tag:blogger.com,1999:blog-8101784122100352616.post3653250499605514995..comments2024-03-14T08:19:36.636+00:00Comments on Trussers (Paul Truswell's blog): So what about Porsche?Paul Truswellhttp://www.blogger.com/profile/17160575296019945600noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8101784122100352616.post-31888693157313926572014-06-10T21:21:51.599+01:002014-06-10T21:21:51.599+01:00Dave,
Fundamentally, you're right on all coun...Dave,<br /><br />Fundamentally, you're right on all counts. The only bit you miss is that electric is much more efficient than a combustion engine, so can convert the energy to kinetic better. This is where the Toyota's acceleration is coming from (and Porsche's).<br /><br />The problem for Toyota is that by the end of the straight bits, the electric energy is beginning to wane, so its speed will tail off towards the end of the straight, whereas Audi and Porsche will be able to maintain their speed (although reach top speed more slowly).<br /><br />But yes, it is complicated, and hopefully new rules when they are introduced, will be simpler.Paul Truswellhttps://www.blogger.com/profile/17160575296019945600noreply@blogger.comtag:blogger.com,1999:blog-8101784122100352616.post-28089630713214867792014-06-10T11:01:37.518+01:002014-06-10T11:01:37.518+01:00Hi Paul,
Great stuff as usual. I have been an avi...Hi Paul,<br />Great stuff as usual. I have been an avid reader of this blog for some time now and have a great respect for your opinions and analysys. But your last 2 posts (and other things I have read) have left me confused.<br /><br />From what I understand each car has a maximum amount of energy it can use for a lap of Le Mans.<br />Porsche & Toyota get 139.5mJ and Audi 138.7.<br />Porsche & Toyota get a maximum of 6mJ from recovery systems and Audi 2mJ.<br /><br />So am I right in thinking that Porsche & Toyota produce 133.5mJ from their petrol engines and 6mJ from recovery systems giving them 139.5mJ. Whist Audi produce 136.7 from their diesel engine and 2 mJ from recovery?<br /><br />So we are looking at a very small difference of 0.8mJ per lap, which by my sums is slightly less than 1%. Especially when you divide that 0.8mJ between the number of corners. If there was only 8 corners at Le Mans that’s an additional 0.1 mJ per corner. So how on earth are Toyota getting so much more acceleration? And how does all this fit in with the figures floating around the internet that Toyota have about 230 bhp more than Audi with Porsche somewhere in the middle?<br /><br />If Toyota are using a greater % of their total allowance for acceleration, once that has been used they should be left with a slightly less powerful engine. So how come they appear to be faster down a long straight? The difference at Spa was staggering!<br /><br />It seems to me either some of these teams are generating massive amounts more than their maximum or Audi are nowhere near theirs.<br /><br />One other thing.<br />This 0.8mj per lap seems very small until you multiply it up.<br /><br />With the new Slow Zones system I think it is fair to assume that there will be very few safety car periods. So a new distance record could well be on the cards.<br />Lets assume they do 390 laps. 390 x 0.8= 312mJ. Or enough for more than 2 laps.<br />And if your sums are correct (I don’t doubt it!) Porsche & Toyota should be able to do 14 laps to Audis 13 per tank of fuel. So 27 stops for Toyota and Porsche and 30 for Audi. <br />Oh dear, they had may as well of told Audi to give the others a 5 lap lead! And there was me thinking all these new rules were designed to equalize petrol/diesel!<br />Davenoreply@blogger.com