Longer range fuel tank(s)

[HandyAndy]

Originally Posted by georgenewman1

i dont have a copy of the book on me at the moment, but when you run a fiberglass rear end everything is cut off from the diff cage back im assunimg not reducing the strength, so would it not be possible to remove the two 19mm diagonals that go from the diff cage to the bottom of the rear tub hoop and just have a long tank in there with many baffles?????? just wondering

When fitting a GRP rear tub, the only parts from the original "Book Plans" that are removed are RP1, RP2 & RP3,s, (basically the round tube framework),

The parts D13,s are still used, tho are a slightly different dimension that then are attached to a 99cm length of 25mm box tube(known as GRP1) from the original mounting position on the diff cage,there are also 2 new lengths of 25mm box tube (known as GRP2,s,) welded into position from RS14 to the new GRP1 part,
so the strength is still there as per original "Book Spec", just without the round tubes that would normally support the Ali tub, as the GRP tub is "in a way" self supporting & attached to the chassis along the base of GRP1 & to D11,s & D9,D10.

cheers
andy

[baz-r]

Originally Posted by HandyAndy

When fitting a GRP rear tub, the only parts from the original "Book Plans" that are removed are RP1, RP2 & RP3,s, (basically the round tube framework),

The parts D13,s are still used, tho are a slightly different dimension that then are attached to a 99cm length of 25mm box tube(known as GRP1) from the original mounting position on the diff cage,there are also 2 new lengths of 25mm box tube (known as GRP2,s,) welded into position from RS14 to the new GRP1 part,
so the strength is still there as per original "Book Spec", just without the round tubes that would normally support the Ali tub, as the GRP tub is "in a way" self supporting & attached to the chassis along the base of GRP1 & to D11,s & D9,D10.

cheers
andy

my plan is to make a longer tank ditch d13 (i think thats the name of the bottom 19mm tube from diff cage to lower round tube) use grp frame to hold the tank and still fit a metal back end there was only two little strips of metal there witch now have been replaced buy a nice box frame to hold the uprated tank.
there are other ways to put d13 strength back in but as its all tied into the roll bar anyway i dont think theres much to worry about.

[robo]

Stirring up an old thread. No one has mentioned actual capacity here,how much does the standard tank hold? Has anyone built a bigger tank?

Bob

[gus]

The book tank holds 25lt. The tank i made for mine is 35lt, it is just a taller version of the book tank. there is a drawing on the forum for it.

[K4KEV]

intending to make mine from 3mm ally/twin baffles/swirl pot and 60ltr cap by going over the diff as well like an inverted L

[robo]

Originally Posted by K4KEV

intending to make mine from 3mm ally/twin baffles/swirl pot and 60ltr cap by going over the diff as well like an inverted L

That sounds more like it. It would make me a bit nervous embarking on any trip with 25ltrs of fuel. You are probably a bit closer to building your tank than i am, would be interested in your design.
Bob

[robo]

just had a thought. 60 ltrs of fuel is about 42kgs hanging on the rear of the car. Do you think the suspension would cope?

Bob