gas mileage? - Page 6 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #51 of 60 (permalink) Old 06-29-2008, 04:15 AM
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just did a check and I'm getting right at 47 mpg.
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post #52 of 60 (permalink) Old 05-04-2010, 01:40 PM
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http://www.fuelly.com/driver/mac84/vulcan

Mostly city riding, and I like to put the "pedal to the metal" a lot.

2006 VN750 acquired March, 2010, 19,544 miles
Currently 20,147 miles (5/1/2010)
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post #53 of 60 (permalink) Old 05-08-2010, 02:41 PM
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Discovered something on my recent ride to Missouri and back. I normally get around 48 mpg riding locally at speeds 55 and under. On the interstate, it goes down to as low as 35 mpg if I get above 75 mph.

There was a very stiff wind from the NW that was gusting so hard it would blow the bike all over the place. Noticed that when a semi passed me that the turbulence it created was much less than the wind buffeting, so I stayed in his wake until I had to exit for gas. Repeated the procedure until I got to my destination. When I was behind semi's, doing 70-75 mph, I was getting 50-52 mpg!

Anyone else had similar results?

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
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post #54 of 60 (permalink) Old 05-08-2010, 02:58 PM
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I enjoy striving for better gas mileage, but I would never draft a semi in a car, never mind a bike. The restricted visibility and maneuvering space on a public road are just too risky.
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post #55 of 60 (permalink) Old 05-08-2010, 05:24 PM
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I've been getting between 47-50. And I like going through the gears!


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post #56 of 60 (permalink) Old 05-08-2010, 05:58 PM
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Quote:
Originally Posted by IMBoring25 View Post
I enjoy striving for better gas mileage, but I would never draft a semi in a car, never mind a bike. The restricted visibility and maneuvering space on a public road are just too risky.
Life is short WTF ! I drafted a semi from Ga. to Ms. & Ga. to & from Fla. ,speed up to 100. Dumb......ya, But I was young & Dumb too. I've had the police after me on 85n from Downtown to Buford @160mph + {not the vn750,on a gsx/R 750} That put me in "Prison Work Camp" for DUI,Racing,Pissing off cops,Ect....for 180 days in '89.... The good o'le days. I'm a cruser now/But would still DRAFT if on the highway!

Last edited by Wileysden; 05-08-2010 at 06:17 PM.
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post #57 of 60 (permalink) Old 05-08-2010, 06:47 PM
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Quote:
Originally Posted by IMBoring25 View Post
I enjoy striving for better gas mileage, but I would never draft a semi in a car, never mind a bike. The restricted visibility and maneuvering space on a public road are just too risky.
I understand. I've seen folks in cages drafting semi's so close if the semi touched his brakes they were gonna make contact before the drafter could slow down. Had a guy in a pickup decapitate himself on the local Interstate a couple of years ago drafting a semi.

I kept two seconds following distance and was extremely alert for tire chunks and other things that might come my way. I felt it was better to be behind the truck where I could control the bike better than to have the wind push me into a cage. There is more maneuvering space on the Interstate (which is what I was traveling) than most other roads.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
_____________________________________________
"Black Beauty"
1989 VN750 acquired December, 2008, 6,711 miles
Currently 23,298 miles

Old Blue
2001 Honda CMX250 Rebel acquired July, 2008

1987 VN750 project bike, acquired August, 2009, 33,000 miles and balancer sticking out of the case, currently awaiting attention and parts
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post #58 of 60 (permalink) Old 05-09-2010, 01:12 AM
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Basic Aerodynamics. In your case you were riding in the "wake" of the truck and thus had to expend less energy to push the air out of your way.

Here's a guy to took the design to it's logical end. http://ecomodder.com/blog/diy-aero-f...cycle-214-mpg/

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post #59 of 60 (permalink) Old 05-09-2010, 01:38 AM
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Try a tanker

Quote:
Originally Posted by flitecontrol View Post
I kept two seconds following distance and was extremely alert for tire chunks and other things that might come my way. I felt it was better to be behind the truck where I could control the bike better than to have the wind push me into a cage.
I draft at a safe distance with tanker trucks. They seem to have a cleaner wake and you don't need to be as close to a 'van' box. It makes a big difference with my GL500.

DT

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post #60 of 60 (permalink) Old 05-09-2010, 11:32 AM
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Quote:
Originally Posted by Wileysden View Post
Life is short WTF ! I drafted a semi from Ga. to Ms. & Ga. to & from Fla. ,speed up to 100. Dumb......ya, But I was young & Dumb too. I've had the police after me on 85n from Downtown to Buford @160mph + {not the vn750,on a gsx/R 750} That put me in "Prison Work Camp" for DUI,Racing,Pissing off cops,Ect....for 180 days in '89.... The good o'le days. I'm a cruser now/But would still DRAFT if on the highway!
there is a speed limit on I85 when we were down there building phillips arena i was doing 80-90 mph and people were still passing me like grandma in the slow lane.


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