31 mpg?
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
I range everywhere from 38-45 depending on head wind, speed, and everything in-between. I don't worry about it unless the standard MPG is 35 (consistently). At 31 you should be running rich enough to see a lot of soot not only only your plugs but the inside of you pipes. You will need to take a good look at your fuel map's. If your's has a SERT either get handy with map manipulation or a Dyno might be in order.
It is tuned rich.
Tourer
Joined: Jun 2011
Posts: 280
Likes: 4
From: MN
http://pure-gas.org/index.jsp?stateprov=KS
http://pure-gas.org/extensions/map.html
Great web site
I see I got sucked into a 8 month old thread.
Last edited by b17467; Oct 29, 2012 at 07:12 PM. Reason: I got sucked into a 8 month old thread
Road Warrior
Joined: Oct 2012
Posts: 1,451
Likes: 1
From: South Florida
I have a 10 week old FLHX, she's still just a baby, and ride mostly 2 up and only get around 32-34 mpg. Rhinehart 4" slip ons. Rode across Alligator Alley and back with similar cross winds from Sandy here in S Florida on Saturday. Rode 320 miles. Tank and a half. 34 mpg was the best I could get. Riding mostly 75 - 80 mph on the same fuel.
Your bike is a sail in cross winds like that.
Your bike is a sail in cross winds like that.
Road Captain
Joined: Jan 2011
Posts: 547
Likes: 3
because you are giving accurate figures..........
The difference between 55 mph and 75 mph is where all your gas went.
The only hd's i see getting 50 mpg are light sportsters & dynas not heavy ultras.
Don't worry about internet bullshit as when you ride with these guys that get 50 mpg riding at 80 mph all day and monitor the bike & fuel intake for them they start coming up with excuses as to why suddenly there fuel usage has gone up.
The difference between 55 mph and 75 mph is where all your gas went.
The only hd's i see getting 50 mpg are light sportsters & dynas not heavy ultras.
Don't worry about internet bullshit as when you ride with these guys that get 50 mpg riding at 80 mph all day and monitor the bike & fuel intake for them they start coming up with excuses as to why suddenly there fuel usage has gone up.
Higher speeds will drop the mpg quite a bit. Check your tire pressures to make sure they are up to spec, lots of other good suggestions here. I am averaging just a bit over 45 mpg on the RK and don't usually worry about fill-ups until I get to around 200 trip odometer miles.
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