Thanks for your inquiries into the breakdown temperature of SA2000. The
bond has been breaking down at around 150degrees, plus or minus a degree
or two. This is great news if you are using it on graphite shafts.
Also, we have had several customers keep the clubs in their trunks, even
in Arizona, and haven't experienced drastic results.
We have too many children dying inside locked cars, in this state, because people don't realize how hot they get. Several years ago I left a thermometer in the pilot's seat of a B-47 parked on the ramp in Wichita, Ks. When I retrieved it a few minutes later it read 160 degrees. I leave my clubs and cart, which has 12" bicycle tires, in the back of my pick-up camper. Last summer it got so hot, in the back of the pickup, it blew all three tubes in the tires. This is high desert and seldom goes to 100 deg.
Bob Baxter Bisbee, Az.