Biggest cassette w/ Red derailleur?

[T.J.]

Like the title says, just curious .
Thanks

[weaponsgrade]

I run a 28 with mine. Tried a 32 once but it didn't work.

[bargainguy]

SRAM says the new WiFli will accommodate an 11-32 cassette. I have not tried this myself, though.

http://www.sram.com/sram/road/products/sram-red-wifli-rear-derailleur

[ptourkin]

Wifli (Apex and Rival) has always accomodated a 32. It now comes branded as Red and Force too. I run a 32 on my cross bike (Force/Rival) for trail riding no problem.

[sparky33]

Short cage Red or the medium cage wifli Red?

The regular short Red der has oodles of clearance on a 28. I bet a 29 and possibly a 30 might work.... Maybe an IRD or Miche cassette?

[Bruce K]

I believe that SRAM says 28 tooth is the max for "standard" Red RD's.

As others have said, bigger with WiFli.

BK

[T.J.]

Thanks for the replies gentlemen. Headed to Ga next weekend for a training camp weekend. The six gap route has 11,200 ft of climbing. 39/25 sounded like noooo fun . Just put a 27 on and seems to work fine

[vqdriver]

Fwiw it runs fine with my campy 13-29

[cash05458]

doesn't sram do a 52 rear, 11 front for the cool crowd not in any hurry and wanting to show those slow twitch muscle fibers off in front of the cafes ?

[T.J.]

doesn't sram do a 52 rear, 11 front for the cool crowd not in any hurry and wanting to show those slow twitch muscle fibers off in front of the cafes ?

Is your post not supposed to make any sense?

[Pete Mckeon]

:mad: sorrydoesn't sram do a 52 rear, 11 front for the cool crowd not in any hurry and wanting to show those slow twitch muscle fibers off in front of the cafes ?

[TheWolfsMouth]

Most standard short cage rd run up to a 28

[wbrownie]

Yep. Have run a 28 but usually a 27.

Have run an Apex derailleur with Red shifters and it works great if you want to go to 32.

[fa63]

I run Red with a 53-39 front and a 11-28 cassette, works like a charm. For grins, I tried putting a 11-32 on there once and tune the RD for it, but it wouldn't work. I suspect a 30 tooth might work; Shimano makes a Tiagra-level 12-30 10 speed cassette.

[merlincustom1]

This is not a criticism of the OP, but shouldn't Sram have this info on their website somewhere? I don't own their products, and have always found answers to these types of questions on the Campy website, for example.