Seen on the forums...

"MLGCarGuy" (thejdmguy) 04/17/2016 at 13:35 • Filed to: None

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I’m not trying to insult this guy by any means as he has a very respectable RC F build, but really? CCBs increase horsepower?

BvdV - The Dutch Engineer > MLGCarGuy 04/17/2016 at 13:37

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Yeah, just like stickers, and painted calipers do! Try it out, you will really notice the difference!

Which is probably what that dude believes.

StoneCold > MLGCarGuy 04/17/2016 at 13:46

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I know that bad brakes can affect the amount of horsepower at the wheel because of brake drag, but what brakes don’t have the pistons pull off instead of being kicked off by the rotor? I thought that went extinct in the 90's.

Twingo Tamer - About to descend into project car hell. > MLGCarGuy 04/17/2016 at 13:48

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They might very marginally affect power delivery due to the lower rotating mass but 9hp? GTFAC.

TheTurbochargedSquirrel > MLGCarGuy 04/17/2016 at 13:48

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Brake Horsepower does not mean what he thinks it means.

DasWauto > Twingo Tamer - About to descend into project car hell. 04/17/2016 at 13:59

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A ~0.25% gain from significantly lower rotating mass is not unrealistic. If he was claiming 9hp gain on a 100hp econobox I’d be with you but on a 400hp car it’s not out of the realm of possibility.

Twingo Tamer - About to descend into project car hell. > DasWauto 04/17/2016 at 14:03

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Well the mass shouldn’t affect peak HP at all, only how quickly the wheels rotational speed increases.

-this space for rent- > Twingo Tamer - About to descend into project car hell. 04/17/2016 at 14:14

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What do you think horsepower is?

If you increase the rate of work done you’re increasing HP.

DrJohannVegas > Twingo Tamer - About to descend into project car hell. 04/17/2016 at 14:40

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The tricky thing is that the dyno (if it’s Mustang) calculates the angular acceleration of a known mass (the roller) to get a torque estimate, then backs out a power estimate from that. So, reducing rotating mass in the driveline means less net mass for the engine to accelerate, which may skew the numbers a bit.

DrJohannVegas > StoneCold 04/17/2016 at 15:26

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If there’s a difference as claimed, it’s because of how the dyno measures force (and thus calculates work). Basically, less rotating mass in the driveline means the engine accelerates the drum (the reference mass) faster, so the numbers go higher.