[NSRCA-discussion] 3M tank configuration

[DaveL322 at comcast.net]

On the Vivats, the vent line is about 12" total length (90% of which is alum tubing) and exits at the bottom of the fuse at the TE of the wing (tank is right behind wing tube).  No check valve.

On only 12 oz of fuel, I have done the P05 twice - I doubt any fuel is leaking out.

Dave

-------------- Original message -------------- 
From: "Ed Miller" <edbon85 at charter.net> 

> Thanks Dean. What about the check valve, is there a preferred one ?? 
> Ed M. 
> ----- Original Message ----- 
> From: "Dean Pappas" 
> To: "NSRCA Mailing List" 
> Sent: Thursday, January 19, 2006 9:53 AM 
> Subject: Re: [NSRCA-discussion] 3M tank configuration 
> 
> 
> > Hey, Ed ... 
> > Nylon is fuel-proof. 
> > I was thinking the white/semi transparent stuff they also use for car 
> > antenna tubes. 
> > It's light and can be had in decent lengths. 1/8" aluminum is light, too. 
> > Dean 
> > 
> > Dean Pappas 
> > Sr. Design Engineer 
> > Kodeos Communications 
> > 111 Corporate Blvd. 
> > South Plainfield, N.J. 07080 
> > (908) 222-7817 phone 
> > (908) 222-2392 fax 
> > d.pappas at kodeos.com 
> > 
> > 
> > -----Original Message----- 
> > From: nsrca-discussion-bounces at lists.nsrca.org 
> > [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Ed Miller 
> > Sent: Wednesday, January 18, 2006 7:08 PM 
> > To: NSRCA Mailing List 
> > Subject: Re: [NSRCA-discussion] 3M tank configuration 
> > 
> > 
> > I've re-routed my vent line to behind the tank since abandoning the 
> > bladder 
> > style tank, although not as far back as the end of the pipe tunnel. Should 
> > I 
> > still use a check valve and if so, will a YS check valve suffice ?? What 
> > color inner Nyrod is fuel proof and to what nitro percentage ?? Would love 
> > to shed a few more grams. 
> > Ed M. 
> > ----- Original Message ----- 
> > From: "Dean Pappas" 
> > To: "NSRCA Mailing List" 
> > Sent: Wednesday, January 18, 2006 3:50 PM 
> > Subject: Re: [NSRCA-discussion] 3M tank configuration 
> > 
> > 
> >> Hi Jay, 
> >> The vent should either get a cherck valve (what I do) to keep fuel from 
> >> peeing out in a maneuver, or run the vent tube all the way back to the 
> >> back end of the pipe tunnel, so that inverted or nose down the fuel would 
> >> have to flow uphill to drip out. Inner Nyrod will make that long run 
> >> lighter than a long piece of silicone. 
> >> Hope it helps, 
> >> Dean 
> >> 
> >> Dean Pappas 
> >> Sr. Design Engineer 
> >> Kodeos Communications 
> >> 111 Corporate Blvd. 
> >> South Plainfield, N.J. 07080 
> >> (908) 222-7817 phone 
> >> (908) 222-2392 fax 
> >> d.pappas at kodeos.com 
> >> 
> >> 
> >> -----Original Message----- 
> >> From: nsrca-discussion-bounces at lists.nsrca.org 
> >> [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of JShulman 
> >> Sent: Wednesday, January 18, 2006 3:41 PM 
> >> To: NSRCA 
> >> Subject: [NSRCA-discussion] 3M tank configuration 
> >> 
> >> 
> >> Well, it's been a little while since I've set this thing up. I'm guessing 
> >> that the pick-up line goes to the pump... but where does the overflow go? 
> >> Is 
> >> it like a DZ and just needs a check valve to let air in but not out? 
> >> 
> >> Regards, 
> >> Jason 
> >> www.jasonshulman.com 
> >> www.shulmanaviation.com 
> >> www.composite-arf.com 
> >> 
> >> 
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