Psyclist
Über Member
- Location
- Northamptonshire
Just wondering what size rear mech (Campag Veloce) i.e small or medium etc. is needed for a compact chainring? 10 speed.
Thanks.
Thanks.
Which rear mech size?
- Thread starter Psyclist
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derrick
The Glue that binds us together.
- Location
- On the edge of London
It depends on what size cassette you are using, i think up to 27 you can use the short cage.
OP
OP
Psyclist
Über Member
- Location
- Northamptonshire
Thanks Derrick. I'll look at cassette options. And would it be okay using a 105 chainset instead of a Campag one?
Rob3rt
Man or Moose!
- Location
- Manchester
Usually yes, provided the Campag groupset is 10spd and not 11spd, since 105 is 10spd and an 11spd chain might not seat right.
Most chainsets can be substituted into any groupset provided the spd count is the same, the difference between what can be done and what is optimal varies though.
I would say, don't bother with a compact chainset though, if you have one, live with it, not that much difference, but given the choice, I would always go double.
Most chainsets can be substituted into any groupset provided the spd count is the same, the difference between what can be done and what is optimal varies though.
I would say, don't bother with a compact chainset though, if you have one, live with it, not that much difference, but given the choice, I would always go double.
derrick
The Glue that binds us together.
- Location
- On the edge of London
Personally i would not touch 105 i am a campag man, i am not sure what you can mix and match.
OP
OP
Psyclist
Über Member
- Location
- Northamptonshire
Cheers. Not very good on the tech side of bikes. What would you recommend? Campag or Shimano crankset? The Veloce is 10 speed, I've gone for a 12-27t cassette too, so will get a short rear mech.
RecordAceFromNew
Swinging Member
- Location
- West London
derrick
The Glue that binds us together.
- Location
- On the edge of London
What is a wrap range, my other half is using a 27 rear cassette on a short cage works perfectly.
Rob3rt
Man or Moose!
- Location
- Manchester
Honestly, not a clue other than my own preference for running matching chainsets to the rest of the groupset unless there is an aftermarket brand that offers some advantage or additional bling points.
smokeysmoo
Legendary Member
- Location
- Bolton, not very far from Nob End
I used to run a 105 10 speed cassette on a complete Veloce groupset. It was absolutely fine.
FWIW I hated Veloce and got rid at the first chance I had and went back to Shimano.
Granted it' rider preference, but Campag is not for me
FWIW I hated Veloce and got rid at the first chance I had and went back to Shimano.
Granted it' rider preference, but Campag is not for me
RecordAceFromNew
Swinging Member
- Location
- West London
See the link I attached above for the maths. Essentially the difference in length of chain that wraps between big big and small small is 31/2 or 15.75 "links" or 7.875 inches, which needs to be taken up by the sprung cage of the rear mech to stop either the chain being too short for big big (which can be disastrous for machine and rider) or too long for small small (which means a drooping chain and/or the chain doubling up rubbing against itself at the top jockey wheel). Campag's official wrap capacity for short cage is 27T. Exceeding it by 4T "might" just be ok, but why chance it for a new purchase? Plus who knows one day the OP might decide to go for a 12-29T cassette to tackle a hilly terrain...
Your OH having a large 27T at the back is a different issue, that is related to the max cog size capacity of the rear mech (and which is more dependent on the design/length of the parallelogram rather than the cage length between the two jockey wheels, and when you run out of max cog size capacity your top jockey wheel will hit the large cog). IIRC all current Campag rear mechs cater for 27T officially in that regard.
OP
OP
Psyclist
Über Member
- Location
- Northamptonshire
I used to run a 105 10 speed cassette on a complete Veloce groupset. It was absolutely fine.
FWIW I hated Veloce and got rid at the first chance I had and went back to Shimano.
Granted it' rider preference, but Campag is not for me
Ta for the advice, and to everyone else. I rode a friends Bianchi with Veloce a couple of years back, and liked it. But as you said, to each their own
youngoldbloke
The older I get, the faster I used to be ...
I run a 12-27 Miche cassette (I don't think Campag do a 12-27) with a short cage Veloce mech (2007) vintage. 50-34 compact. No problem. I read in the Campag Tech Docs that the 2013 10 speed mechs (short and medium) can run a 30Tcog. Can't find any mention of 'wrap range'. How old is that Branford Bike article?
OP
OP
Psyclist
Über Member
- Location
- Northamptonshire
I changed for a medium cage in the end. And the Centaur comes in 12-27.
RecordAceFromNew
Swinging Member
- Location
- West London
As I mentioned above, wrap capacity and maximum sized large cog are different rear mech spec parameters. The former is primarily driven by cage length. The latter is driven mainly by parallelogram design, but is also affected by mech hanger length, B screw adjustment, jockey wheel size etc.
As you can see from this 2013 Campag technical manual e.g. current Veloce rear mechs come in 3 cage lengths (55mm, 72.5mm and 89mm, see page 210 and 212) exactly as the link I provided above says - why do you think Campag are selling mechs with different cage lengths?
Anyway for the (possibly official) answer you can see blurps from e.g. Ribble's current ad here.
For 11 speed and newer mechs and certain chainsets I believe Campag had been trying to standardise cage length, but the OP has 10 speed equipment.
In case there is any misunderstanding I am as adventurous as anybody in pushing mech official boundaries - I am currently running my full sized folder with a 11-32 cassette using a DuraAce racing rear mech with not a lick of trouble! However I simply see no reason to advice the OP to buy a short cage when his stated requirement exceeds spec.
