Paul R Posted April 18, 2004 Share Posted April 18, 2004 Hi, I've just been reading a thread on the MR2 owners club forum. they are arguing about stopping distances (60mph-0mph) of MR2's against bikes - I for one think that a bike would be able to out brake any car because of the weight?? But I dont ride bikes so I could be wrong! Anyway, does anyone know the stopping distances of a mkiv j-spec supra TT and a UK TT? For that matter what are the stopping distances of a tubby? What are the stopping distances of popular bikes? Paul. Quote Link to comment Share on other sites More sharing options...
Guest cptsideways Posted April 18, 2004 Share Posted April 18, 2004 I have a data logger here, If anyone lives on the Dorset/Wilts/Somerset borders & has a spare hour or so we can find out. It's a very accurate peice of kit so we can get some pukka data. Quote Link to comment Share on other sites More sharing options...
Bobbeh Posted April 18, 2004 Share Posted April 18, 2004 I think it was 112 ft from 60mph. (for UK/US spec) (maybe less, I need to find the article again) Anywhere from 112 - 122 ft. Quote Link to comment Share on other sites More sharing options...
Paul R Posted April 18, 2004 Author Share Posted April 18, 2004 isnt 112 foot from 60, only 2.12 seconds? or have a I worked that out wrong? Paul. Quote Link to comment Share on other sites More sharing options...
matt Posted April 18, 2004 Share Posted April 18, 2004 Depends really ......... I can stomp on the soops brakes and at worst the abs will kick in. If I grab a fistful on the bikes ....... its stoppie time!! Surface is a major factor ... Quote Link to comment Share on other sites More sharing options...
Paul Laing Posted April 18, 2004 Share Posted April 18, 2004 A decent Superbike could out brake any car, no problem. Unless of course the cars very light and has 6 pot brakes or bigger.... Paul Quote Link to comment Share on other sites More sharing options...
Paul R Posted April 18, 2004 Author Share Posted April 18, 2004 Originally posted by Paul R isnt 112 foot from 60, only 2.12 seconds? or have a I worked that out wrong? Paul. Is this right guys? Sorry, I'm shite at physics! Paul. Quote Link to comment Share on other sites More sharing options...
matt Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Paul R Is this right guys? Sorry, I'm shite at physics! Paul. No ... you're shite at Maths! Quote Link to comment Share on other sites More sharing options...
Paul R Posted April 18, 2004 Author Share Posted April 18, 2004 Originally posted by matt No ... you're shite at Maths! Whats the bloody answer then smart arse?? Paul. Quote Link to comment Share on other sites More sharing options...
Tannhauser Posted April 18, 2004 Share Posted April 18, 2004 OK, u = initial speed = 60mph = 26.67 m/s v = final speed = 0 m/s x = stopping distance = 112 ft = 34.46 m Using v sq = u sq + 2ax, a = -10.32m/s sq Next, using v = u + at t = 2.58s I make it 2.58s Quote Link to comment Share on other sites More sharing options...
Paul Laing Posted April 18, 2004 Share Posted April 18, 2004 What does all that mean Quote Link to comment Share on other sites More sharing options...
attilauk Posted April 18, 2004 Share Posted April 18, 2004 according to top gear magazine a uk spec can brake from 70 - 0 in 47.5 metres, running that through my very rusty a level maths it works out as 3.06 seconds Quote Link to comment Share on other sites More sharing options...
Tannhauser Posted April 18, 2004 Share Posted April 18, 2004 It means you should have listened in Physics, young man, instead of dreaming about cars. Edited to say the above is a reply to Paul, not Attila UK Quote Link to comment Share on other sites More sharing options...
matt Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Tannhauser It means you should have listened in Physics, young man, instead of dreaming about cars. Ahem!! I thought we'd established it was applied math??!! Quote Link to comment Share on other sites More sharing options...
Terminator Posted April 18, 2004 Share Posted April 18, 2004 Very few road cars have better stopping power than the MKIV on UK brakes. Quote Link to comment Share on other sites More sharing options...
Trig Posted April 18, 2004 Share Posted April 18, 2004 On J spec brakes i think the stopping time is about 2 weeks and 2 days! Quote Link to comment Share on other sites More sharing options...
Timwildman Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Terminator Very few road cars have better stopping power than the MKIV on UK brakes. Especially if you think your driving a manual car, and put both feet on the pedal:innocent: Quote Link to comment Share on other sites More sharing options...
matt Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Timwildman Especially if you think your driving a manual car, and put both feet on the pedal:innocent: Scooter ....... care to comment? Quote Link to comment Share on other sites More sharing options...
Digsy Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Tannhauser OK, u = initial speed = 60mph = 26.67 m/s v = final speed = 0 m/s x = stopping distance = 112 ft = 34.46 m Using v sq = u sq + 2ax, a = -10.32m/s sq Next, using v = u + at t = 2.58s I make it 2.58s Over 1g sounda a bit high to me. Would have expected slightly less. (And it's physics - linear motion equations ) Quote Link to comment Share on other sites More sharing options...
Paul R Posted April 18, 2004 Author Share Posted April 18, 2004 Originally posted by Tannhauser It means you should have listened in Physics, young man, instead of dreaming about cars. Edited to say the above is a reply to Paul, not Attila UK That formula you used there means bugger all to me!! What happened to distance over speed = time??? I really am a clueless git when it comes to maths! Probably why I'm a programmer! Paul. Quote Link to comment Share on other sites More sharing options...
Tannhauser Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by matt Ahem!! I thought we'd established it was applied math??!! That's the Royal 'we', presumably. Quote Link to comment Share on other sites More sharing options...
Tannhauser Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Paul R That formula you used there means bugger all to me!! What happened to distance over speed = time??? I really am a clueless git when it comes to maths! Probably why I'm a programmer! Paul. It would help if I had figured out how to write 'V squared' properly, with a '2' as superscript, instead of 'V sq'. But anyway you're too hard on yourself, just because you're not familiar with the equations doesn't mean you're rubbish at maths. If you can program a computer, you could definitely do this sort of stuff. Quote Link to comment Share on other sites More sharing options...
Steve Cargill Posted April 18, 2004 Share Posted April 18, 2004 When I had my MR2 Turbo the G-Tech pro meter measured it atr 125 feet. That was in the dry with Marshall (read carp) tyres. WTF to people, lots of magazines seem to do it, talk about stopping time in seconds, surely it's distance that is important. Quote Link to comment Share on other sites More sharing options...
Jake Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Tannhauser It would help if I had figured out how to write 'V squared' properly, with a '2' as superscript, instead of 'V sq'. But anyway you're too hard on yourself, just because you're not familiar with the equations doesn't mean you're rubbish at maths. If you can program a computer, you could definitely do this sort of stuff. Like this : V² (Alt + 0178) Quote Link to comment Share on other sites More sharing options...
Digsy Posted April 18, 2004 Share Posted April 18, 2004 Originally posted by Steve Cargill WTF to people, lots of magazines seem to do it, talk about stopping time in seconds, surely it's distance that is important. Well they wil lbe linked, but stopping diatance is probably more relevant. BTW, did you know that the stopping distances in The Highway Code are based on a deceleretion of only -6.5m/s squared? Hardly "state of the art." Quote Link to comment Share on other sites More sharing options...
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