Thanks Mark. It looks like a good product....and half the cost of anything from aircraft spruce. Too had Dow sold that brand off because it's harder to find now. Here's my theory about air gaps...I think the resin tends to outgas. As it gets closer to being cured the cloth gets more and more airtight so the gas has nowhere to go. The bad thing is it happens after you've gone to bed because if you can catch it when it's still tacky you can press it back down. Usually a hypo full of resin can take care of it. On Dec 18, 2012 8:44 PM, "Mark Langford" <[email protected]> wrote:
> Jon Kimmel wrote: > > <<I know that several people have used trymer for their wings...then the > company sold it. I found a distributor in dallas that sells it, but I > think they only sell a complete bun...2x3x4 feet...custom cut. I think a > bun is plenty to do the wings...and it's worth driving to dallas to avoid > shipping costs. The question I have is this...if you had it to do > over...how would you have your foam cut?>> > > Both Dr. Dean and I used Trymer 2000 on our planes. I got mine from an > insulation company in Nashville that cut it up with a giant (but simple) > bandsaw that cut the buns into 4' x 8' slabs. For these guys, "buns" were > 4' x 8', and about 3 feet thick, with a big head like a loaf of bread. I > bought most of a bun in one inch, 2 inch, and 6" slabs (which I used to hog > the aft deck out of). It worked fine from an installation and sanding > standpoint. It appears to be typical urethane, and looks just like what > Wicks and Spruce sell. As you say, shipping was reduced to a drive in the > pickup truck, which was 3 hours total for me. Not bad, and I watched them > cut it up and then loaded it up in the truck for the trip home. The price > was a bargain, as I recall. Something I've always wondered about is skin > bubbles. I feel like I've had more than my share of bubbles that crop up > under the skin, and are difficult to fix, despite post-curing the plane in > the hot summer sun for several weeks, and eventually years. These bubbles > happened where no two-part urethane was present, so I can only guess it was > the Trymer. Any other urethane might have caused it too, but I do know I > seemed to have more of that than most other folks, for whatever reason. > > A quick look at the wing plans should give you a good idea of how much of > each you'd need. Some of the details on how I did mine are at > http://www.n56ml.com/swings.html and http://www.n56ml.com/owings.html , > but > they weren't done by the plans by any stretch. They do work, but they are > no lighter than the usual wing. The skins are far stronger though, due to > the carbon fiber construction. > > Mark Langford > ML at N56ML.com > website at http://www.N56ML.com > -------------------------------------------------------- > > > _______________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to [email protected] > please see other KRnet info at http://www.krnet.org/info.html >
