Sunday, February 12, 2012

bike death

Here's a list of various (often popular) bike set ups that I think would cause death. IMHO, there's quite a common tradeoff between weight/efficiency and catastrophic equipment failure that would lead to death.

Carbon fork

Fancy boy cyclist would think: It costs a lot more and saves a WHOLE POUND! Awesome!

I think: Say theoretically I hit a pothole while going down a hill (theoretically Pine St.)... does the carbon fork fail? If it does, the front of the bike crumples and I fly face first into the pavement ahead of me at full speed. If I'm (un)lucky the pointy shards of the carbon fork may impale me on the way down, either taking me out of my misery or adding to it. No thanks, but I do not need nor want your fancy carbon fork. I'll take the cheapo steel fork that would just bend if something terrible like this were to happen.


700c x 23 tyres

Fancy boy cyclist would think: Wow, these skinny tires weight 10g less and have less rolling resistance! I must have these!

I think: Failure scenario 1: 25mm tires can easily be gobbled up by the seams between concrete slabs, like those on the downhill on Pine St or along Airport Way. 700 x 25 tires are already bad enough, but 23mm is even worse. The best case scenario is what happened to my "wide" 25mm on Airport Way and it just damaged my tire. Cost: $24. The more likely scenario is that you get thrown off your bike at full speed, smash into the pavement, and then get run over by the car that was next to you. Ouch! Cost: Way more than $24.



Fixed Gear Bikes

Fancy boy cyclist would think: I am a cool hipster! Look at me and my minimal bike!

I think: You live in Seattle. There are hills. You can't go down hills because you can't pedal fast enough. You can't go up hills because you aren't strong enough. You are an idiot.


Fixed Gear Bikes with No Brakes

Fancy boy cyclist would think: I am a cool hipster! Look at me and my minimal bike!

I think: You live in Seattle. There are hills. You can't go down hills because you can't pedal fast enough. You can't go up hills because you aren't strong enough. Some of these bikes don't have brakes so the only way to stop is to slow down the pedaling and rely on the rear wheel to bring you to a stop. This is like engine braking on trucks or downshifting to slow down in your car. There are two problems here. First, I wonder how easy it is to control the amount of braking this way. Second, under the best of circumstances, braking with only the rear wheel is very ineffective. Just like a car, most of the braking power is applied to the front. The harder you brake, the less weight on the rear wheel. For a hard stop, almost all of the braking is done by the front wheel and the rear wheel may be lifted off the ground. In this setup there is no front. The best bet is to lock up the rear wheel and keep sliding for a very long time. At least you will look like a cool hipster when you are doing it.

No comments: