Wheel change: Slicks for MTB wheels

marcpmusic

I have just purchased a Marin Novato, which has slick tires. I havn't been very confident in the snow/slush and ice riding on slicks to work, so last night I decided to change the wheels to my mountain bike wheels ( from my Marin Nail Trail) so that I'd have better grip and a feel safer with more contact with the ground.

This morning I had problems witht he gears having a mind of their own and not shifting correctly.

My question is, can I rectify this simply or is this an inherent problem when trying to use a MTB wheel that is for a 27 geared bike on a 24 geared bike rear mech etc.

I guess it might be something to do with the cog spacing or number of cogs?

Thanks

Marc

nicklouse

so you have a shifter with 9 gears and a cassette with 8 gears. will not work.

change the cassette over so it matches the shifter and you will be fine.

mmacavity

Cycling on ice, best of luck.

HAKKAPELIITTA W240 47/50-559 26" studded winter tyre for touring bikes Very durable steel studs with carbide pin (240 pcs)
Nokian Bicycle tyre

Nokian Extreme 294 Studded Mountain Bike Tires - 26"

marcpmusic

nicklouse wrote:

so you have a shifter with 9 gears and a cassette with 8 gears. will not work.

change the cassette over so it matches the shifter and you will be fine.

the shifter on the Novato is 8 gears and the cassette on my MTB wheels is 9 gears, I thought the gearing system would not use the 9th gear when using that wheel and would be ok.

Think I might just get some MTB tires to fit the original wheels until better weather appears.

nicklouse

the 8 and 9 and not compatible as the cassettes are the same width but there is an extra gear in the 9spd.

unlike the 7 and 8 spds where the cassette is wider on the 8 spd so what you suggest works. you just dont use the last click.

so in this case swap cassettes or tyres.

beverick

nicklouse wrote:

the 8 and 9 and not compatible as the cassettes are the same width but there is an extra gear in the 9spd.

unlike the 7 and 8 spds where the cassette is wider on the 8 spd so what you suggest works. you just dont use the last click.

so in this case swap cassettes or tyres.

Not to mention the fact that a 9 speed chain is narrower (and less chunky) than an 8 wich will also add to the incompatibility.

BTW, even if you swap like for like (ie 8 speed for 8 speed or 9 for 9) the difference in the amount of wear in the chain and casettes may also cause the chain to jump.

Bob

rolf_f

Why not just swap the tyres over?

Mind you, I'm not sure you'll find treaded tyres better except in snow. I think where ice/slippiness is concerned it is better to have the constant contact you get with slicks.