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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Sprocket top hat washer play
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Author Topic: Sprocket top hat washer play  (Read 975 times)

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Offline Disco Dave

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Sprocket top hat washer play
« on: March 11, 2018, 06:48 PM »
Hi,
I just got a new sprocket (Stolen cartwheel). I noticed the top hat washer doesn't fit tight into the sprocket, there's just under a mm play between the sprocket and the washer. So when it's on and I turn the sprocket the chain goes from tight to loose, at the same point in every revolution.

Should there be play between the washer and the sprocket like this?

Offline CustardLips

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Re: Sprocket top hat washer play
« Reply #1 on: March 11, 2018, 08:39 PM »
Sounds like you need another top hat washer... there are slightly different sizes.   :daumenhoch:
"Every year is getting shorter, never seem to find the time"

"WWG1WGA"

Offline Disco Dave

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Re: Sprocket top hat washer play
« Reply #2 on: March 11, 2018, 10:17 PM »
Thanks but I don't think it can be that. The gap between the top hat washer and sprocket is only like 0.5mm. The different top hat washers available are 5/16" to 22mm, 5/16" to 19mm, an 22mm to 19mm. 5/16" is 23.8mm so if it wa the wrong washer it would have a 2-3mm gap. Also I have three 5/16" top hat washers, all fit the same with a little play in the sprocket.
They should fit tight with no play right?

Offline pickle

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Re: Sprocket top hat washer play
« Reply #3 on: March 13, 2018, 11:43 AM »
Yes, the top hat washer should be a good tight fit

Offline Disco Dave

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Re: Sprocket top hat washer play
« Reply #4 on: March 13, 2018, 05:54 PM »
They've refunded me and told me to throw the sprocket away. Anyone want a dodgy Stolen Cartwheel 25t polished silver cheap?  :LolLolLolLol:

Offline oldtired

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Re: Sprocket top hat washer play
« Reply #5 on: March 13, 2018, 06:26 PM »
keep the sprocket if you like it , shim the gap with a pop can........      sorry   i'll get me coat   :-[     i meant beer can  guiness ones are recomended by myself  :daumenhoch:

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Sprocket top hat washer play
 

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