Auxiliary Fuel Tanks ?

[simi_ed]

Bill, maybe you need to do like Mike Ramos & carry an additional auxiliary tank!  
What do they call that?  Cathater

A Texas catheter connected to a hose running down your pant leg, poking out below your boot.

I thought that was called a Peeto (pitot) tube  

[ribbert]

My bladder capacity/ mileage is currently slightly smaller than the tank on the bike. This does not seem to be improving with age.


Not sure if I see the benefit of the additional fuel without somehow increasing the capacity of my bladder.

For me it's not about not stopping, but fuel availability. I don't think it's healthy/safe to ride more than a tankful without a break, even a short one, anyway. The lost time is more than made up for by being refreshed and focused again. Riding a bike continuously is far more demanding than driving and you need to regularly break the cycle (before you break the bike)

Some of suggestions here are getting a little complicated, you did say this was for a one-off event? You need to balance up the effort and cost against the amount of use it's going to get.

If it's just for one event you could simply do something like this making very sure there is nothing likely to puncture them or rub through with vibrations and movement. Just pack them out with a couple of old heavily folded towels. I have done this myself many times before getting the proper bladders.



Search Google Images for "Motorbike fuel bladders" and you will see all sorts of ideas for cheap ways to carry extra fuel.

Noel