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Car Forum / Citroen Cars / April 2004Stopping Distances
Hi, Does anyone know what the stopping distances are for the Xsara Picasso?  SignatureSparky Mark www.fancyatakeaway.net www.moglesby.karoo.net ~~~~~~~~~~~~~~~~~~~ Strange question surely; if the brakes are ok then it is Newton's laws plus a little improvement for the effect of high hysterisis tyres. basically you stop at 32 ft/sec/sec. So at 60 mph or 88 ft/sec, S = 88*88 /32/2 = 121 ft. With a dry road , good surface, and new modern tyres you can, in theory, achieve 1g decelleration. jeff > Hi, > Does anyone know what the stopping distances are for the Xsara Picasso? > Does anyone know what the stopping distances are for the Xsara Picasso? If all goes well, slightly shorter than those of the car in front. What tyres, what surface, what weight of load, what brand of brake pads etc etc? They'll all make a big difference. If you *really* need to know, there's only one way to find out. It involves a tape measure. > > Does anyone know what the stopping distances are for the Xsara Picasso? > [quoted text clipped - 5 lines] > > It involves a tape measure. Well, it's actually a mate of mine, just got a new Picasso, and says at 30mph, he can stop in under 30ft, in the wet, and fully laden. and it sounded a bit incredible to me. SignatureSparky Mark www.fancyatakeaway.net www.moglesby.karoo.net ~~~~~~~~~~~~~~~~~~~ > Well, it's actually a mate of mine, just got a new Picasso, and says at > 30mph, he can stop in under 30ft, in the wet, and fully laden. and it > sounded a bit incredible to me. Bear in mind the highway code reckons 14m (42ft), and that's not changed since the 60s. IIRC, it's based on a drum braked Ford Anglia... A Picasso might be a lardy great big thing compared to that, but the brakes will be a LOT better. The ABS/EBD/EBA electronics will make a big difference, as well as the big discs compared to the Anglia's tiny un-servoed drums. Road surfaces now are a lot grippier than they were then, too. It's probably very likely in the dry, lightly loaded. In the wet, fully loaded? Hmm. Possible, I s'pose, depending on his definition of wet and loaded. However, the thinking distance **hasn't** shrunk. If anything, it's probably grown, since 30 feels a lot slower in something big and soft and comfy and warm and new and invincible and airbagged and ABSed than it would in an Anglia. If he's using that 30ft as justification to drive like a knob half an inch off the back of somebody else, then he's a cretin, and nowhere near as immortal as he'd like to think. > If he's using that 30ft as justification to drive like a knob half an > inch off the back of somebody else, then he's a cretin, and nowhere near > as immortal as he'd like to think. LOL! I love those ones - my commute involves three *big* speed bumps, if I pick up a cretin I stick at exactly 30mph with them glued to the back bumper, I then waft nicely over the speed bump... ...while they do a passable impersonation of a pinball... CAS -- "The measure of a man's wealth is the fewness of his wants" - Jack Mullholand >> If he's using that 30ft as justification to drive like a knob half an >> inch off the back of somebody else, then he's a cretin, and nowhere >> near as immortal as he'd like to think. > LOL! I love those ones - my commute involves three *big* speed bumps, > if I pick up a cretin I stick at exactly 30mph with them glued to the > back bumper, I then waft nicely over the speed bump... > > ...while they do a passable impersonation of a pinball... Ah, I miss my CX.... The 2cvs are good at it, but not a patch on the CX. I was the subject of a letter to a local paper once, complaining about the fact my bright Orange Mehari was seen going over speed humps at - shock, horror - the speed limit... > >> If he's using that 30ft as justification to drive like a knob half an > >> inch off the back of somebody else, then he's a cretin, and nowhere [quoted text clipped - 11 lines] > fact my bright Orange Mehari was seen going over speed humps at - shock, > horror - the speed limit... Best feeling in the world - knowing that the feds have tried to slow you down and it makes not a blind bit of difference! I've tested the XM over all types of speed bump... - Big flatties - a nice "up-and-over" feeling, no jarring, no noise, no need to slow down - Sleeping Policemen - thudthud, no vertical movement, no jarring, no need to slow down. - Rubber squares - hit them perfectly square or get right in the middle of two and you don't even feel them! Hydropneumatic Suspension - the curse of the traffic calmer! ;-) CAS -- "The measure of a man's wealth is the fewness of his wants" - Jack Mullholand > Hydropneumatic Suspension - the curse of the traffic calmer! ;-) My local B&Q has a long straight private road leading to it. There's no speed limit as such, but they've puts loads of speed bumps in. One night as I was leaving the carpark the driver of a Frontera went out of his way to push in front, although it was my right of way. I was stuck behind him and at each speed bump he slammed his brakes on and slowed down to a crawl, dropping into first gear by the looks of it. Other than the two of us the road was deserted, so I calmly pulled out and overtook. The look on the Frontera driver's face was a picture, he suddenly accelerated to try and stop me getting past, so I accelerated even more. By the next speed bump we were doing about 45 mph, the Xantia just glided over it, whereas the Frontera practically became airborne ! He slammed the brakes on again, and my last view of him in the mirror was the Frontera going over the next bump at about 5 mph again :-) Nick Message i.d.:<news:c4cede$2gulu3$1@ID-148918.news.uni-berlin.de>, by author Nick Read aka <me7@privacy.net> inspired me, >> Hydropneumatic Suspension - the curse of the traffic calmer! ;-) > [quoted text clipped - 14 lines] > again, and my last view of him in the mirror was the Frontera going > over the next bump at about 5 mph again :-) Whoehaha. Great story! Great Cits, great suspension. SignatureJohan; Certifiable me; Reply to Hotm ail No, I am not demented, just gray haired > Whoehaha. Great story! > Great Cits, great suspension. Well, it certainly made me smile at the time! Nick > > Hydropneumatic Suspension - the curse of the traffic calmer! ;-) > [quoted text clipped - 4 lines] > > Nick Ah, that makes my morning! Big 4x4 thing, designed for off-road bumpy stuff... Citroen Xantia, repmobile... ...and some people wonder why we buy 'em! Vive la Citroen! CAS -- "The measure of a man's wealth is the fewness of his wants" - Jack Mullholand > Ah, that makes my morning! Big 4x4 thing, designed for off-road bumpy > stuff... Citroen Xantia, repmobile... > > ...and some people wonder why we buy 'em! What's even funnier is that Fronties are crap offroad, too.... <grin> 2cv 4x4 MOTd this morning.... Time to get muddy! > What's even funnier is that Fronties are crap offroad, too.... I don't think I've ever heard anyone say anything positive about the Frontera. The general consensus seems to be 'Crap onroad, crap offroad' :-) > 2cv 4x4 MOTd this morning.... > > Time to get muddy! Sounds fun. When I lived on a farm I used to go offroading in my old BX diesel quite a bit! I always wanted a BX 4x4, but the technical problems and relative fragility of the gearbox scared me off from buying one. Nick >> 2cv 4x4 MOTd this morning.... >> >> Time to get muddy! > Sounds fun. It is... http://www.2cv4x4.com - ours is the dark grey one. > When I lived on a farm I used to go offroading in my old > BX diesel quite a bit! I always wanted a BX 4x4, but the technical > problems and relative fragility of the gearbox scared me off from > buying one. I think you may have made the right move...
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