KR> wing tank building material
Jeff Scott wrote: > People on the KRNet make a fuss about using only vinyl-ester, but > unless you are planning to run alcohol contaminated fuel, epoxy tanks > really aren't an issue... I've learned not to trust auto fuel of any kind if you buy it from an "off-brand" establishment, and that's often where auto fuel without ethanol comes from (around here, anyway). For a while there were no "reputable" stations (the big names, with actual quality control standards) that sold ethanol-free fuel in my area, so I had to get it in places that gave me the creeps. The last time I bought fuel for the Swift (which has an auto-fuel STC), I filled several 6 gallon cans with some stuff from the local "no-name" ethanol free gas station...and boy did that stuff stink! I should have quit when I noticed the smell, but wasn't entirely sure where the smell was coming from, until I was pouring it in the Swift the next day...very funky smelling fuel. I should have drained it right then, but I didn't think it would be a problem. Next time I came in the hangar that funky smell was overwhelming, the two main 1.25" fuel hoses that connect the wing tanks to the sump were weeping fuel, and the hoses were mushy and failing. I found the tanks empty, and after I removed the hoses later, I found what you see in the photo below...two "exploded" hoses. I don't know what chemical was in that gasoline, but it was not rubber friendly! I suspect "plug gas", which a no-man's-land volume of petrochemical brew that results from the pipeline transport system where two adjacent loads of fuel get combined into something you don't want to run in your car, much less your airplane. It's cheap though, so the no-name no-conscience fuel establishments buy it, and you're screwed! My point is...stick to reputable gas stations, especially if they turn over a lot of fuel. That's a good sign. I've run over 5000 gallons of Raceway auto-fuel through N56ML's vinylester tanks, much of which contained ethanol, and never had any problem, not even water. I have heard lots of stories about various epoxies with ethanol-tolerance "issues" though. See enclosed photo. It's a sobering thought. Fortunately I never had the chance to run the thing, so I don't have to fear carburetor or pump damage. I've since replaced the hoses, and at the moment it's full of 100LL. And the answer to the next question is "yes, I'm still working on getting it back in the air, maybe this spring..." Mark Langford ML at N56ML.com http://www.n56ml.com -- next part -- A non-text attachment was scrubbed... Name: exploded_hose.jpg Type: image/jpeg Size: 84564 bytes Desc: not available URL: <http://list.krnet.org/mailman/private/krnet_list.krnet.org/attachments/20161113/404bbccc/attachment.jpg>
KR> Project wanted
email me at no1son38 at aol.com got one for 2000 will send photos
Randy Moore
newbern tn
challenger II sold
avid mark IV sold
cessna 150 keeper flying
cessna 172 sold
Vstol aka starflight for sale 5000
KR II single seat for sale 2000
-Original Message-
From: Kevin Dean via KRnet
To: krnet
Cc: Kevin Dean
Sent: Sun, Nov 13, 2016 9:31 am
Subject: KR> Project wanted
blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
#715FFA solid !important; padding-left:1ex !important; background-color:white
!important; } I am a previous cozy mkiv builder that is looking to take over a
project.
Interested in a KR2S .
Thank you
Sent from Yahoo Mail for iPad
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KR> wing tank building material
?Don't skimp on the epoxy with the last layer of glass to prevent pinholes.?I had to cut into the lid of the tank to sand and clean and recoat, patch the top back in... I didn't know what my tank was made out of so I cut a round hole in the top of the tank large enough to stick my hand into the tank.. Sanded and cleaned the inside and brushed the inside of the tank with vynal Ester.? I installed a cap over the hole in case I need to access again in the future. Joe Nunley?CW2 US Army RetiredBaker JROTC Instructor?Baker Florida?
KR> wing tank building material
Ron If they are diehl wings skins the tanks will be v/ester. Dans wing skins are made of V/ester. I have them on me KR. Phil Sent from my iPhone > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
KR> wing tank building material
Hi Ron, I'm one of the folks in the other camp.I have the wing tanks made from vinyl-ester and never a lick of trouble. The header tank is made from safety-poxy if memory is correct. (Steve Glover may correct me) It was a purchased part from RR in 2000. I put 5 gal of sunoco ultra 93 containing ethonol (figured what could it hurt for a short duration) in late one Sunday evening while trying to get home from somewhere and missed the FBO closing by a few minutes. It mixed with several gallons of 100LL in the header tank and I burned down to about 4 gallons remaining to get home. I did notice that it did not mix well and stratified between fuels in the tank. It was in there about a week maybe less before I flew again and burned some more of it off and then filled up again. Another couple weeks came and went and the the throttle started sticking and a slight roughness. I thought it was cable adjustment so I went to check on it and found a tanish gummy coating on the interior of the carb. I took the carb off and discoverd a coating though out the intake mmanifold tubes with some actual runs like a paint run would look like inside. It took a few minutes for me to realize what was happening and I pulled the header tank and found that the lower half of the tank interior had erroded the Safety-poxy coating off and actually could see fiberglass hairs exposed. The line of errosion was very difinitive right at the level that fuel had sat for the less than week. I had to cut into the lid of the tank and sand and clean and recoat, patch the top back inn and a tremendous amount of cleaning to clean up the carb and intakes. I go to the extreme to make sure I do not ever have to put ethonol in this plane again. I have tried mogas without ethonol but my set up does not really like it. - Original Message - People on the KRNet make a fuss about using only vinyl-ester, but unless you are planning to run alcohol contaminated fuel, epoxy tanks really aren't an issue. I built my tanks with Saf-T-Poxy 20 years ago, then sloshed them with and alcohol resistant sealer. I have always run Mogas when I could, and for the last 4 years have been running mogas almost exclusively. I have never had an issue with the tanks or any degredation of the slosh compound in 20 years and well over 1100 hrs of service. -Jeff Scott Los Alamos, NM - From:?"Ronald Wright via KRnet" To:?KRnet Subject:?KR> wing tank building material Is there any way to determine whether the wing tanks in an already skinned wing were built using vinylester instead of epoxy? A KR builder has a set of wings with Diehl skins already built. Older wings apparently off of what was a flying airplane, but NO information about what was used to build the fiberglass tanks? The wings are marked: 100LL ONLY. So, maybe they weren't built using vinylester?? I don't want to chance buying the wings without knowing what I'm getting!! Thanks, Ron ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
KR> Project wanted
blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px
#715FFA solid !important; padding-left:1ex !important; background-color:white
!important; } I am a previous cozy mkiv builder that is looking to take over a
project.
