campy crank question

[Fixed]

bro i don't know much about campy cranks here is my question i have newer 50 chain ring it's campy will it fit on a n older campy crank or did they change their bolt pattern at some time ?
thanks sorry about the dumb question
cheers and merry christmas :beer:

[J.Greene]

c-record and newer uses a different pattern(135mm) than s record or n record(144mm).

JG

[merckx]

NR/SR was 144 bolt pattern. Everything since is 135 bolt pattern. Compact is 110.

[bironi]

And if you have an older 1960's vintage crank, they used 151 bolt pattern for a while.

[merckx]

And if you have an older 1960's vintage crank, they used 151 bolt pattern for a while.

and you may need some new cotter pins to go with the new chainrings.....

[Fixed]

why so many ? sure makes it hard to cobble someting together
cheers thanks well i have a 90's chorus crank and i don't think the newer ring will fit but i just held it up to it .
cheers

[J.Greene]

why so many ? sure makes it hard to cobble someting together
cheers thanks well i have a 90's chorus crank and i don't think the newer ring will fit but i just held it up to it .
cheers

The new ring should work with a 90's chorus crank, assuming the ring is new and not nos from 84 pr prior.

JG

[Fixed]

thanks 53 x17 works okay but i think 50 will be better
thanks again
cheers happy holidays

[zank]

To add to the complexity of the question...

Fixed, is it a 50 tooth compact (CT) ring? I don't think Campy makes a 50 tooth in their 135 pattern.

If it is a 50 tooth Compact (CT) ring, there are a couple of possibilities. Is it bright silver or gold-ish? If it is the gold-ish color, it is a Record level CT ring and has the proprietary 110/113 bolt circle. This can be used on all of the new CT Ultra Torque cranks and the older Record Carbon CT and Chorus Carbon CT cranks (square taper). It can not be used on the older Centaur aluminum CT (square taper), as this had a true 110 bcd.

Now, if it is shiny silver, it may have come off a newer Centaur CT Ultra Torque or an older Centaur CT (square taper). The way to tell is by the chain drop off pin. If the drop off pin is between two chainring bolt holes, it is designed for a 5 arm crank and came off of an older square taper Centaur CT crank and has s true 110 bolt circle. This will not fit on an Ultra Torque crank. If the drop off pin is in line with one of the chainring bolt holes, it is designed for a 4 arm crank and came off of a Centaur CT Ultra Torque crank. This can be used on all of the newer CT Ultra Torque cranks and the older Record Carbon CT and Chorus Carbon CT cranks (square taper).

Ugh. I think I covered most of it. So is it gold or silver? :)

Edit: And none of the CT rings will fit on a 90's Chorus crank.

[ShockTreatment]

Fixed,

Did the one from me work? I had it on a 92 Chorus. It should work unless it you have a compact or pre-86.

I share your frustration with the availablity of new 135mm rings in other than 53 or 52. If it's a new 50, it's probably compact.

[J.Greene]

I don't think Campy makes a 50 tooth in their 135 pattern.


They have in the past. I don't know that they have since 10speed has been the standard though.

JG

[Fixed]

[QUOTE=ShockTreatment]Fixed,

Did the one from me work? I had it on a 92 Chorus. It should work unless it you have a compact or pre-86.


that the one i'm working on thanks bro it'll be cool cheers

[thwart]

To add to the complexity of the question... Ugh. I think I covered most of it.

This would certainly be fuel for somebody who likes Shimano. Campy is great stuff but they really should get the priorities in order about changing things and obsolescence. Atmo.

[stevep]

fixed,
heave all that junk and buy some shimano stuff.

recycle...aluminum is worth $.20 a pound.

[Bill Bove]

Stronglight makes 135 chainrings in a variety of sizes, maybe Down East Bike Stuff sells them.

[Fixed]

bro it's cool i don't think it a campy ring but it fits and it's a 50 cool
cheers thanks for the help
cheers :beer:

[Bill Bove]

Fixed Bro, living down here in flat florida i found that with an 11-23 ten speed cluster i never used the 11 or 12 with a 52 tooth big ring so i switched to a 50, same thing with 42 inner ring, i never touched the 21 or 23, swapped that out for a 44 tooth and now i'm using the whole cassette. i guess it's a semi-compact.

[Fixed]

bro what fun i took the 53 off put the 50 on easy one link out ..
50x17 now a little better i think thanks shock treatment for the ring
cheers merry christmas or whatever
:beer:

[Fixed]

Fixed Bro, living down here in flat florida i found that with an 11-23 ten speed cluster i never used the 11 or 12 with a 52 tooth big ring so i switched to a 50, same thing with 42 inner ring, i never touched the 21 or 23, swapped that out for a 44 tooth and now i'm using the whole cassette. i guess it's a semi-compact.
bro you shoud market that as fla gearing imho
cheers :beer:

[J.Greene]

bro you shoud market that as fla gearing imho
cheers :beer:

Bill still has too many gears for FL gearing. All you really need (actually you don't fixed) is two gears. Headwind and tailwind.

JG