Front derailleur is skipping a gear &/or the chain comes off when shifting:
1) Wiggle the derailleur. Pins worn (DR wiggles)? Excessive chain wear? Get all info off the DR, incl. clamp size (some Center Posts have larger diameters) and replace.
2) If the derailleur is sound, then check:
a) Height on the Center Tube. It should be low enough to clear the outer ring without binding the chain.
b)The outer part of the derailleur should be set in a staight line with the outer chain ring. Note: The rear end of the front derailleur is wider that the front with the extra width pointing to the inside gear next to the back rim.
c) The action of tightening the clamp can cause the derailleur to swing inward throwing the derailleur out of line again.
d) Be sure the clamp is tightened so it is completely secure. If it isn't, shifting just one time can alter the adjustment.
MAKING AN OFFER? "I CAN OFFER YOU $225 FOR YOUR BIKE.": Too much work & parts went into the bike to let it go for that. After all, it's a USA made Trek. You'll have no problem finding a Made-In-China Trek for $225 or less.
The best approach would be to come see, ride, talk, make offer. At least you'd know what you were getting. I could accept your offer, say nothing, sell you nice-looking piece of junk & you might not know the difference.
My advice: Get to know the person selling, get bike's history. In the process they might discover what a nice person you are & make a better deal than expected.
BRAKE SHOES ROTATION: Pads tend to wear unevenly with the back-end getting the most wear. Following an X pattern swap them around, front to back, after about 1/3 wear is showing. This extends pad life, makes braking more effective again.
CRANKSET INSTALLATION: When pressing on crankset, i.e., tightening down the nuts, measure to see there's an equal distance from arms to chain stays on each side. Be sure your bike mech does this. If they're not close to being equi-distant, the axle extends too far out (or not far enough) on one side or the other. Replace.
A QUESTION OF QUALITY: Lew, I can tell from your site you're willing to share information and I've learned already. Thanks. I think maybe we're birds of a feather. I don't think people realize everything we buy is being made in China, and, I don't believe they are our friends.
I would like your opinion on Rigida rims. I think they are OK and are on my rider. I can't see going overboard for light alloy. My theory is, take a few pounds off around the waist and save a 1000 bucks on carbon fiber.
Answer: Your Rigida rims were made in Japan. Bike stuff made is Japan can usually be trusted to be of excellent quality. The reason they cleaned up good is the quality of the chrome. Weinman (Belgium) is another high quality rim mfr. Germany, Austria, Switzerland, France, England, Canada & Taiwan produced good bikes & parts. Like the commercial for the old coffeemaker "you get what you pay for". As with the USA, they have mfg. standards.
With "Made in China" you DON'T always get what you pay for in a bike. Take one apart & there's usually something substandard, hidden. (Bearings & races serve as an example. Tin used as an alloy is another.)
When USA mfr's started importing bikes from China, parts were sent there, they assembled. We re-imported. Gradually, more of the bike was made there. Get an early "honeymoon period" bike, the frame will have been made in the USA, etc. Just as with automobile mfg, parts suppliers are key to quality.
Bike Painting Procedure - Revised:
1. Make sure that you know exactly how to put back the bike when you take it apart. Take pictures and make notes. Be organized when taking your bike apart.
Clean the bearings and internal mechanisms as you remove them. You will have a more thorough job in greasing them when reassembling the bike.
2. Use a degreaser (TSP in 1 qt. jugs available at Sears) all over the frame. Further degloss by rubbing out old paint with a 0000 Finishing Grade Steel Wool pad. Use 220 sandpaper to smooth out rough spots. If your bike has a carbon frame, do not sand the carbon.
Repainting your bike is also a great opportunity to fix dents. Use knifing putty to fill in dents. Sand it down afterward.
Consider using matching touch-up to cover small nicks and scratches. Sand after quick-dry Use degreaser again.
3. Put on painter’s tape on pieces that you don’t want to be painted or should not be painted. These include the bottom brackets, the parts with the threads and the bolts themselves (but it is better to have them removed). Cut tape to size to fit over decals to be saved.
Use a degreaser all over the bike (fingers leave oils behind).
Dry (I use air-spray nozzle with my compressor). You are ready to paint.
4. Use an old and sturdy coat hanger to hang your bike from the head tube where you have a 360 degree access to the bike. (I've installed brake-stap hangars on the inside-bottom of my garage door, bent old spokes into hooks to use as hangars.) Hold frame with clean, dry rag in one hand while hanging.
5. Put on your protective gear.
6. Spray on clear primer (Adhesive Promoter available at Auto Zone) in thin, even coats, starting from the joints and the bottom bracket. Cover thoroughly during each coat but not heavily in any one place.
7. Once you’re done with the primer, within 5 minutes follow with 2 color coats, then 3 clear coats. Carefully remove tape on decals before applying the clear coats.
DO NOT ALLOW PAINT TO DRY BETWEEN LIGHT COATS. THERE'S NO NEED TO SAND BETWEEN COATS! Properly applied, there will be no runs.
8. Let paint harden for at least a couple of days to a week, then wax. Reassemble bike being careful not to unnecessarily touch or put finger pressure on the surface.
9. After the paint is cured for at least 30 days, you can rub out overspray with 0000 Finsihing Grade Steel Wool followed by a mild rubbing compund (I use White's), then wax again.
Spray painting technique: Release spray button at the end of each stroke.
I always try to paint the same color as original. Carry the fork to the store when buying paint in order to get the best possible match. If I'm repainting to a different color, I strip the frame to bare metal, sand it down and degrease before starting to paint, again without sanding or allowing the paint to dry between coats as outlined above.
Simon: I rewrote tips from the link you sent me, using his procedure as the skeleton so if credited I might be accused of plagiarism. My motivation for doing so was your comment about the messiness of repainting and his recommendation to let coats dry and sand between coats. Make sure paints of different brands are compatible with each other by comparing the chemical ingredients, do not mix lacquers with enamels.
My proven procedure of laying one coat on top of another avoids "lifting" the previous coat. See instructions on the can. If you somehow fail to keep painting within the time allowed for the next coat, allow at least 7-10 days drying before attempting to proceed (the longer the better). With paint that is fully dry, light sanding is OK. I prefer 0000 Finishing Grade Steel Wool.
Q: Lew, I'm going to invest in a few basic bike tools: crank-arm puller, freewheel removers, chain remover. What do you recommend? A: I've found some USA tools sold in the bike shops around here. Bike-specific tools like those you listed, thin race tools, chain tools, etc., are best bought at bike shops. Stay away from discount stores for bike tools of any kind. However, K-Mart carries the Craftsman line which I can recommend for your other standard tools. As to made in China tools, not much can be done. As with everything else, there's little choice.Wear out, replace.
This site offers a lot of other repair tips as well.