What type of cassette do I need?

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Bought a Bianchi Sempre as an impulse purchase and not expecting to like it. Amazed to find I have ridden it into the ground and it needs a new cassette. I know nothing about modern bikes. It is a Campagnolo Veloce groupset but with FSA cranks and cassette. The hubs are Reparto Corse. What do I need to buy?
 

raleighnut

Legendary Member
It must be a Campagnolo one, same no of cogs and whichever of their range of suitable levels you can afford. Stick with Veloce?:unsure:
 

stephec

Squire
Location
Bolton
Do you find you are comfy with the range of gears you have at the moment, or would you like something to make it easier going up hills? If you're happy with what you've got then it's straightforward.

Are you able to make out the markings on the top and bottom cogs that tell you how many teeth they have?

If you can see the marks then post up on here what it's says and we can advise further for you.

Oh, you'll need a new chain as well.
 
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Apollonius

Apollonius

Guru
Thanks for all the help. I ended up taking it off and walking into Fred Williams' shop with it in a carrier bag. Since I had used a Shimano freewheel splined tool to remove it (the only one of the three I have that fitted) I was still unsure.
Yep, standard 25/13 Veloce £40 to you sir. Problem solved.
Oh, and it was fitting a new chain that revealed that I had knackered the cassette. I think I had only done about 2000km on it, but I do go out in all weathers. Don't worry about the new chain. It had only done about 50m before the need for a new cassette was obvious.
I suspect I will need to replace the BB30 soon, as well. They don't seem to like the rain much, either.
 
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Apollonius

Apollonius

Guru
I used to be a "steel bikes, toe-clips and wooly jumpers" type. Since I bought the Bianchi, I am all matching lycra and cool shades. Quite embarrassing for an OAP I suppose, but at least being ancient means you don't care! I do have a lot to learn about modern bikes though.
 
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Apollonius

Apollonius

Guru
Job completed and bike back in action. I had never taken a freehub apart before so had no idea what to expect. As this is the beginners section, forgive me while I ask some dumb or obvious questions.
1. What I undid the locknut with Shimano spline tool from a Shimano 6-speed freewheel (surprise) it made a sort of clicking whirring noise. This was caused by two radially serrated friction faces rubbing together as it undid. Is this normal? It made the same noise being done up again.

2. The hub spline is a complex thing with many different "keys" which ensure the many and various bits of the cassette can only go on in one place. is this an industry standard or are Campagnolo ones different from Shimano and others?

3. The splined shaft of the freehub shows some "hammering" fromthe sprockets, resulting in some catchy grooves on the shaft. This reminds me of the clutch centre of a Norton Commando which I had ages ago - a dreadful bit of British engineering. On the Norton this caused the clutch to not be a clutch anymore. Well, it would clutch, but not unclutch, if you see what I mean. Will this be a problem on the bike?

4. I was surprised to find the cassette was a budle of bits assemebled onto a plastic slider. Is there a way of buying individual sprockets? After all, the tiny ones are hardly used. It is the big ones that are worn out. (I am old.)

Thanks again for help and advice.
 

raleighnut

Legendary Member
Campagnolo hubs only accept Campagnolo gears, its normal to have some chatter marks on the hub as long as they're not too bad and all sprockets loose is so that you can tailor individual gears to specific conditions, if that is you have a rackfull to choose from (bit superfluous in this age of 10/11 speed clusters).
 
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