Etap 11 speed rear der maximum size cassette

Hi Folks,

I run etap 11 spd and zonda wheels on my road bike and currently have a 11-26 cassette that is on its 6th and probably last chain.

I do not see the use of a 11-28 as they take the 16 tooth cog to make way for the 11 cog (resulting in a big jump from 15 to 17). I understand some riders prefer having a 11 speed cog as it affects the chain line. Fine. I am not a sprinter and do not need a 11 cog. I was thinking of swapping hub body and getting a Campagnolo 11 speed 12-29 so i can have all my gears plus a nice bail out for horribly hilly places.

Question: what is the maximum cog that a regular (short case i think) etap rear derailleur can take?

Thanks,

G

Won’t answer your question but instead of a 12-29 Campa you can try a 12-28 Shimano that is very close and keeps the beloved 16th. Only issue: Shimano is mean and only makes the 11 speed 12-28 in Dura Ace (no Ultegra, no 105). So I pay for DA, so as to have a 16th and something shorter than a 25th.

Related question: anyone know of a Shimano hub body compatible 12-28 11 speed cassette ? DA is nice but I feel ripped off every time I buy one (esp. in those current days).

Officially, 28t is the maximum, but I used a 11-30 cassette for months when I was a tour guide in the Pyrénées (I wanted a low gear to ride along slower clients and to still have easy days despite riding >100km / >2000M daily), it worked fine and never had any issues.

The max you can get away with might depend of your specific bike’s derailleur hanger, they are not exactly the same length but on my SuperSix Evo, I think I could have even used a 32. The official maximums SRAM/Shimano/Campy state are sizes they are sure will work across pretty much any frame, but in most cases, it’s a very conservative and safe limit, you usually can get away with a couple more teeth.

One thing though, when adjusting the B-tension screw to move the top pulley to work with a bigger biggest cog, the pulley/cage starts to get very far away at the other end of the cassette, so shifting on the smaller cogs might not be as crisp and fast as a cassette sized to match the geometry of the derailleur. In my case the difference was perfectly acceptable so I think a 12-29 would be even less noticable… but if you don’t need that lower 29t cog, Raphael’s solution might be a better option.

This is a really important point. The capacity to run larger cogs is more dependent on your frame’s dropout geometry than the rear derailleur itself. Given that eTap 11sp derailleurs were designed to also accommodate the WiFli long cage (the parallelogram is the same on both), there’s no design barrier for the 11sp rear derailleur to work with cassettes larger than 28. I’d imagine you could even get away with a 32 so long as the dropout geometry allow. Give it a shot.

Shimano take the 16T but SRAM do not until you go 11-32. If you stay with SRAM you can keep the 16. Shimano on 11-28 go 19, 21, 23, 25, 28.

Gear Ratios:
11-25: 11,12,13,14,15,16,17,19,21,23,25,
11-26: 11,12,13,14,15,16,17,19,21,23,26
11-28: 11,12,13,14,15,16,17,19,22,25,28
11-32: 11,12,13,14,15,17,19,22,25,28,32
11-36: 11,12,13,15,17,19,22,25,28,32,36

Reference:

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Hi Peter. THANK YOU. I wasn’t aware of that - it sure simplifies everything. Best answer yet, if you were local i’d buy you a beer.

Have a great week,

Gustavo

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Ah good to know. Actually I never checked Sram’s offering as I don’t need an 11, and so focused on Shimano to have a 12 start :open_mouth:

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The jump from 19 to 22 is really big though.

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Campy’s 12-29 11-speed cassettes are really nice if you dont need the 11t cog.

12-13-14-15-16-17-19-21-23-26-29

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I may end up considering those but I would need to switch a few wheelsets to Campa FHBs.

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Never seen an eTap derailleur close enough to infirm what you say, but I have regular and WiFli Red and Force derailleurs and the parallelograms are different:

image

image

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I’ve installed both at the shop and at the time, they certainly looked similar enough to assume it was simply a cage swap. I didn’t bust out the rulers.

That being said, the google exercise seems a lot more similar than the mechanical versions you posted.

Best thing to do is try it out.

They indeed look more similar than the mechanical ones. I’ll try and get the ruler out if I remember :slight_smile: