marius.suiram 

Selling from Cleveland, OH, 44111
Payment: PayPal or postal money order
Price: 60$ shipped
Now: 53$ shipped

bikemig 

Cool rear derailleur. Velobase has the capacity at a max cog size at 36 teeth but I'm skeptical of that claim given that this is an old school short cage rear derailleur:

https://velobase.com/ViewComponent.as...54548&Enum=108

But I could be wrong.

marius.suiram 

It is written on the derailleur the max cog size 36 teeth.

Kuromori

Campagnolo somehow went from 14-26 on the 1012 Gran Sport to 13-36 on the 1020 Record, which switched to an offset pulley cage, of which this derivative of. 36 seems like a stretch by all measures, but if there was any way for it to clear a 36, it was probably as a 1x so that the chain would pull the guide pulley away from the cogs in the highest gear. Back of the envelope calculation, if you add the length of the derailer hanger, the length of the derailer from pivot to pivot, and account for the cage with low chain wrap, that just barley puts you in the neighborhood of 36t. However, the 1020 Record increased knuckle to cage offset which would have helped it clear larger cogs because it would not have to swing in and up as much, a feature that seems to be missing on this.

marius.suiram 

Bump

BlueDevil63 

AFAIK the numbers on the back of this and other derailleurs don't mean what a lot of people think. I believe the '36' indicates the maximum "wrap" capacity of the derailleur. It is something like the max of this equation (chainring max + freewheel max) - (chainring min + freewheel min). No way this derailleur can handle a 36 tooth freewheel cog.

Kuromori

"13 a 36 dientes" literally means "13 to 36 teeth" and I don't see why wrap capacity would be given as a range. There's no such thing as a minimum wrap capacity. I can't say for sure what it's referring to, but you find the similar stamping on Campy Rally and GTs except it's "13-36=36-54." They clearly have a higher wrap capacity, but I doubt it's 54, and it still leaves the 36 a mystery if it isn't what it appears to be. A ~45mm short cage is lucky to have ~25T of wrap. 36T wrap is more like what you could get from a ~75mm medium cage.

Kuromori

NR was improved in pretty much every way. I think the knuckle to cage offset was even greater, and it had an offset pulley like Record. However, I think NR was always offered as a double unlike Record may have been offered as double or single, same as Gran Sport, which is why a 1x max cog rating might be relevant. It can't achieve that as a double because the cog clearance is gained only when there is minimal chain wrap (big-big).

Bad Lag

DE 13 A 36 DIENTES = "from 13 to 36 teeth". This appears to refer to the compatible cog sizes.

In the high gear position, it cannot handle anything bigger than a 13 dientes.

In the low gear position, it cannot handle anything bigger than a 36 dientes. This is hard to believe but may be possible. My Nuovo Record works with 28T cogs, but 36,...? You'd have to try it or carefully measure at the geometry.

It might also imply 23 dientes chain wrap but that is not clear to me.

BlueDevil63 

There is no way ever, in any configuration, that an NR or SR derailleur (or the Zeus derailleur under discussion here which is an almost exact copy of the Record/NR derailleur) could handle a 36t freewheel cog. These derailleurs have been around for 50 years now. Their capabilities are well understood. So if the numbers refer to cog sizes they are either ridiculously wrong or they don't refer to cog sizes.

noobinsf 

The velobase entry that bikemig links to above has an exploded diagram, and it mentions that use of cogs from 13-36 teeth is possible. "Permite utilizar coronas desde 13 a 36 dientes."


[Image credit Velobase]

unterhausen

I thought it was well established that derailleurs like that could only clear 28 teeth, but I would love for someone to try a 36 tooth cassette. I sold mine, so I can't do it

BlueDevil63 

Many have tried. In unmodified condition some can get a 28t and maybe a 30t it rare situations but a 36t just physically won't work (cog hits top jockey wheel).

m_sasso

Anyone tried the derailleur with a Road Link? Or any type of derailleur extension? My guess is the 13 -36 capacity is dependent on the length of the derailleur hanger.

rootboy 

Blue Devil 63 is correct on this.
If I can find the documentation to support this, I will.
But life is short.

Kuromori

If you can get it to clear a 36, then it will be on a 1x with the chain just the right length to maximize clearance in the biggest cog. How many of those people tried to set it up as a double? To get maximum clearance for the cog, it has to be in big-big, so it wouldn't produce maximum clearance in small-big on a double.

repechage

Correct.

marius.suiram 

Bump

marius.suiram 

Bump

marius.suiram 

Bbb

marius.suiram 

Bump