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Old 09-16-2013, 11:19 AM   #1
jimmycoin OP
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new chain and sprocket??

So, I stopped by a shop today to pick up some chain oil. while there, one of the mechanics was admiring my 2012 800gs. (Keep in mind, this shop is kind of known for ripping people off but i was just buying a $8 can so i did not mind going) while looking at it, he said, "it looks like you need to replace your chain and sprocket" I thought the chain was fine and did not know the sprocket even goes bad. I oil my chain about every 400 miles unless im in some really nasty stuff, then i do it more frequent. Anyway, my question is, do you really change the sprocket every time you change the chain? I have about 8500 miles on the chain. Thanks
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Old 09-16-2013, 11:29 AM   #2
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Anyway, my question is, do you really change the sprocket every time you change the chain? I have about 8500 miles on the chain. Thanks
yep :o) bad sprockets wear the chain quicker. I think some hear just change the rear sprocket with every chain change and the front every second time. I do it everytime; keeps my mind in peace.
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Old 09-16-2013, 11:35 AM   #3
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yep :o) bad sprockets wear the chain quicker. I think some hear just change the rear sprocket with every chain change and the front every second time. I do it everytime; keeps my mind in peace.
Thanks, this would be my first chain replacement so I didnt know if they were just trying to get me to buy one. Is it common to have to replace these things after 8500 miles?
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Old 09-16-2013, 11:38 AM   #4
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oh and at your mileage you should be far from chain wear, except if you're riding it through mud and sand since mile one.
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Old 09-16-2013, 12:11 PM   #5
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Thanks, this would be my first chain replacement so I didnt know if they were just trying to get me to buy one. Is it common to have to replace these things after 8500 miles?
Yes, you should replace both together. I'm surprised that they need doing that early, though? I realise that everyone rides differently, in different conditions, and this will affect things, but I first had mine changed at 17,000 miles!
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Old 09-16-2013, 12:15 PM   #6
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Yes, you should replace both together. I'm surprised that they need doing that early, though? I realise that everyone rides differently, in different conditions, and this will affect things, but I first had mine changed at 17,000 miles!
Mine lasted for 30k kms. If it doesn't make a strange used noise, not having 'tight spots' you should be still good to go. Maybe that is the part where as you said your dealer tried to rip you of, not the one buying all three parts at the same time
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Old 09-16-2013, 12:22 PM   #7
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thanks for the replies. I will probably head up to the dealership this weekend just as a excuse to ride(its about a hour away in Raleigh, NC) and have them look at it. The guy there is cool and will tell me if it needs it or not. To be honest, this is my first adv bike, so for all i know, that chain could be worn slam out or look brand new. I guess i will get some education this weekend.
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Old 09-16-2013, 12:31 PM   #8
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thanks for the replies. I will probably head up to the dealership this weekend just as a excuse to ride(its about a hour away in Raleigh, NC) and have them look at it. The guy there is cool and will tell me if it needs it or not. To be honest, this is my first adv bike, so for all i know, that chain could be worn slam out or look brand new. I guess i will get some education this weekend.
Go to your rear wheel and pull the chain from the sprocket away. Then look at the teeth of it. Normally if you can see too much teeth either your chain is loose, or it is about time to change it.
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Old 09-16-2013, 02:25 PM   #9
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Go to your rear wheel and pull the chain from the sprocket away. Then look at the teeth of it. Normally if you can see too much teeth either your chain is loose, or it is about time to change it.
After doing what you said, I dont think i need to replace any of it. Damn crooked business's lol
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Old 09-16-2013, 02:28 PM   #10
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clean it

Give the chain a good clean and lube. Once you have loosened the links you might find that it is actually ok and has not stretched unevenly.
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Old 09-17-2013, 07:00 AM   #11
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When it looks like this, its time....



Quote:
Originally Posted by jimmycoin View Post
So, I stopped by a shop today to pick up some chain oil. while there, one of the mechanics was admiring my 2012 800gs. (Keep in mind, this shop is kind of known for ripping people off but i was just buying a $8 can so i did not mind going) while looking at it, he said, "it looks like you need to replace your chain and sprocket" I thought the chain was fine and did not know the sprocket even goes bad. I oil my chain about every 400 miles unless im in some really nasty stuff, then i do it more frequent. Anyway, my question is, do you really change the sprocket every time you change the chain? I have about 8500 miles on the chain. Thanks
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Old 09-17-2013, 07:19 AM   #12
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When it looks like this, its time....

The local BMW shop here has a rear sprocket that just has rounded bumps no "teeth" whatever ... it came off a Ducati ... which the guy brought in because it was making a funny noise when he accelerated ...

The BMW owner's manual says:

Pull the chain back at the rearmost point of the (rear) sprocket.
The tips of the sprocket teeth must remain inside the chain links.
If the chain can be pulled back far enough to expose the tips of
the sprocket teeth:

Consult a specialist workshop, preferably an authorised BMW
Motorrad dealer.



Honestly seeing the whole tooth seems like a LOT of permitted wear ...

one of my previous bikes said to replace it if more than 1/2 of tooth was exposed ... but I'll bet if you go do this "quick check" you'll find you can hardly see daylight between chain and sprocket....

A couple of the chain mfg. sell or give away (I'm not sure which) a cute little gauge that measures chain elongation/wear. I've asked Timken and Tsubaki for one ... if I'm successful I'll post the result back...
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Old 09-18-2013, 07:13 PM   #13
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I would be suprise you would need a chain at only 8500mile let alone sprockets.

With wear the chain stretches ...if you have had to adjust/tighen your chain acouple of times ...you might be needing a new chain....keep track of markers on you rear axle mounting point.
The front sproket always wears g faster than the rear.....that will show wear first. good photo in the tread shows a badly worn sprocket.

ps I got 30 k miles on my first chain and did NOT have to change sprockets, FYIW
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Old 09-18-2013, 08:03 PM   #14
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Well..if you've been "oiling" it every 400 miles..you could potentially have destroyed it yourself..since everything within a mile is stuck to your chain and grinding on your sprockets..

All lube does on a modern o-ring chain, is help abrasives stick to it and accelerate the wear...

A mild water dispersal spray is all you need if you want to treat for surface rust..if the bike sits..

All the movement happens behind the o-rings...no lube you apply topically can get in there to affect anything.
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Old 09-18-2013, 08:08 PM   #15
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I replaced my chain at around 30,000 km. Replaced it with a DID chain and that chain currently has 40,000 km on it and no signs of wear of needing replacement. I changed my sprockets also just to keep them from wearing faster than the new chain.

That mechanic just confirmed his employer's reputation. I wouldn't even buy a bottle of oil from guys like that. As long as they are in business, they are poaching from the dealers who are doing a good job, struggling to survive and deserve to stay in business.
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