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Old 07-24-2015, 04:10 PM   #41
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Why didnt he just move to the right part of the lane and keep going?
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Old 07-24-2015, 04:10 PM   #42
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Quote:
Originally Posted by Repth View Post
There is no torque acting on the bike if the center of mass is located directly between the two wheels, thus there is nothing causing the bike to compress the front forks or rear shock for that matter. Obviously no motorcycle has a center of mass this low, but a lower center of mass clearly results in less torque. Furthermore, the more rearward the center of mass, the greater the amount or torque about the front wheel in the orientation opposed to the one that would cause loading of the front forks (and thus the lower net torque about the front wheel). Because of the lower torque about the front wheel, the front end doesn't get loaded as much and the braking stays more neutral... Except that the front has a much smaller contact patch. Considering the fact that cruisers have both a lower and more rearward center of mass when compared to sport bikes, this leads them to have wildly different braking characteristics.

Motorcycles exhibit the torque from the rake angle in the forks.

Yeah a cruiser stops different than a sportbike buT again you need your front brakes more than your rear for stopping power.

But if you feel otherwise thats fine, I'll stick to what I know and what works

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Old 07-24-2015, 04:21 PM   #43
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Quote:
Originally Posted by rccarlson22 View Post
Motorcycles exhibit the torque from the rake angle in the forks.

Yeah a cruiser stops different than a sportbike buT again you need your front brakes more than your rear for stopping power.

But if you feel otherwise thats fine, I'll stick to what I know and what works
What do you even mean by "exhibit torque from the rake angle in the forks"? That statement doesn't make grammatical sense. It all depends on where the center of mass is located and how heavy it is, how quickly it's decelerating, etc. Assuming the center of mass is closer to the rear wheel than the front, the rear brake will be far more effective at lower levels of deceleration when there is/would be virtually no loading of the front forks. You do what you're comfortable with, by all means.
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Old 07-24-2015, 04:26 PM   #44
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Where did I say I know it all? I've rode a Big Dog, the front brakes were great, better at stopping than the rear
A Big Dog like this?

Ridgeback 1

Braking force is relative to traction. Do you honestly think a tire you could mount on a bicycle is going to have enough traction to quickly stop a 600+ lb bike plus a rider?
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Old 07-24-2015, 04:36 PM   #45
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Quote:
Originally Posted by rccarlson22 View Post
Motorcycles exhibit the torque from the rake angle in the forks.

Yeah a cruiser stops different than a sportbike buT again you need your front brakes more than your rear for stopping power.

But if you feel otherwise thats fine, I'll stick to what I know and what works
Rc is correct and all of this drivel about cruisers being rear brake biased is horses#$t. You can't change the laws of physics unless you are a climate scientist.
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Old 07-24-2015, 04:44 PM   #46
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Rc is correct and all of this drivel about cruisers being rear brake biased is horses#$t. You can't change the laws of physics unless you are a climate scientist.
Get em pb
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Old 07-24-2015, 04:45 PM   #47
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You can't change the laws of physics unless you are a climate scientist.
That is exactly my point.
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Old 07-24-2015, 05:39 PM   #48
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I was passing a truck before this happened, stupid yes. Like you have never went over the speed limit. Hard to see with the camera angle but the problem was the truck driver pulled out of the driveway following another vehicle. He did not look when he did this. When he did see me he stopped in the middle of my lane then started off again. It was around a curve so it was hard for each of us to see. I slowed down enough around the turn without sliding out of control. (Im not going to slam on the front brake on a turn)
It's not the hooligan part that's the issue. It's not knowing how to stop the bike. You had all kinds of distance to bring the bike to a stop. Stopping with the front brake isn't "slamming". And then you about the truck...

