G Tech

[R2D2]

Finally, at last, my G tech meter arrived today. For those who haven't come accross them before. The device measures to within 1/100th of a second the performance of whatever vehicle it is connected to. These are the type of devices used by Topgear and Autocar to sort of the fact from the claim.

Later on I'll connect it up and have a practice at using it and them I'll start to report the findings.

If there are other members who are interested in taking accurate measurements of their vehicles performance then maybe we can meet up or something.

The G Tech records:

0-60 time
1/4 mile time and speed
Cornering G's
60-0 Braking time
Horsepower

If you are interested in this project then join in this thread and we'll see if we can draw up a database of real results.

I'm not sure what section this should be in so please feel free to move it if you feel that is appropriate!

 

[janner]

Ooooh, sounds interesting.
How does it calculate hp?

 

[BTB 500]

The G Tech records:

0-60 time
1/4 mile time and speed
Cornering G's
60-0 Braking time
Horsepower

Sounds fun, but surely horsepower relies on knowing the exact weight of your vehicle at the time??

 

[R2D2]

yes it does require the weight but your cars weight is on the label inside the drivers door.

 

[pammy]

Sounds interesting! How could we set this up?

Would it need a track type day - or a private road ?

 

[BTB 500]

yes it does require the weight but your cars weight is on the label inside the drivers door.

If you mean the kerbweight, that's only a manufacturer's estimate.

The actual weight depends on who's in the driver's seat, how much fuel is in the tank, what you've got in the boot, what the oil level is, what options / extras the car has ... all sorts of things.

Unless you weigh the car before a run you're only going to get a very rough HP figure.

 

[scumbag]

i think we would be needing a decent road, anybody know of a private road that the owners would allow us use of?

I would be interested in finding out.

would we need a set of scales so we can weigh ouselves too. so that the total weight of the car is correct at the time of testing?

 

[Shude]

I think there is a truck weighstation near my house, I was considering a trip there to find out the weight of my car, with me in it, half a tank of fuel (easy to work out the weight of the fuel anyway) chewing gum, litter, CDs etc in the boot...

 

[BTB 500]

Yup a weighbridge would do the trick, either weigh it with a full or empty tank and adjust on the day.

 

[Shude]

Yup a weighbridge would do the trick, either weigh it with a full or empty tank and adjust on the day.

I just found out that it's about £7 to get my car weighed at a waste disposal site in Leeds, they weigh the vehicles coming in and out so they can charge accordingly. You get a receipt with all the info on and it's maintained by trading standards so it's probably accurate. I think if you're paying to dump stuff the weighing price is included, wonder what I can find to dump...

 

[BTB 500]

You can get a list of public weighbridges from the local council (most have this info. on their website). Some make a small charge for private vehicles, others are free.

 

[R2D2]

Ok well weight has to be entered in lbs (!) and I'll start my early experiments with 2260lbs but would welcome any better guesses. I will enquire about weigh bridges near me. More later!

 

[R2D2]

2260 LOL. sorry

 

[R2D2]

OK . First set of results:

4 runs 0-60 leaving out the best and the worst and averaging the other two

0-60 = 8.45secs (Whatcar measured 10sec on their car)

1/4 mile 1 run only so far

1/4 mile in 16.7 sec, terminal speed at 1/4 mile 70.6sec


More tomorrow when I get more time to play. Grav you around tomorrow?

 

[R2D2]

Ok I found two weigh bridges near me. The label on the door pillar with 1965kg is the maximum permissable weight with a full load of passengers and luggage. In the handbook it says unladen weigh but including driver and 90% of fuel and other fluids should be 1485kg. I took my car to the weigh bridge and the car and me and no fuel= 1540kg. Fuel weighs 0.72kg per litre so when I filled up with 57litres I added 41kg of weight bringing the cars weight with me and fuel to 1581kg. (The lengths I go to eh!) More on this subject later.

The G Tech itself is a fantastic device to use, it is so small and so darn clever, it knows if the car is leaning (adverse camber) or on any slope and tells you so!

You attach the g tech to the windscreen making sure that it is dead straight to the car. You then select Accelaration measurement or G force measurement. Once the levels are at zero you press the button and it flashes go at you. If you accelarate to 60 and then slow down it will give you your time but if you keep accelarating beyond 60 it will do your 1/4 mile time and speed.

I havent done 60-0 yet or G force!

Fantastic fun you tend to drive with it on and measure ever time you pullaway from stationery. If anyone one wants their car done then let me know.

 

[C43AMG]

I would be interested in a G Tech GTG.

 

[R2D2]

I found a list of tested 0-60 times and 1/4mile times for some Mercedes models.

