One of the great things about owning a bicycle is that, as far as machines go, maintenance is fairly simple and straightforward. In general, a bicycle runs happiest and best when it is clean.
Everyone has their own way of washing their bikes, but it’s important that you do it regularly. This is especially important for mountain bikers who hit the trails, and those of us who ride in the wet. Today, I’ll show you how I do it.
TOOLS AND SUPPLIES
- Degreaser or dishwashing soap
- A bucket and a water dipper (tabo) of warm water
- A water hose
- Old toothbrushes and/or finger-sized bottle brushes
- Stiff-bristled brushes
- Your choice of wet or dry chain lubricant
- Rags
- An old wash mitt
- A flat-head screwdriver (optional)
- A chain cleaner (optional)
- A stand or workstand (optional but highly recommended)
PREPARATION STEPS
The first thing to do is to strip the accessories from your bike – usually removable lights, mini-pump, locks, cyclocomputer and water bottles. They’ll just get in the way, and you don’t want these getting wet with soapy water because soap tends to defeat waterproofing. Soap makes water more slippery – it’s how it does its job.
Another prep step unique to bikes with disc brakes is putting on plastic bags over the brake calipers and rotors, or removing the wheels. This is to minimize the chances of contaminating the rotors or brake pads with oil, either from chain lube or the oils on your skin. Contamination reduces the effectiveness of brakes and can make them noisy. You can clean out rotors with brake cleaner or isopropyl alcohol, but contaminated pads have to be replaced.
WHY WASH THE DRIVETRAIN FIRST?
Most bicycles have a chain transmitting pedaling power from the pedals and chainrings to the rear wheel via one or more cogs or sprockets. With multiple cogs, derailleurs or mechs push the chain sideways to switch between them. These “guts” of the bike are exposed to the elements and end up becoming the dirtiest bits, which is why you have to wash them first.
The chain contains lubricant or oil, which enables the pins and rollers in the links to do their job, but also attracts dirt and grit over time. The dirt acts like sandpaper, wearing away at the chain’s rollers and causing “chain stretch.” Some chain stretch over time is normal, and manufacturers recommend replacing the chain after a while. If you continue using the stretched chain, it will deform the flat teeth on the cogs and chainrings, wearing them away into sharp and pointy shark-tooth shapes that will result in skipping and loss of drive. When this happens, you have no choice but to replace the whole drivetrain – not just the chain. That’s a minor shame, considering that a typical cassette should last around three chains’ worth of wear – with the chainrings lasting much longer.
If you have a KMC Missing Link or some other removable link, you can use that to remove and reattach the chain for cleaning. In my experience though, they tend to become loose after about 10 disconnect-reconnect cycles – and if you’re not careful it’s easy to lose the Missing Link itself.
These days, I prefer cleaning the chain without removing it from the bike. To do that, I use a Finish Line chain cleaner, which I bought from my Japan trip earlier this year. This useful device has a small tank for degreaser, three rotating brushes, scrub plates, and a magnet at the bottom to attract bits of worn chain.
You start by filling the chain cleaner with your preferred degreaser. For most cases, dishwashing liquid will work. If what you use is thick and viscous, you’ll want to dilute it; I make a solution of one part of my thick dishwashing liquid in three parts water. The chain cleaner will have a fill line on its side; fill up to this level.
Next, shift to your smallest cog and largest chainring to push the chain as far right as it will go. Hook the chain cleaner over the chain and snap it closed. Hold the chain cleaner right up to the cage of the rear derailleur, then turn the cranks backward for 60-90 rotations. (If you don’t have a chain cleaner, you can use two toothbrushes held in a pincer formation as they pinch the chain.)
With a thick degreaser diluted in water, as above, you can really see the chain cleaner doing its work. The chain will slowly foam up as the degreaser is agitated by the brushes, which clean the chain along with the scrub plates. Any metallic dirt it removes from the chain, it will hold on to using its magnet. Try to hold the chain cleaner steady, as pushing it side to side (like a manual derailleur of sorts) can lead to a dropped chain.
After 90 crank rotations, check the chain. If it’s especially dirty, it may need another round with the chain cleaner. Drain the chain cleaner, fill it up with fresh degreaser solution, then repeat until the chain is sparkling clean.
CLEANING THE CASSETTE
We now move on to the cassette. Your chain should still be in the smallest cog at this point. Break out your stiff-bristled brush, dip it into your water dipper (tabo) of soapy water, and press its bristles up against the cassette longitudinally.
With your other hand, turn the cranks forward – while being careful not to snag your brush hand’s fingers or knuckles on the rotating spokes. This will spin the cassette, and with every rotation the stiff-bristled brush will scrub the cogs and the gaps in between. If you backpedal on the crank like you did with the chain cleaner, the cassette won’t spin because of the drag from the brush.
