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All Gpl Mods Specs Spreadsheet


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#16 Saiph

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Posted May 05 2017 - 04:02 AM

Bob, if you ever consider extending your spreadsheet, how about adding a note showing which sound file each car uses? I think that would be very useful info for GPL tinkerers.

#17 Frank_Mueller

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Posted May 06 2017 - 09:41 AM

I'm missing the Thunder Cars ;)

#18 ed76

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Posted Sep 21 2017 - 07:58 AM

How did you find the values for advanced and basic trainer?
because to make the 1962 F2 we tested on a perfectly flat speed ring
and that gave us
65 advT    about 150 HP
65 basicT about 110 HP

we drive up to Vmax, we disengage and let the car stop .
With GPLRA  function , we analyze the replay and knowing the weight of the car can calculate the power of the engine

#19 ed76

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Posted Oct 09 2017 - 03:35 PM

Attached File  Capture1.JPG   60.95K   21 downloads

on a perfect flat speed ring (take Chroma Key) drive up to Vmax , disengage ( or neutral with shifter) and let the car stop , make a replay

with GPLRA  function read Gamma , the longitudinal acceleration at the moment you disengage

P = m x Vmax/3,6 x gamma x 9,81 x 1,06 / 745
or P = m x Vmax/3,6 x gamma x 9,81 / 745 with shifter

in this example , Vmax = 287 , m = 603 kg , Gamma = 0,425

then P = 284 HP ( cooper T79 , FPF 2,7L ; P=260 in GPL)

Edited by ed76, Oct 09 2017 - 03:41 PM.


#20 ed76

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Posted Oct 10 2017 - 09:19 AM

203 HP  F2 AT
170 HP  F2 BT 8500t/mn (Vmax 234) 4 gears

308 HP   67x AT   8200t/mn ( Vmax 287)
126 HP   67x BT   6200t/mn  (Vmax 220) ; 4 gears

141 HP   67AT 6500t/mn (Vmax 210) 4 gears

324 HP   66 AT 9500t/mn (Vmax 270)
204 HP   66 BT 9500t/mn (Vmax 246)

140 HP 65 AT 10000t/mn      (6 gears)
105 HP 65BT 10000?           (4 gears)

358 HP CA66 AT 7500t/mn  Vmax 274 km/h
265 HP CA66 BT 7500t/mn  Vmax 253 km/h

513 HP CA71 AT 7500t/mn  Vmax 304 km/h
383 HP CA71 BT 7500t/mn  Vmax 269 km/h

Edited by ed76, Oct 11 2017 - 10:02 AM.


#21 JonnyA

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Posted Oct 10 2017 - 03:11 PM

Ed, do you know the figures for the 65 AT and BT? Thanks.

#22 ed76

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Posted Oct 10 2017 - 04:48 PM

View PostJonnyA, on Oct 10 2017 - 03:11 PM, said:

Ed, do you know the figures for the 65 AT and BT? Thanks.

http://srmz.net/inde...ed76#entry82033

65BT 105 HP  (4 gears) & 65 AT 140 HP (6 gears)

Edited by ed76, Oct 10 2017 - 05:00 PM.


#23 Bob Simpson

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Posted Oct 10 2017 - 06:47 PM

I took my figures from the GPL Setup Manager engine graphs and it looks to me like 65BT = 138 hp and 65AT = 200 hp

Edited by Bob Simpson, Oct 10 2017 - 07:12 PM.


#24 ed76

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Posted Oct 11 2017 - 05:32 AM

View PostBob Simpson, on Oct 10 2017 - 06:47 PM, said:

I took my figures from the GPL Setup Manager engine graphs and it looks to me like 65BT = 138 hp and 65AT = 200 hp

ok, I just looked, surprising that the indicated values are as far from those measured

#25 JonnyA

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Posted Oct 11 2017 - 05:59 AM

View Posted76, on Oct 10 2017 - 04:48 PM, said:

View PostJonnyA, on Oct 10 2017 - 03:11 PM, said:

Ed, do you know the figures for the 65 AT and BT? Thanks.

http://srmz.net/inde...ed76#entry82033

65BT 105 HP  (4 gears) & 65 AT 140 HP (6 gears)

Interesting. Apparently the Cosworth SCA engine was producing up to 130 HP in 1966 so the 65 AT is about right for 1 litre Formula 2.

#26 ed76

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Posted Oct 11 2017 - 06:44 AM

View PostJonnyA, on Oct 11 2017 - 05:59 AM, said:

Interesting. Apparently the Cosworth SCA engine was producing up to 130 HP in 1966 so the 65 AT is about right for 1 litre Formula 2.
I make the carset 1966 F2 , using mod 65 AT physics

https://www.4shared....stall_f2f3.html

http://www.dailymoti...s?search_algo=2

Edited by ed76, Oct 11 2017 - 06:47 AM.


#27 Lee200

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Posted Oct 11 2017 - 07:36 AM

View Posted76, on Oct 11 2017 - 05:32 AM, said:

View PostBob Simpson, on Oct 10 2017 - 06:47 PM, said:

I took my figures from the GPL Setup Manager engine graphs and it looks to me like 65BT = 138 hp and 65AT = 200 hp

ok, I just looked, surprising that the indicated values are as far from those measured

Setup Manager shows the gross engine horsepower used by GPL.  Apparently, you are deriving horsepower at the rear wheels through testing so it will always be lower due to friction in the drivetrain and other losses.

#28 ed76

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Posted Oct 11 2017 - 07:55 AM

Lee , this would be logical but the tests do not always give lower values

ex Copper T79 , my test 284 HP , friend's test 274 HP ; GPL 260 HP

Edited by ed76, Oct 11 2017 - 08:01 AM.


#29 Lee200

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Posted Oct 11 2017 - 08:36 AM

I'm just guessing, but I question how accurate GPLRA is at measuring deceleration which is used as the primary input to your equation.  If it is inaccurate, then you'd get inaccurate horsepower results.

I don't know if you ever saw this.  It describes a method of testing the horsepower at the rear wheels for the '67 F1 cars.  In each case, the difference between the engine and rear wheel horsepower is about a 20% loss.

What is the 3.6 constant in your equation for?  I understand the basics where Power=Mass*Acceleration*Velocity and 9.81 is the KGs to Newtons factor and 745 is the Watts to Horsepower factor, but the 3.6 constant is a mystery.

Attached Files


Edited by Lee200, Oct 11 2017 - 08:36 AM.


#30 ed76

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Posted Oct 11 2017 - 08:51 AM

1 km/h=1000m/3600s=1:3,6 m/s

thanks for the download link, I had this document but it was lost in the crash of my old PC

Edited by ed76, Oct 11 2017 - 11:50 AM.





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