Re: KRnet> KR2 Plans For Sale

I have seen this fuselage. It is VERY well constructed, and I think it might be the correct length for a KR2S. Appeared to be spruce aircraft plywood. It will save some builder many hours of construction time and and several hundred dollars in build cost. Griff Pickett -Original Message-

KRnet> Has tank

Could you make an aluminum gas tank by brazing the seams and using JB weld to seal the seams Sent from my iPhone -- KRnet mailing list KRnet@list.krnet.org https://list.krnet.org/mailman/listinfo/krnet

KRnet> Wing stubs

Hi KR builders, I’ve foamed in my wing stubs and wondering if I need to cover the foam with anything before fiberglass, ie layer of micro balloons? Or just fiberglass? Thanks, Brett N718KR -- KRnet mailing list KRnet@list.krnet.org https://list.krnet.org/mailman/listinfo/krnet

Re: KRnet> Has tank

You could if you are willing to have your engine quit in flight or die in a fire. Rich From: KRnet on behalf of GARRY COWLES via KRnet Sent: Sunday, October 30, 2022 6:31:28 PM To: KRnet Cc: GARRY COWLES Subject: KRnet> Has tank Could you make an alumin

KRnet> JB Weld

I've used JB to seal a couple tiny pinhole leaks in my aluminum tank.  This was years ago and I've had no further problems with leaks.  For that matter, J.B. has worked for everything I've ever used it on.  It's been great.  MikeKSEE -- KRnet mailing list KRnet@list.krnet.org https://list.krne

Re: KRnet> Has tank

I have an aluminum tank that was welded and leaked. A tiny pinhole. Built by someone else. At the time I did not have experience with or equipment for aluminum welding, so I drained it, filled it with water, drained it again and went about aluminum brazing to fix the pinhole. Similar to your que

Re: KRnet> Wing stubs

I recommend a microslurry (micro balloons mixed with epoxy with the consistency of mayonase/ or fluff (if you know what that is 😉 ) before laying up fiberglass (done in the same layup). If you are not able to - put peel ply (dacron) down and wet out. M. From: K

Re: KRnet> Has tank

weld - and if any leaks use pro-seal. Anything else you are compromising the seam - and dealing with "glues" not specifically designed for being in fuel for extended amounts of time. M. From: KRnet on behalf of GARRY COWLES via KRnet Sent: Sunday, October 30,

KRnet> Buying a kr2

Good evening, Has anyone on here looked at buying the KR2 from Justin Hornung? I’ve seen pictures and the construction looks pretty solid. I’ve yet to see it in person. His father was building the plane and has since passed. Thank you, Paul Hansard Hansard Electric 678-956-0468 hansardelect...

Re: KRnet> Wing stubs

Just to be sure there’s no ambiguity, do NOT put a layer of peel ply down and then glass over it. Peel ply will prevent your fiberglass from adhering to the foam surface, and it will delaminate. Cotton flox mixed with epoxy will fill the surface, but it’s heavy. So will glass microballoons. I

Re: KRnet> Has tank

The bladder or liner business sounds like unnecessary trouble.  My 17 gallon removable aluminum tank sits with flanges welded to each side of it.  The flanges sit upon the fuselage side rails.  I had two or three little pinhole areas along one of the seams on the bottom.  JB has held up after th

Re: KRnet> Wing stubs

Yes Dave - thanks for clarifying that - I have seen people make that mistake!!! I get colored dacron so I do not make the mistake. Oh, and there is a gratifying feeling and sound when removing the peel ply (you peel it off after the epoxy is 100% cured). Somewhere between popping bubble wrap,

Re: KRnet> JB Weld

JB Weld is simply an epoxy product with loaded with some fillers to give it a more viscous wet consistency and a relatively hard finish. I wouldn't use it anywhere you wouldn't consider using any other epoxy resins. If you prep an aluminum (or composite) surface for bonding, you'll find JB Weld, as

Re: KRnet> JB Weld

JB Weld: IT IS NOT ETHANOL PROOF. The ethanol melts it. I had the issue when I used it to seal some "pin hole leaks" in an aluminum tank. Worked for a while and then leaked. I called the company the makes it and the nice lady I talked to said it was good to use with everything EXCEPT ETHANOL..

Re: KRnet> Re: JB Weld

It may not have been alcohol that damage the JB Weld. Take a look at the web site I listed in my previous email. My tanks were never exposed to alcohol, but were destroyed by the other additives (primarily injector cleaner) now found in most auto gas. I tested the alcohol free premium fuel from

Re: KRnet> JB Weld

So, I earlier mentioned polysulfide sealant is FAA approved for fuel contact in my Lake Amphibian. After making that post I read about automotive fuel tank sealants, there are several. Certainly they are not so rigorously tested as FAA approved products, but it seems the manufacturer intends tho