ULF-1 Discussion Archive
Anonymous static archive of the former Mailman list
Anonymous static archive of the former Mailman list
Re: [ULF-1] Modern Adhesives vs Plan callouts
By Golly you are correct and I am wrong!!! I just checked our container and of course why would the Forest Labs create an adhesive that built a foreign aircraft, however Hughes adhesive is a acceptable adhesive but epoxies that are equal mixtures are the easiest to work with and can provide great results mixing in small amounts which we do alot of in aircraft building. Now if I could just think of the glue I used 40 years ago, seem it was aero something, oh well thanks for the correction. In a message dated [phone]:18:08 PM Eastern Standard Time, [email] writes: Sorry, I hit "send" before proofreading. FPL-16A is mixed 10:1 by VOLUME, not by WEIGHT. Chris On [phone]:14 PM, Member 18 wrote: I manufactured a set of Acro Sport Wings with FPL-16A Adhesive and found it to be an excellent adhesive, The thicker resin is brushed on one part and a thin watery part wiped on the other part to be joined then pressed together, This is NOT how to use FPL-16A. It is mixed 10 parts resin to 1 part hardener by weight, then applied to the surfaces to be joined. I believe what you describe is a technique for a resorcinol glue of some kind. BTW, FPL-16A, when mixed 10:1, is an excellent adhesive and most of today's commercially available epoxies owe a lot to its basic formulation. Chris Lonnie Prince In a message dated [phone]:57:18 PM Eastern Standard Time, [email] writes: Hi Austin, Welcome to the Build forum! We built all the airframe components on our ULF-1 NT/E (stands for new technology and electric motor powered) with System 3, T-88. We searched far and wide and decided on this epoxy. The only thing we did not like was the delta T on this glue. When you heat it up (needs to be heated up a lot!), it loosens up. Now this can come in handy when you make a mistake and have to take something apart! Saves having to rebuild a whole assembly in some cases. We also liked that T-88 was a little bit more flexible when compared to West Systems epoxy. We mixed up all our epoxy by weight using an electronic gram scale. If you use too much hardener for example, the glue will set up way too soft. Where we had to thicken the T-88 we used cotton flox which is structural. We are using West Systems epoxy on all the fiberglass parts such as the spoilers and fittings. Hope this helps! Member 72 Sent from my iPhone > On Mar 26, 2018, at 4:23 PM, Member 111 <[email]> wrote: > > Hi again everyone. > > I’ve noticed that the plans call for aerodux resorcinol urea formaldehyde glue in the construction of ribs and even the spar cap laminations. I’ve read of some other builders substituting T-88 for all adhesives in the aircraft, and wanted to get other ULF-1 builders’ take on the question. > > Also, several parts of the build manual call out “thickened” epoxy, but do not state the ratio of thickener to epoxy. The use of cotton flakes which I take to mean flox is also mentioned. Does Dieter intend to refer to what ratio system 3 or West Systems recommend? > > Austin > _______________________________________________ > ULF-1 discussion list -- [email] > > Subscribe, Unsubscribe, Preferences, List information: > http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com _______________________________________________ ULF-1 discussion list -- [email] Subscribe, Unsubscribe, Preferences, List information: http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com _______________________________________________ ULF-1 discussion list -- [email] Subscribe, Unsubscribe, Preferences, List information: http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com _______________________________________________ ULF-1 discussion list -- [email] Subscribe, Unsubscribe, Preferences, List information: http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com _______________________________________________ ULF-1 discussion list -- [email] Subscribe, Unsubscribe, Preferences, List information: http://lists.ulf-1.com/listinfo.cgi/ulf-1-ulf-1.com