If you try it on the FAST course at Shannonville they ask you to park the bike.
Really,they'll give you the boot for swervin ?
If you try it on the FAST course at Shannonville they ask you to park the bike.
If you try it on the FAST course at Shannonville they ask you to park the bike.
Actually, what reciprocity said about swerving doing nothing to heat tires, applies equally to car tires. To really get the temps up in tires, you need to accelerate hard, and brake hard. Swerving has minimal effect.
I think of it in terms of energy. When you swerve, you're not really adding energy into the tire system. Rather, you're just shifting it around from side to side. But accelerating does add energy, because you twist the throttle to burn more gas. That energy is used to accelerate you and the bike, via friction between the tires and road surface. The waste energy is dissipated as heat. The same occurs when you hit the brakes, as your brake pads use friction to dissipate your kinetic energy. Again, this is lost as heat, which hopefully, goes into your tires.
GP guys do it for style?
Yes.
Motorcycle tires don't work like car tires.
weaving does nothing to generate heat, accel and braking does.
That sounds counter-intuitive, can you elaborate on the difference?
I don't know much about the subject, but I would think that both swerving and braking would cause deformation and slippage which should generate heat? In fact turning can be considered a form of acceleration since there are speed changes along any given axis.
Is there something particular about the tire construction itself?
Actually, what reciprocity said about swerving doing nothing to heat tires, applies equally to car tires. To really get the temps up in tires, you need to accelerate hard, and brake hard. Swerving has minimal effect.
I think of it in terms of energy. When you swerve, you're not really adding energy into the tire system. Rather, you're just shifting it around from side to side. But accelerating does add energy, because you twist the throttle to burn more gas. That energy is used to accelerate you and the bike, via friction between the tires and road surface. The waste energy is dissipated as heat. The same occurs when you hit the brakes, as your brake pads use friction to dissipate your kinetic energy. Again, this is lost as heat, which hopefully, goes into your tires.
If you attended said brolly girl's dissertation, you'd know that this was already covered.
Actually, what reciprocity said about swerving doing nothing to heat tires, applies equally to car tires. To really get the temps up in tires, you need to accelerate hard, and brake hard. Swerving has minimal effect.
I think of it in terms of energy. When you swerve, you're not really adding energy into the tire system. Rather, you're just shifting it around from side to side. But accelerating does add energy, because you twist the throttle to burn more gas. That energy is used to accelerate you and the bike, via friction between the tires and road surface. The waste energy is dissipated as heat. The same occurs when you hit the brakes, as your brake pads use friction to dissipate your kinetic energy. Again, this is lost as heat, which hopefully, goes into your tires.
They do it out of superstition, old habits, whatever. I've seen plenty pics of GP guys that wipe when weaving side to side with cold tires.
It's a valid safety technique when used properly.
Let's say you're travelling on a four lane road in the curb lane. Up ahead a car is indicating a right hand turn in the same direction you are going. Swerving can make the driver realize that you're there by giving your bike "width" and letting the other driver know that you are a whole lot closer than he thought. ...
This is pretty much wrong.
Momentum is a vector. It has both a magnitude and a direction. If the direction of a car or bike changes, the direction of the momentum vector changes as well. If there is a change in momentum then energy must have been added to the system.
Turning does work the tires. However, hard braking and accelerating works the tires MUCH harder and is significantly better at putting heat into them.
Thanks for the fine instructive video! I do this sort of thing a lot, and I am pleased to see vindication.
I had three SMIDSY collisions in Toronto from 1961 to 1965 but I have not had any since that time, and I think that actively roving in my lane has helped me avoid them, during which I have ridden farther than the distance from here to the moon!...
Don't know if you'll get charged for stunting for that... might not want to risk it.
Ok, I didn't properly convey my point. Yes, I agree, turning/swerving adds energy into the system via you pushing on the handlebars. But that amount of energy you can input into the system via your arms, is much less than what the engine can add via accelerating, or the brakes can take via braking.
bad idea.