Here are some pics of my gas packing setup. In the first pic you can see that I have two lines going into the check valved tank breather line. One line goes to a 2 liter MSR Dromedary bag and the other goes to a quick twist valve. When the bag has syphoned empty a quick turn of the valve and it now acts as a breather tube. The second pic shows the check valve in the breather tube. The third pic shows a 4 liter MSR bag that I use in my back pack. I can fill it with whatever amount I want and have it conform to the space in my back pack. The bags are very tough and I have yet to have one leak or think about tearing. Lots of impacts and I have stored gas in them for months with pressure on the bag to test for degradation of the liner. No Issues. I use a DirtBikeGear.com number plate tool bag to carry the bags. It is very adjustable and can be strapped right on top of the fender or above the head light like I do. I also use a FreeFlo breather/check valve combination tube. The tool bag will carry more than the 2 liters but I am trying to limit the amount of high weight. The Dromedary bags have a large fill mouth and a smaller emptying cap. MSR also sells a breather line adapter cap to hook into your line. They really are easy to use and pretty trick. As Jake said though these are not really an answer for racing as you have to stop to crack the breather valve when the bag is empty.
Thanks for the pics and write-up Wally I gather that the fuel flowing out of the main tank creates the vacuum that starts the fuel siphoning from the MSR bag? This type of setup should work well for me- not for racing, but for some adventure type events I plan on doing this year.
Slowpoke, That is correct. There is a little leeway time when the bag runs dry because the tank will flow a little gas with a slight vacuum. It is really just a matter of getting used to when it runs dry. I just feel the bag when ever I take a break and it is easy to feel it get close. If there are a couple of oz's of gas left in the bag I switch over and go. Walt
Ace hardware. It is just a drain valve for a pressure tank. just screw on a 1/4" npt to barb fitting to the 1/4" drain valve and then get a 1/4" barbed "T". Walt
