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    5th and 6th gear acceleration

    Have seen posts concerning the following times in gears...5th gear 50-75mph in 3.8 secs, 6th gear 50-70mph in 5.4 secs. Given that there is some initial turbo lag how are these times recorded...do you start at 48 or 49 mph,floor it and then start timing at 50. I can't believe these cars will give these times ...if the car is steady at 50 and then exactly at the same time the stopwatch is started and the pedal floored it can produce these stated times ..At these low rpm's the initial lag is obvious. What am I missing? My car cannot duplicate these times and it seems quite healthy...there's just that 1+sec lag at these lower rpms. Should I be concerned?

    Re: 5th and 6th gear acceleration

    Don't use a stopwatch. You need something like a Performance Box http://www.performancebox.co.uk/

    Then you will be able to accurately measure pretty much any performance parameter you want. Go all out from a standing start and the Performance Box will accurately record accel. times for the exact interval you want. You can also display all the results on your PC and print out graphs etc. No performance car enthusiast should be without one IMHO!!

    Re: 5th and 6th gear acceleration

    Some useful info on Turbo acceleration as tested at Milbrook proving ground in Bedford UK:


    Re: 5th and 6th gear acceleration

    The GT3 and Carrera S X51 for comparison.

    Note: all measured on the mile straight with a Performance box (I did the same straight myself many times on my Turbo experience day - great fun!)


    Re: 5th and 6th gear acceleration

    Car specs as tested (manual with LSD)


    Re: 5th and 6th gear acceleration

    __Thanks__ Alex for posting. Verrry good info.


    Re: 5th and 6th gear acceleration

    Alex, which mag did those come out of?

    Re: 5th and 6th gear acceleration

    Quote:
    Whoopsy said:
    Alex, which mag did those come out of?



    GT Purely Porsche - Aug 2007

    I didn't scan them but I downloaded the whole 26 page test, I forget from where.

    Re: 5th and 6th gear acceleration

    Stadale originally posted this:

    http://www.rennteam.com/showflat.php?Cat=0&Number=373235&page=&fpart=1&vc=1

    Re: 5th and 6th gear acceleration

    By the way, these results were with a full tank of petrol, 2 people in the car and a 6mph head-wind.

    That's probably why some of the results don't match Porsche's official stats.

    I think it's more real world though...

    Re: 5th and 6th gear acceleration

    Alex,
    Thanks for posting. Very interesting and useful info.

    Quote:
    Alex (UK) said:
    By the way, these results were with a full tank of petrol, 2 people in the car and a 6mph head-wind.

    That's probably why some of the results don't match Porsche's official stats.

    I think it's more real world though...


    Re: 5th and 6th gear acceleration

    Quote:
    Alex (UK) said:
    Stadale originally posted this:

    http://www.rennteam.com/showflat.php?Cat=0&Number=373235&page=&fpart=1&vc=1





    WOW! Nice work Stradale! We all owe you one.

     
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