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I've been running a single ring chainset for a few years without a chain guide (and suffering derailed chains every now and then, but always at the worst possible moment), and now have a new Alpitude with the ISCG mount around the BB shell.
Never used a chain guide before - what ones should I be looking at for XC use?
narrow wide ring
It's a 34T 3/32" ring and chain - does it matter?
He means you should use one of these [url= http://www.workscomponents.co.uk/works-components-104bcd-thick--thin-chainring-alternating-thickness-extended-tooth-design-270-p.asp ]narrow wide chain rings[/url] and then you wont drop your chain anymore and it wont weigh any extra.
Interesting... not seen those before. But I've just bought a new 34T steel ring and occasionally use an old 32T one too depending on where I'm riding.
The magic rings are genuinely better than a top-only chain device... Brilliant stuff.
Once you've used a NW ring you won't go back to guides, trust me.