Scooterotica

Here's my bright idea:

-Fit a 3 gal fuel cell, with approximately the same depth dimension as a stock tank, inside the leg shield.
-mount the fuel cell with its top at the same elevation as the top of the stock tank
-Run a 1/2" fuel line hose between the bottom of each fuel tank.
-fit two shut off valves as close to each tank as possible.
-let gravity do its magic.

Since liquid will always seek its own level, and the top of the two tanks is the same, I'm thinking the larger fuel cell will keep flowing into the stock tank, but not overfill it. The 1/2" fuel line will allow the pressure from gravity to always be greater than the pressure needed to keep fuel flowing though the 5/16 line from the stock tank into the carb. Both tanks vent at the top to equalize outside air pressure. Each shut off valve is used when re-fueling to keep the fuel line between the tanks from filling up with oil. The tank itself, being inside the leg shield will keep the center of gravity lower than if I tried to fit some gravity fed tank system on a rear rack. If the added fuel cell is deeper than the stock tank, I believe any fuel in the cell, below the level of the bottom of the stock tank, will never transfer.

I keep my stock looking scooter with tool and airbox intact. The entire rig is reversible, sans capping the 1/2" fitting in the bottom of the stock tank, and avoids messing with the existing fuel delivery system to the carb.

Is this totally stupid?

The aux tank will supply the fuel to the carb until the fuel tanks are equal in volume. Both will then supply fuel to the carb at an equal rate. If when the stock tank empties the aux tank will continue to supply fuel until empty. You would also have to fill both tanks carefully as fuel would try to transfer ( very slowly) as you would not have a balancing line, like the twin tank conversions using the steel toolboxes.

Star - are you Cannonballing?

I suppose it's a good idea only if it works To be honest, I think you should just remove the standard tank, airbox and toolbox to go with a long rang tank. After the event, put all that stuff back in. I wasted a lot of time on the Cannonball trying to devise a fueling system and ended up going with a long range tank and spare 1 gallon can. A couple of days in I ditched the spare can. The long range tank got me plenty far even running a TS1 and when it was time to refuel I desperately WANTED the break anyway. I had my fueling stops down to about 5 minutes or so. Fill, mix, pee, eat a piece of jerky, drink some water and back on the road.

Yes, and the CORSA, as sort of a shake down run the first week in June.

MarkH wrote:Star - are you Cannonballing?...