SRAM rear road cassette can i use for MTBs?

Turrican

hi all im doing up a DH / freeridse bike and thinking of going single chainste instead of doubles and wondered if i could use road Sram rear cassette?? as there smaller cogs so i could faster yes, am i right in thinking this??

P-Jay

Capt Yeti wrote:

hi all im doing up a DH / freeridse bike and thinking of going single chainste instead of doubles and wondered if i could use road Sram rear cassette?? as there smaller cogs so i could faster yes, am i right in thinking this??

Most DH bikes run a single front gear, FR tend to run a twin.

You can use a road cassett (and many racers do) the top gearing is the same as the size of the smallest cog (the highest gear of course) is limited by the size of the hub, but all the other gears will be higher than a normal MTB cassett and much closer together, also makes clearence with super-short caged derailers less of an issue.

The downside to all this is the lowest gear is still very high, which is a nightmare if you intend to use it for anything other than high-speed downhill stuff, I.E. if you take a pilgrimage to the Alps, it'll be tough just plodding around town to lunch, back and fore the lifts/challet etc.

supersonic

You can use one. But the smallest cog will be no smaller than on a standard 11-30 cassette. You will however close up the ratios.

nicklouse

Capt Yeti wrote:

hi all im doing up a DH / freeridse bike and thinking of going single chainste instead of doubles and wondered if i could use road Sram rear cassette?? as there smaller cogs so i could faster yes, am i right in thinking this??

no faster.

a road cassette is actually the wrong term it is just a close ratio cassette.

Please not (as Sonic has implied) you may find your high gear is actually lower.

check the number of teeth.

Tim.s

Ive got an Ultegra road cassette and a lovely black 105 short mech on my freeride hardtail, single ring up front and an LX shifter. Works very well, quick punchy shifts but you really wouldnt want to go uphill very far on it

Turrican

Thanks guys was just thinking about it, and yeah of course it be close ratio for shiting like race car or rally car and get up to speed quicker then for Dh. Ill think ill stick to standard MTB ones then so can get up bit hills if have too as i not just like Dh at speed but riding about looking for things to ride and technically a challenge.

Still single chainset or double what think i am thinking singe;l as reduces one shifter and f mech and maybe bit of weight.