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Any ideas on this 2012 Spyder RT knocking sound?
- Thread starter RazorV
- Start date
BajaRon
Well-known member
But I thought it made this noise without moving the machine? If it's hitting a belt guard, it should be doing this all the time. The noise shouldn't be going away. Definitely missing something here.
A picture (or pictures) would be of immense help here. If you can. Include one of the front sprocket.
BajaRon
Well-known member
What is your belt tension? Did you have a tire or rear brake change recently? Are your tensioners tight? Usually, any loose belt hop will be on the smaller, less surface area front sprocket. I'm still thinking it's a front sprocket issue.
Snowbelt Spyder
Well-known member
Yeah, but still, pull off the left side panel and see if the front sprocket is jumping belt teeth causing the belt to flop around and hit the guard in the rear. Goes to what Ron and Peter are both saying. Will be easy to tell. The front sprocket would be turning and the belt won’t be, or won’t be at the same rate. Besides, if the belt is jumping teeth, probability is you’ll need a new belt anyway. Unless there’s some additional reason why the belt is so loose, yet not damaged.
BajaRon
Well-known member
My fear is that it's the front sprocket jumping splines. I hope I am wrong.
The only reason I've been thinking it's not that is that usually, if the front sprocket even starts jumping splines, the bike stops moving at all pdq! :yikes:
Belts that are 'loose, but still engaging teeth' do tend to at least provide some drive, and usually, only slip on acceleration! So I was trying to be hopeful for derby.... :dontknow:
Still, it's always hard diagnosing things like this over the internet/without actually seeing it in person, isn't it!? Even with video's &/or sound recordings, it's never quite the same as being there and actually looking at it/listening to it in person! :banghead:
BajaRon
Well-known member
You are exactly right. We speculate with much less than all the information. A lot like fighting fire. Except that you're usually in a much bigger hurry to get results. And I agree. A fair amount of the symptoms would be explained by a very loose belt. But jumping the rear sprocket is unlikely. If it is a loose belt (best case scenario, I'm thinking), I'd suspicion that a rear tire or brake pad replacement (or some work that involved the removal or loosening of the rear wheel assembly) occurred. If they didn't get things buttoned up properly. The axle could have shifted forward causing the belt to get loose. But that would usually give you a belt running way off center on the pulleys.
We'll have to see what the outcome is. Sometimes, everyone is wrong! :yikes:
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