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Old 06-24-2009, 10:00 AM   #1
shmike
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As a scientist, why would I want to put braking and steering forces on only one tire by using only the front brake? I can split these two forces to two tires by using both brakes.

I hardly ever use trail braking going up a mountain. But coming downhill, I use it on almost every tight corner. I brake with both brakes before the turn, keeping them on into the apex of the turn, and accelerating out smartly. Smooth, quick, and safe.

Do you know what a switchback is? Some call it a hairpin turn. You turn 180 degrees, just like a U-turn. Lookout Mountain has at least six switchbacks. You have to brake from 50 to 15mph. And most of them are blind. You don't jam on the brakes like a racer. You squeeze both brakes smoothly before and half-way through the turn.
Typical scientist. You're only looking at the hypotheticals on paper without considering the real life experience.

Once the back tire is off or skimming the ground it offers little or no stopping force.

"Jam on the brakes like a racer."

Awesome, good explaination and pic. That is some serious front-end dive though. I have always had mine set up to leave 10-15mm of travel at full stop.
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Old 06-24-2009, 10:22 AM   #2
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Typical scientist. You're only looking at the hypotheticals on paper without considering the real life experience.

Once the back tire is off or skimming the ground it offers little or no stopping force.

"Jam on the brakes like a racer."

Awesome, good explaination and pic. That is some serious front-end dive though. I have always had mine set up to leave 10-15mm of travel at full stop.
I'm not as cool as you guys but if I set me bike up for 10mm, I would lose the front guaranteed!!! You must have the brake control of a GOD!
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Old 06-24-2009, 12:57 PM   #3
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Not only am I a scientist, but I'm a realist too. Compare the stopping distance of cruisers with sportbikes in the magazines. The cruisers weight 200-300 pounds more, have smaller rotors, and touring tires, but stop in the same distance. If they put sticky tires on the cruisers, they would stop quicker. Could it be that the cruiser has two wheels on the ground while stopping?

If I was on a modern sportbike braking so hard for a tight curve that my rear wheel was off the ground, I don't think I could successfully make the turn. Anyway, it doesn't take a modern sportbike to go quickly down Lookout Mountain, as some bicyclists go down quicker than many sportbikes.

Sooner or later, someone from TWF will make it out to Denver and will want to ride Lookout Mountain. I want them to know how to ride it quickly and safely.
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Old 06-24-2009, 01:03 PM   #4
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Originally Posted by No Worries View Post
Not only am I a scientist, but I'm a realist too. Compare the stopping distance of cruisers with sportbikes in the magazines. The cruisers weight 200-300 pounds more, have smaller rotors, and touring tires, but stop in the same distance. If they put sticky tires on the cruisers, they would stop quicker. Could it be that the cruiser has two wheels on the ground while stopping?

If I was on a modern sportbike braking so hard for a tight curve that my rear wheel was off the ground, I don't think I could successfully make the turn. Anyway, it doesn't take a modern sportbike to go quickly down Lookout Mountain, as some bicyclists go down quicker than many sportbikes.

Sooner or later, someone from TWF will make it out to Denver and will want to ride Lookout Mountain. I want them to know how to ride it quickly and safely.
Well we have mountains here as well, and we also have those 180 degree turns you mentioned which can vary being negative cambered, 15 mph turns etc... I do think styles can vary based upon the type of bike being ridden and what era said bike is from. Like everything else not one style will fit all riders.
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Old 06-24-2009, 01:48 PM   #5
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One day man, one day. I am going to meet you and hopefully ride with you...holding out for the day I get an ADV capable bike suitable for a trip up there!
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Old 06-24-2009, 02:05 PM   #6
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Originally Posted by No Worries View Post
Not only am I a scientist, but I'm a realist too. Compare the stopping distance of cruisers with sportbikes in the magazines. The cruisers weight 200-300 pounds more, have smaller rotors, and touring tires, but stop in the same distance. If they put sticky tires on the cruisers, they would stop quicker. Could it be that the cruiser has two wheels on the ground while stopping?

If I was on a modern sportbike braking so hard for a tight curve that my rear wheel was off the ground, I don't think I could successfully make the turn. Anyway, it doesn't take a modern sportbike to go quickly down Lookout Mountain, as some bicyclists go down quicker than many sportbikes.

Sooner or later, someone from TWF will make it out to Denver and will want to ride Lookout Mountain. I want them to know how to ride it quickly and safely.
I will eventually take you up on that, AND I'll bring the VTX
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Old 06-24-2009, 02:28 PM   #7
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Quote:
Originally Posted by No Worries View Post
Not only am I a scientist, but I'm a realist too. Compare the stopping distance of cruisers with sportbikes in the magazines. The cruisers weight 200-300 pounds more, have smaller rotors, and touring tires, but stop in the same distance. If they put sticky tires on the cruisers, they would stop quicker. Could it be that the cruiser has two wheels on the ground while stopping?

If I was on a modern sportbike braking so hard for a tight curve that my rear wheel was off the ground, I don't think I could successfully make the turn. Anyway, it doesn't take a modern sportbike to go quickly down Lookout Mountain, as some bicyclists go down quicker than many sportbikes.

Sooner or later, someone from TWF will make it out to Denver and will want to ride Lookout Mountain. I want them to know how to ride it quickly and safely.

You have to take into account the weight bias of sportbikes vrs cruisers though. Most cruisers have probably 60-70% of thier weight on the rear wheel at rest. Most modern sportbikes have 49% of thier weight on the rear at rest. When braking and the wieght transfers forward, the back tire contact on a sportbike is negligible. The cruiser still won't hit 50-50% even under braking in most cases so the rear brake helps a lot more on them.
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