What front derailer do I need? I am converting from an STX 42-32-22 with a front derailer STX FD-MC32 on an TREK 930 7 spd
1451175
your current derailer should work, you may have to move it up a bit on the frame, but should be no problems
880838
Mainly asthetics. Both are 2x1 activation and Shimano compatable. Should be interchangeable.
1363923
First, I don't know. I have found calling Shimano Customer Service line to be very helpful when I had the same question. But in my experience as long as the number of speeds is the same, and the largest/smallest sprocket size is the same, you should be OK. Again, you should call Shimano to confirm. It is based on the derailleur, and in my case, I discovered from Shimano customer service that I was able to keep my same derailleur when I made my switch.
1734515
The Shimano TX55 bolts onto a derailleur tab on the back axle dropout, Shimano spec reports the unit is compatible for up to 8 gear clusters. Should work on your Trek if the trek has a threaded hanger tab on the right rear dropout and is 8 gear for less back gear cluster.
1550952
Well, what can I say to help, make a few phone calls to bicycle shops in your area. But as long as it relates to a seven shifting options for you, I can't see any problems. My old 1994 ROSS Mt. Olympus 21 speed mountain bike, it work for me. I replaced both shifters, the original ones just tired out, yet my derailleurs are still going strong today. My opinion, they work better how the shifter buttons relate on the handle bars. Once I got them lined up & running they work great. How was that?
53860
As important as verifying that it has square bottom-bracket fitting, which it likely has, is making SURE the gear-teeth/ratios numbers match..whatever your old one is, it will create problems and more work if you try to fit one smaller or larger number of teeth, the front derailleur will not be in the right position and adjustment for a start...if your largest cog is 42T, you will be easier off with another with 42T, best to get the middle gear the same such as 34T or 32T, as well.
660801
Yes, currently using it on Trek 7.2FX with 8speed. Works identical to the original Shimano C102.
9440
I had an ultegra 11-28 and replaced it with a 12-30 from Amazon to get a slightly lower climbing gear here in the mountains. The chain fit; only some minimal rear derailleur adjustments were needed. I have been riding that cassette for about 1000 miles now with no problems. Shifting is fine. LBS did the installation and adjustment for $6.
803923
It depends on the size chain rings that you have. Rear derailleurs are designed to be able to hand the maximum difference in the number of teeth on your entire drive train. Total Difference = (Teeth on Big front chain ring + teeth on largest cog (ex: 28 above)) - (Teeth on small front chain ring + teeth on smallest rear cog (11 in your question). Then you need to look up the capacity for your specific derailleur. Make sure to match the right derailleur size and model year as they change. Good luck.
1706952
NO! No, it will not work. The SRAM shifters only work with SRAM rear derailieurs, because the ratio is 1:1 vs Shimano 2:1. The front derailieurs for both systems are interchangeable as they use the same ratio.
2210345
I'm not sure about he SIS but I would think so. I don't know the model of my front derailleur but it has two gears as my bike is a 14 speed and it worked great for me.
139039
I think it depends on your cassette. It's meant for 9-speed cassettes. On Shimano's website, it's listed under the mountain bike parts. The Shimano road bike derailleurs are the Dura-Ace, Ultegra, 105, Tiagra, Sora, 2300 and 2200 series.
1314380
it's a front derailleur... not a rear. that said, I bought this and use it with my 1997 Specialized stumpjumper which has an 8 speed cassette. works great.
610168
I recommend doing some reading. Short answer is they allow for different big big and small small gear combinations. Look here for a good explanation. http://forums.mtbr.com/drivetrain-shifters-derailleurs-cranks/when-use-long-cage-vs-short-cage-derailleur-205890.html Figure out what gears you plan on running up front and in back and then choose the appropriate cage per manufacture recommendation. I hope this helps
883646
It will work with Shimano 3x7 front derail. Definitely index shift. I have this shifter and it works As good as more expensive models.
859512
28 isn't much more than 26... it only needs 2 more links of chain. same derailleur should be fine in my opinion (used to work at a bike shop) but if you shift to the LARGE chain ring in front and the 28 cog in back (a gear you should NOT be using anyway due to extreme chain angle) then you may find your chain is too short and the deraileur arm on bottom will be pulled really far forward. When you change cogs, if your old chain is really worn (1000's of miles riding), it's a good idea to get a new chain too, and a new chain would be sufficiently long. you'll need a chain tool to cut it to length though (again make it just a little longer than your old chain).
1400519
The 3 speed had an adjuster. The 7 speed adjuster should be on your bikes rear derailer.