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Great Plains & Rocky Mountains
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Old 06-15-2012, 03:29 PM   #15601
Rubenk
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http://www.ajdesigner.com/phpenergyk...y_equation.php

16,000lb at 55mph kinetic energy (K) = 2,193,683 joule
3100lb at 130mph kinetic energy (K) = 2,374,525 joule
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Old 06-15-2012, 03:31 PM   #15602
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We sure could

.5*22.35^2*7257.48= 1,812,637.28 joules

.5*58.1^2*1515 = 2,557,024.575 joules

Last edited by Andy2108; 06-15-2012 at 03:37 PM.
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Old 06-15-2012, 03:32 PM   #15603
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orly?
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Old 06-15-2012, 03:32 PM   #15604
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wait, KE is (.5) (mass) (velocity)

did you convert to SI units instead of British?
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Old 06-15-2012, 03:34 PM   #15605
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Oh, its v^2. forgot about that part.
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Old 06-15-2012, 03:36 PM   #15606
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I have squeezed 65mph out of it a few times and it was terrifying, here is the KE for that.

kinetic energy (K) = 3,063,904 joule

"2,259,819 foot-pound" makes it seem even crazier

Last edited by Rubenk; 06-15-2012 at 03:37 PM.
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Old 06-15-2012, 03:38 PM   #15607
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the reason I brought up speed was because within the equation for KE, velocity is squared and therefore is relatively more important than mass.

I figured 50mph because I read it was gear limited at 48 or something once.
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Old 06-15-2012, 03:40 PM   #15608
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the reason I brought up speed was because within the equation for KE, velocity is squared and therefore is relatively more important than mass.

I figured 50mph because I read it was gear limited at 48 or something once.
factory "cruise" speed is 48, it does 55 comfortably, just depends on how many RPM's you want to turn. 55mph is 2600rpms which is the argued safe-limit, however I have had it on the 2900rpm governer plenty.
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Old 06-15-2012, 04:12 PM   #15609
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Brad my car was still making the scraping noise. Maybe that drivers side rear caliper is stuck and that's what boiled my fluid.
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Old 06-15-2012, 05:16 PM   #15610
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If you boiled your fluid then you have got to be braking wrong. James couldn't boil mine with slicks and you are on street tires. Just saying, something doesn't add up. You need to get a data system so you really know what's going on.
Andy-What pads are you running?
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Old 06-15-2012, 05:20 PM   #15611
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Brad

You know if you sell your car you "have to" buy another or you will waste your sales tax credit which is around 3K+

just get something like a M6...
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Old 06-15-2012, 06:19 PM   #15612
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Andy-What pads are you running?
PFC-06's on oem blanks. Tires are RE-11's at 245 front and 275 rear.
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Old 06-15-2012, 06:24 PM   #15613
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You shouldn't be able to boil fluid with those...
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Old 06-15-2012, 09:01 PM   #15614
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Brad brought up "I shouldnt be able to boil it unless I'm doing something wrong" which may be possible. Or I could have a stuck caliper on my drivers side rear...
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Old 06-15-2012, 09:32 PM   #15615
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its 600 and its 10 months old. I think I boiled it, either that or something is SERIOUSLY wrong with my brakes.

Towards the end of the day, they switched to open track. I was going to go out for maybe another 20-30 minutes before the sun went down. I hit the brakes down in the staging area to talk to the guy real quick. Absolutely nothing happened, my car kept rolling at 3mph. I hit what felt like the bottom of my pedal and the car/brakes made this horrible "clunk clunk" noise and I came to an instant stop. I then turned to the guy and said "my brakes just went to the floor, I think I'm done for the day". turned around and went back up to go home.

I thought about the data thing. It would be really cool to have. For now all I have is video.
I'm not saying that you didn't boil your fluid, what I'm saying is you shouldn't have. I know dudes that race at road America for 40+ minutes with stock brakes and don't have issues. My bet is you are over braking or braking to early and not hard enough initially which would increase the heat. Something is not right though, you shouldn't be having any issues with pfc pads and motul fluid.
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Old 06-16-2012, 01:09 AM   #15616
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Off roading in a unimog tomorrow wheeeee
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Old 06-16-2012, 01:11 AM   #15617
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I'm not saying that you didn't boil your fluid, what I'm saying is you shouldn't have. I know dudes that race at road America for 40+ minutes with stock brakes and don't have issues. My bet is you are over braking or braking to early and not hard enough initially which would increase the heat. Something is not right though, you shouldn't be having any issues with pfc pads and motul fluid.
Understood.

My braking is pretty aggressive, I think. I'm pretty sure I was feeling some very light abs almost all the time. I don't ride the brakes.

My fluid is about 10 months old. It is a darker color. I suppose the booster could be the issue. I honestly haven't driven the car more than 10 feet since I got home on Wednesday.
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Old 06-16-2012, 07:25 AM   #15618
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Off roading in a unimog tomorrow wheeeee
Hell yea! Pics or it didnt happen.
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Old 06-16-2012, 10:30 AM   #15619
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Just wanted to check in, new member, new bummer owner in kcmo
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Old 06-16-2012, 11:58 AM   #15620
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