Sprocket and chain need replacing.. second opinons.

[NJD]

I feel like a numpty for having to ask for second opinions in regards to if the sprocket looks worn but I'd rather ask on here first than a shop/mechanic with pound signs in their eyes. Yes it would be cheaper to attempt to DIY but I'm a potato with a spanner, I'll empty my pockets if it means someone else doing the job I don't know how to. Anyway..

The sprocket / chain has covered 3417 miles and that's rounding up so it's actually done less than that. Has been on the bike for just over a year (if that makes any difference). Pulling the chain of the rear sprocket doesn't even reveal half a tooth (see bottom picture). Main concern is with the condition of the rear sprocket. I was always told that if the rear looks like it needs replacing then the front almost certainty does because it works x2 as hard (or rotates x2 as much as the rear). And yes I'm aware to replace front, rear and chain as a kit.

Last time I visited the mechanic in regards to another job he told me I'd be better of putting the money towards a new chain and sprocket (at the time he was referring to when the time arrives).

My options are;

(a) Phone up today and book in for early next week meaning that I'd only cover 50 miles max on this sprocket/chain set.

(b) Leave it and wait until the next service in aprox. 1000 miles (rounding up) and have it done all in one go.

Opinions?

https://s17.postimg.org/ebqlziq6n/image.jpg

https://s11.postimg.org/msvjg8ixf/image.jpg

https://s28.postimg.org/rdele3egd/image.jpg

https://s14.postimg.org/pwjp5fk1d/image.jpg

[pdg]

3417 is not a rounded number.

That rear sprocket looks barely run-in, never mind worn out.
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Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.

[NJD]

Inb4 "chain looks dry". I blame the cameras flash and British weather, was only done four days ago.. need a direct debit to silkolene / WD40 at this rate.

[DrSnoosnoo]

Maybe it's starting to look hooked. The chain though looks fine to me, not perfect but I wouldn't be too bothered.

When I changed the chain on my bike, I could lift the chain quite far away from the sprocket, much much further than you show.

I'd see it through the winter and see how it looks when there's sun in the sky at 4.30 pm
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[Rogerborg]

It's fine, leave it.
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[smallfrowne]

Looks barely touched to me too

Google yer sen some nice pictures of a "worn rear sprocket" to get an idea.
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[Matt B]

Hard to tell from photos but it doesn't look that bad to me, sprocket teeth do not appear to be hooked at all. Wouldn't bother to change it personally.

You can measure the chain to gauge wear if you want. Depends on the pitch but for a 525 pitch chain the limit for 20 links is 323mm (according to my Kawasaki service manual). That's measured between the 1st and 21st pins in a line.
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[MCN]

Clean, Loob (with chain lube) Since you are properly concerned to do it right then chain lube as opposed to the various concoctions suggested on forums. We use chains to drive equipment in the oil field and we never use old oil to oil anything we 'care' about,
Adjust according to OEM spec. (to the tightest slack) and enjoy.

That Splocket looks very usable. Judging by your pics.

There seem to be enough lube on it (or is that paraffin?)

3000 miles is waaaaaay too early to need to consider a chain/sprocket job.

I fcuked the chain on a bike when the last tyre person knocked the scotoiler nib off the sprocket (my excuse as I wasn't maintaining the things as I should have. ) But I still got 6k miles out of it and only replaced the chain 'only' due to a couple of dry links. The bike did make a strange 'whung' 'whung' noise at m/way speed too. Probably the tight-slack-tight-slack of the chain.

too for posting sharp photos which show the bit/s you're banging on about.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[Islander]

Have a look at the front sprocket as well. You may find that's hooked (or not) - just examining the rear isn't really enough to tell whether the whole lot needs changing or not.

[NJD]

[Taught2BCauti...]

You might aswell get a new chain and sprocket set anyway - if you are in no rush you can look for the best price.

Better than having to pay top-dollar when you are desperate

When it arrives, you will at least have a shiny new sprocket to compare it with side-by-side.
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[NJD]

[GaryJM]

How far back are the adjusters? Are there any tight spots?
If no then it's fine.
As others have said clean and lube if the questions I've asked are ok.
If really worried just change it for piece of mind but do both chain and sprockets at the same time.
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[Kickstart]

Hi

Looks OK in most of the pics (possibly a slightly bigger gap from wear between the teeth), but looks slightly suspect in one piccy near the top of the teeth. That said I would likely leave it on there for quite a while.

While front sprockets do have a harder time, they also tend to be made from far harder steel.

All the best

Katy
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