Showing 0 to 5 of 6 Results

Wall Post (164786)

#mileage so that we remember, is 2114.

2 years ago byYermo
Wall Post (153654)

I really need to add a mileage field to the project entry and a maintenance log. #dr650se #mileage 28398.6

3 years ago byYermo
Photo (10117)
Yermo
9 years ago
Turned 100K on the Blue Ridge Parkway.

Turned 100K on the Blue Ridge Parkway.

My bike turned 100K miles on the Blue Ridge Parkway while riding with the same two guys I was riding with when I bought it 22 years ago.
Photo (10115)
Yermo
9 years ago
99999 just as I rolled up to the Parkway in June 2014

99999 just as I rolled up to the Parkway in June 2014

"How cool would it be if you turned 100,000 on the Parkway?" Duncan had asked. By sheer coincidence my bike turned 99,999 just as we rolled up to the parkway. 22 years earlier, when I just got the bike, I rode across the country with Duncan to go meet Bruce. Here I was, 22 years later, riding with the same two guys. Awesome.
Photo (10011)
Yermo
9 years ago
99,999 and the Blue Ridge Parkway

99,999 and the Blue Ridge Parkway

Coincidentally, the bike hit 99,999 just as we rolled up to the southern section of the Blue Ridge Parkway. It seemed strangely fitting.
Post (6843)

Yermo(https://adv-traveler.com/yermo) good thread on the subject here: dr650 fuel mileage - ADVrider(https://adv-traveler.com/136/links/6842/-dr650-fuel-mileage---advrider) Basically, "Your actual mileage will vary" :-) . The general concensus is that the DR will get between 20MPG and 60MPG LOL. that's not at all surprising though considering that it is a relatively large single cylinder, no aerodynamics, with incredible variation in the amount of drag and load applied. Ever accessory adds drag and weight, riders add drag and weight, knobbies add drag and friction induced drag. A, relatively, low horsepower motor will have large swings in efficiency as it deals with load changes. Also it will be far more susceptible to things like bad jetting (or more likely incorrect for the exact current circumstances jetting), gearing changes, etc. I should clarify that my "30-50mph" efficiency comment was steady state throttle, stop and go mileage will be much worse because the engine is never running at peak efficiency while also travelling minimal distance. Internal combustion engines are at maximum efficiency at full load, in steady state travel that tends to equate to velocity which gives higher mileage (the sum of efficiencies exceeds the sum of deficiencies). There will be a velocity though where the aerodynamic and friction loss drag increases to a point where overal efficiency begin to degrade - resulting in ever decreasing mileage. Thus, best mileage is when the engine is operating closest to maximum efficiency, engine work product (horsepower produced) is used for forward velocity (versus "power" to climb obstacles at lower speeds), and all drag forces are minimal. Anything that reduces engine efficiency (for example not running at the correct stoichiometric ratio), reduces velocity per RPM (shorter gearing), or increases negative forces (friction and drag), will result in lower MPG. If higher mileage is a goal for you I would start with taller gearing (sprocket change), trying different jetting needles, and looking for friction. Carbs are awesome except when they aren't, worth you taking them apart and rejetting them for YOU'RE desired results if they aren't right.

10 years ago byrshaug