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[Moto7575]

Hi there ! The belt on my zero fxs broke while riding - fortunately I was not on the highway. The belt is not so old - one year, 12.000 kms. Should do twice that. Anybody experienced a similar problem ? I am using the bike's torque, but mostly in the city and never off road...

[AutoE]

need to watch the alignment and tension. release the throttle on any "jumps". is it a clean cut or a more jagged tear?

[NEW2elec]

+1 to AutoE

My 13 belt has 37k miles and still fine.

I'm also beginning to wonder if the axle nut on a lot of these bikes is torqued to the 75 lb ft like it should be.  If it isn't tight the wheel will tend to pull back away from the bike increasing tension.

[Crilly]

When adjusting the belt, donot ever over tighten.  If it is to tight and you have to loosen it, you screwed up.

[Moto7575]

Thanks ! Attached is a picture of the belt - it does not look bad. It was on a lightly bumpy but clean road - difficult to release the torque because you do not see them.coming.

[Curt]

Here's my unmaintained FX belt at 16000 km. It's kept indoors, but is subject to frequent hard accel/decel and jumping of speed humps.

[Curt]

Are you still applying chemicals (Klostermann Spray) to your belt?

[Say10 15FX 16FXS]

Might be time for the chain kit!

[geijuutsuka]

Curious if you've ever set up the suspension?  The rebound for my 2019 SR was WAY WAY WAY too slow.  This means that the rear wheel doesn't stay in contact with the ground when it hits even minor bumps.  It's my belief that this is the main cause (after tension/alignment of course) of early life belt snaps.  Read somewhere that 15% of riders get their suspension tailored to them.  Made a huge difference in how my bike rides.  If you adjust nothing else, adjust your rebound front/rear. 

[valnar]

Curious if you've ever set up the suspension?  The rebound for my 2019 SR was WAY WAY WAY too slow.  This means that the rear wheel doesn't stay in contact with the ground when it hits even minor bumps.  It's my belief that this is the main cause (after tension/alignment of course) of early life belt snaps.  Read somewhere that 15% of riders get their suspension tailored to them.  Made a huge difference in how my bike rides.  If you adjust nothing else, adjust your rebound front/rear.

Methinks I should do this to my FXS.  I've never done it because it "feels" fine, but then, I did have a premature belt break at 400 miles.  Are there good instructions for doing so?

[geijuutsuka]

Motojitsu has a good explanation of the how's and why's simply called "how to adjust your rebound dampening"  (he also covers compression and preload).  But basically you adjust the rebound in the rear so if you bounce your weight on the tail and stand back up (or push with your hand while holding the bike upright) it bounces back without coming up past it's normal resting point.  My SR came from the factory very soft.  I'd bounce my weight on it, and the tail would kind of "sink" upwards.  You adjust the rebound to the point where it's actually bouncing past the resting point then resting back down....then dial it back so it bounces back as fast as possible, without going past it's resting point.  The front, you're adjusting it so when you hold the front brake and push on the forks (then immediately stop pushing), it bounces back, then past the resting point MAYBE half an inch, then rests.  If you do these two adjustments, the tires will track bumps a lot better and your rear has a much lower chance of torquing the belt.

[Moto7575]

No, I did it only a couple of times.

Are you still applying chemicals (Klostermann Spray) to your belt?

[Moto7575]

Wow. Mine is much thicker... It is kept indoor too, and subject to the same treatment as yours (except for the speed bumps)

Here's my unmaintained FX belt at 16000 km. It's kept indoors, but is subject to frequent hard accel/decel and jumping of speed humps.