Anyone noticed this before ??? - Page 2

lowerlevel · 06-16-2007, 06:11 PM

Quote:

Originally Posted by Jay Kincannon

Most of the time when I get gas, I only put in $15 to $20 cash, which is about 5 to 7 gallons. Today I did not have any cash, so I used my credit card and filled it up to 12.3 gallons. Guess what happened. My car handled like crap. The extra weight of the gas in the rear made a noticeable difference in rear shocks, side to side movement, and front push. I even noticed a change in braking. So I guess I will never do that again for city driving.

12.3 gallons that pretty low on fuel. i fill up when im down to 1 or no bars of gas and i allways put in about 10.8. its funny how everyones fuel meters show different.anway

xcopx · 06-16-2007, 07:07 PM

Wouldn't a full tank of gas act more like a solid mass than a half tank? A half tank has a whole lot more room to move around in right?

drahgon · 06-16-2007, 07:13 PM

well yes, but there are baffles in the tank to keep the gas from sloshing around

***Sirbelch*** · 06-16-2007, 08:12 PM

In my experince, the back end tends to rotate more on a full tank than a almost empty tank. The more weight gives the rear of the car more inertia which is going to make it come around more in a corner. Also the more weight in the back changes the weight distribution of the car bringing closer to a neutral distribution around 58/42 front rear. This would also cause the car to rotate more in the corner not push. Other than that, it will increase stopping distances and it will slow acceleration.

zenith931 · 06-16-2007, 09:19 PM

Quote:

Originally Posted by jric1308

I don't do grocery shopping, the lady enjoys that too much...she never lets me go. with a passanger, the car obviously is harder to push. buts its not the same as fuel. the passenger is static ( he/she wont move). the fuel on the other hand is very fluid. so when you hit those corners or step on the brake, the fluid will go to that side, pushing the additional 40lbs or so onto one side , or push to the front when braking, almost instantaneously causeing a difference in handling. its like having a car on the edge of a cliff. if a wtaer cooler bottle rolls to the side, you're done for. even tho its only 40 lbs or so, it makes a huge difference in the wieght distribution of the car.
thats my 0.02 cents

the fuel doesn't shift that much during hard driving. The gas tank is not hollow, there are baffles which keep the fuel from sloshing around too much. I would suggest the only changes you're feeling are from the added weight, not the extra weight moving in turns.

xcopx · 06-16-2007, 11:07 PM

Quote:

Originally Posted by drahgon

well yes, but there are baffles in the tank to keep the gas from sloshing around

Cool, learn something new everyday.

**wing_gundam** · 06-16-2007, 11:23 PM

My gf is pretty light :) she therefore allowed to sit in my car :)

***Sirbelch*** · 06-17-2007, 01:21 AM

Yeah my girl is 125 lbs and i can feel her weight in the car if i'm driving spiritedly. Its a total bummer when any one else is in the car an im first in line for the on ramp. Its still fun but its just that much better when its just me.

Andrei'sCivic · 06-17-2007, 04:41 AM

Yeah... more weight in the rear car is more likely to spin out? I can see that. Like the Porsches with obviously the engine in the rear were prone to oversteer when a turn is taken to quick.
Why do you guys use weight distribution as an arguement for longer braking distances?? Don't you guys know that we have EBD? Is that right? Electronic Brake Distribution. Our cars will modify braking front and rear based on weight distribution. If we have more weight in the back it will make the rear brakes work a little harder.

RJJensen · 06-17-2007, 11:50 AM

while i agree that you feel a diff its hard to believe...i would think that the additional weight would make the car handle better...more weight in the rear = more traction over the rear tires...while there is some sloshing this is minimized by the use of baffles in the fuel tank plus there would be just as much if not more sloshing at half tank than full tank...im sure that there are some good technical docs on how sloshing affects handling but i couldnt find any...by the way how fast are you taking those turns?...lol..if its affecting ur handling that much u might want to take it in and get it checkd..or never fill it up...sry

06-16-2007, 11:23 PM	#27 (permalink)
wing_gundam Smooth Moderator Join Date: Apr 2006 Location: T dot Posts: 17,796 Civic Type Stock iTrader: 9 / 100%	My gf is pretty light :) she therefore allowed to sit in my car :) __________________ Trying to sell? Read the updated for sale forum rules here

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06-16-2007, 07:07 PM	#22 (permalink)
xcopx Senior Member Join Date: May 2007 Location: from NorCal, stationed in NC Age: 26 Posts: 217 Nee-kon Squad! #4 iTrader: 0 / 0%	Wouldn't a full tank of gas act more like a solid mass than a half tank? A half tank has a whole lot more room to move around in right?

06-16-2007, 07:13 PM	#23 (permalink)
drahgon Senior Member Join Date: Mar 2007 Location: Winnipeg Posts: 1,403 Daryl iTrader: 0 / 0%	well yes, but there are baffles in the tank to keep the gas from sloshing around

06-16-2007, 08:12 PM	#24 (permalink)
*Sirbelch* Louder than 4 F404-GE-400 Join Date: Jan 2007 Location: Vacaville CA Age: 27 Posts: 5,636 Paul iTrader: 1 / 100%	In my experince, the back end tends to rotate more on a full tank than a almost empty tank. The more weight gives the rear of the car more inertia which is going to make it come around more in a corner. Also the more weight in the back changes the weight distribution of the car bringing closer to a neutral distribution around 58/42 front rear. This would also cause the car to rotate more in the corner not push. Other than that, it will increase stopping distances and it will slow acceleration.

06-17-2007, 01:21 AM	#28 (permalink)
*Sirbelch* Louder than 4 F404-GE-400 Join Date: Jan 2007 Location: Vacaville CA Age: 27 Posts: 5,636 Paul iTrader: 1 / 100%	Yeah my girl is 125 lbs and i can feel her weight in the car if i'm driving spiritedly. Its a total bummer when any one else is in the car an im first in line for the on ramp. Its still fun but its just that much better when its just me.

06-17-2007, 04:41 AM	#29 (permalink)
Andrei'sCivic Senior Member Join Date: Dec 2006 Location: Long Beach, CA Age: 21 Posts: 740 Andrei iTrader: 2 / 100%	Yeah... more weight in the rear car is more likely to spin out? I can see that. Like the Porsches with obviously the engine in the rear were prone to oversteer when a turn is taken to quick. Why do you guys use weight distribution as an arguement for longer braking distances?? Don't you guys know that we have EBD? Is that right? Electronic Brake Distribution. Our cars will modify braking front and rear based on weight distribution. If we have more weight in the back it will make the rear brakes work a little harder.

06-17-2007, 11:50 AM	#30 (permalink)
RJJensen Senior Member Join Date: Apr 2007 Location: NJ Posts: 917 iTrader: 0 / 0%	while i agree that you feel a diff its hard to believe...i would think that the additional weight would make the car handle better...more weight in the rear = more traction over the rear tires...while there is some sloshing this is minimized by the use of baffles in the fuel tank plus there would be just as much if not more sloshing at half tank than full tank...im sure that there are some good technical docs on how sloshing affects handling but i couldnt find any...by the way how fast are you taking those turns?...lol..if its affecting ur handling that much u might want to take it in and get it checkd..or never fill it up...sry