KR> Canopy and Spraylat
Hello everyone, I just received my new canopy from Todd's today. It's been quite an eerie nice today. First when I went to the trucking company to pick it up, I was told the box was "crushed and punctured"! I dismantled the box on the dock before accepting the shipment, but much to my relief, the canopy was undamaged. And this was after traveling by truck from Florida to Alaska during the last three weeks of storms out east. So now the Spraylat. After spending almost $600 on shipping, I started looking for Spraylat to protect this piece of art. It is no where to be found, but I found a new type of painters tape, 3M brand Deluxe Trim tape for Delicate Surfaces. It's advertised to peel off easily even after 60 days. So I laid 3 rolls of 2" tape on the inside and out. It looked great. I decided to take a break at that time because I was getting a headache, then my wife came home. She asked what the smell was, and of course I didn't know what she was asking about until I left the living room, where I was working on the canopy. Come to find out, the tape was off gassing some chemicals very toxic to both of us which had, by this time, given me a migraine. I later removed the tape and covered the canopy with plain white contact paper. I'm much happier now and the headache is gradually going away. Now to figure out how to install this canopy. Rodger Nicolls Anchorage, Alaska
KR> New wing skin idea - Fuel tanks
That's why I am going for welded ally tanks. I don't think you will get anything stronger and will give the highest capacity for a given outer dimension. Regards Dene Collett Avlec Projects cc Builders of award winning aircraft tel:27419560048 cell: 27845805003 Port Elizabeth South Africa -Original Message- From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Ronald Wright Sent: 17 February, 2014 9:45 PM To: KRnet Subject: Re: KR> New wing skin idea - Fuel tanks Don't you have a concern about cold weather and the vinyl?cracking?? I would think a thin wall aluminum tube would be a much better choice.. ions
KR> Fuel Tanks.
I have already passed the point of no return on my fuel system but for all of you guys that are still contemplating 5 inch aluminum tubes in the outer wing. How about using a larger tube such as a 12 inch and compress it to fit the airfoil design. I would think that a plywood box could be built in the shape you need and start bending until it fits. Cap the ends and walla, A fuel cell with more capacity. Mike Sylvester kr2s builder Birmingham,AL. Cell no.205-966-3854
KR> New wing skin idea - Fuel tanks
"I tested the PVC water pipes and found that the fuel would weep through the sealed pipe until it was all gone in about three months. I am also testing Vinyl fence posts. I brought the test items to the Gatherings at MVN several times" The proof is in the testing but it really begs the question of why the fuel would seep through PVC pipe but not through PVC fence posts. I would like to pursue the use of the vinyl posts but would like to know why there is a difference. I am just an aerospace engineer...not a chemical engineer, so if anyone knows please pass that on.
KR> New wing skin idea - Fuel tanks
I tested the PVC water pipes and found that the fuel would weep through the sealed pipe until it was all gone in about three months. I am also testing Vinyl fence posts. I brought the test items to the Gatherings at MVN several times. Larry always had me keep the gasoline outside the terminal building on the picnic table. The sealed Vinyl post has held automotive gasoline with 10 percent Ethanol for seven years and not lost a drop. I check the loss rate (zero) by weighing the Vinyl post test items on a digital scale. Apparently the glue used for the Vinyl stands up to gasoline and Ethanol quite well. I would have used the Vinyl posts in my KR-2 when I replaced the Vinyl Ester tanks, but would have required too much rework on the existing wing structure. Were I building from scratch, I would definitely use the Vinyl fence posts; they are available at Lowe's in 3, 4, 5 and 6 inch sizes. Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA > -- >>>How fuel resistant is PVC, ABS? Drain pipe ABS is really strong and >>fairly light. Peter > + > > Bill Clapp used PVC pipe for fuel tanks and found the fuel would > slowly "weep" through the > pipe. http://www.krnet.org/mvn2004/040929277.jpg Someone else was > doing a test using the square vinyl post covers and indicate early > success. I don't recall who that was. > > I would suggest that there have been enough different things tried on > KR's to satisfy most builders curiosity. If you're building simply > to fly, go with proven ideas and save time. If you're building to > fulfill your desire to experiment, go for it.. > > Larry Flesner >--
KR> New wing skin idea - Fuel tanks
Don't you have a concern about cold weather and the vinyl?cracking?? I would think a thin wall aluminum tube would be a much better choice.. From: smwood To: krnet at list.krnet.org Sent: Monday, February 17, 2014 1:08 PM Subject: Re: KR> New wing skin idea - Fuel tanks I tested the PVC water pipes and found that the fuel would weep through the sealed pipe until it was all gone in about three months. I am also testing Vinyl fence posts.? I brought the test items to the Gatherings at MVN several times.? Larry always had me keep the gasoline outside the terminal building on the picnic table.? The sealed Vinyl post has held automotive gasoline with 10 percent Ethanol for seven years and not lost a drop.? I check the loss rate (zero) by weighing the Vinyl post test items on a digital scale.? Apparently the glue used for the Vinyl stands up to gasoline and Ethanol quite well.? I would have used the Vinyl posts in my KR-2 when I replaced the Vinyl Ester tanks, but would have required too much rework on the existing wing structure.? Were I building from scratch, I would definitely use the Vinyl fence posts; they are available at Lowe's in 3, 4, 5 and 6 inch sizes. Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA > -- >>> How fuel resistant is PVC, ABS? Drain pipe ABS is really strong and >> fairly light. Peter > + > > Bill Clapp used PVC pipe for fuel tanks and found the fuel would > slowly "weep" through the > pipe.? http://www.krnet.org/mvn2004/040929277.jpg Someone else was > doing a test using the square vinyl post covers and indicate early > success.? I don't recall who that was. > > I would suggest that there have been enough different things tried on > KR's to satisfy most builders curiosity.? If you're building simply > to fly, go with proven ideas and save time.? If you're building to > fulfill your desire to experiment, go for it.. > > Larry Flesner > -- ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
