Saving Deliverance
Amongst the many things I've never done before is attempt to change a flat on a bicycle. Deliverance has been languishing in the garage since my return to Oz because of his flat front tire. (That, and the fact that his pedal keeps falling off.)
But I've discovered that my one and only bus no longer runs to the shops on Sundays, due to dangerous heavy rainfalls of sheep every Sunday or some such similarly ridiculous reason, and so, goaded on the misguided belief that Google would be my bake repair oracle, I happily set out this afternoon (my one and only free day this entire week) to try and fix my bike.
LovesHerDog kindly provided me with degreaser, WD40, rags, a scrubbing brush, a spare inner tube and moral support.
First, we ripped out the inner tube to find that it had been patched at least three times. No wonder the damn tire was flat. But we had a spare inner tube, so no problem, right? Wrong. Unfortunately, she also believed that we had a bicycle pump, a belief that proved to be about as accurate as my belief that this would be easy. Never mind. I fitted the deflated new inner tube onto the rim, happily believing that it was one just trip to Kmart away from being a nice plump tire again. Which was when I discovered that not all bikes are made equal. In other words, not everyone's bicycle rims are standard 26", god knows why. Bicycles, apparently, take the same approach to parts as iPods do.
Never mind, I thought I'd clean the bicycle instead. So after some embarrassing attempts and trying to set Deliverance upside down while avoiding dog poo, I sprayed degreaser liberally along the chain, the derailleur and the freewheel, humming a happy little tune to myself. Mucky brown crap started dripping off almost immediately. Then I remembered my helpful Google search had told me that I should remove the rear wheel for better access to the rear mechanisms. Damn you, Google, giver of false confidence.
I found out several things as a result of this:
First, my bicycle does not have a quick-release mechanism for the rear wheel. It took a fuck of a lot of grunting and straining before the wheel came off.
Second, there is a very good reason why you clean the chain entirely before you remove the rear wheel.
Third, bicycle grease is Satan.
Fourth, it is very very very very important to remember where the chain went on the freewheel BEFORE you remove it, because when you finish cleaning your bike in a half-assed sort of way one hour later, you will be stuck for twenty minutes in the back garden trying to cram the wheel back in while the light fades from the day like a bad horror movie where the heroine runs through the darkening forest with the evil dead shambling just behind her, and you will be cold and unable to put on a jacket because you are splattered with grease up to the elbows, and you can't check Google your fallen savior to find out how to put it back on because you are splattered with grease up to the elbow, and you can't get that damn hair out of your eyes because if you try you will have grease all over your face too, and not just up to the elbows, and your once-clean bike is covered with grease all over again because you didn't get it all off the chain and your fiddling has smeared it all over the nice shiny metal.
Fifth, soap will not remove bicycle grease. LOTS of soap won't work either. Neither will makeup remover. Cooking oil, on the other hand, will lay the Steve McQueen smackdown on grease, but will make you feel like a marinating chicken.
Six, do not mistake moles on your skin for bicycle grease. This is a potentially painful error.
Deliverance is currently sitting outside, both wheels off, still upside down, patiently waiting until the next day I have free where there is enough daylight and I finally have a properly-sized inner tube, a bicycle pump, and information on how to replace a rear wheel on a bicycle. I've never missed Punky more.
2 Comments:
- -ben commented:
Oh Lawdy...
Let's see what I can do.
Degreaser:
Cheap and not-so-safe: petrol (if anyone is smoking or having a BBQ nearby... *POOF!* Slinky on fire...)
Cheap and safer: rubbing alcohol (isopropyl alcohol).
Not cheap and safe: Finish Line Degreaser.
Do not use kerosene as it will dry out and destroy the chain.
Automotive degreasers also work but are extremely harsh on your hands (think exfoliation).
Chain lube:
If you don't plan to ride in the rain or leave your bike out in the rain: Finish Line Teflon Lube
If Slinky plans to cause traffic accidents by wearing white tops and riding in the rain: Finish Line Pro Road Lube.
Cleaning Your Chain
Finish Line Videos (free online downloads).
Since you paid AUS$30 for Deliverance, I am assuming you are not going to spend AUS$50 for a Chain Washer, so here's the method I used when I didn't own one.
Parts needed:
Degreaser or petrol or rubbing alcohol
Old jar, or coffee cup of your hated colleague / housemate
Drip tray (optional if working on garden)
Lots of paper towels (watch out for Sheryl Crow)
Old toothbrush
Safety goggles or glasses
Apron, old clothes (or go naked)
Surgical or kitchen gloves (unless you like black grease under your fingernails or are a Goth)
Method:
Fill jar or coffee cup with degreaser / petrol / rubbing alcohol
Dip toothbrush in jar / cup
Wear safety goggles if you do not wear glasses
Proceed to brush chain.
