geez....I started this and now forgot what my question was.......erm, oh yes, ok erm right,
I have a high top which on motorways can be rather disconcerting when hit by a side wind, would extra weight at the lower end of vehicle improve the handling....doh
Wear Sunscreen wrote:
I have a high top which on motorways can be rather disconcerting when hit by a side wind, would extra weight at the lower end of vehicle improve the handling
err no, driving a lovely box as I do I can say it dont matter if you are on rails the wind will shove you if it wants, I drive a truck for work as well and 10 ton dont help either
Citizen Smith wrote:But anyway if you do the sums you will find that rolling resistance is almost unaffected by the difference in vehicle weight due to full or empty tank.
I don't care how you drive, Gravity pulls objects to earth at 9.8ms2 and as gravity converts mass to weight, the energy needed to move mass away from the point of gravity will be exponentially higher with a larger mass
or..
up hill you'll need more energy to move more weight : thus more fuel .
Come off it Kev while quoting those figures from your Science and Technology course book you completely omitted to mention that you get it all back when you go down the other side. Plus I don't think the relationship is exponential. Doh!
Cheers
Wolfie
Well-timed silence hath more eloquence than speech.
"A quiet shy boy who took little part in games or sport"
88 High top 2.1 WBX
.......you only claw it back if you freewheel down and doing that was generally given a thumbs down on a previous thread. Your engine is less efficient on the over run than when actually driving it. Look at any ECU programm and see what happens to the mixture on over run, it leans out! Simple fact, you need more energy to move a greater mass and Kevs basic argument is correct. However, how much difference having a full or empty tank compared to the overall weight of the vehicle is debatable. it probably doesn't make a fat lot of difference but there will be a difference even if very small.
AngeloEvs wrote:. Simple fact, you need more energy to move a greater mass and Kevs basic argument is correct. However, how much difference having a full or empty tank compared to the overall weight of the vehicle is debatable. it probably doesn't make a fat lot of difference but there will be a difference even if very small.
indeed
just quoting the findings of most rocketeers.. that's all.