OnHellas wrote: ↑Sun Apr 28, 2019 8:58 pm Me again. So the CRF has a 9-litre tank as standard I think.
The IMS tank holds 14 litres.
This for me is probably the route I would choose for the following reasons.
It’ll fit the bike and won’t fall off.
The weight will be up front rather than having even more at the back with your luggage.
You’ll probably be carrying plenty with your tools, camping? clothes etc so having one less item to carry and try to strap on will be a bonus.
Much less thieveability (if that’s a word?)
Once you’ve finished with the big the tank will be very sellable therefore recouping some of the original outlay. Just make sure you keep all of the standard stuff of course.
You probably already know the golden rule when in remote places ‘when you see fuel, buy fuel.’
It's always that initial outlay that puts me off the camel tanks and others and this is what is attracting me to the Desert Fox solution as a couple of those will double my range. I agree with your conclusions about the location and "thieveability" of a larger tank in the original location, however, the Rally's tank is a little larger than on the CRF250 L (10.7 litres opposed to 7.8 litres), so the increased capacity of the Acerbis or similar tank doesn't make as much economic sense.
This is where my quandary seems to be: finding a solution that will give plenty of range without breaking the bank. If the rear positioned Camel Tank (above) had come in at around £200, it would have been a viable proposition but, with the weak pound and high shipping costs, it becomes a little too expensive. Maybe I should contact them and see if I can get a deal for two tanks...?
Thinking about this; maybe a combination of a Camel Tank and a Desert Fox... too much to think about!