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Upgrade RSX 8 sp to 105?(4 posts)

Upgrade RSX 8 sp to 105?owmynads
Sep 19, 2003 7:08 AM
By November, I'll be up to 3K miles on my Schwinn Passage. I got her in March on eBay. The previous owner said there was approximately 1500 miles on the bike, so I know that it's probably more like 6k ;-). The components are starting to make a fuss, and I'm wondering if upgrading to 105 is worth it. What am I getting into, moneywise, and should I replace the whole group, or will the RSX shifters still do the job and work with the 105 system. How little can I get away with upgrading? I'd like to go from a triple to a double, and I've got an 8 sp cassette that's doing just fine. Rear derailleur seems ok. BB and front hub may be shot. Should I replace both hubs at the same time?

Sorry for so many questions, but this is my first real season of training. I was riding a comfort bike last year.

Thanks to all in advance,

-owmynads
re: Upgrade RSX 8 sp to 105?TimA
Sep 19, 2003 8:08 AM
Well, you've got a lot of options. I can't quite tell if you've just got the upgrade bug, or are really having a problem. Either way I'll start with the wheels. If your front hub is shot (maybe just needs an overhaul?), then replace it. I don't see the need to replace the rear as well, the rear will work with a 9-sp 105 system just fine.

Now the BB opens a can of worms. You could just replace the BB and be done. You however mention you want to change to a double, and if you need to get a new bb anyway, it would be a good time to do that. However to change to a double you would need: crankset, BB, FD(?), Shifters, chain and cassette since you'll probably be changing to a 9-sp system. The RSX shifters will work only with a triple 8-sp. In my opinion, by that point you might as well just get a whole new group.

So if you just want to upgrade, I would get a whole new group, but if you just want to keep it running, overhaul the hub and get a new bb. Personally I don't see why anybody would switch from a double to a triple, but then I use the little ring quite a bit.
re: Upgrade RSX 8 sp to 105?Rusty Coggs
Sep 19, 2003 9:21 AM
Your triple front will shift a double,but the rear 8 speed won't work with a 9 speed setup. Much cheaper to stick with 8 speed and replace the front hub and BB. 9 speed doouble 105 would involve shifters,crnkset,BB FD cassette and chain at a minimum, although you could probably just remove the granny ring from your triple and go with a shorter BB spindle to get a double,assuming the bosses for the granny ring don't cause a chainstay clearance issue.
Overhaul before upgradeKerry Irons
Sep 19, 2003 5:37 PM
I doubt things are worn out at this point. You likely need to do some maintenance. Take apart what comes apart, clean it, lube it, and put it back together, properly adjusted. The shifters can be flushed with solvent (like WD-40) and then lubed with something like ProLink or TriFlow. Cables need to be inspected, cleaned, and lubed. If, after all this and things still aren't working right, then consider new parts. Not to rub it in, but my '98 Campy Record is pretty much original equipment with 45K miles on it. An annual overhaul plus adding lube to the shifters a couple of times a year keeps things working fine.