SRAM WiFli

RunDMC

I've been hearing about the SRAM WiFli system, but I'm not clear on exaclty what it is, or what the benefits might be. Anyone know the details?

Thanks,

R

quozl

It's a compact double system but it supports a wider than typical gear range. That's the wider part. The faster and lighter part is the usual we shift amazing and we're really light claims that are always there.

The WiFli derailleur supports up to a 32 sprocket on the rear cassette. So with a compact you're almost at a 1 to 1 (34:32) low gear.

They claim it has a wider range of gears than a standard triple but what exactly is a standard triple? A 53-39-30 with a 11:25 would certainly give a narrower range of gears than a WiFli with a 11-32 rear cassette although it would give a slightly higher top gear.

I think it's aimed at not super fit types who want lower gears and don't want the extra weight, shifting hassle or wider stance of a triple.

I'd made my own version of it using a Tiagra rear derailleur and a SRAM WiFli 12-32 cassette and I love it. I'm exceeding the Tiagra's spec by 2 hence the Wider bit of SRAM WiFli - they officially support 32 teeth sprockets and therefore I'd bet they can even handle a 34

Jawgap

It makes it easier to climb hills.......

GoTilUBlow

I used this with an 11/32 on a 53/39 SRAM force Chainset in the marmotte. Cheaper than buying a compact chainset (just). I found it was ok, the feel in the lever was horrible when changing though. Very spongy. If you have a compact and a 28 you should be fine. Unless you are really struggling, in which case it's a much lighter alternative to a triple.

nak

I got it for a trip to Switzerland, most of the climbs were between 10-20%, so was grateful for it on a couple of days on prolonged steep sections. No shifting issues for me.

Contador and various members of the pro peleton have used it, so it's not just for unfit types.

bog_savage

Where did you get the cassette. I dont see one on sram website

quozl

here it is on SRAMs website http://www.sram.com/sram/road/products/sram-pg-1070-cassette
PG 1070 available here - http://www.chainreactioncycles.com/ie/en/sram-pg1070-10-speed-mtb-cassette/rp-prod55198
or for 6 euros less the PG 1050
http://www.chainreactioncycles.com/ie/en/sram-pg1050-10-speed-mtb-cassette/rp-prod55201

I got the PG1070 12-32. Chainreaction have it listed as a MTB cassette - presumably because they divide cassettes based on largest sprocket size. SRAM call it a road cassette and there's no actual difference between MTB or ROAD 10 speed cassettes.

nak

Got mine from Cycleways - husband works there - SRAM Apex.

Seaneh

If you want an 11-32 cassette and don't want to pay the price of the sram kit and already have a long or medium cage shimano derailluer you can just but a 11-32 Shimano or Scram mountain biking cassette, it will be heavier, but it's not like the thing weights 7kg, you won't notice the difference unless you're a weightweenie.
You will probably need a new chain as well.

bog_savage

Ah yes. Thanks