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Old 07-14-2009, 06:18 PM   #1
Old School RR
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Noise question

Im not sure but i think my chain is making a poping sound. I am sure its about time for a new chain. But i am hearing a poping sound under a load....it is more noticable at a lower speed. I really have a few things in mind it could possibly be but am hoping it is just the chain. My second thought is wheel bearings, but they were supposedly new when i bought the bike almost a year and a half ago, orrrrrr and i hope its not something in the transmission.

I have looked and dont see anything that is an obvious problem with the chain and or either of the sprockets like broken or over worn pieces.

Anyone had this problem or any ideas that may help.

I am about to just buy new bearings and see if it goes away.
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Old 07-14-2009, 06:21 PM   #2
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Old 07-14-2009, 06:26 PM   #3
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its not rusted or busted up, but i would say its probably time for a new one.

I just wanted some input. On my other bike i just changed it after i bought it....so i really dont know what or if any sound to look for on a bad one. I mean i am pretty mechanically inclined its just i havent ever seen or had one fail on me so i dont know what to be waiting for.

any advice helps yanno.
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Old 07-14-2009, 06:29 PM   #4
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Old 07-14-2009, 06:31 PM   #5
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second....I have always heard if you change the chain to replace the sprockets as well. Again being that there is no serious wear to them i.e., sharp, broken, worn down teeth. Would it be a big no no if i just replaced the chain.

I am thinking of selling it and want to make sure it is in good working order. I just dont wanna spend a bunch on it only to end up selling it.
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Old 07-14-2009, 06:32 PM   #6
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does this happen while at a steady speed, or accerating or decerating???
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Old 07-14-2009, 06:32 PM   #7
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Quote:
Originally Posted by MudBug View Post
mine sounded like . Poped when I would take off. Adjusted it and within 50 miles it was poping again. New chain and sprockets and everything was good.

If the bearings are new or do not have many miles I would not think bearing.
yeah i tried adjusting it and it just made the same sound...think i may just replace it
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Old 07-14-2009, 06:34 PM   #8
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Quote:
Originally Posted by cbr600F4 View Post
does this happen while at a steady speed, or accerating or decerating???
it is definately at acceleration. havent really paid attention while slowing down
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Old 07-14-2009, 06:34 PM   #9
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Old 07-14-2009, 06:35 PM   #10
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oh I see, you said under a load. Make sure the chain is tight, my sprocket is needing to be changed, and when the chain gets even a little loose I get the popping sound untill I tighten the chain again.

Sounds like you need a new sprocket, IMO
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Old 07-14-2009, 06:35 PM   #11
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Quote:
Originally Posted by MudBug View Post
I would replace sprockets and chain, think about if you are buying it....would be concered if you seen a new chain on old sprockets? Not bashing but it would look like you half assed the maint. on the bike.
you're right
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Old 07-14-2009, 06:39 PM   #12
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FYI Per Patrick at Motorcycles Unlimited go with steel, the aluminum one the person before me put on is a POS and will wear very fast.
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Old 07-14-2009, 06:40 PM   #13
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Quote:
Originally Posted by Old School RR View Post
you're right
Also, the new chain will wear out much faster on old sprockets.

If you replace the chain, make sure you used the o-ring spacers while riveting the master in. Often, people do not use them and this will create a permanent tight spot in the chain because they crushed the o-rings. (or x-rings, etc. depending on the chain).
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Old 07-14-2009, 06:40 PM   #14
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Old 07-14-2009, 06:40 PM   #15
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Take a look at the rear sprocket. Are some of the teeth worn down or broken? I've seen some rear sprockets with absolutely crazy amounts of wear.

Time for a visit to Motorcycles Unlimited, it sounds like. New chain and sprockets, and now you can go down one in the front. Woo hoo!

-Curt
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Old 07-14-2009, 06:41 PM   #16
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Quote:
Originally Posted by cbr600F4 View Post
FYI Per Patrick at Motorcycles Unlimited go with steel, the aluminum one the person before me put on is a POS and will wear very fast.
yeah i heard that too. was just thinking of going with a stock set.
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Old 07-14-2009, 06:42 PM   #17
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Old 07-14-2009, 06:43 PM   #18
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Quote:
Originally Posted by maxgs View Post
Take a look at the rear sprocket. Are some of the teeth worn down or broken? I've seen some rear sprockets with absolutely crazy amounts of wear.

Time for a visit to Motorcycles Unlimited, it sounds like. New chain and sprockets, and now you can go down one in the front. Woo hoo!

-Curt
dont think it is. i put it on the rear stand and walked the tire around looked at the chain and both sprockets seperately. was just thinking the chain itself is going bad and wanted others opinions.
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Old 07-14-2009, 06:44 PM   #19
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Quote:
Originally Posted by MudBug View Post
see i am not always a head.
, never said you were
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Old 07-14-2009, 08:02 PM   #20
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When you adjust a chain, put it up on a stand and check the free play in the widest section of the chain. As you rotate the wheel and stop every few inches you may find short and longer spots... this is whats causing the pops.

If you adjust your chain on the ground good in a loose spot, it becomes real tight as it spins over a tight spot.

You're literally ripping your chain forward and back; and the popping is sounds of the chain slapping and the elongated link sections snapping as the teeth dont clear the chain links. The rear sprocket teeth probably look nice and round on one side.

Remember to lube your chain every 600 miles, check for adjustment every 1k or so.
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