sprocket teeth sheared off, pics
10-19-2005, 01:36 PM
#1
Registered User
Thread Starter
Join Date: May 2005
Location: Memphis, TN
Age: 42
Posts: 96
sprocket teeth sheared off, pics
I ride a 2001 yamaha fz1. When it had about 10k miles on the bike and stock chain, I changed sprockets (-1/+3), including a larger aluminum rear. I ran these sprockets about 7k+ miles. I clutch up every wheelie and I know it strains the bike in many ways, but I've never heard of sprockets taking this kind of beating. The 47t rear aluminum sunstar's teeth have been sheared completely off. Lately, when clutching it up, the chain would jump teeth, but I didn't know that's what the sound was (idiot!). Now, I'm swapping to -1/+8 and when I get the +3 off of there I noticed the teeth.
Why did this happen and how? I'm sure it's a combination of things such as old chain put on new sprockets, chain too loose for a bit, clutching up way too many wheelies, etc. But, have you seen this happen before?
Why did this happen and how? I'm sure it's a combination of things such as old chain put on new sprockets, chain too loose for a bit, clutching up way too many wheelies, etc. But, have you seen this happen before?
10-19-2005, 01:42 PM
#2
Registered User
Join Date: Jun 2005
Location: chicago/urbana
Age: 41
Posts: 294
Re: sprocket teeth sheared off, pics
Smaller aluminum sprockets don't seem to hold up wheel, my vortex on my 600rr lasted 800 miles before it started taking teeth off. It also depends on the quality of the sprocket, with aluminum sprockets you have to watch your chain tension more closely as well and keep it adjusted properly. I have a +12 aluminum on my f3 and a +20 on my 929 and haven't has problems with either, bigger sprockets seem to be fine in aluminum just not the smaller ones.
10-19-2005, 01:45 PM
#3
Registered User
Thread Starter
Join Date: May 2005
Location: Memphis, TN
Age: 42
Posts: 96
Re: sprocket teeth sheared off, pics
is my 52 in your eyes a "smaller one" like the 47 was? I'm not hardcore stunter so I don't know how big is "big". I'm hoping that you'll tell me the 52 won't give me problems.
Nobody on the FZ1 forum knew a whole lot about this problem.
Nobody on the FZ1 forum knew a whole lot about this problem.
10-19-2005, 02:19 PM
#6
Registered User
Join Date: Jun 2004
Location: Toronto
Age: 42
Posts: 3,289
Re: sprocket teeth sheared off, pics
Only time I ever see that happen is from lack of chain adjustment. Aluminum sprockets wear faster and require more adjustment of the chain slack. Too tight and it'll wear out too loose and it'll do the same.
10-19-2005, 03:08 PM
#7
Retired
Join Date: Mar 2003
Location: .
Posts: 37,967
Re: sprocket teeth sheared off, pics
Originally Posted by JohnnyP
Only time I ever see that happen is from lack of chain adjustment. Aluminum sprockets wear faster and require more adjustment of the chain slack. Too tight and it'll wear out too loose and it'll do the same.
10-19-2005, 03:18 PM
#9
Registered User
Join Date: Aug 2004
Location: .......
Age: 41
Posts: 3,733
Re: sprocket teeth sheared off, pics
I've run it too tight and sheer ALL of the teeth off cause I never paid attention to them getting thin. Also, you SHOULD replace your chain when you replace sprockets, I know its expensive, and I rarely follow that!!! Phil with Moto-Heaven told me about having it too tight for wheelies, said I should set it around 2" of play if I'm constantly riding wheelies.....factory says 1-1/4" for my 600RR
Thread
Thread Starter
Forum
Replies
Last Post
