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Buell Forum » THUMPer Forum » Buell Blast Thumper Knowledge Vault » Diagnosing problems: » 2 belts broke in a month « Previous Next »

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Geh3333
Posted on Friday, June 16, 2017 - 12:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How's it going ? I bought my 05 blast about a yr and a half ago. The blast only had 1300 miles on it . Even though the belt was over 10 yrs old , It lasted to over 8000 miles. It broke about a month ago and i purchased a new one. After maybe 500 miles the new belt broke. I think i know what happened to the new belt but I'd like some opinions before I install another$100.00 new belt. I was aproaching an exit off the highway . I was traveling around 90-95 mph right before I hit the exit. Instead of gearing down as i braked , I instead held the clutch in as i made my way down the gears. At the exact moment I hit first gear , i heard a pop . The bike was still travelling around 65 mph as i geared to first " with the clutch still held in" . I braked to a full stop And I was worried about the loud pop . I thought I somehow screwed up the transmission , and as i tried to takeoff the bike just sat there as the rpms climbed. After running through the gears with no success, I glanced back and noticed the belt was gone.

Now I believe that as i geared from 2nd to 1st gear, the transmission grabbed for a split second and considering the high rate I was still moving "especially for 1st gear" , the energy transferred to the belt as it tried to slow the rear wheel, and the belt snapped in that split second. The belt snapped the second I hit first gear. That's why I thought the pop was in the tranny. Honestly , luckily it was the belt , but at the same time , I just threw $100 down the drain. Does this sound like this is what may have happened ? My transmission has been a little rough lately, I've been meaning to check the oil in the tranny, but haven't got to it. I did have a slight leak around the seal at the shifter , but I was able to stop the leak pretty easy. I mean there was never really any dripping , just wetness around the shifter . I was going to check the tranny oil the night before the new belt broke but it was getting late so i never got to it.

Anyway, I'd really appreciate any replies , thank you very much , George .
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Gearheaderiko
Posted on Friday, June 16, 2017 - 12:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Nothing good can come from you being in first gear at 65 mph. It's bad for the trans, engine and apparently, the belt. It's also a really dangerous practice to be downshifting like that, not sure why you do it. But I can guarantee a short life for your Blast (or you) if you continue to do it.

Belt life can depend on how you installed the belt. I've seen on Youtube and also read some really bad ways to install a Blast belt.
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Gearheaderiko
Posted on Friday, June 16, 2017 - 01:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Short answer is that there isn't any way for the engine and trans to keep up with the bike going 65mph1st gear. Something had to give and luckily it was the belt.
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Geh3333
Posted on Friday, June 16, 2017 - 06:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm not sure u guys understood me . I never let go of the clutch when I was going down through the gears, even in first. But I felt the gears grab a little as i hit first gears which is what i think caused the issue.
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Geh3333
Posted on Friday, June 16, 2017 - 06:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If the blast tranny wasn't so rough this never would have happened, trust me I'll never do it again. Actually I may have miss understood u. Yes it isn't a good way 2 downshift, I usually never do that , ,it was one of those rare things I've caught myself doing.especially with a bike that has a tranny that can be so rough .
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Geh3333
Posted on Friday, June 16, 2017 - 06:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Trust me I know not 2 drop the bike into first at a higher then normal speed, but with the clutch held in it should never really matter , unless the trans is known to grab the gears. It's like running about 65 in a car , holding the clutch 2 the floor and putting the car in first. Nothing should happen unless you release the clutch.
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651lance
Posted on Friday, June 16, 2017 - 07:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

When we see a belt breaking in the first 500 miles after the install is do to how the belt was installed. Not following the factory service manual and not removing the rear axle it will break. We've talked to many people that was using you tube university for the installation of the belt having the belt fail.

These belts do not like being stressed, twisted, bent backwards, or forced into place. Doing any of these will cause the face of the belt to develop hair line cracks leading to a failure. With this bike being used and well abused in our rider edge class we rarely seen failures.
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Geh3333
Posted on Friday, June 16, 2017 - 09:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I didn't read the manufacturers installation guide, but I did remove the axle to install the belt.
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Gearheaderiko
Posted on Friday, June 16, 2017 - 11:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Pulling the axle should seem to be a gentle way to do it, but I've never done it that way. If I remember, it didn't seem all that easy.

The clutch drags, especially if not adjusted to perfection (which is rare). So while in theory nothing should happen, it can.
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