Jon
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« on: January 12, 2012, 06:52:55 AM » |
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Hi
Can anyone recommend a Fuel vent rollover valve that will work at 90 degrees.
I'm putting together a streamliner bike & the valve I've bought doesn't close off reliably until it is about 135 degrees, I don't want end up with the bike on it's side leaking fuel.
Thanks
Jon
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Stainless1
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Robert W. P. "Stainless" Steele Wichita, Kansas
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« Reply #1 on: January 12, 2012, 10:13:31 AM » |
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Jon, you should have a tube on your rollover, put an S in it on the way to the bottom of the tank, make the s the same width as the tank. That way your rollover will not leak gas regardless of position.
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Stainless
MSA Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
Builder of Bike 278 1000cc APS-G, Kids Red Hat Record 208.959 (old PS rules)
Other kids A-G record 179.172 Josh O record 182.266
Co-owner of the Amo Steele Streamliner, #1411... still sorting
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SPARKY
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« Reply #2 on: January 12, 2012, 12:34:13 PM » |
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Same thing with a vent tube that runs diagionaly from one corner to the opposite corner then past the bottom of the tank, only 1 90 degree bend so that you do not create a "P " trap -- make it fairly large, as large as your fuel line.
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« Last Edit: January 12, 2012, 02:42:14 PM by SPARKY »
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Jon
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« Reply #3 on: January 12, 2012, 01:41:58 PM » |
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Thanks for your help guys, I appreciate it.
Jon
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SPARKY
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« Reply #4 on: January 12, 2012, 02:40:27 PM » |
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PS I would put it on the rear corner for salt racing as your G loads will be much greater with the chute than it will with accelleration
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" I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The great point is to bring them the real facts." A. Lincoln
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oz
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Geordie Power.
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« Reply #5 on: January 12, 2012, 03:12:00 PM » |
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Hi jon I got a one way vent from Earls performance plumbing it wasnt to dear but works perfect at what seems any angle
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Newcastle born and bred a City built on Coal and Steel and a people built of stronger stuff
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Jon
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« Reply #6 on: January 12, 2012, 03:16:55 PM » |
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Thanks Oz, does gassing out of fuel pressurize your tank mitch or does it bleed off pressure?
Thanks
Jon
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oz
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Geordie Power.
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« Reply #7 on: January 12, 2012, 03:29:38 PM » |
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It has a little ball bearing in it and as the fuel gets used lets a little air in cant push anything through the other way fuel air nothing goes back through I have tried and its a pretty little anodised thing with a NPT or BSP thread so dead easy to fit.
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Newcastle born and bred a City built on Coal and Steel and a people built of stronger stuff
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maj
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« Reply #8 on: January 13, 2012, 04:37:46 PM » |
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I fitted something like that to my manufactured fuel tank on my bike this year and was not real happy with the potential shake or bump spillage or the action of the ball so put a light spring behind the ball
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jdincau
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« Reply #9 on: January 13, 2012, 05:52:31 PM » |
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The simplest is a hose that comes out of the top of the tank, down one side, accross the bottom, up the other side, accross the top and is tie wrapped to the fitting coming out of the tank. This isn't elegant but it works, requires nothing inside the tank, has no ball or spring to stick and vents in both directions without restriction. It also will spark no discussion in tech.
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SPARKY
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« Reply #10 on: January 13, 2012, 05:59:03 PM » |
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Jim that can P trap, and block the venting --and has caused engs to lean and blow up... from one corner across diaogonally and down the corner,to below the bottom of the tank will work and will not P trap
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" I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The great point is to bring them the real facts." A. Lincoln
agendadocumentary.com
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jdincau
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« Reply #11 on: January 13, 2012, 07:47:46 PM » |
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P trap? Not familiar with the term.
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"We can never select the one result we want to the exclusion of all others"
David Pye
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Seldom Seen Slim
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« Reply #12 on: January 13, 2012, 08:13:13 PM » |
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Maybe not the term, but the item. They're the bit of plumbing that keeps nasty smells from escaping the drains in your toilet and sinks. Shaped kinda like a sideways letter "P"  |
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Jon E. Wennerberg
a/k/a Seldom Seen Slim
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(that's way up north)
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saltwheels262
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LORING 7/11
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« Reply #13 on: January 13, 2012, 08:22:26 PM » |
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every sink and toilet has a p trap.
some have s traps.
they hold a "block" of water at the lowest part of the plumbing ,
right below that fixture.
they prevent gasses, air, stink or what not from passing through
the next straight section of pipe, upward.
a liquid lock as opposed to a vapor lock. (?)
a liquid lock will cause a vapor lock.
correct?
franey
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bub '07 - 140.293 a/pg 120" crate street mill
max 10/07 - a/pf d license
bub '08 - 153.697 a/pf pump gas
bub '09 - 156.377 aps/pf ran out of gear
lta '10 - 158.208 2 much gear 2x
bub '10 - 158.100 sweetooth gear
lta 7/11 -163.389 7/17/11; 3 run avg.-162.450
probably it for that mill, as is.
ohio - 185.076 w/#684
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saltwheels262
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« Reply #14 on: January 13, 2012, 08:25:13 PM » |
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it took 10 minutes to post that, but conirms slims post.
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bub '07 - 140.293 a/pg 120" crate street mill
max 10/07 - a/pf d license
bub '08 - 153.697 a/pf pump gas
bub '09 - 156.377 aps/pf ran out of gear
lta '10 - 158.208 2 much gear 2x
bub '10 - 158.100 sweetooth gear
lta 7/11 -163.389 7/17/11; 3 run avg.-162.450
probably it for that mill, as is.
ohio - 185.076 w/#684
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