Just bought a department store bike.
I'm already replacing the grip shifters with trigger shifters, and while I'm at it, seems the stock derailleur is criticized for being flimsy/cheap.
Half the reason, actually, is that I just want an excuse to mess with and learn the mechanics, and paying $30-$50 for a new derailleur(s) won't be so bad if I learn something and have fun with it too. I've spent more on a video game... So maybe I don't have to replace the low-end stock derailleur at all, but, I just want to. I'll have a lot of fun and learn something of how the system needs to be adjusted by installing a better one, anyway.
OK, I just bought a schwinn discover, which comes with a stock 7 speed cassette. I don't really see a reason to change that out. There are hills, but it's not that hilly, here in iowa.
The stock rear derailleur seems to be this:
The front derailleur simply says "sr suntour"
If you were to upgrade these, what would you upgrade to?
I'd read that shimano's alivio and deore were their better grades, and they're not that expensive really.
I was wondering which models would be correct?
The stock derailleur is for 34-43 teeth and "long" cage,
so would this derailleur then be a 'plug and play' bolt-in substitution?
and would it be better built than the tx35 that came with the bike, which was accused of thinly stamped and cast plastic parts?
Does that fit, and even if it does, do you have any better suggestions? Is deore better than alivio: and would a '9spd' derailleur work on a 7spd bike? (as I understand it, I can't see the difference-- only that the derailer must have more range to accommodate 9spds?)
Secondly, any meaningful upgrades for a front derailer?
Finally, what's the role of the hanger --except maybe as a spacer, cause it seems some derailleurs don't need hangers?-- and would that need to be changed too?
...like I said, I'm looking forward to learning about the mechanism, by getting in and messing with it :-)
And yeah, I know this is probably money wasted and a pointless upgrade, but like I said, I'll have fun learning to install them properly-- especially while I still have a coworker who knows bikes to help me with it. I'll thank myself later when the knowledge will come in handy.
I treated my entire first car like an educational expense as well-- it didn't need a new transmission or engine but I built them for it anyway and had a lot of fun!