The link below brings you to a very nifty Microsoft Excel spreadsheet which automatically calculates your braking requirements and upgrade to generate the ultimate stopping power you aspire to. The tool even calculates for you the weight transfer under braking for your car, how much stopping power you are generating at each end of your car and even possible caliper piston sizes vs master cylinder ratio. So if you even wondered whether this 10 piston caliper with 40mm diameter pistons and 350mm diameter rotor will suit you car with a 1" master cylinder use this tool. Fab stuff! I spent countless time playing with the thing.
Race Tech's Braking Model
For starters try this. Stock GTi/Putra uses a single piston sliding caliper with a 54mm diameter piston, 256mm front rotor/260mm rear rotor and 15/16" or 23.8125mm master cylinder. The EVO1-3's twin piston caliper uses twin 42.9mm pistons, 276mm front rotor/260mm rear rotor and 1" or 25.4mm master cylinder. First person to calculate the difference in piston area for the Putra vs the EVO1-3 and the disc/rotor torque on one wheel assuming both use the same coefficient friction pads wins a free teh tarik from me :)
And pls.. Getting your stock rotors drilled will not give you more stopping power. Period! It will only make the shop drilling your rotors richer at the expense of your money.
9 comments:
Hi andrew. Sorry abt the non-relevant comment, but could you direct me to where i can buy aluminium alloy tubing in the klang valley?
do reply to durifto@gmail.com thanks
Bro,
No idea bout the Klang Valley man. Maybe Jacko might have a clue. BTW, what type of aluminium are you looking for?
yo jacko.. i lost ur hp since i changed phone. what say we catch up over lunch sometime?
btw... was looking at fabricating a rear 4-point strut bar for my car. Looking for some affordable alum alloy that's stronger than pure alu. Any suggestions?
Jacko,
U sure 7075 is avail in Malaysia? Last time I had to get it from S'pore..
Hi,
Love your blog coz learn loads of stuff here. I am from PG also, wanna hook-up coz i wanna learn more from you.
KH
Hook up? Sure, if I can find the time. Not much of that left nowadays lar.
Hello,
Great info on here pages, pity you're not writing much on this blog recently.
Anyway, I've been playing around with the calculator as well and have pretty much nailed most of the target braking torque figures, albeit at line pressures higher than 7 million MPa.
I then had a look up Goodridge's catalogue for burst pressures of their hardlines and hoses and there is definitely the safety margin there to exceed 7 bars. Is there any particular region for the limit? Pedal feel, perhaps?
Cheers, Alex
typo: "reason", not "region"
My apologies
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