hex wrench

Also referred to as allen wrench (or misspelled as alan) and it is a necessity for your toolbox. A good set of metric allen wrenches is likely the most essential tool for modern bicycles. They are hexagonal rods of varying width (1mm – 10mm) designed to fit the many bolts on modern bikes from water bottle cage, to headset, to crank bolts. If you find yourself working on bikes for a significant portion of your week, a nice set of allen keys is a must. I like the L shaped ones with a nice rubber or plastic molded grip at the bend. For many a compact multi-tool that includes the most common allen key sizes will be all that is required. Alternatives to allen wrenches include hexagonal rods of varying width by mm or even a good set of metric hex wrenches will do the trick. Just buy a set.

hex wrench Tutorials

Embedded thumbnail for How to Replace Internally Routed Cables on a Bike

How to Replace Internally Routed Cables on a Bike

Do you have any tips on how to replace internally routed cables? I always dread changing mine.

Nearly every mechanic has cursed the widespread adoption of internally routed cables for the...

Company: Park
Type: Repair Tutorial
Embedded thumbnail for Replacing Bike Brake Cables How To

Replacing Bike Brake Cables How To

Most bicyclers are quite familiar with changing their brake pads as they're one of the first things that start to go after excessive riding. Over the course of a life though, having to swap out...

Company: Shimano
Type: Repair Tutorial
Embedded thumbnail for DIY Index Rear Bike Gears

DIY Index Rear Bike Gears

Most cyclers are familiar with the sweet sound of a gear clicking into place when they make a flick of their shifter. In a perfect world this isn't accompanied by any quick jerking and with little...

Type: Repair Tutorial
Embedded thumbnail for DIY Set Derailleur Limits

DIY Set Derailleur Limits

It's good to push things to the limit when you're rock climbing or running a 5K but the derailleur on your bike should stay well within it's set range. The upper and lower limits of your...

Company: Park
Type: Repair Tutorial
Embedded thumbnail for How to Fix a Bent Rear Derailleur

How to Fix a Bent Rear Derailleur

Peter wants to know: my bike fell over on the drive side and bent my derailleur hanger. Do you have any tips on how to straighten it back out?

Having a spare derailleur hanger on hand is...

Company: Velo
Type: Repair Tutorial
Embedded thumbnail for How to Install a Bike Seat on 3 Different Seat Posts

How to Install a Bike Seat on 3 Different Seat Posts

I'm going to show you how to install and adjust a saddle on three of the most basic type of seat posts.

This is the first one, it requires 6 mm allen key. All you're going to...

Company: Bontrager
Type: Repair Tutorial
Embedded thumbnail for How to Install Fenders on a Bike

How to Install Fenders on a Bike

I'm here to show you how to install fenders on your bike. It's actually a pretty easy process, you only need a couple tools: 15 mm wrench, 10 mm wrench, 5 mm allen wrench, and 3 mm allen wrench....

Type: Repair Tutorial
Embedded thumbnail for Install Campagnolo Over Torque (BB30) Bottom Bracket and Cranks

Install Campagnolo Over Torque (BB30) Bottom Bracket and Cranks

In this video, we're going to show you how to fit a Campagnolo over torque bottom bracket and change set. The over torque bottom bracket is a standard BB 30 press fit. To do this job, you'll need...

Company: Park
Type: Repair Tutorial
Embedded thumbnail for Fix Bike Crank Bolt Issues

Fix Bike Crank Bolt Issues

For the most part bolts that creek or are loose are a pretty easy fix, either tighten them, lube them, or replace them. That's partly true with bicycle bolts as well but when dealing with the...

Company: Truvativ
Type: Repair Tutorial
Embedded thumbnail for Several Methods for How to Install a Rear Rack onto Bicycle

Several Methods for How to Install a Rear Rack onto Bicycle

Let's install a rack on the back of your bike. It's surprisingly easy to do this, but first let's start by pre assembling our rack and making sure that the struts that attach the rack to the top...

Type: Repair Tutorial
Embedded thumbnail for DIY Cut Bike Steer Tube and Tap Star Nut Down

DIY Cut Bike Steer Tube and Tap Star Nut Down

I'm going to be trimming down my steer tube. I actually just thought this up on how to tap the star nut down without using an actual star nut tool. What I'm going to do is...

Company: Cane Creek
Type: Repair Tutorial
Embedded thumbnail for How to Remove a Bike Stem

How to Remove a Bike Stem

I'm going to show you how to remove the stem from your bicycle. First thing you want to do is to make sure that your wheel has been removed so that when you disassemble the top cap...

Company: Avid
Type: Repair Tutorial
Embedded thumbnail for Bicycle Wheel Cartridge Bearing Maintenance

Bicycle Wheel Cartridge Bearing Maintenance

Ian wants to know: the bearings in my Roval wheel feel rough when I spin them around. How do I replace the bearings or overhaul my hub?

The quick way to overhaul cartridge bearings is...

Part hubs wheels
Company: Easton
Type: Repair Tutorial
Embedded thumbnail for DIY Change a Mountainbike Handlebar Stem

DIY Change a Mountainbike Handlebar Stem

For many consumers, once they buy their new bike they'll never think twice about the handlebar stem as it generally doesn't cause the rider any problems. There are times though when a bad spill...

Company: Park
Type: Repair Tutorial
Embedded thumbnail for DIY Fixing a Stuck Seat Post

DIY Fixing a Stuck Seat Post

As far as DIY bike replacements go, changing out a bike seat is pretty simple. You simply loosen up the nut keeping the seat on and pull it out for a more comfortable model. Unfortunately if it's...

Part seat post
Type: Repair Tutorial
Embedded thumbnail for How to Set Up and Adjust Cantilever Brakes

How to Set Up and Adjust Cantilever Brakes

Hi, I'm Jonathan from Franklinton CycleWorks. Today I'm going show you how to adjust your cantilever brakes. Now, cantilever brakes are also known as cyclocross brakes because...

Company: Park
Type: Repair Tutorial
Embedded thumbnail for Replace a Road or Mountain Bike Chainring

Replace a Road or Mountain Bike Chainring

Why would you want to replace your chainrings? Well, it might be that you’re upgrading them, changing the size, or you might want to experiment with some Osymetric or Rotor rings on the road. If...

Part Crankset
Company: Park
Type: Repair Tutorial
Embedded thumbnail for Install a Baby Seat to the Back of Your Bike

Install a Baby Seat to the Back of Your Bike

Most parents have used the 'baby in the car' trick to go on a long ride and get their little one to sleep. Well with today's high gas prices and if your toddler is being stubborn it could cost you...

Part seat post
Type: Repair Tutorial
Embedded thumbnail for DIY Shimano Rear Derailleur Adjustment

DIY Shimano Rear Derailleur Adjustment

Rear derailleurs for the most part are relatively maintenance free except for lubing and cleaning regularly. One minor fix you may have to perform on a regular basis is an adjustment for when the...

Company: DT Swiss
Type: Repair Tutorial
Embedded thumbnail for DIY Hollowtech II Crank Installation

DIY Hollowtech II Crank Installation

The crank is the powerhouse that keeps your bicycle moving and from time to time the unit needs to be replaced or you might just want an upgrade. One such improvement can be made to your cycling...

Part Crankset
Company: Continental
Type: Repair Tutorial

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