Iv worn through my first set of xc rings well outer and middle, I spend all my time in the middle ring so am considering going to a single front ring.
a
Iv done it before using a old middle ring and a bash plus a mech to help the chain stay on. I found that the chain has a tendency of coming off what ever i did.
So whats the best way round it single front specific ring ??? mech no mech ?
new MRP thing, £39. reviewed in this months dirt.
1. Use the search (its all been said before)
2. the answer is always the same: single specific ring, and a chain guide (MRP 1.x or E.13 XCX) but a front mech will work. bash isnt needed.
3. recommended ratios will be a 32-36t ring with an 11-34t cassette, depending on your local hills
4. Do it! you wont regret it
Shorten the chain as well. With an unramped chainring you might get away without a chainguide. or try a bash ring and a jumpstop. cahinguide is best tho
yeah I thought that would be the answer, just had a quick look on crc couldnt see an un ramped rings in stock any recomendations
32t Renthal chainring and MRPx1
[img] 
[/img]
most rings badged as "downhill" are unramped
or go to charlie the bikemonger who tells you they're suitable ([url= http://www.charliethebikemonger.com/userimages/procart4.htm ]here[/url])
i run a middleburn ring with the MRP 1x device. works fantastic on the 9 speed.
its great.
36t Middleburn unramped ring and Paul Components Chain Keeper 🙂
On-one singlespeed chainring will work with a 9speed chain. As will a Thorn one from SJS for a little less money
A bashring and an Ngear jump stop will be cheaper than a 'chaindevice' though
Theres an FSA one on CRC for £16 and I thought jump stops were about £10? (I don't know?)
The mrp/e13 front mech style 'chain devices' are about £40. Rohloff does something similar for £40-50