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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Why is my bike doing this to my sprockets
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Author Topic: Why is my bike doing this to my sprockets  (Read 1876 times)

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Offline xmisslucyx

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Why is my bike doing this to my sprockets
« on: April 21, 2016, 06:29 PM »

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #1 on: April 21, 2016, 06:33 PM »
Its not the teeth is where the spline goes its taking chunks of metal out of it

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Offline Jaymz

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Re: Why is my bike doing this to my sprockets
« Reply #2 on: April 21, 2016, 06:35 PM »
Something isn't tight, or you haven't got a top hat washer on the spindle taking up the gap between the 19mm spindle and 22mm sprocket hole

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #3 on: April 21, 2016, 06:37 PM »
I've put 2 different the original and the eastan bike top hat and its still taking chunks out of it

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Offline Jaymz

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Re: Why is my bike doing this to my sprockets
« Reply #4 on: April 21, 2016, 06:39 PM »
Something isn't fitting right, there's play in it somewhere

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #5 on: April 21, 2016, 06:39 PM »
I'll take a pic of my spline and set up

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Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #6 on: April 21, 2016, 06:41 PM »

Offline Jaymz

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Re: Why is my bike doing this to my sprockets
« Reply #7 on: April 21, 2016, 06:50 PM »
That picture is minus the top hat washer right?

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #8 on: April 21, 2016, 06:50 PM »
Yes

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Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #9 on: April 21, 2016, 06:51 PM »
Yes

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #10 on: April 21, 2016, 07:00 PM »
My friend got the same set up as me and his sprocket is fine

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Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #11 on: April 21, 2016, 07:05 PM »
I was gonna get a new chain new sprocket and back wheel but I don't see the point if my sprocket is getting wrecked

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Offline CustardLips

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Re: Why is my bike doing this to my sprockets
« Reply #12 on: April 21, 2016, 07:24 PM »
Looks messy... might be worth a trip to your LBS.  :daumenhoch:
"Every year is getting shorter, never seem to find the time"

"WWG1WGA"

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #13 on: April 21, 2016, 07:26 PM »
Lbs ?

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Offline CustardLips

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Re: Why is my bike doing this to my sprockets
« Reply #14 on: April 21, 2016, 08:41 PM »
Local bike shop.  :daumenhoch:
"Every year is getting shorter, never seem to find the time"

"WWG1WGA"

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #15 on: April 21, 2016, 08:41 PM »
Its not long come back from there

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Offline pickle

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Re: Why is my bike doing this to my sprockets
« Reply #16 on: April 21, 2016, 08:51 PM »
Are the washers to small allowing for small movements? Over time will wear away soft alloys??

Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #17 on: April 21, 2016, 08:52 PM »
No everything is where it should be

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Offline xmisslucyx

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Re: Why is my bike doing this to my sprockets
« Reply #18 on: April 21, 2016, 09:11 PM »
All the washers top hat pinch bolt spline and crank are new so I Idk why its doing it

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Offline MartyC

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Re: Why is my bike doing this to my sprockets
« Reply #19 on: April 24, 2016, 09:44 AM »
Have you checked the chain alignment?  It looks like there is some movement in the tophat/chainring which is being exasperated by the chain alignment pulling it to one side.  Does your chain go loose and tight as it rotates?


Better to crash and burn than fade away

Offline john4130

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Re: Why is my bike doing this to my sprockets
« Reply #20 on: April 24, 2016, 10:57 AM »
it looks like the tophat washer is too small, probably a 22mm. try a 23.8mm one or 15/16" one in old money. it should be a tight fit into the chainring.

Offline CustardLips

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Re: Why is my bike doing this to my sprockets
« Reply #21 on: April 24, 2016, 11:44 AM »
Its not long come back from there


Don't take it back there then.  :LolLolLolLol:
"Every year is getting shorter, never seem to find the time"

"WWG1WGA"

griff

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Re: Why is my bike doing this to my sprockets
« Reply #22 on: April 24, 2016, 05:25 PM »
Its not long come back from there


Don't take it back there then.  :LolLolLolLol:

Wise words there  :2funny:

Offline oldtired

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Re: Why is my bike doing this to my sprockets
« Reply #23 on: June 04, 2016, 09:07 AM »
when you put it together is the top hat sat inside the chainring? or on the outside of it?

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Why is my bike doing this to my sprockets
 

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