G'day Dave, Yep the X-axis is time (secs). Motec use a sign convention of +ve lateral acceleration for LH turns, and -ve for RH turns. So the +ve lateral acceleration first measured is due to the 90 degree left turn entry, before the 180 degree RH corner (as per the little "track map" shown in the bottom right). The longer duration of the -ve acceleration indicates this as a longer corner also.
I was running Yoko 195/50/15 A539s, with nothing else special suspension wise. Not really lowered at the moment (which can sort of be seen here): http://opax.swin.edu.au/~185404/new_photos/dat5.jpg Standard springs (as far as I know) and front antiroll bar. Camber is as standard with 240K struts. And I was only running ~32 psi as I was on a tight deadline so had no time to make adjustments for heavy cornering :( Andrew > Not bad at all considering a stock R34 is only good to 0.94G (if i > remember correctly). > What tyres? > Camber? > > What is the X-axis in? Seconds? > Is positive red (lateral) outwards on the corner? As in when you go in > the car accelerates as the car rolls/shifts weight to the outer wheels, > then accelerates back as it stabilises: hence the wave in the lateral. > > Keen to know more, > > Dave > > > >>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<< > > On 11/12/02, 2:31:18 PM, "Andrew Greenbury" <[EMAIL PROTECTED]> wrote > regarding 1600 measured cornering performance...: > > > > hi List, > > > For part of my work the other day I had to hook up a data aquisition > > system to my road 1600 to evaluate a sensor during cornering, so I > > thought I'd share some of the results if anyone was interested > > (screen dumps at): > > http://opax.swin.edu.au/~185404/data/ > > > For Melbourne listers, the corner in question is the Mitcham end > > entrance to the Eastern Fwy - a smooth constant radius (of about > > 30m) 180 degree right hand turn. > > > In the top screen, the red trace is lateral (cornering) acceleration, > > blue is longnitudinal (forward/braking) acceleration, and the green is > > vertical. The bottom screen is speed. > > > As can be seen, the little 510 reached ~0.9G cornering > > acceleration, while still remaining very balanced. For comparison, a > > V8Supercar reaches ~1.5G, and Phil Morriss's FJ24 racecar > > generated ~1.2G at Robroy hillclimb. > > > Regards, > > Andrew > > --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/membersozdat@;datascribe.com.au/ ---------------------------------------------------------------------