I'll add our one measurements in bold:

1984 Mercedes-Benz 190E 11.2 18.1
1986 Mercedes-Benz 190E 2.3 9.9 17.5
1987 Mercedes-Benz 190E 2.3-16 7.8 16.2
1989 Mercedes-Benz 190E 2.6 8.7 16.8
1992 Mercedes-Benz 190E 2.3 11.4 18.4
1980 Mercedes-Benz 240D (4spd) 19.7 21.4
1968 Mercedes-Benz 280SL 9.9 17.1
1971 Mercedes-Benz 280SEL 4.5 11.2 18.1
1973 Mercedes-Benz 280 11.1 17.1
1977 Mercedes-Benz 280E 11.9 18.3
1981 Mercedes-Benz 380SEL 10.1 N/A
1981 Mercedes-Benz 300TD 13.2 N/A
1982 Mercedes-Benz 380SEC 10.4 N/A
1982 Mercedes-Benz 380SL 11.5
1983 Mercedes-Benz 380SEC 10.4 17.9
1983 Mercedes-Benz 380SL 10.9 18.4
1987 Mercedes-Benz 300TD 10.3 17.5
1987 Mercedes-Benz 300E 7.5 16.0
1990 Mercedes-Benz 300E 8.7 16.8
1990 Mercedes-Benz 300E 4Matic 9.2 17.0
1990 Mercedes-Benz 300SL 9.1 17.0
1991 Mercedes-Benz 300CE 24V 8.5 16.6
1991 Mercedes-Benz 300SE 9.2 17.0
1992 Mercedes-Benz 300E 8.6 16.6
1993 Mercedes-Benz 300CE Conv. 8.1 16.1
1988 Mercedes-Benz 420SEL 8.7 16.7
1992 Mercedes-Benz 400E 7.6 15.8
1993 Mercedes-Benz 400E 7.2 15.4
1984 Mercedes-Benz 500SEC 9.0 17.0
1985 Mercedes-Benz 500SEL 8.9 17.0
1986 Mercedes-Benz 560SL 7.5 15.8
1987 Mercedes-Benz 560SEC 7.0 15.5
1987 Mercedes-Benz 560SL 7.5 15.8
1989 Mercedes-Benz 560SL 6.8 15.2
1990 Mercedes-Benz 500SL 6.4 14.9
1991 Mercedes-Benz 500SL 6.1 14.4
1992 Mercedes-Benz 500E 6.2 14.6
1992 Mercedes-Benz 500SEL 7.4 15.7
1993 Mercedes-Benz 500E 6.3 14.7
1994 Mercedes-Benz 500SL 6.3 14.6
1993 Mercedes-Benz 600SEC 6.5 14.8
1993 Mercedes-Benz 600SEL 6.6 15.2
1994 Mercedes-Benz 600SEL 6.7 14.9
1998 Mercedes-Benz A160 10.3 17.7
1995 Mercedes-Benz C36 6.0 14.5
1997 Mercedes-Benz C36 5.9 14.4
1998 Mercedes-Benz C43 5.8 14.4
2002 Mercedes-Benz C32 AMG 5.1 13.6
2005 Mercedes-Benz C180k 8.2 16.7 tuned
1994 Mercedes-Benz C220 8.7 16.9
1996 Mercedes-Benz C220 9.0 16.9
1999 Mercedes-Benz C230 Komp. 7.6 15.7
2001 Mercedes-Benz C240 8.8 16.7
1994 Mercedes-Benz C280 7.8 16.1
1994 Mercedes-Benz C280 (auto) 8.4 16.5
1995 Mercedes-Benz C280 7.9 16.0
1996 Mercedes-Benz C280 Sport 7.3 15.8
2001 Mercedes-Benz C320 Sport 7.5 15.8
2002 Mercedes-Benz C320 6.8 15.1
1998 Mercedes-Benz CLK320 6.8 15.2
1999 Mercedes-Benz CLK430 6.1 14.5
2001 Mercedes-Benz CLK55 AMG 5.0 13.6
1999 Mercedes-Benz CLK-GTR 3.4 9.4
1999 Mercedes-Benz CL600 6.2 14.4
2001 Mercedes-Benz CL600 5.7 14.2
1995 Mercedes-Benz E320 Cabriolet (auto) 8.7 16.5
1996 Mercedes-Benz E320 7.1 15.4
1995 Mercedes-Benz E420 (auto) 7.1 15.3
1998 Mercedes-Benz E430 Sport 6.1 14.5
1998 Mercedes-Benz E55 AMG 5.47 14.5
2001 Mercedes-Benz E55 AMG 5.0 13.6
2003 Mercedes-Benz E55 AMG 4.2 12.39 (R&T Online)
1998 Mercedes-Benz ML320 8.9 16.8
1999 Mercedes-Benz ML320 9.0 16.8
1999 Mercedes-Benz ML430 8.2 16.4
2000 Mercedes-Benz S500 6.1 14.5
2006 Mercedes-Benz S500 5.4 n/a (C&D Sept '05)
2001 Mercedes-Benz S600 5.4 13.9
1997 Mercedes-Benz SLK230 6.9 15.2
2002 Mercedes-Benz SLK32 AMG 4.5 13.0

 

[machasm]

Wouldn't mind a go myself.
Perhaps we could do a G-tech GTG?
Mac.

 

[A-AvantGarde]

Wouldn't mind a go myself.
Perhaps we could do a G-tech GTG?
Mac.

2001 Mercedes-Benz C320 Sport 7.5 15.8
2002 Mercedes-Benz C320 6.8 15.1

Are these figures Manufacturers claimed figures? Wouldn't mid giving it a crack, sounds like a good plan, just hope I get to make it to a GTG

 

[R2D2]

I think these figures are all actual tested figures from US car mags