The Great Gas Tank Mystery

To see the pictures that go along with this, go to:

http://www.california.com/~eagle/tank.html
- ---------
THE GREAT

GAS TANK MYSTERY

Why is the reserve not really a reserve?
Why does gas disappear from one tank and magically appear in the other?
Why does the generator run out of gas when there is still gas in the tank?

The tank in the rear is the main tank. The fill tube connects both thanks
at about the 1/4 full
level. Both tanks fill to the same level once past the 1/4 level. The
Generator draws from about
the 1/4 level so that it will not draw the tank dry. The Engine draws from
which ever tank is
selected by the selector switch. This switch also selects the correct gas
gauge for the tank
selected.

If the main tank (rear) is selected and used until it is empty, there
remains about 7 to 9 gallons in
the Auxiliary tank, unless you go up or down hill as you will soon see.
The generator will not
run when the main tank is below the 1/4 full level.


When you go up hill, the gas runs from the auxiliary tank to the main tank
through the fill tube..
When you get level again, the gas will seek the same level in both tanks
through the fill tube. If
you had the Aux tank selected before you went up hill, a lot of your gas
gauge reading just went
into the main tank.

If you go down hill or park down hill, the gas will flow to the Aux tank.
The generator will get
no gas if the tanks are low.

Isn't this fun???
gene

Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/
 
Yep since you are sticking around the place, might be a good time to fook
for a Freddie Jr. There are some ole boys out there that could use a
friend.

I am using Easy draw because finally it will do some electronic stuff as
well as import and export jpg pictures so I can write on them.

http://smartdraw.com/

gene

>In a message dated 7/5/2000 11:29:52 PM Eastern Daylight Time,

>
>> I took a shot at the gas tank description. If you have any suggestions or
>> corrections let me know
>>
>> http://www.california.com/~eagle/tank.html
>
>Nice job "mrerf". I kinda like that name instead of Eugene or Gene. My
>opinion of course. Now what happens when the coach is driven on a highly
>banked curve? What did you use to make your drawings?
>
>Scott
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/
 
>I took a shot at the gas tank description. If you have any suggestions or
>corrections let me know
>
>http://www.california.com/~eagle/tank.html
>
>gene
>'
>Genef -- 77PB/ore/ca
>GMC MOTORHOME INFORMATION
>mr.erf
>http://www.california.com/~eagle/

Gene - excellent job. The shifting of the gas from one tank to the
other is not quite as drastic as you show since the tanks are
connected at the midpoint of the sides, not at the front and back as
you show in your diagrams but your draawings get the point across
very well.

For those who have put on a TBI and have the return line going into
the lower end of the filler tube there are some other effects. I
have found that when my tanks get down to the 1/4 full level I have
to keep switching my tank selector back and forth as I drive because
the fuel pump is pumping gas back to the tanks and it is flowing
through the fill tube to both tanks even though it is pumping out of
only one.

Emery Stora
77 Kingsley
Santa Fe, NM
 
thanks I added this info

gene

>>I took a shot at the gas tank description. If you have any suggestions or
>>corrections let me know
>>
>>http://www.california.com/~eagle/tank.html
>>
>>gene
>>'
>>Genef -- 77PB/ore/ca
>>GMC MOTORHOME INFORMATION
>>mr.erf
>>http://www.california.com/~eagle/
>
>Gene - excellent job. The shifting of the gas from one tank to the
>other is not quite as drastic as you show since the tanks are
>connected at the midpoint of the sides, not at the front and back as
>you show in your diagrams but your draawings get the point across
>very well.
>
>For those who have put on a TBI and have the return line going into
>the lower end of the filler tube there are some other effects. I
>have found that when my tanks get down to the 1/4 full level I have
>to keep switching my tank selector back and forth as I drive because
>the fuel pump is pumping gas back to the tanks and it is flowing
>through the fill tube to both tanks even though it is pumping out of
>only one.
>
>Emery Stora
>77 Kingsley
>Santa Fe, NM
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/
 
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