Fuel load makes it heavier

  • Thread starter Thread starter Enzo309
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Enzo309

Enzo309

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Since I got to go endurance racing I wondered if you have much fuel your car will weigh more

Because in formula 1 this season (2010 which is over) they've banned fueling

They've got a fuel load of 170 kg and that 150-160 kg is just enough for the whole grand prix which is around 50 laps depending on how long the track is.

So in GT5 if you have a full load that makes like the car 100 kg heavier?

And it's pretty pointless to have the liters option if the cars who went to the pits just got full load and didnt get heavier because they go to the pits a lot more times so fuel will never go to a low level.

Anyone know if fuel load affects weight??

Thanks
 
Having less fuel actually gives you less weight. Noticed this in both Grand Valley 300KM and 4H Tsukuba endurances. Got faster lap times than when I just started the endurance after I made a pitstop and only changed tyres.

So if you're doing any endurance, it's a good idea to keep your fuel as low as possible, should have just enough to make it till the next pitstop or the finish.
 
^^^^ this guy is right :) BTW there is a point in not filling up your car. If you just put in about 17 litres the fuel man will be finished about the same time as the tires so you dont have to wait for him. (i have waited like 45 seconds for him to finish filling up my MX5)
 
Firehuntah
Having less fuel actually gives you less weight. Noticed this in both Grand Valley 300KM and 4H Tsukuba endurances. Got faster lap times than when I just started the endurance after I made a pitstop and only changed tyres.

So if you're doing any endurance, it's a good idea to keep your fuel as low as possible, should have just enough to make it till the next pitstop or the finish.
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Still not sure about that myself

I've been comparing 100 liters to 5 liters

Same track top speed

No different feel to understeers

Same braking

Same acceleration

Pretty much same everything

Had it 3 tests now

I do not think it is confirmed ?
 
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I've had 3 seconds difference between my lap times during Grand Valley endurance (Subaru Impreza, tuned a bit) and around 1,5 second during the Tsukuba one (stock '07 MX5). So having less fuel should help, unless I somehow managed to get 3 and 1,5 seconds of my lap times using the exact same racing line and speeds.. Don't think so. :P
 
Firehuntah
I've had 3 seconds difference between my lap times during Grand Valley endurance (Subaru Impreza, tuned a bit) and around 1,5 second during the Tsukuba one (stock '07 MX5). So having less fuel should help, unless I somehow managed to get 3 and 1,5 seconds of my lap times using the exact same racing line and speeds.. Don't think so. :P
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I'll remain sceptical, 200 laps of a ring, times constant all the way through except when I got a bit of draft off the AI but even then marginal difference.
I'd think the Indy 500 would be a fairly accurate testing ground compared to grand valley.
Would love that much detail anyone else have any comparisons?
 
Being a big F1 fan I know about the fuel issue and I think your not seeing the difference on the indy track because the extra or less fuel needs to be accelerated braked and turned to effect the lap time and you don't do that much on a lap of indy
 
willsy56
Being a big F1 fan I know about the fuel issue and I think your not seeing the difference on the indy track because the extra or less fuel needs to be accelerated braked and turned to effect the lap time and you don't do that much on a lap of indy
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This. The movement of the fuel is what disrupts your driving most, it's best tested on a track with corners, but then you get the additional problem of actually performing consistently yourself which obviously is easier on an oval.
 

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