Interested in a KR2S .
Thank you
Sent from Yahoo Mail for iPad
KR> Mechanical Belly Board
Best mech design I saw was probably on Bill Claps airplane. It was a VW brake lever on the left side of the cockpit. The bottom had a rotating arm over to the center. At the center was a arm to the belly board that dropped the board. Pretty simple. Rob Schmitt Sent from my iPad > On Nov 13, 2016, at 1:24 PM, bjoenunley via KRnet > wrote: > > > > Dear Ya'll, > Does anyone have a working mechanical Belly board? > I have an A65 with no alternator or battery. I installed a mechanical belly > board with a push pull cable. The cable pulls the belly board downward and > pushes it back up. It doesn't yet operate smoothly in the full range from up > to down. > Any suggestions? > Joe Nunley CW2 US Army RetiredBaker JROTC Instructor Baker Florida > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
KR> Mechanical Belly Board
Dear Ya'll, Does anyone have a working mechanical Belly board? I have an A65 with no alternator or battery. ?I installed a mechanical belly board with a push pull cable. ?The cable pulls the belly board downward and pushes it back up. ?It doesn't yet operate smoothly in the full range from up to down. ? Any suggestions?? Joe Nunley?CW2 US Army RetiredBaker JROTC Instructor?Baker Florida?
KR> wing tank building material
Archoil, has a fuel additive that received a Nobel prize that prevents gas from going bad. On Nov 13, 2016 8:40 AM, "Larry Flesner via KRnet" wrote: > > > but unless you are planning to run alcohol contaminated fuel, epoxy tanks >> really aren't an issue. >> > > > +++ > > I'm with Jeff on this one. My tanks are epoxy and I've run a considerable > amount of auto fuel when I could still find it without alcohol. The > concern with auto fuel is if it sets in the system for long periods it can > gum up the carburetor. 12+ years with epoxy tanks and still going strong. > > Larry Flesner > > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org >
KR> wing tank building material
At 08:39 AM 11/13/2016, you wrote: >> but unless you are planning to run alcohol contaminated fuel, >> epoxy tanks really aren't an issue. >+++ > My tanks are epoxy and I've run a considerable amount of auto fuel > when I could still find it without alcohol. >Larry Flesner I forgot to mention that my tanks are not coated with any compound, just straight epoxy. Don't skimp on the epoxy with the last layer of glass to prevent pinholes. I would suggest you let the tank cure and then paint the interior with a brushed coat of straight epoxy. I had to cut my left tank open to fix a leak. Larry Flesner
KR> wing tank building material
> but unless you are planning to run alcohol contaminated fuel, > epoxy tanks really aren't an issue. +++ I'm with Jeff on this one. My tanks are epoxy and I've run a considerable amount of auto fuel when I could still find it without alcohol. The concern with auto fuel is if it sets in the system for long periods it can gum up the carburetor. 12+ years with epoxy tanks and still going strong. Larry Flesner
KR> wing tank building material
People on the KRNet make a fuss about using only vinyl-ester, but unless you are planning to run alcohol contaminated fuel, epoxy tanks really aren't an issue. I built my tanks with Saf-T-Poxy 20 years ago, then sloshed them with and alcohol resistant sealer. I have always run Mogas when I could, and for the last 4 years have been running mogas almost exclusively. I have never had an issue with the tanks or any degredation of the slosh compound in 20 years and well over 1100 hrs of service. -Jeff Scott Los Alamos, NM - From:?"Ronald Wright via KRnet" To:?KRnet Subject:?KR> wing tank building material Is there any way to determine whether the wing tanks in an already skinned wing were built using vinylester instead of epoxy? A KR builder has a set of wings with Diehl skins already built. Older wings apparently off of what was a flying airplane, but NO information about what was used to build the fiberglass tanks? The wings are marked: 100LL ONLY. So, maybe they weren't built using vinylester?? I don't want to chance buying the wings without knowing what I'm getting!! Thanks, Ron
KR> wing tank building material
Is there any way to determine whether the wing tanks in an already skinned wing were built using vinylester instead of epoxy? A KR builder has a set of wings with Diehl skins already built. Older wings apparently off of what was a flying airplane, but NO information about what was used to build the fiberglass tanks? The wings are marked: 100LL ONLY. So, maybe they weren't built using vinylester?? I don't want to chance buying the wings without knowing what I'm getting!! Thanks, Ron
