Gentlemen, For those of you who are interested in the mathematics of determining top speed you might like to take a look at http://phors.locost7.info/phors06.htm Which is a article from a series called the Physics of Racing.
Cheers Chris From: David Andrews <[EMAIL PROTECTED]> Date sent: Fri, 28 Feb 2003 12:08:22 GMT To: [EMAIL PROTECTED] Send reply to: [EMAIL PROTECTED] Subject: Re: Top speed of modified P510? > Dunno about that. Have a look at the mega-fast 9-sec gtr's from japan > (HPI/Zoom etc), they all tend towards long low-incident-angle wings. > Your required angle decreases as air flow increases. Thus the faster > you want to go the smaller angle you need. Of course, up until the > point you approach that speed you have minimal downforce so > unstability. The answer? Adjustable wings. Ala the F1 McLaren. For > those who haven't seen it, have a squiz at the following movie: > > http://www.netspace.net.au/~thehelix112/Top_Gear-McLarenF1.asf > > in a little while after I've finished uploading it. Impressive stuff. > > I'm of the opinion that top speed in any car is limited by two things > (assuming STP standard temperature pressure). Torque at the wheels at > desired speed, and drag coefficient. With torque is a product of the > engines torque at the required RPM and the driveline ratios. > > Oh and andrew, do you have a measured time from brett's speed day run > by any chance? Thanks, > > Dave > > > > >>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<< > > On 2/28/03, 4:48:44 PM, "Rob P" <[EMAIL PROTECTED]> wrote regarding > Re: Top speed of modified P510?: > > > > You'd have to start thinking about some seriously huge rear wing for > > downforce after that. Then that's going to add drag and slow you > > down etc.... > > > Rob P > > ----- Original Message ----- > > From: "dceptn" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Friday, February 28, 2003 10:12 AM > > Subject: Re: Top speed of modified P510? > > > > > hmm that 9sec 1600 cracks around 211kmhr > > > > > > ----- Original Message ----- > > > From: "Rob P" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Friday, February 28, 2003 2:23 PM > > > Subject: Top speed of modified P510? > > > > > > > > > > I seem to recall that air resistance increases in a logarithmic > > > > fashion > > as > > > > speed increases, hence the limiting of top speed. e.g. air > > > > resistance/friction at 200km/h is more than twice it would be at > > 100km/h. > > > > So you need a pretty slippery car body shape and LOTS of power > > > > to get to 300km/h plus. > > > > > > > > Q: What is the highest top speed anyone has ever heard a Datsun > > > > 1600 > > going > > > > at? Forget about the stock motor, I mean Turboed, Nitroed, > > > > Supercharged whatever? I guess it would be pretty difficult to > > > > crack much more than 230km/h with that body shape. > > > > > > > > Rob P > > > > > > > > > > > > ----- Original Message ----- > > > > From: "Jon Ovington" <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Thursday, February 27, 2003 8:15 PM > > > > Subject: RE: A very powful tool > > > > > > > > > > > > > Down hill with big wind assistance, and BLOODY BIG run up... > > > > > Bit of > > luck > > > > > and maybe you'll get there =) > > > > > > > > > > Seriously, its a lot to ask for. As Heath said, its all about > > friction, > > > > > just because it has a 7k redline, does not mean it will get > > > > > there in > > top > > > > > gear. > > > > > > > > > > Modified, yeah understand its very possible, stock, doubt it. > > > > > > > > > > My opinion anyhow ;) > > > > > > > > > > I guess the way to prove it is try it! Pinout 53 I believe. > > > > > > > > > > > > > > > Regards, > > > > > Jon Ovington > > > > > > > > > > DatNet - Online Nissan-Datsun Resource > > > > > Website: http://www.datnet.org > > > > > Contact Us at [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -----Original Message----- > > > > > From: [EMAIL PROTECTED] > > > > > [mailto:[EMAIL PROTECTED] On Behalf Of > > > > > Heath Sent: Thursday, 27 February 2003 10:44 PM To: > > > > > [EMAIL PROTECTED] Subject: Re: A very powful tool > > > > > > > > > > > > > > > on salt lakes? > > > > > > > > > > Heath > > > > > ----- Original Message ----- > > > > > From: Maldat <[EMAIL PROTECTED]> > > > > > To: <[EMAIL PROTECTED]> > > > > > Sent: Thursday, February 27, 2003 5:27 PM > > > > > Subject: Re: A very powful tool > > > > > > > > > > > > > > > > you carnt judge anything on a full blown race car,they dont > > > > > > run a > > 3.5 > > > > > > diff for a start let alone a auto trans. totally different. > > > > > > > > > > > > The nissan race car with this basic engine has turbos of > > > > > > course and different efi but they are doing around 400+Kph, > > > > > > > > > > > > remember its a factory street car it will need a wind up but > > > > > > I'm > > keen > > > > > > to > > > > > see > > > > > > 7000 in top. > > > > > > > > > > > > Malcolm > > > > > > > > > > > > > > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- > OZDAT Mailing List Please Note:- Send (un)subscribe requests to > [EMAIL PROTECTED] Send submissions to > [EMAIL PROTECTED] No unauthorised redistribution of this > email http://www.ozdat.com/ozdatonline/index.htm > http://www.ozdat.com/ozdatonline/listindex.html > http://www.mail-archive.com/[EMAIL PROTECTED]/ > --------------------------------------------------------------------- > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