Read some. Go ride track. You'd be amazed at what the bike is capable of doing under the brakes.
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Old 07-24-2015, 05:44 PM   #49
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Quote:
Originally Posted by Repth View Post
What do you even mean by "exhibit torque from the rake angle in the forks"? That statement doesn't make grammatical sense. It all depends on where the center of mass is located and how heavy it is, how quickly it's decelerating, etc. Assuming the center of mass is closer to the rear wheel than the front, the rear brake will be far more effective at lower levels of deceleration when there is/would be virtually no loading of the front forks. You do what you're comfortable with, by all means.
Man, really?

What happens when you brake? There is weight transfer of the bike and the rider to the front causing the front suspension to compress and the rear to lighten. This is what contributes to the front brakes being more effective than the rears. The same is true in cars. Jeez folks, read some books.
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Old 07-24-2015, 05:49 PM   #50
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Man, really?

What happens when you brake? There is weight transfer of the bike and the rider to the front causing the front suspension to compress and the rear to lighten. This is what contributes to the front brakes being more effective than the rears. The same is true in cars. Jeez folks, read some books.
Of course there is! There's considerably less of that when the center of mass is low and close to the rear of the bike. Perhaps you should read a book... You know, like one on dynamics?
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Old 07-24-2015, 05:58 PM   #51
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If you wouldn't have been rolling so slow you would have been past the drive before the truck even got there, plus you posted this in the Events, Meets and Rides section
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Old 07-24-2015, 06:02 PM   #52
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Quote:
Originally Posted by Repth View Post
Of course there is! There's considerably less of that when the center of mass is low and close to the rear of the bike. Perhaps you should read a book... You know, like one on dynamics?
61F56B12 200C 4D4B 928F 335E71E53432 zpseb9b4th6

That's just a start.

Let's see yours.
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Old 07-24-2015, 06:04 PM   #53
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You really think there is no weight transfer under braking on a bike?

You use the brakes and it pushes you towards the bike of the bike, huh?

Ha ha ha ha. Teach me more.
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Old 07-24-2015, 06:04 PM   #54
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Quote:
Originally Posted by less_than_coop View Post
i do believe on a cruiser more power to the rear brakes is advised.
Well , let's talk about how much braking the trailer should do on an 18 wheeler
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Old 07-24-2015, 06:07 PM   #55
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Quote:
Originally Posted by McMGRAFX View Post
Oh, I know what I was doing wasn't right. But lesson learned(again)
Just though I could post the video to show everyone what can happen when you don't expect it.
Yup, who expects vehicles to actually use driveways?
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Old 07-24-2015, 06:08 PM   #56
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Well , let's talk about how much braking the trailer should do on an 18 wheeler
I agree that heavy bikes require front and rear brakes. They need all the brake force you can muster.

In this case we are talking about a super sport. Appropriate use of the front and the rear tire has virtually no weight on it.
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Old 07-24-2015, 06:10 PM   #57
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They're all PDF's. Like if I was going to lug a backpack full of textbooks to school every day. Not to worry, though, because it doesn't take a high level of understanding about physics to know that the lower the center of gravity, the lower the moment force that results in increased loading of the front suspension. Nobody is debating that the front gets an increased load shifted to it when the center of mass is above neutral. It's pretty clear though that the lower it is, the significantly less effect it will have on load shifting to the front of the bike.
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Last edited by Repth; 07-24-2015 at 06:13 PM.
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Old 07-24-2015, 06:10 PM   #58
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Quote:
Originally Posted by maxgs View Post
You really think there is no weight transfer under braking on a bike?

You use the brakes and it pushes you towards the bike of the bike, huh?

Ha ha ha ha. Teach me more.
Are you even reading what I'm saying?
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Old 07-24-2015, 06:18 PM   #59
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Quote:
Originally Posted by maxgs View Post
I agree that heavy bikes require front and rear brakes. They need all the brake force you can muster.

In this case we are talking about a super sport. Appropriate use of the front and the rear tire has virtually no weight on it.
My point is the bike in the video is a sport bike. Most of the effective braking is on the front.
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Old 07-24-2015, 06:22 PM   #60
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My point is the bike in the video is a sport bike. Most of the effective braking is on the front.
Agreed.
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