Sprocket top hat washer play

[Disco Dave]

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?

[CustardLips]

Sounds like you need another top hat washer... there are slightly different sizes.   

[Disco Dave]

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?

[pickle]

Yes, the top hat washer should be a good tight fit

[Disco Dave]

They've refunded me and told me to throw the sprocket away. Anyone want a dodgy Stolen Cartwheel 25t polished silver cheap? 

[oldtired]

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