littlebrownbike Posted June 2, 2009 Report Share Posted June 2, 2009 I appreciate this forum leans towards chassis dynamics....but I was hoping someone could comment on the below....as this is the "general problems / discussion" section. My car takes 4 seconds to slow from 140mph to 50mph....the rate of deacceleration is 22.5mph/sec or 33ft/sec (in the dry). I'm trying to figure out if this is on par with what is considered normal braking performance? At the time the car weighed approximately 1,600KG and features 320mm front discs with 57mm pistons, and 280mm rear discs with 37mm pistons. To extend this question, in this scenario, how much of an increase, if any, would you see if the car was running the likes of 330mm 4 pot AP brakes... Apologies if this seems like a strange question. Quote Link to comment Share on other sites More sharing options...
hms Posted June 3, 2009 Report Share Posted June 3, 2009 Food for thought. has the car been modified? Does it have ABS Usually the manufacturer will specify brake size to suit the car, over specifying pot size/friction material will cause wheel lock ups. In short, I have no idea! h Quote Link to comment Share on other sites More sharing options...
littlebrownbike Posted June 3, 2009 Author Report Share Posted June 3, 2009 I appreciate that I have a habbit of opening a can of worms. In this scenario, the brakes were not powerful enough to lockup the wheels / engage the ABS. Quote Link to comment Share on other sites More sharing options...
Tony Posted June 3, 2009 Report Share Posted June 3, 2009 Impossible to answer without clinical testing between manafatures.... Historically you simply need to increase friction. High friction pads like reds will just claim to be x% better than OEM, and normally they are. Quote Link to comment Share on other sites More sharing options...
hms Posted June 3, 2009 Report Share Posted June 3, 2009 Seized piston, glazed pads will affect the braking. h Quote Link to comment Share on other sites More sharing options...
littlebrownbike Posted June 3, 2009 Author Report Share Posted June 3, 2009 Seized piston, glazed pads will affect the braking.h I have no reason to believe the brakes are working at any less than 100% efficiency. Quote Link to comment Share on other sites More sharing options...
littlebrownbike Posted June 3, 2009 Author Report Share Posted June 3, 2009 Impossible to answer without clinical testing between manafatures.... Historically you simply need to increase friction. High friction pads like reds will just claim to be x% better than OEM, and normally they are. I have enquired about aftermarket pads and have read mixed reviews, worried about picking the right pad, I stick with OEM. Quote Link to comment Share on other sites More sharing options...
Tony Posted June 3, 2009 Report Share Posted June 3, 2009 Impossible to answer without clinical testing between manafatures.... Historically you simply need to increase friction. High friction pads like reds will just claim to be x% better than OEM, and normally they are. I have enquired about aftermarket pads and have read mixed reviews, worried about picking the right pad, I stick with OEM. Mintex are a good pad on OEM dics Quote Link to comment Share on other sites More sharing options...
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