have to take a look at what the LHS has to offer (Or make one from billet 6061! Now _that's_ cost-effective!) Signaturewww.wescottdesign.com >Eh. I didn't know about those. I'll have to take a look at what the LHS >has to offer (Or make one from billet 6061! Now _that's_ cost-effective!) If you're willing to live with a silicon extension, you could seal it with a machine screw. Not sure what size, but when you find it you could beef it up at one end with a washer (soldered or brazed)--just to make it a little easier to find when you drop it. Marty SignatureBig-8 newsgroups: humanities.*, misc.*, news.*, rec.*, sci.*, soc.*, talk.* See http://www.big-8.org for info on how to add or remove newsgroups. Those little guys are in common use with automotive carburators and vacuum systems. Try a auto parts store (the real kind, not a PEP Boys or the like). > So, the Nobler is getting its fuel system installed. I'm going whole hog > and putting in a uniflow system (double clunk, no less). This means that [quoted text clipped - 10 lines] > > Thanks... Try looking in a junk yard for a rubber vacuum line cap. Most c ars have several vacuum lines plugged off with rubber stoppers. Failing that, a piece of fuel line plugged with silicone caulk/glue ought to work well. > Those little guys are in common use with automotive carburators and vacuum > systems. Try a auto parts store (the real kind, not a PEP Boys or the [quoted text clipped - 14 lines] >> >> Thanks... >Failing that, a piece of fuel line plugged with silicone caulk/glue ought to >work well. DOH! I think that's the best (cheapest, quickest, dirtiest) solution yet. Way to go, Randy! Marty SignatureBig-8 newsgroups: humanities.*, misc.*, news.*, rec.*, sci.*, soc.*, talk.* See http://www.big-8.org for info on how to add or remove newsgroups. (top posting obsessively fixed) >> Those little guys are in common use with automotive carburators and >> vacuum systems. Try a auto parts store (the real kind, not a PEP Boys [quoted text clipped - 24 lines] > Failing that, a piece of fuel line plugged with silicone caulk/glue > ought to work well. I think I'll go with the fuel dot -- control line models are more fun to fly if they look good from the control handle; a fuel dot means that there won't be _anything_ out of place in the air. But if I get lazy, or if the LHS doesn't have fuel dots, maybe I'll change my mind... Signaturewww.wescottdesign.com |
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