New gearing on old bike

Moonbiker

Hi want some lower gears on this:

http://www.cyclespeugeot.com/images/scan0009.jpg

If you look @ the info its 13-21 6 speed

The hub is uniglide

Where can I get something like a 14-28 for it that is compatible?

Monty Dog

The oracle Sheldon Brown has your answer - scroll down a bit:
http://sheldonbrown.com/k7.html
Uniglide cassettes are like the proverbial rocking-horse poo - you may be able to find a replacement hyperglide freehub or consider fitting a new hub.

andrew_s

"Uniglide" is the sprocket tooth profile, with beveled and twisted tips, rather than the ramps and cut down teeth that you get with the later hyperglide design. You could get both cassettes and screw-on freewheels in Uniglide.

If you do have a uniglide cassette and freehub, it removes by unscrewing the top gear sprocket using two chainwhips. Replacement uniglide cassettes are rare, and most of those remaining are in the smaller sizes similar to the one you have. The spline pattern is similar to the current freehub design, but doesn't have the wide spline that ensures that the sprockets line up with the ramps etc in the correct relationship to the adjoining sprockets. Sprockets from a Hyperglide cassette can be made to fit by grinding/filing the wide spline to the same width as all the others, but you will have to retain the 13T sprocket to hold the rest on, and take care to retain the alignment of the sprockets as well as you can (use a marker pen before separating the sprockets).

If you have a uniglide freewheel, any 6-speed screw-on block will do. If you take the wheel off and twiddle the sprockets backwards, and anything other than the end of the axle and the wheel itself remains stationary,it's a freewheel.

Moonbiker

Thanks

you may be able to find a replacement hyperglide freehub

Wanted to do this but can't find anywhere selling them?

If you have a uniglide freewheel, any 6-speed screw-on block will do.

Only found one place selling a uniglide one:

http://www.pedalpedlar.co.uk/collection ... cassette-1

When you say any screw on block does than mean they don't have to be uniglide they can be the older screw on type?

So this one will do?

http://www.ebay.co.uk/itm/SUNRACE-QUALI ... 1162371584

Monty Dog

Just to clarify, if it is a screw-on freewheel, then simply remove and replace with Sunrace or similar. Becomes a bit more tricky if your hub is Uniglide cassette - posting a close-up photo of the hub will help to identify the type.

drlodge

andrew_s wrote:

If you do have a uniglide cassette and freehub, it removes by unscrewing the top gear sprocket using two chainwhips. Replacement uniglide cassettes are rare, and most of those remaining are in the smaller sizes similar to the one you have. The spline pattern is similar to the current freehub design, but doesn't have the wide spline that ensures that the sprockets line up with the ramps etc in the correct relationship to the adjoining sprockets. Sprockets from a Hyperglide cassette can be made to fit by grinding/filing the wide spline to the same width as all the others, but you will have to retain the 13T sprocket to hold the rest on, and take care to retain the alignment of the sprockets as well as you can (use a marker pen before separating the sprockets).

This ---^

I have a Shimano DuraAce uniglide freehub on my Condor and have fitted a 7 speed cassette on it. I had to keep the two smallest sprockets (for a non dura ace you'd need to keep just the smallest) and then used the relevant sprockets from an HG50 9 speed cassette (I think) to get me a 13-14-16-18-21-24-28 cassette. Works great with a Shimergo setup - Dura Ace rear derailleur and Campag 10 speed shifters.

I also have a selection of original uniglide sprockets in my spares box...

Moonbiker

Its is a uniglide not a screw on



Like the one left in the picture from the sheldon page


drlodge did you have to file the hyperglide sprockets from the HG50 9 speed cassette to fit them on?

secretsam

531 Pro was decent stuff, so this bike's worth keeping.

Solution:
1. Go to a bike shop, one with old hands at the pump
2. Get them to re-space the rear to 130mm
3. Fit a modern set of wheels that'll take 8+ sprockets
4. Buy gear levers as required - my old steelie has DT Shimanos, or you could go the whole hog and go STI/Ergo
5. Sell the old bits on Flea-Bay to some vintage/retro bike bearded loon

drlodge

531 Pro has 753 rear stays and Reynolds recommend not to re-space (cold set) them. Doing so may trash the frame.

Moonbiker - yes I took a dremel to the hyperglide sprockets to take out a bit of metal on each of them. Wasn't a big deal. PM me if you want to chat thought it. I also have 531 Pro on my Condor and I spoke to THE man at Reynolds about cold setting the frame and they said - don't do it. I have a 13-28 7 speed cassette, Ultegra Compact 34-50 chainset and 10 speed campag shifters, 9 speed chain. Works a treat.

secretsam

drlodge wrote:

531 Pro has 753 rear stays and Reynolds recommend not to re-space (cold set) them. Doing so may trash the frame.

Ah. Problem. Sorry, ignore my post :oops: