Shag remember how happy we all were with 8jp till about 500mi and WFO? Something changed in those belts with miles. Put new on and everything was just fine for another 500. Went through 3 and then moved on myself.
Your saying on your viper? How many miles where you getting on the 8dn
Yes on the Viper. Which is nowhere near the power you guys have but for me the 8JP would just start melting or something around 500mi. Never blew one but Terrible black smears and dust. Change belt and good for another 500. 8DN on there now has at least 2000mi. Don't even think about it or clutching anymore. Just ride it. I often am over 95 and on occasion over 100mph. So not in your realm. But not for lack of trying!
Set your belt deflection over the sheaves and my rollers are ALL off the helix. When I set it at a 1/16 or more (under sheaves)they all touch and can't move any of them. This 6/1 and stock belt. STM straight 38. Observations with my sec and OSP ADJUSTER.
Sounds like it's out of useable travel if the rollers aren't touching. If that's the case 8dn length would be worse. Obviously the rollers would take a hit on engagement. Do you think it's causing issues?
8DN would be worse IMO.(I blew 2 8DN length belts) GATES CARBON. The one thing that keeps coming into my mind when I think about these blown belts and the way I blew two of them IS > mine both blew when I was hard on it let up and then got back on it SOME. Its like the belt is hanging up and or getting JERKED hard (slammed into rollers?) When you get back on gas.. Guy said it was rolling hills( my first blown belt I hammered it over a small hill pulled skis down it , let off gas for a second then got back on gas and BANG. Last one was hard on gas on grade let off for a bit then next burst BANG! These are not WFO hammers either.. I really think the softness of the Gates Carbon has something to do with my two blown belts also.. Sticky belt getting hung up? I was running both belts over the top of my secondary sheaves at least a 1/16.. Both were longer belts 8dn length so guy has to run them up higher. But I have a 8JP with 650 miles on now that's been good and looks great.. Really like the straight 38 helix also.. I would really think a 35/38/35/39 or even 35/37 would be my ideal, BUT I will run the straight 38 the rest of season
Cripes this sounds just like the Cats back in 12 and 13. Remember belt whip? I know my RR was first mod I did. Bikeman Torsional. The on off brake and on the gas clunk from secondary not keeping up with primary and rollers off the Helix was unrideable to me and I thought how the heck do these Cat guys ride these things? Everyone I asked said that clunk was normal and person just had to ease into throttle after hard on brake. My response is Bull. That's not how I ride. Its no wonder the drivetrain and belts blow with a hit like I experienced. It was way worse with clean scuffed clutches and a new belt. 8DN being hard should help. But length hinders if your findings are legit. Any hard belts with 8JP length? Or could go Bikeman route and way stiff springs in Primary and secondary but would be clutching from scratch.
Okay someone knows kind of what I feel and think about the clutching before my helix change.. I have not lost my marbles! Thanks Canondale for saying belt whip that's what I was trying to describe. And IMO the laziness of the stock helix and spring and or even roller issues, and spring bind combine to = belt whip = BANG goes belts
