Campy Nuovo Record RD: 30th Cog possible?
09-17-11, 09:36 AM
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Campy Nuovo Record RD: 30th Cog possible?
I know the max cog size is stated at 28th w/ 26th being the "ideal". I was wondering if anyone has run a 30th or larger and how it worked out? Also how to go about it? Just slide the rear wheel as far back as possible?
The crankset is the standard NR 53/42 and the Current freewheel is 6 speed 13-26.
The crankset is the standard NR 53/42 and the Current freewheel is 6 speed 13-26.
09-17-11, 09:47 AM
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Not really. The max. rated is 26, many folks say you can carefully get a 28 to work, but 30 is really pushing it.
Late Super Record is rated 28, many folks say they can get a 30 to work with that.
If you had a really small front difference, you might have a better chance of getting it to just-barely shift onto a 30, but with an 11-tooth front difference, it's gonna be challenging. Nothing is impossible, but....
Late Super Record is rated 28, many folks say they can get a 30 to work with that.
If you had a really small front difference, you might have a better chance of getting it to just-barely shift onto a 30, but with an 11-tooth front difference, it's gonna be challenging. Nothing is impossible, but....
09-17-11, 11:21 AM
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I'd get a triple
09-17-11, 12:11 PM
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I still have not taken the time to snatch up one of these "triplizers" but not a bad idea
https://www.peterwhitecycles.com/chainrings.asp
I have a SR with no paten date and I have a 28t cog but I am only using a 42/48 up front. not sure it that makes a difference
https://www.peterwhitecycles.com/chainrings.asp
I have a SR with no paten date and I have a 28t cog but I am only using a 42/48 up front. not sure it that makes a difference
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
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09-17-11, 12:32 PM
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That reduced chainring differential definitely can help, because it enables you to optimize chain length, which is part of the trick in forcing a rear derailleur to accept a larger cog. One can make a nice half-step w/ 46-42 / 13-30, or 12-30, if you insist on a tall top gear. (46/13 = 50/14 = 96 gear-inches, which is all I carry on the Bianchi.)
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
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09-17-11, 02:18 PM
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I used a 30 tooth once on a 2 week tour with my NR rear and a 42/49. It didn't like it, but it would work. As far as 28s, been running them exclusively with NR since the 70s.
09-17-11, 04:04 PM
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Not really. The max. rated is 26, many folks say you can carefully get a 28 to work, but 30 is really pushing it.
Late Super Record is rated 28, many folks say they can get a 30 to work with that.
If you had a really small front difference, you might have a better chance of getting it to just-barely shift onto a 30, but with an 11-tooth front difference, it's gonna be challenging. Nothing is impossible, but....
Late Super Record is rated 28, many folks say they can get a 30 to work with that.
If you had a really small front difference, you might have a better chance of getting it to just-barely shift onto a 30, but with an 11-tooth front difference, it's gonna be challenging. Nothing is impossible, but....
Even with period Campy dropouts, my experience has been that while NRs are rated for 26 max, it can be a challenge to make more than a 24 work at all.
09-17-11, 04:55 PM
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I'm running a 24t large cog right now, and 26t is the largest I can get to work the way I expect it to work. The NR is just not designed to handle a large cog.
09-17-11, 05:54 PM
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Just double checked mine Fender 1. I was mistaken. It's a 13-25 I've got on my Moto. (25? I guess I haven't actually counted that freewheel since I got it.)
09-18-11, 09:48 AM
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Dang, somehow I've been able to pull off a 28 on most my bikes since 1972! The Carlton is even running the Campagnolo triple. A 14/28 Suntour is my standard freewheel.
09-18-11, 11:47 AM
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If you use a Suntour RD the shift problems all magically go away.....
09-18-11, 12:14 PM
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I meant to say it can be hard to make a 24 work well. With old and $$ parts I don't like to have them work and be draggy, work and make excess sounds, or work and not be easy to shift. With 26s and 28s, I don't consider the operation optimal, so I build the bike a different way. Bottom line now is that I want lower gears than I can achieve with an NR, so no more NRs are in use on riders. On the vintage Masi, yes, but not on riders - and the Masi runs a 13-23, perfectly.
09-18-11, 12:20 PM
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09-18-11, 06:14 PM
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There's function, there's aesthetics, and there's emotion. Probably need at least 3 bikes to cover all three!
09-18-11, 06:19 PM
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What shift problems are you talking about, as I have zero shifting problems with my NR rear derailleurs? I have used Suntour, Shimano, and Campagnolo NR/SR and find NR/SR to shift as well or better than the others. NR is both beautiful and functional.....
Last edited by Capecodder; 09-18-11 at 06:39 PM.
09-18-11, 07:23 PM
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I still have not taken the time to snatch up one of these "triplizers" but not a bad idea
https://www.peterwhitecycles.com/chainrings.asp
I have a SR with no paten date and I have a 28t cog but I am only using a 42/48 up front. not sure it that makes a difference
https://www.peterwhitecycles.com/chainrings.asp
I have a SR with no paten date and I have a 28t cog but I am only using a 42/48 up front. not sure it that makes a difference
"TA used to make a tripleizer chainring for this bolt circle (144) but no longer. And we have no more."
09-19-11, 08:05 PM
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Hey, I'm not dissing the NR; I have no complaints about mine. I came late to the party; they were unobtainium for me back in the mid-70's when I was a teenager and were then still considered the holy grail; since then I've partaken of the Suntour Cyclone koolaid
. But my NR applied to a 13-21/53-42 combo leaves nothing to be desired, and looks great. So I'd have to agree, the NR on my FrankenCilo is satisfying all 3 requirements, but still leaves a little room for appreciating my Cyclone equipped Moto GJ and my Shimano 105 SIS equipped Versailles.
. But my NR applied to a 13-21/53-42 combo leaves nothing to be desired, and looks great. So I'd have to agree, the NR on my FrankenCilo is satisfying all 3 requirements, but still leaves a little room for appreciating my Cyclone equipped Moto GJ and my Shimano 105 SIS equipped Versailles.
