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Floating an Idea Re: Brakes

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Floating an Idea Re: Brakes

Old 04-15-14, 10:00 AM
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mlander
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Floating an Idea Re: Brakes

In the interest of saving weight, why not remove the rear brake then beef up the front brake to the tune of half the weight of the removed rear? I can't think of a situation where both brakes are necessary. In ten years of operating a motorcyle I hardly ever use the rear. I'm not experienced as many of you. Plausible?
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Old 04-15-14, 10:03 AM
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Originally Posted by mlander View Post
I can't think of a situation where both brakes are necessary.
It can come in handy if one of the brake cables snaps. And the rear brake is nice to have on gravel or other low-friction surfaces where you don't want to risk a front wheel slide.
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Old 04-15-14, 10:08 AM
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Originally Posted by mlander View Post
In the interest of saving weight, why not remove the rear brake then beef up the front brake to the tune of half the weight of the removed rear? I can't think of a situation where both brakes are necessary. In ten years of operating a motorcyle I hardly ever use the rear. I'm not experienced as many of you. Plausible?
You would sacrifice safety for a few grams? Are you crazy? Who are you that needs to save a few grams? Are you that aero and insanely good that it would make even .0000000000000000000000000000000001% difference?
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Old 04-15-14, 10:21 AM
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Instead, just skip dinner one night.
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Old 04-15-14, 10:22 AM
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Note that cars have larger/better front brakes than rear brakes. And note that on most motorcycles, the rear brake is much smaller than the front (often single small disc compared to double very large disks in the front). This reflects the fact that "stopping power" is dominated by the front brake and is entirely due to the front brake under maximum possible braking on surfaces with very good traction. In situations of lesser traction, the rear can make more of a contribution as their is less weight transfer to the front wheel.

Mtbs often have larger discs in the front than the rear. Something similar could be done for road bikes, but in the case of rim brakes, only the calipers and pads would be effected which wouldn't allow much opportunity to reduce weight.
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Old 04-15-14, 10:22 AM
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Originally Posted by zymphad View Post
? Are you that aero and insanely good that it would make even .0000000000000000000000000000000001% difference?
Nope, not even nearly. Just a thought. In my heading I said I was only floating an idea.

But, I would wager that folks sacrifice safety for weight all the time. Someone had to ride the first fully carbon wheels. I've seen guys with so few spokes that if one breaks, they're in for some pain. Google Rollie Free. There's a famous image of him setting a motorcycle speed record in speedos. Leathers would slow him down.

Do I agree with this? No. I didn't think about redundancies for safety. So, yeah, my idea is admittedly unsound.

Also, I just hammered out a quick calculation. The difference made would be 00000000000000000000000000000001% not 0000000000000000000000000000000001%. But you were close.
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Old 04-15-14, 10:41 AM
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campy gives you an option to use a lighter single pivot rear that is lighter. The problem on road bikes is not generally braking power, its pretty easy to lock up the brakes, its traction and heat dissipation. Having only a front brake would be detrimental on long descents where you can't spread the braking power over both wheels.
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Old 04-15-14, 10:58 AM
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Obviously there's a "failsafe redundancy factor." Things do break, and if the brake breaks, well...
The other implied question is "when do you want TWO brakes?"
While we don't tend to think this way, a lot of wattage is getting tossed around in that braking system and each system has limited capacity. Rims get hot, pads get hot, cables get stressed, debris flies around. No, not in the parking lot. But when you're enjoying a hard-earned coast down the backside of a 1000' climb, headed toward that eventual intersection, and you notice that you're well north of 35 mph, you really start to think differently about your brakes, and how much you really are glad you have good ones.
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Old 04-15-14, 11:02 AM
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I took both brakes off. I just leave an old mattress in the yard and end all my rides by crashing into it. If I ever get in an emergency I will just ride to the nearest boat launch and go in the drink.
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Old 04-15-14, 11:24 AM
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Originally Posted by canam73 View Post
I took both brakes off. I just leave an old mattress in the yard and end all my rides by crashing into it. If I ever get in an emergency I will just ride to the nearest boat launch and go in the drink.
This is just silly. If you just end every ride on an uphill, there is no need for the mattress. Other than sleeping. Or bouncing. Or...... quilting?
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Old 04-15-14, 11:30 AM
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what if you just carry a stick with you (balsa wood, of course) to throw into the spoke in case of emergency?
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Old 04-15-14, 11:31 AM
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Bladed spokes eat sticks for breakfast, and crap out toothpicks.
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Old 04-15-14, 11:34 AM
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If you really want to save some weight, cut the seat stays off and drill holes in the seat post.
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Old 04-15-14, 11:34 AM
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Fixie. Just sayin'.
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Old 04-15-14, 11:59 AM
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I like to have 2 brakes. I use the rear brake to stop when I get a front flat and use
the front brake when I get flat in the rear. Same deal with motorcycles/scooters.



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Old 04-15-14, 12:14 PM
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Front brake only?? Don't forget to "float" the idea of dentures.
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Old 04-15-14, 12:31 PM
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I like the idea of two brakes! I've had a few close calls both avoiding falling cyclists and was glad to have the stopping power. As a matter of fact, I would love to build up a road frame with disc brakes.
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Old 04-15-14, 12:33 PM
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Originally Posted by mlander View Post
In ten years of operating a motorcyle I hardly ever use the rear. Plausible?
No.
As a motorcyclist you may have taken the MSF Basic Rider's course and learned that 70% of potential braking is in the front. However in setting up for a corner the rear brake is used to modulate speed before the apex weighting the front to get maximum traction from the front tire's contact patch without exceeding the limits of adhesion.

On loose surfaces it's best to have a bit of a rear wheel brake induced slip than a low-side crash using the front.

In a full-on emergency stop both are necessary.

Bicycles: Same, same.

-Bandera
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Old 04-15-14, 12:49 PM
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wow at this thread, SMH.
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Old 04-15-14, 12:55 PM
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Originally Posted by yote223 View Post
Front brake only?? Don't forget to "float" the idea of dentures.
As a preface, the Op's idea is bad for many of the reasons previously stated.

But this isn't one of them. The idea that using the front brake alone will flip the bike is a misnomer, which comes from improper positioning on the bike.

Going over the bars by Jobst Brandt

Put your weight far enough back, and you can use all the front brake you have without flipping.
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Old 04-15-14, 01:04 PM
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Originally Posted by merlinextraligh View Post
As a preface, the Op's idea is bad for many of the reasons previously stated.

But this isn't one of them. The idea that using the front brake alone will flip the bike is a misnomer, which comes from improper positioning on the bike.

Going over the bars by Jobst Brandt

Put your weight far enough back, and you can use all the front brake you have without flipping.
or until your front tire washes out.
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Old 04-15-14, 01:06 PM
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Or you can just buy brakesets that weigh as much as the average caliper:

THM Fibula Carbon Road Brake Set : Fairwheel Bikes, Cycling Boutique
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Old 04-15-14, 01:13 PM
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Both calipers are needed for rainy rides.
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Old 04-15-14, 01:16 PM
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Originally Posted by bt View Post
or until your front tire washes out.
If you're braking in a turn to the point your front wheel washes out, you're doing it wrong.
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Old 04-15-14, 01:29 PM
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Originally Posted by Elvo View Post
Or you can just buy brakesets that weigh as much as the average caliper:

THM Fibula Carbon Road Brake Set : Fairwheel Bikes, Cycling Boutique
holy crap!!!
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