by "71MGBGT Likes Subarus of Unusual Colors" (adamprotter)
Published 02/21/2017 at 12:00
by "71MGBGT Likes Subarus of Unusual Colors" (adamprotter)
Published 02/21/2017 at 12:00
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I know this idea is dumb, but I’m not sure why. As I understand it, one of the biggest drawbacks of drum brakes is heat dissipation, and one of the biggest problems with ceramic brakes is that they have a hard time getting up to temperature.
What if you use a carbon ceramic material in the drum and insulated it so it stayed up at the optimum temperature. There could be flaps and vents to prevent overheating and you would always have awesome stopping power. This is probably a bad idea, but I’m not exactly sure why.
"Scott" (merl3noir)
02/21/2017 at 12:14, STARS: 1
I guess it depends if your talking for a race car or a road car. I suspect for a road car it would eventually cool down on long drives, and to get the heat up it requires much more breaking than most people would probably feel comfortable with.
On a race car or dedicated track car, I suspect other issues would be the problem. Drums are a lot more complicated to service, are heavier, and probably not nearly as efficient. At least that’s my guess as to why it might not be a great idea.
"ADabOfOppo; Gone Plaid (Instructables Can Be Confusable)" (adabofoppo)
02/21/2017 at 12:14, STARS: 2
Because once it got to temp, it would stay there too long and heat soak.
Disc brakes work because they can dissipate heat so much better than drums. Also braking force it higher since you can put multiple pistons in the caliper. Imagine trying to put multiple actuators in the middle of a drum, it would be huge.
"jimz" (jimz)
02/21/2017 at 12:32, STARS: 2
drums still have the problem of the linings pushing outward, causing the drum to expand. the clamping action of disc brakes eliminates that.
"Textured Soy Protein" (texturedsoyprotein)
02/21/2017 at 12:35, STARS: 2
It’s not only about heat capacity. Drum brakes have a single hydraulic piston attached to a rod that pushes the shoes into the drums. Disc brakes can have multi-piston calipers with different size pistons to more evenly apply braking force across the whole brake pad, which also gives better pedal feedback.
"Party-vi" (party-vi)
02/21/2017 at 12:39, STARS: 4
I would rather fashion my testicles into earrings than repair a drum brake setup mid-race.
"tromoly" (tromoly)
02/21/2017 at 15:26, STARS: 0
Drums don’t necessarily need more pistons, the leading shoe gets pulled into the drum by the drum itself which increases braking performance of that shoe.
That said, the weight of drums on a racing vehicle is unnecessary when discs are a valid option.
"gmporschenut also a fan of hondas" (gmporschenut)
02/21/2017 at 22:59, STARS: 0
its possible. the new s class slightly clamps the brakes every so often, while driving to keep the pads hot and dry. The problem is though, thats in the category of “i don’t care money”. most people wouldn’t like to change pads.drums every 2 weeks.