Beginner restoring an old bike - jockey wheels.

elcani

Hi

I've just taken possession of an old Ribble racing bike, with the intention of stripping it down, painting it (I've got a mate who can blast it and spray it) and servicing/replacing all the bits. I've got new Gary Fisher Mendota on order, but I want to hone my fettling skills on this.

First problem is the alloy seatpost is completely stuck in the steel frame, but I've read a few threads and websites and am aware of the different approaches to take. Ammonia is on the way, but I fear internal hacksaw action might be the only way.

Anyway, today I removed the derailleur to give it a clean up, and saw the jockey wheels were pretty chewed up. The groupset is Shimano 600 and I'm wondering whether replacements are available. They don't have proper bearing as such just a little metal 'tube' with caps at each end and the bolt running through it. Any ideas?

I may actually go to single speed if the gears are b*ggered, but I would like to get them going if possible as I live in a very hilly area.

Many thanks.

Anonymous

Try some Liquid Wrench on the seat post/tube. I used it on an early '70's Continnental. Worked great. Apply and leave it 24 hrs.

killiekosmos

Like these?

http://www.sjscycles.co.uk/product-Shim ... eel-(Upper)-pulley--Each-2138.htm

Ultegra is the name for what was 600.

elcani

So they will work? Thanks. Problem is £16 is a bit steep for an old hack. Any cheaper options? Would these do the job? http://tinyurl.com/69kltr

Thanks.

synchronicity

I thought they were pretty much all the same size. I could be wrong though. :oops:

System_1

I just replaced the jockey wheels on my Tiagra with some Tacx ones. I think the wheels themselves are all the same size, other than being Campag or Shimano specific. It's the width of the bearing that seems to matter as mine came with 4 different sized spacers.

cpt_spalding

Try PlusGas on the seatpost.

Would alloy shrink further than steel in cold? I'm sure garages freeze stuff to loosen joints / siezed bolts etc. Don't know how you could access that though.

elcani

I think freezing could work, as alloy does contract faster than steel. The problem is freezing a bike frame! From what I've read, penetrating fluids are not much use when dealing with an alloy post in a steel tube, so I think ammonia (which dissolves the chemical bond) is worth a try. LBS charge £35 an hour so if I do take it to them I want to have treated it first, in the hope that it pops out quickly when clamped in a vice and twisted.

Cheers

Pullman1937

Go to your local council recycling centre on a warm sunny afternoon when people are spring cleaning. Wait for the first kids bike to be dumped and snaffle the rear mech. Two 5/6 speed compatible Shimano jockey wheels for nothing. Will do everything the Tacx ones will at a fraction of the cost and there will also be no problem with compatibility which you may experience using 8/9/10 speed jockey wheels in an older mech.

Hugh A

Quite a few of the mail order guys do spare jockey wheels. As they're such a small item
Try here as Chain Reaction send post free:
http://www.chainreactioncycles.com/Cate ... goryID=662
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