Why does raising vehicle reduces fuel consumption?

[Mustank]

recently i raised my truck's suspension

 

not hiong like those jimmys

 

very marginal one ........ really trust me

 

but after the raise of about 2 inches, fuel consumption has reduced by about 10%

 

anyone knows why is this so?

[So_nice]

i believe its juz an one-off ba. try 2 more tanks.

[Mustank]

5-6 tanks liao leh...... really don understand why

[Kangadrool]

Should be the reverse. But, maybe you drive more gentle due higher CG scared your truck topple.

[Jp66]

5-6 tanks liao leh...... really don understand why

Maybe now you have more space below, so more wind flow under and help lift the truck while moving....

[Mustank]

actually initially iwas quite scared really.....very scary.....suspensionis defintely softer....turn left, turn right...all very slow.....

 

but later, reverted to the bad old self ......fuel consumption about 10% lesser than normal leh.....

[Mustank]

maybe i don know man......but i am thinking of passing over this 10% savings to increase the width of the tyres by 10% (from 255 to 275)....safety is no.1 for me

 

increasing the width by 10% is likely to result in 10% increase in fuel consumption (i think)

Edited July 1, 2010 by Mustank

[Furrynadz]

read up on drag coefficient and drag area

http://en.wikipedia.org/wiki/Automobile_drag_coefficient

http://www.gmecca.com/byorc/dtipsaerodynamics.html

 

your drag coefficient is constant from vehicle shape, but your frontal drag area increased

 

cars like citroen c5 fitted with hydraactive system lower themselves at higher speed on smooth road surface to reduce drag

Edited July 1, 2010 by Furrynadz

[Mustank]

but that's the strange thing......theoratically, lifting should increase drag......yet i am experiencing better fuel consumption.....

 

maybe, i don go beyond 100 and therefore drag not so bad

[Aeromania]

Aerodynamic. Ground clearance higher means more air can flow through the bottom so will have less resistance. For those racing cars they always adjust until very low or add front lip spoiler so that the downforce will push their vehicle down so that during high speed wun peng so easily but due to the massive resistance, fuel consumption will be quite chor.

[Xavina]

from what i understand, the higher ur ride, the bigger the frontal area. Bigger frontal area = lesser aerodynamic :P

Well, maybe its smashing thru the air right now, instead of flowing thru it

 

Edited July 1, 2010 by Xavina

[Transfoamer]

Higher = Less Gravity = More Power to Weight Ratio

or formula

sk56lgi^ua56.889s@/khjt@*0.00344/sdf(6.888/asf)*wth2/wth4>tsaf*0.pie.99

 

[Mustank]

whoa!!!! your formula very very chim man

 

 

[Ladykillerz]

this car should have a FC of a Toyota Prius. =x