Auxiliary fuel tank

Perhaps a flexible bladder that could be placed in a saddle bag would be ideal. Could be removed; a simple pump could be used to transfer to main tank using a single line as no venting is needed because it would collapse as fuel is consumed. Search flexible fuel and liquid containers for possible options.
 
The idea of carrying a gallon or two extra really makes sense no matter what style of riding your doing. Congested areas usually aren't where I buy my gas. A real pain in the as* getting around traffic to the pumps.

My complaint is the Rocket 3T really is difficult to fill the last 2 gallons. The fuel splashes back. Any solutions to this issue? 6 gallons is a hell of a lot better than the 4 1/2 gallons I end up with!
 
For me the issue is technical inspection. Some of the rides I do require that you pass inspection. Rubber bladders won't cut it...as a matter of fact neither will plastic fuel tanks. Any extra fuel has to be in a "crash survivable" auxiliary tank
 

LMAO...I would bet that your tank is full when you finish filling up. I usually put 4 to 4.5 gals in on a normal fill up unless I run it completely dry in which case mine takes 6.18 gallons. If I have to put in 6.18 gallons it means that I coasted into the pump with a dead bike...don't ask me how I know
 
Time to chime in. Dude has a Rocket III TOURING <== key word, TOURING. As in getting out and riding around the country comfortably and looking at things other than the next bar or 1/4 mile strip.

Stopping around 150 miles or so for gas on a Touring bike is just aggravating.

I did a lot of LD riding on my R3 Standard and it is not an appropriate mount for that kind of riding. So I bought a Trophy for the serious LD rides and rallies.

I fitted a TourTank to the Trophy to extend my range up to about 400 miles between fills. Yeah, I can make it without having to stop and pee every 100 miles.

I had a quick disconnect mount made that allows fitting in about 10 minutes. The tank mounts above the rear seat and is a gravity transfer type. When the low fuel light comes on for the main tank, I reach back and turn the valve to refill the main. Takes about 10 minutes to transfer 4 gallons back into the main.

A TourTank could be easily fitted to the luggage rack of an R3T. They are not expensive either.

 
DO you carry gas in your car also ? how bout emergency food and drink and an easy leaker or PORTA POTTY ya never know what might happen .
 
YES your my hero no stopping for 400 miles thats the way to do it sounds like some fantastic fun do you ever wear diapers ?
 
SO do you have to stop to turn on the spare tank or can you do on the fly GOD forbid you have to stop LOL.