70 MPH into a headwind will dramatically affect MPG.
There is an old myth about Goldwings and the 3000+ RPM being the place where mileage is greatly reduced -
I maintain it is aerodynamic drag that is the greatest reduction of MPG -
Case in point - even with the new Modified final drive , which causes RPMs to drop (I think under 3000 or right near at 70MPH) the MPG is reduced from additional aerodynamic drag.
Conversely one can run twisty roads all day long at 3500+ RPM (but 30-50 MPH) and get great MPG .
Agree with Glockjock. Doubling the speed results in the quadrupling of the aerodynamic drag.YES! I often get on my soapbox about aerodynamic drag being the culprit, not rpms. I once did a detailed test of running in 4th gear versus 5th gear to test my theory. I proved it to myself, but Doubting Thomases didn't buy it.
While that would be the obvious first choice I disagree -My worthless opinion is that changing the final drive gear ratio will gain nothing more than a lighter wallet.
What I glean from this is:Sorry about all the delay in posting updates but have been having internet connection problems for days. I am now in Roswell New Mexico with family and no internet problems. Update as follows left St. Louis area on Wednesday morning heading to St. Joe filled up in bowling green mo on may 5. 15,380 miles on odometer light for fuel on at 195 on trip filled with 5.9 gallons next stop for fuel Dearborn mo may 5 at 15,611 light on a 195 trip filled with 6.5 gallons 230 miles next stop wamego ks may 6 15,800 5.4 gallons next stop Ellenwood ks may 7 15,991 5.6 gallons next on may8 Dodge city ks 16,130 4.2 gallons next stop Boise Oklahoma may 8 16315 5.5 gallons but head winds Raton new Mexico on may 9 16441 head winds 4.1 gallons next stop Hereford Texas on may 9 16,658 filled with 5.6 gallons no wind cruising set 75mph Resting up and visiting for awhile before heading out towards 4 corners and monument valley. Will do my best to make updates timely but internet spotty. This is a month long trip so hang with me.
At 75 MPH -- ? Seems normalish to me - No big advantage on MPG at lower RPMs at 75+/- MPHWhat I glean from this is:
Seven fill-up totaling 37.0 gallons
Total miles of 1278 miles
You are averaging 34.5 mpg for the trip so far.
Is that about right?
So, have you experienced any problems Any oil leakage from the final drive? Any drips out the bottom drain hole?
A buddy just rode up to the 4 corners last week. CLOSED.Resting up and visiting for awhile before heading out towards 4 corners and monument valley.