optimal RPM during world trip? F650 GS
 

Hi,

Maybe a bit strange but I'm wondering what you guys think of the optimal speed / rpm on the f650 gs Dakar (2000). I feel that it's 'snorkeling' a bit around 3700 rpm. Above 4000 rpm she's great.

I'm talking about driving on tarmac or gravel. Normally I'll do 90 - 100 km/h with approx 4000rpm.

what do you think?

Balance the mpg against the speed. I get great milage at 60 or so, but it starts to drop above 70.

Not quite sure what to make of "snorkeling" :biggrin3:. But, I remember that even my '06 Dakar (FI) was happier above 4,000rpm.

He could mean "Surging" or "hunting" at the lower RPM. I'm thinking an F.I. Re-map could solve this, going richer in the 1/4 to 1/2 throttle range may help. See BMW or after market to hack into the computer and change the map in the low range.

Due to the lean F.I. settings (for Euro 2 and 3) you will normally get this on many bikes. And this is why that BMW gets such GOOD fuel economy. Solving the Surging may cost a bit in fuel.

use 15 teeth instead of 16 in front and 49 for the 47 at the back (not sure tne english name, sprocket?)
it will increase fuell consomption :scooter:but it will be easier on slow tracks
it will be easier to be around 4000 and not speeding
cheers