Need to record 60 to 0 times for brake caliper comparisson

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Old Jul 31, 2008 | 09:00 AM
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Default Need to record 60 to 0 times for brake caliper comparisson

Anyone in or near Houston have a drift box? I got a set of the Force 10 calipers from Stainless Steel Brake Co. & I want to do before & after braking tests to determine how much these improve stopping.

I need a way to measure my 60 to 0 times & figured a drift box could possibly log this data. If anyone else has a suggestion as to other methods of recording this I'd appreciate hearing from you.
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Old Jul 31, 2008 | 09:04 AM
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You could measure stopping distance from a given speed and determine the time it took.
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Old Jul 31, 2008 | 09:09 AM
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If I had a track I could probably do it much easier because I could have a designated 'start' cone & maybe something like a rubber hose that when I run over I start braking, but it seems to me, something like a drift box could possibly be more accurate with the data log.

Maybe I need to find a large parking lot where I can get up to 60mph safely & have plenty of stopping room.
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Old Jul 31, 2008 | 09:16 AM
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Finding an empty parking lot would be your best bet. I'd recommend doing several hard stops back to back to see how the heat changes the braking performance. As for the stop watch and speed, that would work if you assume your decel to be constant which it may or may not be. I'd setup a start cone or rubber hose as you said to start, and stop the car, have someone setup a cone or chalk outline the stopping point and measure the distance. Be interesting to see the difference between the two brake setups!
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Old Jul 31, 2008 | 09:55 AM
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one of those gforce g-meter things might do it
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Old Jul 31, 2008 | 03:39 PM
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Given the same tire, tire pressure, rotor demensions, fluid purity and pad compound, a caliper alone won't make any difference.

Friction is all that matters. So, get a more aggressive pad compound or stickier tire compound or more road contact patch.

A 4 piston caliper will give you more clamping force, but with the same pad and tire compound, you can lock up the wheels with old single piston calipers.

The benefit of a 4 piston caliper is uniform clamping force and a fixed design. Allows for better pad wear, better heat dissipation under extreme conditions and generally easier pad change-out.

When I had 4 piston Brmebos on my old 98 street car, it took more time to remove the wheel than it did to change brake pads.
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