Well Roy, that's a mighty fine kit ya got there. Should supply you with many years of fun flying ...so long as the fins don't come off from wrong glue choice.............
.....just kidding!!!
I just get my feathers ruffled a bit when I hear the old....''it melts in the sun, it melts in the sun"
So here's the skinny on how all this temp related ratings work with low and behold West as the test subject!
Excerpt from pdf:
"We have glued two blocks of mahogany together with WEST SYSTEM® epoxy, allowed it to cure for one week at room temperature,
and then exposed the whole assembly to 200°F for 3 hours before forcing a chisel into the glue line to fail the joint. When the joint
was examined closely, we found that the primary failure was in the wood and not the epoxy.
Experience has also shown that while heat tends to soften epoxy while it remains warm, if WEST SYSTEM epoxy is not exposed to damaging heat (exceeding 230°F for extended periods), it will return to full strength when cooled to room temperature."
By the way if you post cure your rocket with heat oven [or even in a car with windows rolled up in sun and heater going full blast, or redneck curing oven as we call it down here..lol] you increase the temp failure another 40-50 degrees. [ 45 minutes or hour]
But note the lab heat soaked these joints FOR 3 HOURS, not the 30seconds to 1-2 minutes a rocket experiences during flight.
This pdf will enlighten you a great deal on epoxy function with heat range to failure. It took me an hour to find it and I have posted this many times over the years during the many "great epoxy debates" hope it helps you in your epoxy future choices.
Good luck with your L-3 and hope ya have great flight/success!
Ps this is not my recommendation for only using West, just a defense for all the bad propaganda it gets. I too use many epoxies for various projects. It just is easier to buy West when something is needed "now" due to all the West Marine stores everywhere. For Xtreme use I swear by Hysol [proven over mach 5 flights] but very expensive and not needed for most applications. I use Aero-poxy...West...Proline ...3M...Rocketpoxy.... US Composite thin..Bob Smith 10 minute among others. I prefer to use additives to modify epoxy to use at hand....adhesive...laminating...structural.
If truth be told, there are only 3 major manufactures of epoxy. All the brands we see are formulated to spec by distributers.
Some where I did a thread about all this.
Hopefully time I spent researching all this will be worth it, if just one builder learns something from it.