Originally Posted by Zoltar14
On tarmac, doing 80 to 100 km/h I use 1 litre for 23 km. That is without heavy luggage.
I know my fuel consumption will go up (a lot) riding off-road whilst carrying a lot of weight.
But how much will it go up?
Will I use 1 litre every 10 km? More? Less?
I'm planning to cross the Sahara and want to know if I should build a rack for 2 20 litre jerrycans or 2 10 litre ones.
I already fit the 23 litre Acerbis tank.
I would presume your fuel efficiency to be 25% less than tarmac.
Also, do NOT use the distance from Point A to Point B as the distance you will cover on the bike, because you won't ride "as the crow flies" in the desert. Add another 25% on top of of the "crow's distance" between two points.
2 20 litre jerry cans are HEAVY...you will spill fuel while trying to fill your tank...due to windy conditions, weight of a full 20l jerry can, etc. Carry several 5 litre(max) bidons...used oil bidons work well and are relatively abundant.
If you want to build a rack, build it where the passenger footpegs are, BUT be careful not to have them extend out too far, as they will clip your heel when you're trying to push & ride the bike out of sand...causing you to fall.
See pics for details...