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The MSR Dromedary bag uses the same thread pitch and diameter opening as Nalgene widemouth bottles.
This means that you can replace that three-way Dromedary bag lid with the single piece lid from a 32 ounce Nalgene watter bottle. You want the lid for this bottle: http://www.rei.com/cgi-bin/ncommerce...grfnbr=5760748 Your REI store may also stock just the lids for ~$1.00. Have fun! <snip> Not a good risk unless I can get better caps. The seal around the cap seems tight though. |
...one more point, Nalgene's primary business is providing containers for labs so these lids are water (fuel) proof and should be impervious to gasoline just like the MSR lid.
------------------ jim seattle r 100 gs |
Heheheh...
Well it seems that when you put a Nalgene lid on a Dromedary 10 liter bag and fill it with gas, a good liquid seal is not going to be a problem. The gas welds the parts together after a night. This came as a rather unpleasant surprise to me in a snowstorm on the Dalton highway, about 120 miles from the Arctic Ocean. Using a small screwdriver I managed to pry the lid off the plastic threads of the bag, and neither seemed to sustain much damage, and were usable again for the return trip... but these probably are not going to work many more times, as I imagine the bag's threads are slightly damaged each time. A metal lid might be better, if anyone knows of something with similar threads... or maybe some kind of powder between them, but then the lid might not seal perfectly. Also, I eventually realized that I should put the 2 10 liter bags inside the aluminum touratech cases, because anywhere outside risked catastrophic spillage in a crash (which I had, in 3 inches of snow, with calcium choride over mud...) and the lower they were, the less the slosh factor would screw up my balance and steering. After the mild tossup, I was glad that they were inside the case - but the case itself reeked of gas, and the sleeping bag I had inside a waterproof bag buniged to the top of the metal case also smelled of gas for about a day (no liquid gas ever escaped but the fumes did.) I've washed the bags and the box out, and hope to keep the Dromedary bags for use again later - I'm putting them in a plastic bag under my tools, and hopefully I can keep everything from reeking of gasoline along the way. |
MSR Dromedary fuel can results?
It has been some years and no doubt some miles since first you tested using MSR Dromlite bags to carry fuel in. Between the leaky cap issue and the ever-escaping fumes, the slosh factor and the danger of carrying them on the outside should you crash, what's your latest opinion of using the bags for carrying spare fuel?
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regarding evaporation through the MSR bags, this is to be expected, I remember the police for forensic samples used plastic bags, but if any accellerant from fire scenes or petroleum based liquids were to be sampled, the bags used were nylon, the fluid did not evaporate through them.
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Poor man’s solution that works well on an as-needed basis. Fill two large water or soda (get the sugar out!) bottles with fuel. Place in a bag; a couple of large plastic shopping bags will do.
Secure “fuel bag” somewhere on bike with a bungee between the bottles, atop the center of the bag. They’ll stay put just fine with a tight bag & bungee. With two of the largest bottles you can get about 1.5 gallons of fuel, which is adequate for a bike with a large (e.g. 5.8 gallon) tank traveling anywhere except the most remote locations. More than enough for anywhere in the Americas … unless of course you’re doing extended off road like the Transamerica Trail or old roads in the Rockies. Back to civilization – look for recycling bin for plastic bottles. Voila. |
I use Ortlieb bags with the same Nalgene lid. I did much the same testing, but I think the fuel-bag footie after months in the sun and rain may have been a little brutal! didn't notice any vapour seepage until it ended up in the rose bed and wept through the thorn hole. we used them for a few fill ups and prefer them to bottles as they are properly collapsible. I'd stay clear of further mods like duct tape cos its adding uncertainty rather than managing risk - what might the glue do to attack the bag?
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Collapsable Jerrican
I found this site www.turtlepac.com and they do a 20l colapsible jerrican that seems to be very handy for bike travels. folded up it measures 100mm x 550mm. They drop one of their bigger bladders from a helicopter without any damage. I haven't seen one in person, nor have I met any bikers using this bladder, but if it's up to scratch and the price is right, it will be very handy to get one.
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Have a look here Gas-O-Haul Emergency Gas Container - Each - Genuine Hotrod Hardware
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Wow!
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I am curious as to what range is need for these trips?
on my own bike I can now guarantee 320km before needing reserve. ( it was 280km before i changed the needles and needle jets) bike 1985 bmw r80rt not noted for being frugal. I do often carry a spare gallon can in one of the panniers, strangely seldom on camping trips because I then need the space for other stuff. |
colapsible fuel tank
Check out this site, <duramproducts.com,au> Go to containers and scope down. I was looking for a 5 gal container for my aircraft. Their containers are designed to hold volatile fuel.
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Collapsible 20 LITRE jerrycan
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