It is preferable to scrub the section of the chain hanging UNDER the frame, that way you do not dirty the frame so much.
Degreaser DAMAGES leather. Protect bicycle seat from it (especially since your bike is upside down.)
If you are using degreaser, you will need to use some water to rinse off the stuff and activate the oil-eating chemicals. An atomizer used for ironing clothes works wonders here. Use paper towel to dry the chain after that.
If you are using petrol or rubbing alcohol, also use paper towel to soak off excess. Let it air dry for 30 mins thereafter.
Relube chain with lube, dripping it into each link. The beauty of the Finish Line Teflon Lube is that once you used it, you practically will NEVER need to do this again unless you ride in the rain or in sandy conditions. This is because the lube dries to a hard waxy finish that flakes off when dirty. You only need to re-apply lube every 50 km or so (or after riding in the rain).
If you did this with your wheel on the bike, you need to clean your rim as some grease would have gotten on it. Use water and soap or rubbing alcohol. Also inspect the rear brake pads to see if any got them. Ignore this and you may find your rear brakes not working on your next ride.
You are done.
Tire tube replacement:
Size of tube:
The size of the tube is printed on the sidewall of your tire or old tube.
It will be in the form of YY x ZZ
YY = diameter of rim in inches.
ZZ = width of tire in inches
Tire tubes, as you have discovered, come in a range of diameters.
Tire tubes also come in a range of widths: e.g. 1.2 - 1.4, 1.5 - 1.9.
Find one that fits your tire range.
E.g. if your tire sidewall says 24 x 1.5, then a 24 x 1.5 - 1.9 will work.
Type of Valves:
The two common types of valves for tire tubes are Schrader and Presta.
Schrader is the type used on almost all cars. It is thicker than Presta. Simply pressing down on the center pin with your fingernail will release air.
Presta is thinner. You will need to gently unscrew the little knurled head before adding or releasing air. You will also need to tighten it after you are done.
A Presta tube will fit in a rim drilled for a Schrader valve but not vice versa.
Look at your old tube and find out which one you have.
Hint: Petrol stations air pumps only have Schrader heads.
Tools:
Tire levers
talcum powder
Paper towels
Water or rubbing alcohol (if you don't like to wait, like me)
Tire pump or Paris Hilton (OK, bad joke.)
Make sure that your tire pump can handle the type of tire tube (Schrader or Presta) you are installing.
I noticed you didn't mention tire levers. If you used a screwdriver to get the tire off the rim, you probably wrecked the rim. Hope not.
OK, since you already got the tire off, the rest is going to be relatively easy.
Pump up OLD TUBE and locate where puncture is.
Orientate OLD TUBE to rim to determine approximate location of puncture on TIRE.
Carefully run your fingers on the INSIDE of the tire carcass to feel if the foreign object is still embedded there. (No sense putting a new tube and puncturing it immediately.)
If all is well:
Remove VALVE CAP (usually a black plastic cone)
Remove VALVE STEM NUT (thin silver knurled nut)
Pump up NEW TUBE a little, enough for it to be a little rigid.
Put some talcum powder on your hands and coat the NEW TUBE. This is to prevent the tube from sticking in folds and pinch-flatting.
Release a little air from the tube and install NEW TUBE in tire carcass, valve first.
DO NOT INSTALL VALVE NUT TO VALVE STEM YET.
Holding the tire on the side opposite to the valve stem, press TIRE BEAD (the part that grips the rim) under the rim.
Carefully continue along circumference of the rim until you reach the valve stem.
If your thumbs are not strong enough, use tire levers to seat final part of TIRE BEAD under the rim.
When you are doing this, take care not to damage the valve stem or pinch the TIRE TUBE between tire bead and tire lever. If you did, you will need another new tube.
Gently pinch both sides of the tire around the entire circumference to help seat the bead.
Install VALVE NUT on VALVE STEM.
The RECOMMENDED PRESSURE is listed on the tire sidewall.
If you plan to ride exclusively on road, you can pump it to the maximum pressure. For a little more comfort (but a little more rolling resistance), subtract 10 PSI from the maximum stated.
Fit pump.
Pump up tire.
As the tire inflates, the VALVE NUT will become looser, GENTLY tighten it.
Replace VALVE CAP.
You are done, go ride.
Extras:
Removing grease spots from skin.
Free: green scrubbing side of kitchen sponge + dishwashing liquid.
Not free: automotive GoJo Orange Pumice Hand Cleaner.- » April 26, 2007 6:13 PM
- Slinky commented:
-ben: That's awfukly sweet of you to type everything out in idiot-proof terms!
The problem isn't the cleaning, I've got all the tools. The problem is putting everything back togetehr again. My derailleur is off the bike and refuses to back on, and both myself and LovesHerDog, despite many frantic, strenous hours, have been completely flummoxed.- » May 11, 2007 5:49 PM