kb58
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| posted on 18/7/03 at 03:57 AM |
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quote:
Originally posted by suparuss
may have an answer to the thing about haveing more braking force with pre diff braking. in theory the energy in - energy out would suggest that it
would be the same, but think about it- as an unrelated example, if you have say an electric drill with a 2 speed mechanical gear box, put it in low
speed and its harder to stop the the chuck from moving, in high speed its a lot easier because the power source needs more torque to move the chuck-
in the drills case the motor, and in the cars case the momentum of the car moving foreward, the torque is constant at the wheels but is changed by the
gear ratio of the diff t9o move faster but with less torque, so regardless of speed it will be easier to stop?
Good example, but it's the same thing. Fast rotation x little torque, versus slow rotation x high torque = same energy. And in this case of a
drill (cordless) consider how much energy is being drawn from the battery in each case. It's this energy that indirectly heats the brake, and
yes it's the same in either case.
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suparuss
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| posted on 18/7/03 at 05:40 AM |
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im not convinced the speed has anything to do with it, just the torque at the calipers . sure heat is created, but that is constantly variable on a
car any way depending on cooling efficiency and the speed you are going at the time which effects airflow over the disks. more heat is probably made
by moving the disk faster but the brake components are designed to take really high temperatures.
formula 1 cars cant stay standing for too long because with no air flow the heat from the brakes startd to boil the fluid in the pipes.
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Spyderman
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| posted on 18/7/03 at 10:41 AM |
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quote:
Originally posted by suparuss
im not convinced the speed has anything to do with it, just the torque at the calipers . sure heat is created, but that is constantly variable on a
car any way depending on cooling efficiency and the speed you are going at the time which effects airflow over the disks. more heat is probably made
by moving the disk faster but the brake components are designed to take really high temperatures.
formula 1 cars cant stay standing for too long because with no air flow the heat from the brakes startd to boil the fluid in the pipes.
Erm surely stationary F1 cars don't create heat at the brakes!
Sorry couldn't resist that one!
Terry
Spyderman
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suparuss
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| posted on 18/7/03 at 04:04 PM |
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youre kidding right?? after a few full speed laps there is enough heat in the disks and pads so that if the car stands still, since there is no air
flow to cool the caliper, the heat just transmits through the caliper to the pipes. anyone who even watches f1 should know that. 
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Noodle
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| posted on 18/7/03 at 08:27 PM |
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quote:
Originally posted by suparuss
youre kidding right??
Yes, I believe he is.
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MrFluffy
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| posted on 3/8/03 at 10:37 PM |
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underslung caliper
re underslung calipers catching stones etc, and being difficult to bleed.
On my bikes (bimota) has a rear underslung caliper and I believe a few kawasakis do too, it doesnt seem to suffer from seizure from dirt or stones etc
into it though the torque arm anchoring the caliper does cover the intake area of the caliper.
They got round the tough bleeding problem by.... putting the bleed nipples on the top (bottom?) of the caliper...
Again I havent had a problem getting it to bleed up, but if it ever gave me problems or the nipples were in the wrong place id use the cunning highly
tech solution of undoing the mounting bolts and holding the caliper up with a tyre lever where the disc would be.
As for why a underslung caliper, not going there..
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