Sorry for going on and on. This just happens to be a topic that's important to me. I hear a lot of the same excuses thrown around, some valid, some not. Since it's a topic that means a lot to me I at least like to point out the things that flat out don't make sense, the opinions that come from ignorance. It's like when you encounter a person who says homebrew makes you blind. At that point, you have a choice... do you educate or do you walk away? If you want to educate, you try to stay civil, be respectful. I'm trying to do that here and thankfully, I like you DB, so it's not hard at all to do. I hope we can see eye to eye on most of this stuff...
DeathBrewer said:
yes, but there were plenty of cars behind him and they weren't travelling near as fast. these are long blocks between lights and i can guarantee that the other cars were going over 35...that's how people drive there. so with that in mind he was well over the speed limit. he also was pretty far away when we saw each other. bikes can stop faster than cars too...
No, Not really...
On the one hand, per square inch, motorcycle tires are more grippy than car tires, on the other hand, bike tires have a round bottom because they are designed to have traction while leaning, whereas the car tires have a flat bottom. This gives the car tire far greater contact patch with the pavement. Not to mention that they have 4 wheels from which to derive traction versus two.
In addition, most cars have ABS while most bikes don't (some do nowadays and it's getting more common, but still far less than 10%).
In addition, if a car skids, the driver can get off the brakes and reapply them. If a motorcycle skids the front wheel for more than a half of a second or so, the rider will hit the pavement almost every time. In short, the penalty for trying to over-brake is far more severe on a bike than in a car, causing most riders to err on the side of caution...
Here's a source that more or less obfuscates the answer...
http://en.allexperts.com/q/Motorcycle-Safety-Driveability-790/Motorcycle-Stopping-Distance.htm
It was probably true in 1980. And it is probably true that bikes can stop faster than cars today...BUT.
Modern bike brakes are fantastic. But modern car brakes, especially with the advent of antilock braking systems, are fantastic too. So let's qualify the answer.
Take an average rider and an average driver on/in modern machines, the car can probably stop faster. (One thing though is that it depends on the car in question. If the car does not have antilock brakes, this may go the opposite way.)
Take an expert rider and an average driver on/in modern machines, the bike can definitely stop faster.
Take an expert rider and an expert driver on/in modern machines, and the car can probably stop faster....but that would be close, and probably again depend on the car.
Much of the rhetoric about bikes being able to stop faster than cars is, in my opinion, old public relations tactics (to wake people up to the fact that riders need plenty of room) that have taken on a life of their own--repeat something enough times and it becomes "true" in the minds of most people, even though reality may be different. It's still a good idea to tell drivers that bikes can stop faster, in order to get them to not follow so close....
but he wasn't able to slow down enough to even see what i was doing. he panicked.
When a driver panics, he presses the brake pedal too hard and a mild skid ensues... or ABS saves his butt and brings him to a safe stop. When a rider panics, it takes less than a half of a second for that front wheel to lock up, creating a grease spot on the pavement. The next thing that happens is the rider begins to fall to the ground. Motorcycles don't have the 4-wheel safety net. When that front wheel loses traction, it's just about game over. The experts say a rider has about a half of a second in which to save a front wheel skid. From there, the two wheels aren't stable like 4, and the bike starts to fall to one side and there is pretty much no saving it at that point. It's not much of a stretch to say that a skidding front wheel is just about equal to "going down" for most street bike riders.
Imagine how many times you've skidded your car... if each one of those times resulted in some road rash or a trip to the hospital... then, just exactly how hard would you want to get on your brakes in an emergency? That's the balance many street riders face. Sure their bikes are supremely capable, but once you get out of your comfort zone, the stakes climb mighty high and mighty fast.
For car drivers, or for riders with a lot of dirt bike experience, it's a piece of cake to handle a front wheel skid. In fact, in my car, I do it nearly every day. It's a non event. But on the bike? It pretty much dirties up my shorts every time I get close.