Reserve tank question
Ok, let's say by some accident, you leave your switch to running on the reserve only and deplete 50% of the reserve then switch back to your main tank that is full.
Does the reserve fill up from the main tank?
So hypothetical situation.. you have 5l in reserve and 10l in main tank.
You then use 2.5l from the reserve and switch to the main tank.
At this point, do you have 5l in the reserve and 7.5 in the main tank...
or would you have 2.5l in the reserve and 10l in the main tank?
I believe it's usually just one tank with two different points the fuel is drawn from.
The "main" being higher in the tank than the "reserve".
reserve is a misnomer. you don't have two tanks, one inside the other.
you have a pair of vertical tubes inside the tank, with holes in them. the taller one is your main, the shorter is your reserve. when gas no longer drops into the tall tube, you switch to reserve, which just opens up the hole in the short tube. you are on reserve when the gas in the tank reaches a certain level.
ah.. clears things up perfectly.
Although, there are some bikes that do have a separate reserve tank like the Yamaha Viragos. The reserve tank was under the seat and the reserve was a switch on the handlebars that activated a fuel pump.
But, even with the Virago design, the reserve tank fills up from the main tank.
and most older harleys have two tanks too..
Originally Posted by BigRed
but his ex500 doesn't, and i am pretty sure he was asking about how reserve applied to his bike.