Fuel Level Question
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 462
From: Southern Utah
richsteele: Thanks for that primer on the fuel system. All I can say is "WOW!"….and wonder how many GM engineers it took to design a system that would do the Space Shuttle proud. I sure as hell hope that, over the lifetime of the vehicle, it is as reliable as it is complicated. 
What's seems odd to me is that the two-tank set-up (vs a large single tank) would be beneficial to vehicle dynamics as result of better weight distribution, but that is obviously negated by the fact the system draws from the left tank, which stays 100% full until the right tank is completely emptied.
What's seems odd to me is that the two-tank set-up (vs a large single tank) would be beneficial to vehicle dynamics as result of better weight distribution, but that is obviously negated by the fact the system draws from the left tank, which stays 100% full until the right tank is completely emptied.
Le Mans Master
Joined: Dec 2004
Posts: 5,492
Likes: 808
From: West coast CA
richsteele: Thanks for that primer on the fuel system. All I can say is "WOW!"….and wonder how many GM engineers it took to design a system that would do the Space Shuttle proud. I sure as hell hope that, over the lifetime of the vehicle, it is as reliable as it is complicated.
What's seems odd to me is that the two-tank set-up (vs a large single tank) would be beneficial to vehicle dynamics as result of better weight distribution, but that is obviously negated by the fact the system draws from the left tank, which stays 100% full until the right tank is completely emptied.
What's seems odd to me is that the two-tank set-up (vs a large single tank) would be beneficial to vehicle dynamics as result of better weight distribution, but that is obviously negated by the fact the system draws from the left tank, which stays 100% full until the right tank is completely emptied.
The two tanks are at the lowest possible point in the car, positioned inside the wheelbase, and are well-protected by the frame rails. There have to be two of them because the transmission takes up the space in the middle.
It's way overcomplicated because of stupid government regulations. Imagine having to do a stainless pipe because too much hydrocarbon comes through the walls of a rubber hose...idiotic. I am thinking that the two tanks allow the fuel mass to be lower to the ground than one big tank would. The big tank would probably have to be located higher up in the car.
It's also pretty reliable. The problem is that it takes a bunch of hours to drop the tanks in order to get at the innards like the main pump or the level senders, which results in big labor charges.
Last edited by torquetube; Oct 31, 2013 at 02:29 AM.
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 462
From: Southern Utah
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
At 2 gallons used the fuel needle has moved. I prefer to look at the "F" level instead. Just me.
