Discussion in 'Gearhead Garage' started by GreatBambino, Jan 18, 2006.
When the tank is closer to empty than when it's full?
well the rule of thumb i believe is for ever 100lbs u save 1/10th of a sec on the 1/4 mile
you wont gain any top speed but you will improve your acceleration since your carring less weight
Acceleration will be improved as F = ma
so a = F/m
acceleration is inversely proportional to mass.
You could gain a few MPH in top speed with an empty tank however.
Friction at the wheel/road surface is proportional to the amount of weight on the tires. THe factor is quite small, but maybe you could pick up another 1MPH due to less drag from friction of the tires. However, an average speedo in a car wouldn't be able to detect such a small change.
doh.. I typed the topic wrong.. I meant to write.. How many more MPG do you think you get when the tank is closer to empty than when it's full?
if you are considering trying to drive around with a 1/2 tank or less to save gas, think about how much more often you will have to go to the pump, thus killing any savings you have.
frankly i think my truck gets better milage with a full tank...at least the gas gauge stays near F for a long time but then once it drops it drops faster seems like...
I always make 1/4 mi runs w/ 1/4 of a tank
i know a few prius owners who claim better mileage by filling their tanks half way
when i raced this year i had a little less than half a tank and after 4 runs i was almost empty
Well.. It just depends on how much you drive. I know a guy that has a corvette that fills up every couple months . But besides that point I wonder if they should create a car for like different purposes or do they already? Like for example just city driving or just country? or do they already? I don't know a whole lot about cars as it's probably obvious but tell me what you think.
The only increase in gas mileage you *may* get would be from a nearly-empty tank being a lot lighter than a full tank. Less weight = less work for the motor = better gas mileage
But that's a technicality and you won't actually find any real-world savings
All cars are identical regardless of where they are driven. Older trucks used to have tons of levels of customization, so technically you could configure your truck to match what you need, but it was still very generic... stuff like a secondary gas tank, 4x4, defrosters, propane tanks...