retrofitting an older bike

Have an old Rockhopper that still has friction shifters and derailleurs, along with a 6 spd
cluster. I believe, because of the rear droput spacing, that 6 is the limit for the cluster,
but I'd like to upgrade to indexed shifting.

Any ideas about the way to go and costs involved would be appreciated. I can do my own work, so
there's no need to involve a local shop in this except for purchasing the components.

Bob

On 12/2/2012 10:58 AM, Bob Landry wrote:
Have an old Rockhopper that still has friction shifters and derailleurs, along with a 6 spd
cluster. I believe, because of the rear droput spacing, that 6 is the limit for the cluster,
but I'd like to upgrade to indexed shifting.

Any ideas about the way to go and costs involved would be appreciated. I can do my own work, so
there's no need to involve a local shop in this except for purchasing the components.


Six chain, six freewheel, right side SIS-6 shifter, SIS
compatible rear changer and compatible gear wire/casing all
for about $70. These are all current parts and not expensive.

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Open every day since 1 April, 1971

On Sunday, December 2, 2012 11:58:43 AM UTC-5, Bob Landry wrote:
Have an old Rockhopper that still has friction shifters and derailleurs, along with a 6 spd

cluster. I believe, because of the rear droput spacing, that 6 is the limit for the cluster,

but I'd like to upgrade to indexed shifting.



Any ideas about the way to go and costs involved would be appreciated. I can do my own work, so

there's no need to involve a local shop in this except for purchasing the components.



Bob

Is that custer a freewheel or an ancient Uniglide cassette? If it's a cassette where the small cog screws on then it's an orphan and extremely hard to get sprockets for. If it's a freewheel you should be able to get a 6 speed index one although a 7 speed one will probably fit both the hub and the current frame spacing. If there is a bicycle Co-op near you they are usually a great source for 6 and 7 speed index shifters.

Cheers

go with a complete tear down n rebuild including ID paint with white rusto.

ge a new front hub with the new rear hub.

try Universal Cycles if Nashbar or Jenson fails you around February 1 when the M.O. people sell cheap

Bob wrote:
Have an old Rockhopper that still has friction shifters and derailleurs, along with a 6 spd
cluster. I believe, because of the rear droput spacing, that 6 is the limit for the cluster,
but I'd like to upgrade to indexed shifting.
Any ideas about the way to go and costs involved would be appreciated. I can do my own work, so
there's no need to involve a local shop in this except for purchasing the components.
Bob


It's trivial to spread the rear triangle a little if you want to get a new rear wheel and upgrade to 8 speeds. 8 speed shifters are cheap. Your existing derailer would probably work fine.

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