This is for carrying on a motorcycle.
It's flow rate is rather low of course, but when one needs to transfer a bit of fuel to a friend, then it's going to be invaluable.
It takes way less space than a spare fuel container. I drilled and inserted a small bit of wire into it, because who want's to have this fall off inside their fuel tank.
The tubing is PVC tubing 6 x 1.5mm. the wire is .5mm inconel locking wire. (anything will do if it's small diameter)
I printed this from PETG .4mm nozzle. One at a time because I want the maximum Z-bond so it doesn't fall appart.
The author remixed this model.
I modeled this while looking at DrJone's siphon. after discussing briefly with him how to get it working on small tube and looking on wikipedia I ended up with this design.