Forum: Bicycle Mechanics

I was in a shop the other day and I saw some foam for cars that is basically in a pressurised container and when you get a puncture you just fill the tyre with it and it allows you to drive home on the tyre. I was wondering if there is anything similar for bicycles? I don't mind throwing the...

From what I can gleam from google this seems to be measured mounted, but on what width rim?

I may have touch(ed) my chainwheel regularly with my right shoes, in the period before using SPD. The black coating has been scraped off a bit here and there. How can I touch this up - not like to spray paint though...

will a 9 speed chainring work with a 10 speed setup?Thanks as usual

I am using an indexed Shimano End Bar shifter to operate the internal gears of an SRAM Dual drive. Two clicks per shift works really well. I am wondering if there is any way to make this into a one click system - some way to make it skip a click perhaps. I haven't tried to dissect the shifter...

Due to some shoulder and arm issues I have switched from commuting on a road bike to a Cannondale M500 with slick tires. I absolutely love the fit/ride of the bike (more than the road bike). The only thing that I miss about the road bike is the bigger gears. I spend most of my commute in the...

Hi lately I have been finding myself going over train tracks and hearing the rim hit the ground, and today as i was leaving the driveway i heard my rim hit the ground again as there was a small gap from the drive way to the road, and I got a flat. anyone have suggestions how i should fix this?

Recently, I've been working on my old Windsor Carrera Sport, c.1980, getting it back in shape after years of neglecting it. I'm having trouble getting the RD to shift right, though. It used to shift "like butter" back when it and I were young. Now, it doesn't. The bike is mostly stock...

Near the beginning of a ~40km journey home the other day my left pedal crank started making a loud creak with each rotation. I had no choice but to push for home (only had puncture tools with me), and I made it... and found that the nut that holds the crank on had come loose, I could finger-tighten...

Has anyone made a tool to remove the dual air upper tube retainer? The rockshox tool part number is 114.308.299.000. I have determined that the two ends are probably a 19mm nut. Any ideas? I didn't want to pay 30.00 for a tool I would use very little.

Anyone make something like this? I want to pull the cantilever posts from my disc and canti capable fork, but I don't want big holes there. I'd like to know if anyone makes an aesthetically pleasing frame accessory to put in their place.

Today, 1/2 way through a ride with lots of climbing, I noticed a slight thumping kind of sound. It occurs when my left pedal is just forward of top center, and sounds like it's coming from the rear end. Happens in all usable gears on the middle and inner chainring. Where's a good place to start...

Hello and thanks in advance. So my problem is this. I have a small crack in the rear of the frame where the seatpost would insert on my 2003 Cervelo Soloist (alum). I have been reading in this forum about TIG welding as an option but was curious to see what other thought was the best fix. ...

This should be a piece of cake but I am stumped. Maybe someone can shed some light on what I am doing wrong. At 2000 miles thought it was time to regrease the bearings and check things out. Downloaded the diagrams and everything looks pretty simple. Disassemble, clean, inspect, regrease and...

I recently installed a SRAM Omnium crankset using the stock bottom bracket. Everything seems to be fine visually. I made sure to torque it to the correct settings using a torque wrench. I greased all of the threads as instructed by the manual however I neglected to grease the bearings themselves...

Hi. I'm new to the biking world, have found these forums to have a wealth of information, but I can't seem to find a suitable answer for a question I have regarding front derailleurs. I ride a cross bike, and it's got a compact double front crankset (46/34) and it's got a 105 (5500) front...

I have an Ultegra 5-bolt Triple Crank with a 10 speed cassette, and would like to replace the small 30T chainring with something in the neighborhood of a 26T ring. Anybody have any experience with this that could recommend a vendor for the chainring?