Forums

Mountain Biking - Sram PG-950 9 speed RD question.

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.

PDA

View Full Version : Sram PG-950 9 speed RD question.

craigcraigcraig

12-30-09, 04:58 PM

When I bought the rear wheel I am using the guy gave me the 9 speed cassette that was on it also.

http://www.sram.com/en/srammountain/cassettes/9speed/pg950.php

So I am thinking about making my bike a 1x9 for a bit and curious as to what works/doesn't work. I have a gift card to Jenson so something from there would be cool. Out of these choices are there ones that work and ones that don't? This is my first hoo rah with gears so pardon the noob nastyness. These say 9 speed is there a superior or anything to watch for?

Shimano LX
http://www.jensonusa.com/store/product/RD604A01-Shimano+Lx+Rd-M580+Rear+Derailleur.aspx

Sram x.7
http://www.jensonusa.com/store/product/RD706A00-Sram+X7+Rear+Derailleur.aspx

Sram x.5
http://www.jensonusa.com/store/product/RD288A00-Sram+X5+Rear+Derailleur.aspx

Thanks all you goons.

24/7biker

12-30-09, 07:22 PM

if you want to use either of those sram rear derailleurs you will need to use sram shifters with them.

electrik

12-30-09, 08:15 PM

Yeah, the sram x.# series RD requires you to purchase the sram shifter, the cassettes are mostly (all?) interchangeable same with the 9-speed chains. The
8-speed stuff is getting harder to come by, so 9-speed might be your only choice, it isn't automatically superior aside from the extra cog.

craigcraigcraig

12-30-09, 08:21 PM

but with a himano derailleur i can use a sram shifter? or i need a shimano one as well?

dminor

12-30-09, 08:33 PM

Shimano derailleur can be actuated by either Shimano or Shim-compatible (2:1) SRAM shifters (Attack, Rocket, etc). Odd-number SRAM (3.0, 5.0, etc) and Xs (as mentioned above) need 1:1 SRAM shifters.

electrik

12-30-09, 08:34 PM

There are some lower-end sram(attack) shifters which can operate a shimano mech, but the cog indexing won't match if you use the x.# series since they pull the cable 1:1 and shimano rear mechs count on the cable being pulled 2:1

craigcraigcraig

12-30-09, 09:12 PM

ah ha here we go. This is the part i was trying to figure out online and couldn't seem to do it. To make things easier just stick to the same brand and i should be good but if i don't i need to make sure the ratio is correct. Trying to do a cyclocross race on the 16th and i want some gears...

thanks fo da info

electrik

12-30-09, 09:34 PM