I use a Specialized Air Force I (now there's a bold name) full-sized hand pump, which claims 140 PSI capacity. After about 75 PSI, filling my tire is somewhat...

Strayhorn wrote: snip The components are all marked Shimano RX100. This is fine with me but the shifters are on the downtube and I'd like to replace...

In article , Fritz M wrote: {r.b.tech might be the more appropriate group to post...

How much less efficient (in %) is a tire that is under inflated by 50% when riding on a road surface? The reason I ask is because right now I do most of my...

Need to replace cranks on a Trek 7300fx and want as large of outer ring as possible. Stock was 48t and that would be fine. What would the 'sweet-spot'...

I was looking to get 20in bike for daughter, and thought a 3 speed w/internal gear hub would be perfect - more gears, easy to use, no maintenance. However I...

I recently purchased a Zefal elegante pump, which touted its "auto-select valve system" as adapting automatically to presta or schraeder valves. As far as I...

I've been riding for about 3 years now. First MTB with a Giant Rainier and now road with a Specialized Allez Elite (105 but with Ultegra shifters). I've never...

I bought a pair of shop built wheels the other night - Velocity disc rims with Hayes Elite hubs. The guy at the bike shop said the hubs were really Hugi but I...

How is it that some cyclocomputers are able to measure the grade of a road? Will this be an accurate measurement? Thanks, -Mike

ALL substances strain under stress. Often the displacement is not visible. If you see elastic deformation as 'inefficient' then visible strain will...

The callow youth at my LBS offered to replace my spare MTB chain on the basis that the side slack/play was excessive. On their Chain stretch gauge the chain...

I have a friend for whom I've been sporadically performing maintenance for a few years now. She has a Waterford touring bike with Dia Compe canti brakes, the...

Hit a bump on the bike trail last night. My hands were on the upper sides of the drops. My Aluminum ATAX handlebars broke at the forward bend on the left...

Anyone have a guess at the approximate weight of a LeMond "Grand Canyon", which has a steel frame with triple Sora? I can't find any info on this frame (maybe...

I have a Campy Record 8 speed rear hub that's been converted to 9 speed. On the smallest cog, the chain rubs the frame...on two different bikes. Is this a...

I have a tiagra triple in the front. It seems to have an extra shift, both as I move from the smallest to the middle chainring, and also from middle back down...

I don't know zilch about bikes. My wife wanted to start riding around the neighborhood for exercise, so bought a bike. Also, with gas prices going sky high,...

I am having a custom road frame built this winter and am toying with the idea of shrugging off the tyranny of the derailleur in favor of a speedhub. I haven't...

on the the 544's hood rests a box of 14 holed self sealing tubes ripped beyond self sealing but filled with slime. i am asshole deep in used slime is there a...