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Broken rubber on front sprocket
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zirconxi Offline
1st Service Completed

Malaysia
Posts: 248
Joined: Jun 2019
Post: #1
Broken rubber on front sprocket
Recently i just found out my front sprocket had a rubber damper on it and its now broken. The sprocket teeth are still usable. But the rubber damper are broken and currently hanging and dangle around inside when the sprocket turn. No funny sound or blocking anything. Do i have to open up the sprocket cover to take it out? Or can i wait till its time to change the sprocket

The orange pointer is pointing at the loose rubber. Theres another part on the inner side of the sprocket.


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(This post was last modified: 05-24-2020 06:21 AM by zirconxi.)
05-24-2020 06:10 AM
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The ferret Offline
Forum Moderator

Ohio
Posts: 31,277
Joined: Apr 2013
Post: #2
RE: Broken rubber on front sprocket
That is just a sound deadening buffer.You do have to takeoff the sprocket cover to get to it, but other than trimming off the flap there isn't much you can do to it. Aftermarket sprockets don't have that. Personally I wouldn't worry about it.

.
Defender of the Realm
2014 DLX (the pleasure horse)
2021 NC750X DCT (Angry Bird)
05-24-2020 07:31 AM
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Lord Popgun Offline
I find your lack of RLETs disturbing

Virginia Beach
Posts: 10,442
Joined: Apr 2013
Post: #3
RE: Broken rubber on front sprocket
I don’t know if it can happen, but I’d be worried about it damaging the seal.

If you come to a fork in the road, take it!
2013 CB1100
2012 ST1300
Holder of the CB1100Forum Secret Decoder Ring
05-24-2020 07:41 AM
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zirconxi Offline
1st Service Completed

Malaysia
Posts: 248
Joined: Jun 2019
Post: #4
RE: Broken rubber on front sprocket
Ok, 45 minutes to get the broken rubber out. With 30 minutes trying to remove the inner part.... Done some cleanup on gooey chain grease, and ready for ride...


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05-24-2020 09:15 AM
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Lord Popgun Offline
I find your lack of RLETs disturbing

Virginia Beach
Posts: 10,442
Joined: Apr 2013
Post: #5
RE: Broken rubber on front sprocket
Nice job! I figured you’d have to take the sprocket off. Glad you didn’t.

If you come to a fork in the road, take it!
2013 CB1100
2012 ST1300
Holder of the CB1100Forum Secret Decoder Ring
05-24-2020 09:34 AM
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The ferret Offline
Forum Moderator

Ohio
Posts: 31,277
Joined: Apr 2013
Post: #6
RE: Broken rubber on front sprocket
In that bottom pic, the front sprocket looks like it might be due for replacement soon, The teeth are starting to curl.

.
Defender of the Realm
2014 DLX (the pleasure horse)
2021 NC750X DCT (Angry Bird)
05-24-2020 12:21 PM
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peterbaron Online
Lives On Two Wheels

ON, Canada
Posts: 9,142
Joined: Jan 2016
Post: #7
RE: Broken rubber on front sprocket
How many kms on this sprocket???

"Drop a gear and disappear"®
'14 CB1100 DLX-#170 ® 26K kms (FOX - pleasure horse)
'14 CB1100/ABS ® 113K kms (MYSHOL - white draft horse)
'13 CB1100/c-ABS - 56K kms - sold
*Grand Chancellor*
05-24-2020 12:36 PM
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zirconxi Offline
1st Service Completed

Malaysia
Posts: 248
Joined: Jun 2019
Post: #8
RE: Broken rubber on front sprocket
Ya, I notice the teeth getting into shuriken form. Its been in service for more than 36000 KM. I had check the chain and sprocket mating and it is still good. No gap when pulling chain away from sprocket. The chain also don't have any kinked link. Maybe can last another 5-10k.
05-24-2020 06:17 PM
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