Bill Clapp has developed an alum.version of his original PVC tanks. I believe he still has the PVC tanks in his plane. Most people have not noticed any smell from fuel unless the tank is full and the vent is overflowing.
I have the same PVC tanks in my wings. Alum tanks will affect embedded antennas in the wings. Glenda McElwee CFI www.AwesomeTrvl.com KI4RDQ - General Class N51GL - in progress Corvair powered KR2 [email protected] --- On Mon, 4/26/10, Ronald Wright <[email protected]> wrote: From: Ronald Wright <[email protected]> Subject: Re: KR> Re: tubular wing tanks To: "KRnet" <[email protected]> List-Post: [email protected] Date: Monday, April 26, 2010, 11:02 AM I want to use METAL irrigation tubing. The plastic bothers me because it gets brittle in cold weather, plus the info you provided below on weeping. Sloshing is NOT an issue in a tubular tank. The Yankees uses long tubular tanks and they do not have any baffles installed. Thanks, Ron --- On Sat, 4/24/10, smwood <[email protected]> wrote: > From: smwood <[email protected]> > Subject: KR> Re: tubular wing tanks > To: [email protected] > Date: Saturday, April 24, 2010, 6:00 PM > Bill Clapp http://www.krnet.org/krs/wc/ used 4-inch PVC pipe, 2 > each joined > together at both ends running from the WAF to the end of > the wing and same > for the other side. Bill had removable wing tips for > inspection. He had no > fuel gauge senders in the PVC pipes, but a 13-gallon header > tank at the > instrument panel with a tube sight gauge on the > panel. Electric pumps on > each side took fuel from the PVC pipes and dumped into the > header tank. > Then gravity feed to the engine. Fuel would slowly > weep through the PVC; > you could always smell gasoline fumes in the outer wing. > One problem with using pipe for a fuel tank is sloshing > during maneuvers and > turbulence. Bill put fuel cell foam in the pipes. > I did an experiment with PVC pipe. I filled a section > of 1-1/2 inch PVC > with gasoline with both ends glued tight. It took > about 6 months for all > the gasoline to evaporate. > I did the same experiment with a section of 4-inch vinyl > fence post with > both ends glued on caps and about half full of fuel. > I weigh the vinyl > fence post tank once in a while. All the gasoline is > still in the vinyl > fence post after 4 years. I cannot say what condition the > fuel is in since > the tank is sealed, but it still sloshes like fuel. I will > bring the vinyl > fence post tank to the Gathering for your examination. > > Sid Wood > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > [email protected] > ---------------------------------------------------------- > Does anyone remember who used irrigation tubing for wing > tanks in their KR? > Anyone know the material that the irrigation tubing is or > the size? > > Thanks, > > Ron > > > > > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to [email protected] > please see other KRnet info at http://www.krnet.org/info.html > _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to [email protected] please see other KRnet info at http://www.krnet.org/info.html
