duongrn

Hi all,

I am trying to match the right derailleur with the cassette for the Force brand.

The SRAM sites lists a Force PG-1070 Cassette with a 11-32 ratio.

Does that mean I can just use a SRAM Force Rear Derailleur?

Thanks in advance

dave35

If SRAM make a long cage Force, then go for it (pretty sure they don't). If not, you could use a long cage Rival or Apex RD, which should work just as well. Contador has used an Apex RD in some mountain stages so he could use a 32 cog with a standard road double.

However, you might be able to get it to work with careful adjustment; manufacturers usually spec things very conservatively. The main problem then will be chain wrap -- you might find some gear combinations unusable due to slack in the chain with the short cage because of the tooth difference between small/small and big/big combinations, especially if you have a wide-range double or a triple on the front. If you shift properly, this shouldn't be an issue.

Werkin

Do you have the cassette and are trying to match a dérailleur, or have the dérailleur and seek to match a cassette? As mentioned previously if you have a 32 low gear, choices are limited to Rival or Apex medium cage. If you have the Force dérailleur and want to use the max low gear match, Shimano's Tiagra 12-30 is compatible.

duongrn

I have neither and tried to find the right combo. I have a Force shifter. I was hoping to be able to get a rear derailleur that I could interchangeable swap a 11-28 cassette on a rear wheel with another 11-32 cassette on another rear wheel to make things simple if I need the extra gears. I'd liked to stick to the same models, so I know that there is a Force 11-28 and a 11-32 cassette. It sounds like the best thing to do is to get Rival or Apex derailleur for this.