2007-07-12 05:31:45 · 5 answers · asked by muchi_mac003 2 in Sports ➔ Cycling
Considering its an 8 speed, you aren't going to find anything new and high end, so I'd try and pick up a Dura-ace cassette (I've seen $75US - good price). If you can find one that is 8 speed, it probably won't cost you too much. If not, settle for Ultegra. Again, won't be as much as 9 or 10 speed. Make sure it is a Hyperglide cassette though.
SRAM only has the PG-850 which is only okay. Not really a big upgrade
Stay away from campy unless you want a camy drivetrain - which will break the bank.
Might want to consider replacing the chain too - they wear at the same rate.
Good luck.
2007-07-12 06:30:27 · answer #1 · answered by ct 4 · 1⤊ 0⤋
I agree with the last answer. Shimano has discontinued most of the 8 speed systems years ago. E-Bay is a good place to go for 8 speed group stuffif you want to stick with 8 speed. I bought my buddy a set of Dura Ace 8 Speed STI shifters on e-bay for really cheap to replace his Dura Ace down tube 8 speed shifters. They were in like new condition because the owner had them stored for years in a box in his garage when he upgraded to 9 speed Dura Ace. Many believe that 8 speed systems were the most durable systems Shimano ever made. Anyway, if weight is a concern, a new wheelset will do more for you than anything else. Neuvation M28 Aero is a good quality, relatively- light wheelset that won't break the bank and the customer service is second to none. check out www.neuvationcycling.com. You'll be glad you did.
2007-07-13 07:12:56 · answer #2 · answered by Terrence B 7 · 0⤊ 0⤋
Cog Spacing, Each cassette is a given width to put 8 gears on it each gear can be __mm from the next gear, as you increase the number of gears 9, 10 or 11 the spacing becomes tighter so each gear must be narrower. Along with this each indexed shift must move the distance of the gear spacing to move the chain correctly. This is why the shifter indexing MUST match the cassette gear count. Now you enter problem #2 the shifter and derailleur, the two must be compatible for cable pull, different brands use different pull ratios. (cable pull distances per index) Stay with the 8 spd chain, the sora shifters will index OK with a 105 9/10 derailleur, follow the instruction sheet to set it up correctly.
2016-05-20 15:16:49 · answer #3 · answered by ? 3 · 0⤊ 0⤋
Anything 8 speed and Shimano should work. However, I really wouldn't spend much money on an upgrade like that. You will wind up spending more than you need and not get much value out of it. You won't save much weight and it will likely not shift much better.
2007-07-12 08:40:03 · answer #4 · answered by Jay P 7 · 0⤊ 0⤋
unless you have worn your cassette out, stick with it as the cassette does not effect the how well your gears change (it is a weight issue)
Save up the money to replace the shifter, derailleur and cassette to 9speed shimano 105 (or campi or sram equivelant)
2007-07-12 08:51:15 · answer #5 · answered by g fh 3 · 0⤊ 0⤋