I have a Trek 820 Sport, everytime I try to shift from 2nd to 1st my front derailer will stay in 2nd. My cables are taut and i can shift to 3rd fine. I tried adjusting the low gear limit stop screws but it still doesn't shift to 1st. Please help.
2007-06-27 15:42:19 · 5 answers · asked by Anonymous in Sports ➔ Cycling
There are some mistakes in some of the answers (no offense to anyone).
Here is how to do a front derailler adjustment from start to finish:
1. Let all cable tension out (undo the screw holding the cable)
2. Make sure the derailler is straight, by looking from the back of the bike and align to the chainrings. Also verify the height is correct.
3. Set the lower limit, so it clears the chain in the lowest gear by about 1-3mm.
4. Screw in the adjustment screw on the shifter (barrel adjuster), and pull the cable hand tight with needle nose pliars, and fasten it with the screw.
5. try shifting to ring 2. If it doesn't go, tighten the cable by unscrewing the barrel adjuster until it goes smoothly. Check your range in the middle ring so there is ideally no or little rubbing in the extreme gears. Rubing in low - too much chain tension, rubbing in high too little.
6. Lastly check the upper limit when in high gear.
This is always best done as a process - good luck!
2007-06-28 03:59:13 · answer #1 · answered by ct 4 · 0⤊ 0⤋
hi,
you cables could be done so they will stick in the caseing when shifting down to 1st.
or try this:
1. put your gear into your third sproket (front sprokets)
2. don't pedal or anything just shift to 1st and check for slack in the cable.
3. if their is no slack loosen the front derailer cable screw and pull on it until it isn't slacky then tighten it.
4. after that your derailer should have enough tension to pull it into 1st gear in the front.
----if their is no slack this can lead to dirty guck in your spring so clean out the front derailer.
also if thier is no slack it can just be sticky cables in the caseing which i reccommened bringing it into a bike shop.
2007-06-27 22:56:36 · answer #2 · answered by Nick 2 · 0⤊ 0⤋
For one thing be sure your back derailer is on the lowest sprocket (biggest one in back) when shifting to the smallest crank sprocket. That is the only way you should ever use the smallest crank sprocket when using a triple crank set up. The torque you generate with the little sprocket up front will twist your chain links and more importantly BEND the other sprockets on your cassette. (and probably bend the cage on your front derailer, and cause shifting problems)
Get a single speed mountain bike, and you'll never shift wrong ever again. Get a 29er and laugh at bikes with 26" wheels.
2007-06-27 23:05:02 · answer #3 · answered by wise1 5 · 0⤊ 1⤋
Check the gears themselves they might not be catching when you pull the cable to 1st.
2007-06-27 22:52:44 · answer #4 · answered by Belgariad 6 · 0⤊ 0⤋
one of the screws there is the word high, open it till the gear goes down smoothly and will go to all 3 gears
2007-06-28 06:39:43 · answer #5 · answered by G-T Rider 3 · 0⤊ 1⤋