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Echo Sprockets


Skoze
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Hey guys,

Just thought i'd see if anyone else has had any problems with the echo screw on 18T sprockets?

I put mine on, got bike sorted for what would have been this weekends London ride, all seemed fine. Went for a little ride to bed in the disc, make sure everything was working well, and it felt as though something in my drive train was slipping when i turned the cranks under a bit of power.

First thought was that my hub was skipping/ not engaging properly, but as i looked into it, with a bit of power i could turn the cranks without the sprocket moving.

Took it off the bike, thought it had stripped the thread off the crank, but when i got the sprocket off the threads were damaged, but nothing major enough to make this happen. I then measured up the thread on the sprocket against my old try-all freewheel, and the innner diameter is over 1mm wider than that of the try-all, so the cranks were turning inside those threads.

Busted out my dads engineering book from the loft, measured things, checked the tolerances, and according to those, it was a really sub-standard component.

Basically seeing if anyone else has had any issues with them, or if i've just got a dodgy one.

Matt

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hmm are you running a bashring if so which one?

Matx

Did Have a hen on it, and about a milimetre or two of the thread wasn't on the crank, so it still has 10mm on it.

Also, after use, how did you get yours off?

Matt

Edited by Skoze
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Did Have a hen on it, and about a milimetre or two of the thread wasn't on the crank, so it still has 10mm on it.

Also, after use, how did you get yours off?

Matt

put it in a vice and turned the crank with a big pole on the end pretty much.

Matx

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