Mtn bike chainrings - Compact?

[AllanT]

OK this is one for all you cyclists on here, not sure if anyone would know whether this is possible, or if they have done such a thing themselves??..

Just upgraded my specialised rockhopper mtn bike & so as a result I have a spare crankset, consisting of a Granny, 34tooth (also have a 36 tooth) & a 44 tooth.

I am at some point planning on upgrading my road bike which is currently fitted with a campagnolo centaur 53 - 39 to a record groupset plus get a new frame, handlebars, forks, seatpost, etc (basically a whole new bike except for the wheels, 10 speed record cassete & Italia SLR saddle), which would leave me with enough bits to build a winter bike (to stop my dream racer getting trashed).

So as we all know winter is a much windier time of year & I live on a hilly island & tend more toward extremely high cadences (100 + - I'm also a runner), could I use the spare chainrings off the mtn bike to make a compact double? (I was thinking like 44 - 36)

Would I be able to use the campag front deraillier & cranks with the chainrings from the mtn bike?

Or the rings & cranks off the mtn bike as a double with the camapag deraillier?

Anyone experimented with anything like this? I know as a rule they say campag is not compatible with shimano, but there's often a lot more exceptions to this than is let on.

I would imagine that there wouldn't be any problems with the difference in teeth between the chainsets, as there would actually be less of a tooth difference with my 'compact' set (8 teeth if I used the 44/36, 10 if I used the 44/34)than with the existing set up (53/39 - a 14 tooth difference)? I presume I would just adjust the height of the derailier & the screws to limit the travel of the deraillier???

[daz h]

OK this is one for all you cyclists on here, not sure if anyone would know whether this is possible, or if they have done such a thing themselves??..

Just upgraded my specialised rockhopper mtn bike & so as a result I have a spare crankset, consisting of a Granny, 34tooth (also have a 36 tooth) & a 44 tooth.

I am at some point planning on upgrading my road bike which is currently fitted with a campagnolo centaur 53 - 39 to a record groupset plus get a new frame, handlebars, forks, seatpost, etc (basically a whole new bike except for the wheels, 10 speed record cassete & Italia SLR saddle), which would leave me with enough bits to build a winter bike (to stop my dream racer getting trashed).

So as we all know winter is a much windier time of year & I live on a hilly island & tend more toward extremely high cadences (100 + - I'm also a runner), could I use the spare chainrings off the mtn bike to make a compact double? (I was thinking like 44 - 36)

Would I be able to use the campag front deraillier & cranks with the chainrings from the mtn bike?

Or the rings & cranks off the mtn bike as a double with the camapag deraillier?

Anyone experimented with anything like this? I know as a rule they say campag is not compatible with shimano, but there's often a lot more exceptions to this than is let on.

I would imagine that there wouldn't be any problems with the difference in teeth between the chainsets, as there would actually be less of a tooth difference with my 'compact' set (8 teeth if I used the 44/36, 10 if I used the 44/34)than with the existing set up (53/39 - a 14 tooth difference)? I presume I would just adjust the height of the derailier & the screws to limit the travel of the deraillier???

nopey no

[daz h]

if you mix campag with dare i say it shimano
you have entered the twilight zone
the bike will be cursed

[AllanT]

if you mix campag with dare i say it shimano
you have entered the twilight zone
the bike will be cursed

Any technical explanations for this Daz, or is it just all based on having eaten too much cheese???

[Track Fairy]

width of the chain is the main issue I can think of. ie cassette and chainrings might be different, esp a prob if you are trying to mix 9 and 10 speed bits

[daz h]

width of the chain is the main issue I can think of. ie cassette and chainrings might be different, esp a prob if you are trying to mix 9 and 10 speed bits

they will be different im sure
im just a campag man thats all there is to it
ive dropped my refurbed frame off at the bike shop today for re build, allan take it too a good bike shop, they will help u out im sure

[Gravymuncher]

Width of the chain is solveable by replacing the chain rings (the crank is the expensive bit) Does the crank fit the road bottom bracket?

I used to know all about this, but I've let things slip over the last few years, I very much doubt it will work, but can't say no for definite.

[AllanT]

they will be different im sure
im just a campag man thats all there is to it
ive dropped my refurbed frame off at the bike shop today for re build, allan take it too a good bike shop, they will help u out im sure

Hey Daz, I'm going to build my lovely new racing bike myself (when I've raised the cash) That will be a campy record through & through with a CF frame & a racing chainset (53/39 - 11 - 23 cassette).

All I'm talking about is what to do with the bits left over for my winter bike. I don't want to spend big money on something that is basically going to be only for scrappy uses.

[AllanT]

Width of the chain is solveable by replacing the chain rings (the crank is the expensive bit) Does the crank fit the road bottom bracket?

I used to know all about this, but I've let things slip over the last few years, I very much doubt it will work, but can't say no for definite.

Right I've not tried yet as I am working through this mentally & researching to see whether it's feasable.

However I do still have the mtn bike cranks & the bottom bracket from the mtn bike (upgraded that too) so if I can't fit the chain rings to the campy chainset, I can always use the mtn bike cranks & if they don't fit on the campy bottom bracket I can replace that for nothing as well.

[daz h]

Hey Daz, I'm going to build my lovely new racing bike myself (when I've raised the cash) That will be a campy record through & through with a CF frame & a racing chainset (53/39 - 11 - 23 cassette).

All I'm talking about is what to do with the bits left over for my winter bike. I don't want to spend big money on something that is basically going to be only for scrappy uses.

its cheaper to buy a full bike , trust me on this
you will only waste money