Do belts glaze over as you get more miles on them? I finally have my clutching for my 15 Viper LTX MPI turbo spot on. I was having issues with hitting the rev limiter and a very hot secondary before. The first test ride I did after the changes was about 60 miles and the clutches were warm, but not hot by any means. This past weekend I was in Munising and put on almost 600 miles. I pulled the side cover off a few times and noticed that the outer sheave of the primary was just warm but the inner sheave, belt, and secondary were hot enough that I could only hold my finger on them for about 5 seconds. I had made no clutching changes. The belt is an 8JP length Gates Carbon.
When I say the clutching is spot on, it revs right to 8800-8850 on the throttle stab and will climb to 9100 at 102mph. Never hits the rev limiter at all any more. This is perfect in my mind other than the heat. I am running Supertips weights loaded to 76.8 grams, 14.8mm TP primary rollers, Dalton Red primary spring, Dalton 48/40 helix, and a TP Orange secondary spring wrapped at 30°. This setup is working well and the lower wrap of 40° or 30° was recommended by Thunder Products. I see no indications of the belt slipping (such as black marks) but it does have 1400 miles on it now. Do you think a new belt would help lower the belt & clutch temps or should I try wrapping the spring to 40°? If I wrap it tighter, I may hit the rev limiter again.