Archived posting to the Leica Users Group, 2009/07/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Depends on circuit layout. An F1 car would certainly go quicker than a Veyron if the circuit layout required it, or if the car was set up purely to demonstrate the top speed possible, as the Veyron surely was to achieve its written spec speed (special tyres, pressures, low oil level super low viscosity gearbox oil etc). In fact in racing using a high top speed is rarely the fastest way round a circuit (probably never in fact). Of the current circuits only Monza is worth trying a low drag setting, and I have never found it to give a better lap time. Also, I bet an F1 car is at its top speed somewhat more frequently than any Veyron :-) so it is less of an academic point. A lot of tweaks are used for "spec writing" road carswhich will never be applicable to a customer car. cheers, Frank On 13 Jul, 2009, at 17:55, simon jessurun wrote: > top speed? > > On Mon, Jul 13, 2009 at 7:01 PM, Frank Dernie > <Frank.Dernie at btinternet.com>wrote: > >> In what way is the Bugatti faster than an F1 car? There is a >> possibility >> the initial acceleration may be more consistent ddue to the >> electronics >> (banned in F1) and maybe 4WD but after that nowhere :-) Example F1 >> car 0-100 >> kph between 2.5 secs and 3.0 secs depending on tyre and track >> surface, but >> then 100 kph to 200 kph is about 2.3 secs, Bugatti nowhere near of >> course. >> Braking and cornering the Bugatti is pretty rubbish even compared >> to quite >> a few road cars, though it mainly depends on which tyre the road >> car is >> using. >> Frank >> >> Frank >> >> On 13 Jul, 2009, at 14:07, simon jessurun wrote: >> >> Still not bad the Bughatti is quite a bit faster then a F1 car. >> 0.02 simon >>> >>> On Mon, Jul 13, 2009 at 3:36 PM, Jim Hemenway <Jim at hemenway.com> >>> wrote: >>> >>> Frank: >>>> >>>> I had a hard time affording it too. Had to have an extra job >>>> just to >>>> make >>>> payments. >>>> >>>> Even though the car was only three years old, the price was much >>>> lower >>>> than >>>> it otherwise should have been. >>>> >>>> It had some water damage because it had been left outside with >>>> the top >>>> down >>>> for a long time. In addition, the blue paint had worn/faded away >>>> very >>>> quickly, leaving bare aluminum in many places. >>>> >>>> Still, it was a lot of fun for a young man. >>>> >>>> Jim >>>> >>>> >>>> Frank Dernie wrote: >>>> >>>> Fun car! I couldn't afford a sortscar until I was in my 40s but >>>> have had >>>>> 3 >>>>> since. >>>>> The problem with Whitworth (and BA) threads was the >>>>> standardisation >>>>> maniacs. We ended up with Unified (inch sizes) and Iso metric, >>>>> neither >>>>> of >>>>> which are as technically sound as Whitworth BA and BSF in >>>>> threadform or >>>>> suitableness but appealed to the neat minded regulators with 60 >>>>> deg >>>>> threads >>>>> and nice integer thread per inch rules. Then there were a whole >>>>> bunch of >>>>> parts which people often did not have the correct taps, dies and >>>>> spanners >>>>> for. >>>>> As an engineer who had to re-engineer bolted junctions to use >>>>> unified >>>>> threads i can attest that direct replacement resulted in a >>>>> inferior >>>>> joint, >>>>> and redesign resulted in heavier bulkier solutions. >>>>> Frank >>>>> >>>>> On 13 Jul, 2009, at 04:36, Jim Hemenway wrote: >>>>> >>>>> Not a Jensen Healey, but here's Barbara, my 