Over the years I've seen enough scrappy bikes to fill a warehouse. Some look like they were hit by trucks, but most of them have fallen into disrepair for simple reasons - a cable breaks, a tube explodes, a head set loosens up and fails, a chain breaks, and so on. Some bike mechanics will tell you it's the bike, that the general quality of the components used are sub par and prone to failure. Yes, parts can fail, but I've also seen some of my high-end equipment fail - just not at the same rate as lower end. While it's true that bike parts come in different quality levels, nothing replaces good old fashioned wrench turning to keep your bike in shape.
This is where some folks become traumatized. "I can't work on that thing...look how complicated it is!" What I think most people mean by that comment is, "I can't work on that thing...I don't have the right tools!" Well I'm here to tell you that with some determination and a basic tool kit, about 85% of your simple bike needs can be addressed.
At Bikes For Tykes, we came up with a basic Tool Kit that handled most of the issues on bicycles that came in from donors. It's not all that special, and only has a few unique items that would be considered "bicycle only." Most of the kit can be purchased at Sears, and the bike-specific stuff at bike stores or online shops. Anything you don't see in the following Kit will be at a bike shop in their service department. Local Bike Shops (LBS) are a great help usually.
Send me an email if you have any questions about this kit or about bike repair.
The Kit
Box end/open ended wrenches - Nothing beats a good set of wrenches. For our purposes they don't even need to be ones of quality, but standard Craftsman wrenches from Sears also serve us well. The most-used sizes for our purposes are:
- 6mm - Some smaller accessory hardware
- 8mm - Brake parts and accessory hardware
- 9mm - Rear derailleur cable adjustments
- 10mm - Brake hardware, accessory hardware; a commonly used wrench
- 12mm - Some stem bolts, some accessory hardware, some brake hardware; not often used, but crucial when needed
- 13mm - Front axle nuts, stems, seat height adjustment bolts, handlebar adjustments; a commonly used wrench
- 14mm - Seat hardware, some front axle nuts, some seat height adjustment bolts; a commonly used wrench
- 15mm - Rear axles nuts, some front axle nuts; a commonly used wrench
- 17mm - Some axle nuts (heavy duty BMX bikes), other hardware. Not commonly used but worth having when needed. Can be purchased in this size as a "Cone Wrench," a very slim version of an open ended wrench that can fit in tight places.
- 19mm - Not commonly used, but sometimes needed (often comes in a specially priced pack of metric wrenches at Sears or Harbor Freight)
Channel Locks (adjustable pliers) - Sometimes I refer to this as my WonderTool. I use a pair of channel locks on virtually every project. They are especially useful in servicing one-piece cranks and bearings, because they can grip the crank nut easily. Pliers can also hold the end of a derailleur cable while you adjust the tension. The ones I use are easily twenty years old, and have a slight tweak to them. They serve me well because I know them like the back of my hand.
Big crescent wrench - What can I say? In a pinch, they usually get you out of it.
Cable Cutters - This is a bike-specific tool that is worth every dollar you pay for it. Get one at your local bike shop.
Chain Breaker Tool - Helps you either install new chains or remove old ones. It pushed the pin through one side of the chain link and allows you to separate it.
Metric hex tool or wrench set - Also known as "Allen Wrenches," these are used for everything from accessories to brake hardware to stems and cranks. A bike tool kit is frustrating without them.
Multi-bit screwdriver - Commonly found in hardware stores, these screwdrivers have two Phillips head drivers and two straight blade drivers of different sizes. Used for derailleur adjustments, accessories, brake adjustments.
3/8" drive Ratchet - Mostly used for removing or installing cranks on bikes with a "square taper" bottom bracket. Can also be used in conjunction with any of the metric sized sockets that match the wrenches listed above. The ones that get used the most in my tool kit are:
- 10mm socket
- 13mm socket
- 14mm socket
Pedal Wrench - A vital tool in any kit. There's nothing more gutter-grade than having ride around on a broken plastic pedal. Get the one that has a 15mm opening on one side and 9/16" on the other.
Crank extractor - This is used alongside the ratchet when removing "three-piece" cranks on some bikes. One part of the extractor threads into the spindle hole on the crank arm. Then another part screws into the first part and presses against the spindle so the arm backs out. This tool is worth BMX, Kids, and cheap Mountain Bikes use a "one-piece" crank design that usually only needs a pair of channel locks to loosen.
Red-handled spoke wrench - Spoke wrenches from Park Tool are color coded. The red one - commonly known as "Asian" - is the one I use almost all the time. My black and green ones just sit mostly.
3 Tire levers - Pedro's makes big tire levers - in many colors - out of old melted down pop bottles. They also work great. Get three of them and you'll always be able to get that tire off!
Baby Powder - A cheap container of baby powder is something I have around to sprinkle on the tire tubes before I put them in the tires. This will prevent the tire levers and grabbing and yanking the rubber tube as you are putting the tire back on the rim. The most expensive road bike tubes are powdered; that's where I got the idea to powder down regular tubes. Works great!
Disc Brake Grease - This is the same stuff you would use on wheel bearings when doing a brake job on a car. It's cheap, it puts up with more abuse than a bicycle bearing could ever put out, and it's easy to work with. Disk brake grease is designed to operate up to high temperatures that bikes never attain. Headsets, BMX bottom brackets, seat posts, and wheel bearings can all be slathered in this stuff to keep them rolling nicely.
Tri-Flow - Best darn liquid lubrication available for bicycles.
Regular Hammer - I use a standard issue construction hammer for simple stuff like popping out bearing races.
Old seat post - This works well as a cheap punch for removing bearing races from bottom brackets or head sets. If you destroy it, you're not out a lot of money because...well...it was a crummy seat post. You get the picture.
Brass Hammer - Sometimes it pays to hammer with something that is softer than what you're hammering on. That's where the brass hammer comes in. When a stem is stuck but the stem bolt moves, a swift hit on the bolt with a brass hammer will loosen the stem nine times out of ten.