SRAM Red eTap With 11 X 32 Cassette

[apricotwalnut]

32T needs wifli cage but 30T can be regular one

[Jowwy]

I run a 11-40 with Roadlink + Ultegra mid-cage, but I am not sure if the Etap RD will go that far. Let us know if it works!

I run a 11-40 rear cassette on my himod using a sram etap wifi rear derrauiler and road link.....46/34 upfront on sram red crankset. Worked like a dream in the french alps last month

[yinya]

Not sure if the designs are the same, but I have mid-compact on the front and mid-cage force on back. I bought roadlink because for big days I want to run a 36 on the back, but in the end the setup works even without the roadlink. So wifli red could also potentially work straight with 36, potentially depending on the bike...?


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[possibleweenie]

32T needs wifli cage but 30T can be regular one

I am using a Roadlink with a short cage etap with an 11x32 very successfully. I have ridden it and the B screw has A LOT left to go. Actually, it is about 20% wound in. I took the Roadlink out today to test and see if the RD would take the 32t cog without it and with the B-screw completely wound in. Tried it, it clears the 32t cog but the spacing is about 5mm between the cog's teeth and the pulley teeth when placed parallel to each other. It will easily clear a 30t without the need for a roadlink. I am certain, but I don't know how chain wrap affects this, whether the RD can take a 36t just because the B screw has a lot more space to clear.

Not sure if the designs are the same, but I have mid-compact on the front and mid-cage force on back. I bought roadlink because for big days I want to run a 36 on the back, but in the end the setup works even without the roadlink. So wifli red could also potentially work straight with 36, potentially depending on the bike...?

It has been widely known, at least in all my research, that Shimano, Campag and SRAM limit the official supported max. cog size in a very conservative manner so a 36t would be possible if the max. cog size suggested by SRAM is 32t.

As Apricotwalnut mentioned above, a 30T should be OK awith a standard short cage derailleur (I can confirm this) although SRAM says you can only use a 28t max.

Also, yes, the length of the RD hanger of the bike DOES affect max. cog size you can use on a bike/RD combo.

[possibleweenie]

OK. Quick update.

I can see now why people often say you need Wifly RD to work with 32T and above. I did not particularly understand what the chain wrap capacity is until recently and I can see why you WILL need a Wifly RD if you are running 2x11.

If you are running 1x11 like me, chain wrap is not an issue. With the Roadlink, I am certain I can clear a 36t at the back and maybe even a 40t cog. Since the only difference in chain length the RD needs to accommodate is the difference between 36T to 11T (25 teeth, or 25 links in the chain) the standard short cage RD will be able to manage that. Why? Because you can do 53/39 and 11-28 easily. The biggest difference of chain length the RD will need to manage is 14T at the front and 17T at the back meaning 31T or 31 links in chain in total. If you run 1x11, 10-42 may just be possible (32T difference) if the RD upper jockey wheel can clear the 40T with the help of a Roadlink AND if your frame/hanger allows.

Apologies if I confused anyone here.

[Syver]

OP, Everyone who said it won't work is correct. I just tried putting the 11x32 cassette on my regular cage Red RD, and it did not work. I put the B-Screw all the way out and the teeth on the cassette and RD pulleys were pretty much bumping each other.

The 28t cog worked fine.

Same result here. Need the long cage derailleur with the 11x32 cassette on 2017 Canyon Ultimate CF SLX

[g32ecs]

Im not sure how old this thread is but I have a project coming up -

Same situation, I have a short cage RD from the 1st gen eTap that I'll be using on a gravel build. Since the gravel routes are arent too severe, I can probably get away with a 28t, 50/34 front, however, I might be wrong.

What's the cheapest way to accomodate a 32 or 34t now without breaking the bank?

I found this on eBay, not sure if it's a simple swap of the cage. Also not sure if this one works with the 1st gen eTap

https://www.ebay.com/itm/142508076274

[spdntrxi]

you can try a roadlink type of thing first.. It will be cheaper then a new cage. (you might need a new chain too)

[g32ecs]

you can try a roadlink type of thing first.. It will be cheaper then a new cage. (you might need a new chain too)

You just saved me $. Thank you sir.

My other thought was probably use a 30t granny tooth cassette. I do not live in a mountainside area, but lots of short and steep paired with a windy climate

[spdntrxi]

you can try a roadlink type of thing first.. It will be cheaper then a new cage. (you might need a new chain too)

You just saved me $. Thank you sir.

My other thought was probably use a 30t granny tooth cassette. I do not live in a mountainside area, but lots of short and steep paired with a windy climate

I used one (roadlink) in the shimano 9000 world and it worked... for etap had ceramicspeed OSPW.. but that is not exactly cost effective

[alcatraz]

If you can't shift between the small cogs with a road link you can either go back to 28t (ideal shift quality) or experiment with different pulley wheels. The trick is to minimize chain deflection. Narrow/wide tooth pulley without float can help. It's somewhat of a ghetto mod but for recreational riding it could be fine. Not for racing.

[addictR1]

I’m using a short cage with 11/32 and with B screw in all the way, it has just enough clearance.

[spdntrxi]

ahhh that's tight. it will vary by frame. All my bikes would run 30t, but not 32t, when I had etap short cage.

My current etap bike , I bought the wifli.. so no issues with 32t.

[addictR1]

ahhh that's tight. it will vary by frame. All my bikes would run 30t, but not 32t, when I had etap short cage.

My current etap bike , I bought the wifli.. so no issues with 32t.

Yea it’s very close. Luckily the T1SL cleared it.

On my TMR02, I was also able to run the 10sp red short cage with 12/30t.

So I think it does depend on the frames.

[pdlpsher1]

I’m using a short cage with 11/32 and with B screw in all the way, it has just enough clearance.
]

The issue with using a short cage is lack of chain wrap capacity. Can you run small small and big big gear combinations without the chain being too tight or too loose? It’s dangerous if you accidentally shift to big big and the cage is stretched beyond its limit.


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