1956 Austin Healey >>>>> and me in >>>>> >>>>>> 1959. >>>>>> >>>>>> A lot of fun but what a pain in the neck to fix... damn >>>>>> Strombergs and >>>>>> even more damned Whitworth threads! >>>>>> >>>>>> http://www.hemenway.com/AustinHealey.jpg >>>>>> >>>>>> Jim, "I haven't looked like that for such a long time." Hemenway >>>>>> >>>>>> >>>>>> >>>>>> Robert Clark wrote: >>>>>> >>>>>> I used to drive my uncle's 1974 Jensen Healey...with the Lotus >>>>>> engine, >>>>>>> a >>>>>>> Vauxhaul gearbox (I believe), along with two Stromberg >>>>>>> carbs...like a >>>>>>> little >>>>>>> rocket and I always loved it. Was my intro to what a sports >>>>>>> car was >>>>>>> and I've >>>>>>> never gotten over it! Being 17, driving that with the cute >>>>>>> girl down >>>>>>> the >>>>>>> road, and feeling the acceleration of the car was magical! >>>>>>> Robert Clark >>>>>>> Lancaster, PA >>>>>>> ----- Original Message ----- From: "Frank Dernie" < >>>>>>> Frank.Dernie at btinternet.com> >>>>>>> To: "Leica Users Group" <lug at leica-users.org> >>>>>>> Sent: Saturday, July 11, 2009 1:38 AM >>>>>>> Subject: Re: [Leica] speaking of cars violently OT >>>>>>> >>>>>>> Try an Elise. >>>>>>>> Frank >>>>>>>> >>>>>>>> On 11 Jul, 2009, at 06:06, Adam Bridge wrote: >>>>>>>> >>>>>>>> I had a Lotus S2 - two 2-barrel Webers. It was a RIP to drive >>>>>>>> but >>>>>>>> >>>>>>>>> needed >>>>>>>>> lots of TLC as cars of that era did. >>>>>>>>> I loved the close-ratio gearbox and how it would leap ahead >>>>>>>>> with the >>>>>>>>> slightest urging. Stopped darn well too! >>>>>>>>> >>>>>>>>> Of course it would never pass today's crash tests but I'd >>>>>>>>> love a >>>>>>>>> modern >>>>>>>>> Lotus roadster to be a retake on the Elan. The top can leak, >>>>>>>>> that's >>>>>>>>> okay! >>>>>>>>> >>>>>>>>> Adam >>>>>>>>> >>>>>>>>> On Fri, Jul 10, 2009 at 9:33 PM, Frank Dernie >>>>>>>>> <Frank.Dernie at btinternet.com>wrote: >>>>>>>>> >>>>>>>>> The Elan S4 was a favourite of mine. It had Stromberg carbs >>>>>>>>> which >>>>>>>>> >>>>>>>>>> gave more >>>>>>>>>> power and broader torque band than the more fashionable >>>>>>>>>> Webers, and >>>>>>>>>> better >>>>>>>>>> fuel consumption. It was surprisingly roomy for such a tiny >>>>>>>>>> light >>>>>>>>>> car. >>>>>>>>>> Frank >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On 11 Jul, 2009, at 00:42, Jerry Lehrer wrote: >>>>>>>>>> >>>>>>>>>> Dennis und Frank >>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> The original Europa mit Renault engine was a dog! But the >>>>>>>>>>> original >>>>>>>>>>> Elite, if it had modern brakes would really be >>>>>>>>>>> a windy road car. The Elan S2 when de-bugged is a superb >>>>>>>>>>> handling >>>>>>>>>>> car. >>>>>>>>>>> >>>>>>>>>>> Yes, I've used them all >>>>>>>>>>> >>>>>>>>>>> Jerry Lehrer >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Dennis wrote: >>>>>>>>>>> >>>>>>>>>>> Hi Frank, >>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> I wondered your thoughts on Lotus' road cars. I had a >>>>>>>>>>>> Europa >>>>>>>>>>>> Special and >>>>>>>>>>>> it is a marvel. Very light, incredible suspension, and so >>>>>>>>>>>> responsive. I >>>>>>>>>>>> thought Colin Chapman brilliant and was stunned at his >>>>>>>>>>>> premature >>>>>>>>>>>> passing. >>>>>>>>>>>> >>>>>>>>>>>> I could never afford one of todays 'supercars' but if I >>>>>>>>>>>> could I >>>>>>>>>>>> would >>>>>>>>>>>> likely own a Lotus and use some of that "leftover" money >>>>>>>>>>>> for a >>>>>>>>>>>> worthy cause. >>>>>>>>>>>> >>>>>>>>>>>> I agree the Veyron is an ugly piece ;-) >>>>>>>>>>>> >>>>>>>>>>>> But, Lotus aside, what do you make of the Ariel Atom? >>>>>>>>>>>> >>>>>>>>>>>> Dennis >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> Frank Dernie wrote: >>>>>>>>>>>> >>>>>>>>>>>> Pagani Zonda. >>>>>>>>>>>> >>>>>>>>>>>>> For "frequent" use Ferrari 599. >>>>>>>>>>>>> For daily use Porsche 911 turbo. >>>>>>>>>>>>> For pure driving Lotus anything. >>>>>>>>>>>>> >>>>>>>>>>>>> There are lots of cars about which have fancy styling >>>>>>>>>>>>> and are "2 >>>>>>>>>>>>> seat >>>>>>>>>>>>> limos" with loads of kit, weight and electronic driving >>>>>>>>>>>>> aids to >>>>>>>>>>>>> make them >>>>>>>>>>>>> easy to drive for less good drivers. >>>>>>>>>>>>> These are great pose-mobiles and practical for a rich >>>>>>>>>>>>> person of >>>>>>>>>>>>> limited >>>>>>>>>>>>> talent to show-off in. >>>>>>>>>>>>> >>>>>>>>>>>>> I may have left some out, I am neither wealthy enough nor >>>>>>>>>>>>> interested >>>>>>>>>>>>> enough to study in detail. Weight is the most important >>>>>>>>>>>>> chassis >>>>>>>>>>>>> parameter >>>>>>>>>>>>> for performance. Road cars are to a great extent a >>>>>>>>>>>>> fashion item >>>>>>>>>>>>> and image >>>>>>>>>>>>> statement. Published stuff tends to be acceleration and >>>>>>>>>>>>> top >>>>>>>>>>>>> speed. It is >>>>>>>>>>>>> possible to get impressive figures for these without much >>>>>>>>>>>>> chassis >>>>>>>>>>>>> sophistication at all. Since weight is currently not >>>>>>>>>>>>> something >>>>>>>>>>>>> fashionable >>>>>>>>>>>>> to minimise "supercars" are now as heavy as trucks, >>>>>>>>>>>>> hence no >>>>>>>>>>>>> longer >>>>>>>>>>>>> supercars IMO. This Bugatti thing weighs the same as 2 >>>>>>>>>>>>> Ford >>>>>>>>>>>>> GT40s! >>>>>>>>>>>>> >>>>>>>>>>>>> To put perspective on this, +10kg on a F1 car loses over >>>>>>>>>>>>> 0.3 >>>>>>>>>>>>> secs >>>>>>>>>>>>> per >>>>>>>>>>>>> lap. >>>>>>>>>>>>> >>>>>>>>>>>>> Frank >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> _______________________________________________ >>>>>>>>>>> Leica Users Group. >>>>>>>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>>>>>>> information >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>>> Leica Users Group. >>>>>>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>>>>>> information >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> _______________________________________________ >>>>>>>>> Leica Users Group. >>>>>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>>>>> information >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Leica Users Group. >>>>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>>>> information >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> >>>>>>> Leica Users Group. >>>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>>> information >>>>>>> >>>>>>> >>>>>> _______________________________________________ >>>>>> Leica Users Group. >>>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>>> information >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> Leica Users Group. >>>>> See http://leica-users.org/mailman/listinfo/lug for more >>>>> information >>>>> >>>>> >>>>> _______________________________________________ >>>> Leica Users Group. >>>> See http://leica-users.org/mailman/listinfo/lug for more >>>> information >>>> >>>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information