crank

Mix and match accessory hydro levers, stripped Camp crank bolts, and Campy front derailleurs.

This week, Lennard Zinn answers readers' questions about the size of cassettes and cranks, rubbing chains, and more

This week, Lennard Zinn answers multiple questions about cranks, bottom brackets, and oversized helmets

Nick Legan's third-to-last installment of Ask Nick looks at rice cakes and frame pumps, directors in team cars and Quarq 'cross crank

Tech writer Lennard Zinn gets an answer on aero crank effectiveness from FSA

Tech editor Nick Legan addresses reader questions on gear ratios for big days in the mountains… or the hills

Also: needing more rear offset, 52x34 on a double, amateur tool kits

A reader just bought a $5,000 bike and something ain't right. Singletrack.com's resident wrench Lennard Zinn views the reader's video and offers some thoughts.

Can someone repair my Campy carbon crank?

How can I fix my creaking cranks?

Are Shimano external bottom brackets interchangeable?

Why is my bottom bracket noisy?

Can I put a 105 compact crank on my Dura-Ace bike?

Do you have some bike suggestions for tall riders?

Why are my bottom bracket bearings wearing out so quickly?

Do you have any advice for correcting leg-length discrepancies?

Are longer cranks 'harder to push'?

How can I duplicate my position on a new bike (more tips)?

Should I grease my Campy Ultra-torque spindle?

Do you recommend compact cranks for climbing?

I'm a tall rider and my foot hits my rear derailleur, what can I do?

Do cranks flex, or is it the bottom bracket and frame?

Dear readers;I get a lot of questions about cranks – crank lengths, non-standardcranks, compatibility, etc., so I thought I’d just combine a number ofthem here.  --LennardDear Lennard;I would like to read your comments or opinions on a product calledPowerCranks (see at Powercranks.com). I would like to buy a pair to improvemy technique. Thanks for your help. --HeltonDear Helton;PowerCranks are cranks with a clutch bearing at the bottom-bracketconnection in order to only engage the bottom bracket in the forward direction.You can only keep them turning if you pull up and around the entire

Feedback on treating leg-length discrepancies.

VeloNews technical writer Lennard Zinn is a frame builder, a formerU.S. national team rider and author of several books on bikes and bikemantenance. This marks the beginning of Zinn's weekly VeloNews.com columndevoted to addressing readers' technical questions about bikes, their careand feeding and how we as riders can use them as comfortably and efficientlyas possible. Readers can send brief technical questions directlyto Zinn. We'll try to print a representative sample of questions eachThursday.Question: Do you have any advice for correcting leg lengthdiscrepancies?  I have undergone an