Continue doing this, dipping into the soapy water every so often. Repeat this process after shifting to the largest cog, so that you can scrub the smallest cog of its dirt too. Your cassette will be clean before you know it.
SCRUBBING THEM CHAINRINGS
Once done with the cassette, shift to a middle cog to prepare for chainring and crankset cleaning. Cleaning the chainrings is a simpler affair; all you really have to do is target the teeth and the shift ramps and pins behind the middle and large chainrings.
To ensure a thorough clean, shift up and down the chainrings as necessary and scrub away.
Clean your cranks and pedals at this point too. If you have clipless pedals on your bike, make sure you target the retention mechanism and springs.
DON’T FORGET YOUR DERAILLEURS
Set aside the big brush for now, and get your toothbrush and other fine brushes. Derailleurs are intricate little things and need a little more dexterity to clean.
The most important bits to clean are the pivot joints where the derailleurs move when shifting. These parts are usually lubricated, which means they can also attract dirt and give you lousy shifting when left alone for too long.
The next bit to clean is the cage, which is pretty much 70% of your front derailleur. You can imagine it can get pretty grotty having to accept and push a dirty chain around. Keeping this clean means one less place for your chain to pick up dirt.
When you clean the rear derailleur, the main difference is that the little jockey wheels its cage contains can collect a lot of dirt. Scrub the pivots and cage as before, then take a toothbrush or a flat-head screwdriver and hold it next to the jockey wheels as you turn the cranks backward. This cleans all the surface grime.
Lastly, don’t forget the springs of the derailleurs themselves.
CLEANING THE REST OF THE BIKE
Now that your drivetrain is sparkling clean, you’re halfway done with the job.
Get the hose and set it to a gentle spray of water to rinse off the dirt on the surfaces of the bike. Avoid using a high-pressure jet of water, as the force can knock all the grease out of hubs, headsets and other parts that you want to keep running smoothly.
Once the bike is rinsed, it’s time to bring out the bucket of soapy water and the wash mitt. You want to work with gravity here, so begin washing from the front and top of the bike, then work your way downward and backward. This means washing the handlebars, stem or handlepost, saddle and seatpost first.
If you have a road bike with white bar tape, you’ll know that it gets dirty if you even just look at it the wrong way. Take a second clean scrub brush, apply some soapy water, then scrub away. With a little elbow grease, the bar tape will go most of the way back to its bright white (although it’ll never be truly as bright as it was originally).
WASH = INSPECTION
While washing, inspect the frame tubes for any discoloration, cracks or damage. This is the best time to do so since you’re up close and personal with the bike, and is all the more important if you have carbon fiber or composite parts like forks and seatposts – or, indeed, a carbon fiber frame.
Do the same for your wheels and tires. Check for rips, tears and irregular wear as you wash. Check the spokes by hand for evenness of tension, and identify any loose spokes. If you have rim brakes, make sure you wash and clean the brake tracks on your wheels, and check for any pitting or signs that the wheel may be weakened at the brake track. If you have disc brakes, check the rotors for discoloration.
Some of the dirtiest parts of the frame are the downtube, bottom bracket shell, cable guide, seat stays and chainstays. Make sure you reach them with at least one pass of soapy water.
After lathering up the bike, hose away with a gentle spray of water and dry off with your rags.
Now you can put your accessories back onto your sparkling clean bike! If you’re so inclined, you could also wax the frame for more luster, as dishwashing liquid tends to strip any wax.
THE HOME STRETCH: LUBRICATING THE CHAIN
It’s been a long post but the last thing you do at the end of a bike wash is to lubricate the chain. Break out your chain lube. There are dry lubes for general riding, and wet lubes for extra tenacity in wet conditions. Bear in mind that wet lubes also attract more dirt, more easily.
Chain lube is best applied to each roller pin one at a time, and only on the inside of the chain – the side facing the teeth of the cogs, chainrings and jockey wheels. Putting it anywhere else on a chain is a waste of lube, and just increases the risk of splattering the lube on places on a bike where you don’t want it, such as rims’ braking tracks or disc brake rotors.
The way I do it is I pick out a fixed place on the chain where I can start and end my lube job. KMC Missing Links are ideal for this, since they are distinct from all other links on a chain.
You don’t really need all that much lube – any more just attracts more dirt quickly. All you want is a thin coat. Once all pins have been lubed, take a rag and wrap it around the chain while you turn the cranks backward. This removes excess lube.
While you have your bottle of chain lube open, treat your derailleurs to fresh lube on the pivots and jockey wheels. This ensures they keep working properly. Perform a few test shifts to work the lube into the pivots, cassette and chainrings.
After all that, treat yourself to a shakedown ride. Congratulations!