How fast do your sprockets wear out? - Sportbikes.net
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post #1 of 20 (permalink) Old 02-02-2009, 04:21 PM Thread Starter
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How fast do your sprockets wear out?

Hello everyone and I hope you are all having a good week.

I just changed the rear sprocket on my '93 900rr about six months ago.

It had to be custom made (I think it's a steel sprocket) by a company because I have a custom rear rim that has a unique bolt pattern.

Anyway, I also changed the front sprocket and the chain.


It's a quick acceleration kit, down one tooth in the front sprocket, but STOCK sized in the rear sprocket.

I ride about 120 miles a week, mostly cruising on the highway....no stunting, racing, nothing, just the rare super quick acceleration on freeway onramps now and then.

Today I looked at my rear sprocket and noticed it was just starting...oh so very slightly...to become hooked again! It's very vague, but I can tell that the hooking is just beginning.

Is this normal for you folks? How often do you change sprockets?
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post #2 of 20 (permalink) Old 02-02-2009, 04:32 PM
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If you had it custom made, our numbers will not be fair to apply to your bike.

Reasons:

1) Whatever steel was used for your sprocket...was almost certainly not the same as aftermarket or OEM sprockets. There are THOUSANDS of quality steels out there with HUGELY different properties in terms of wear on a sprocket.

2) Since you had the rear sprocket custom made....it begs the question: What else is custom on your bike? Any mods to the drivetrain, power output, or final ratio (tire size) can impact this.

That being said....I get about 10K miles out of an aluminum sprocket kit...but I am not very hard on my sprockets (no stunting, very few wheelies, no drag racing).

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post #3 of 20 (permalink) Old 02-02-2009, 04:33 PM
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I'm just throwing out a wild guess but maybe 15k miles???? I'm no mechanic but maybe poor alignment could cause it to wear faster??????? I don't think you should be noticing anything yet.

PS you can stop calling it the mainland now that you're not in hawaii anymore....
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post #4 of 20 (permalink) Old 02-02-2009, 04:36 PM
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never
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post #5 of 20 (permalink) Old 02-02-2009, 04:40 PM
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My OEM sprockets and chain came off at 15K miles. The front was noticeably but not severely hooked. My rear was just barely visible as no longer being symmetric. The chain was fine. That's a good mix of commute, sport street, and trackdays on a 180HP bike with a 530 chain and virtually no chain maintenance (a half dozen wipes clean with WD-40 when the rear wheel was off for some reason). Take it for what it's worth.

KeS

+1 for god knows what you're running in an off-brand aftermarket sprocket. Also, did you go down in chain *width* as well, or no? That affects wear too.
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post #6 of 20 (permalink) Old 02-02-2009, 04:41 PM Thread Starter
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Quote:
Originally Posted by Parabellum View Post
If you had it custom made, our numbers will not be fair to apply to your bike.

Reasons:

1) Whatever steel was used for your sprocket...was almost certainly not the same as aftermarket or OEM sprockets. There are THOUSANDS of quality steels out there with HUGELY different properties in terms of wear on a sprocket.

2) Since you had the rear sprocket custom made....it begs the question: What else is custom on your bike? Any mods to the drivetrain, power output, or final ratio (tire size) can impact this.

That being said....I get about 10K miles out of an aluminum sprocket kit...but I am not very hard on my sprockets (no stunting, very few wheelies, no drag racing).
Yeah, I was thinking that maybe the type of steel that was used to make my rear sprocket isn't that strong or something.

My friend actually ordered it for me, and I can't remember which company did it.

The bike has a lot of mods, jet kit (unknown what stage), full exhaust, marvic rims, custom rear shock, braided brake lines.
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post #7 of 20 (permalink) Old 02-02-2009, 04:44 PM Thread Starter
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Quote:
Originally Posted by FizzerMeTimbers View Post
I'm just throwing out a wild guess but maybe 15k miles???? I'm no mechanic but maybe poor alignment could cause it to wear faster??????? I don't think you should be noticing anything yet.

PS you can stop calling it the mainland now that you're not in hawaii anymore....
Well, after I had the sprockets/chain installed, I took the bike to a Honda dealership to adjust the chain tension, which they did.

I hope they also checked the allignment when they tightened the chain.
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post #8 of 20 (permalink) Old 02-02-2009, 04:44 PM Thread Starter
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Quote:
Originally Posted by citified View Post
never
So your bike has 0 miles?
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post #9 of 20 (permalink) Old 02-02-2009, 04:46 PM Thread Starter
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Quote:
Originally Posted by kevin_stevens View Post
My OEM sprockets and chain came off at 15K miles. The front was noticeably but not severely hooked. My rear was just barely visible as no longer being symmetric. The chain was fine. That's a good mix of commute, sport street, and trackdays on a 180HP bike with a 530 chain and virtually no chain maintenance (a half dozen wipes clean with WD-40 when the rear wheel was off for some reason). Take it for what it's worth.

KeS

+1 for god knows what you're running in an off-brand aftermarket sprocket. Also, did you go down in chain *width* as well, or no? That affects wear too.

I don't know about chain width, when I ordered my quick acceleration kit I made sure it was for a 1993 900rr and that's all I did.

I had to ditch the rear sprocket that came with the kit, since it didn't fit the bolt pattern of my rear rim (custom marvic rim) and that's when my friend ordered a custom made steel rear sprocket.

Oh well.... everything else about this bike has been a headache lately, so why should this surprise me?
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post #10 of 20 (permalink) Old 02-02-2009, 07:11 PM
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Quote:
Originally Posted by MT Wallet View Post
So your bike has 0 miles?
belt drive
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post #11 of 20 (permalink) Old 02-02-2009, 07:20 PM Thread Starter
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Quote:
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belt drive
Nice!

Your belt drive beats my chain drive and lousy sprocket
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post #12 of 20 (permalink) Old 02-02-2009, 07:32 PM
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i get about 1,500 miles on teflon coated vortex,lol
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post #13 of 20 (permalink) Old 02-02-2009, 07:34 PM
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Quote:
Originally Posted by MT Wallet View Post
Nice!

Your belt drive beats my chain drive and lousy sprocket
Belts are super awesome for street, but it would probably suck for a dedicated track bike.
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post #14 of 20 (permalink) Old 02-02-2009, 07:36 PM Thread Starter
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Quote:
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i get about 1,500 miles on teflon coated vortex,lol

Are u serious?
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post #15 of 20 (permalink) Old 02-02-2009, 07:37 PM Thread Starter
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Quote:
Originally Posted by citified View Post
Belts are super awesome for street, but it would probably suck for a dedicated track bike.
Both have their good and bad I guess.

My sprocket, mostly bad.

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