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Re: 4K tranny - .75 or .80 5th??
Drew,
That's really strange... Many of the guys on the list have seen my
version of your program. :)
I wrote mine in 1993, but in QBasic (ah ha! I beat you, mine's
worse!). Mine's an application that runs along the same lines, only
different. :)
I use mine to determine the best shift points for maximum
acceleration using dyno results. The neat thing is that during that
process, it also will compute a 0-60 [Car & Driver: Street Start)
non-clutch drop acceleration figure and a top speed.
The coolest thing in the world is that I've found the top speed to be
within about 5mph of reality on any car I've run it with, quite accurate
when you consider the real world has a million different variables
including wind speed & direction, tire drag, inflation pressures, different
drag ratios by mods, temperature, air density, humidity, road surface, etc
etc etc.
I keep promising everyone that one day I'll make a new .exe
version of it -- but time has not been on my side.
Jason
At 12:38 PM 1/23/01 , drew wrote:
>Sorry Brett, I did mine years and years ago (about 94?), before I ever
>knew about scirocco.org... :) It's a little easier (and a bit sexier)
>user interface that allows the user to roll through a list of
>transmissions/tires while watching speed/engine rpm differences change
>dynamically. It includes an accelerate/deccelerate function and a nice
>visual speedometer bar and big LEDish numbers for speed. :)
>
>The distribution is only about 50K, if you want to post it on
>scirocco.org... :) :)
>
>Drag is it's written in QuickBasic and so runs in a dos window. Haven't
>gotten around to porting it to Java yet, sorry... :)
>
>Here's a screen shot (if you have courier or another non-proportional
>font:) (The big speed numbers didn't come out - they're extended ASCII, as
>are the Knight-Rider'esq speed and tach bars)
>
>++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>trans: FF gear: 5 ratio: 0.76
>rpm: 1361 tire: P175/70R13 final drive: 3.89
>
>
>
>. . . .1000. . . .2000. . . 3000. . . 4000. . . 5000. . . 6000 .
>
> 10 20 35 50 65 80 105 130 160 185 200 235
>
>SPEED km/h R 1 3 5
> | | | |
> ----------------
> | |
> 2 4
>
>
>
>
>
>
>
>F1=Trans Up F2=Trans Down F3=Tire Up F4=Tire Down F10= mph ESC=Quit
>Number Pad: Plus/Minus=Engine Speed Up/Dwn Arrow=Gear Select
>
>
>++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>
>
>On Tue, 23 Jan 2001, Brett Van Sprewenburg wrote:
>
> > All this information, including a gear / tire / speed / rpm calculator with
> > a full chart of just about every 020 box made with drive flange info is
> > on scirocco.org. Click the 'Gear' icon off the first page and enjoy.
> >
> > ==Brett
> >
> >
> > >
> > > Here's the 2-5 and finals for the 4K, 7A and 9A boxes. Notice that
> the 7A
> > > in fourth is the same as the 4K in fifth - which is great for me, as on
> > > those rare occasions when I want to hit top speed, I still can in 4th...
> > >
> > > -------2----3----4----5---FD-
> > > "4K" 2.12 1.44 1.13 0.91 3.94
> > > "7A" 1.94 1.29 0.91 0.71 3.94
> > > "9A" 2.12 1.44 1.13 0.91 3.67
> > >
> > >
> > > Drew (84 Wolfsburg Edition)
> >
>
>Drew MacPherson, Network Analyst, University of Guelph
>
>drew@dyermaker.cs.uoguelph.ca | visit the Massey-Harris page:
>http://dyermaker.cs.uoguelph.ca/~drew | http://m-h.cs.uoguelph.ca
>
>
>--
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----------
1987 Scirocco 16v
1988 Mercedes 190E Sport Euro
http://www.scirocco16v.org
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