1990 1500 Aspencade fuel mileage question


Information and questions on GL1500 Goldwings (1988-2000)
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702scottc
Posts: 249
Joined: Tue May 15, 2012 12:12 am
Location: Las Vegas, Nevada
Motorcycle: 1980 GL1100 Interstate (sold)
1990 GL1500 Aspencade (sold)
2005 GL1800

1990 1500 Aspencade fuel mileage question

Postby 702scottc » Tue Apr 22, 2014 8:54 am



Can any of you other 1500 owners give me a idea of what kind f fuel mileage your units typically get? I recently purchased a 1990 and the bike runs flawless but really doesn't get great mileage. I returned from a 1500 mile road trip last week and the bike only averaged 31 mpg. The speed limits on the interstates out west are 70 - 75 mph so I would expect to use more fuel at those speeds. My 1981 1100 Interstate always gets around 35 mpg at those speeds pretty consistently which is respectable for a 4 carb engine of those years. I realize this bike has 6 cylinders and weighs a bit more than the 1100 but the engine spins slower at 75 than the 1100 and gets there a lot easier. Let me know what some of your bikes get so I don't feel so bad!



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Dusty Boots
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Location: Alvinston, SW ON
Motorcycle: 1992 GL1500Aspencade

Re: 1990 1500 Aspencade fuel mileage question

Postby Dusty Boots » Tue Apr 22, 2014 1:53 pm

I average 37-38 mpg riding solo and running @ 65 mph.

The 1500 is a good bit heavier than any of the 4 bangers, but it is also a good bit wider, so aerodynamic drag comes into greater play with the 1500s.

Try and reduce any right wrist twisting to the bare minimum, to achieve greater fuel economy.
Have you installed a new air breather element and plugs, yet?

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702scottc
Posts: 249
Joined: Tue May 15, 2012 12:12 am
Location: Las Vegas, Nevada
Motorcycle: 1980 GL1100 Interstate (sold)
1990 GL1500 Aspencade (sold)
2005 GL1800

Re: 1990 1500 Aspencade fuel mileage question

Postby 702scottc » Tue Apr 22, 2014 3:40 pm

The filter is a K @ N that I cleaned a oiled, the plugs where changed before I bought it, runs great so they are probably fine. At 65 mph it would probably get around 35mpg 1 up. problem out here is if you run 65 you get ran over..lol. Its not that big of a deal, it is a big bike with a larger Memphis shades windscreen so that probably accounts for some of it. I ride 1 up most of the time and i use the cruise whenever I can. The larger engine and the comfort come at a price I guess.

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WingAdmin
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Motorcycle: 2000 GL1500 SE
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1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 1990 1500 Aspencade fuel mileage question

Postby WingAdmin » Tue Apr 22, 2014 3:51 pm

Dusty Boots wrote:I average 37-38 mpg riding solo and running @ 65 mph.

The 1500 is a good bit heavier than any of the 4 bangers, but it is also a good bit wider, so aerodynamic drag comes into greater play with the 1500s.

Try and reduce any right wrist twisting to the bare minimum, to achieve greater fuel economy.
Have you installed a new air breather element and plugs, yet?


It's also not tremendously aerodynamic (just like any motorcycle). My mileage drops precipitously above 70 mph.

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Dusty Boots
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Location: Alvinston, SW ON
Motorcycle: 1992 GL1500Aspencade

Re: 1990 1500 Aspencade fuel mileage question

Postby Dusty Boots » Tue Apr 22, 2014 4:24 pm

702scottc wrote: At 65 mph it would probably get around 35mpg 1 up. problem out here is if you run 65 you get ran over..lol.


Then keep off the Interstates!
I always ride 2 lane roads/highways whenever possible, as traffic is usually a lot lighter and you make almost as good time due to not having to stop so often for fuel.

Anything over 72 mph and you start sucking back the fuel, because it takes a lot more energy to push that large barn door through the air at that speed than say 60-65! (aerodynamic drag)

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mikelens
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Location: Bay Shore, New York
Motorcycle: 1990 GL1500

Re: 1990 1500 Aspencade fuel mileage question

Postby mikelens » Tue Apr 22, 2014 6:11 pm

On a recent 500 mile ride; my '90 1500 average 36-37 MPG doing the back roads. Heading home we did mostly interstate & I got around 41 MPG keeping it between 65 & 70 MPH. Don't know how much better that will make you feel.

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702scottc
Posts: 249
Joined: Tue May 15, 2012 12:12 am
Location: Las Vegas, Nevada
Motorcycle: 1980 GL1100 Interstate (sold)
1990 GL1500 Aspencade (sold)
2005 GL1800

Re: 1990 1500 Aspencade fuel mileage question

Postby 702scottc » Tue Apr 22, 2014 10:20 pm

2 lanes are always best. Unfortunately, in southern Nevada you have to ride 100 miles in any direction to get to a decent 2 lane ride.. I'm sure in the north country 2 lanes are everywhere. On the bright side, we ride year round down here and it rarely gets below freezing, not like what you folks deal with. That pesky white stuff we never see, only 115 in the shade ! I feel better knowing the mileage isn't far off from everyone else. It sure runs good for a barn door!

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bohdan
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Motorcycle: 1977 GL1000
1977 GL1000
1977 GL1000
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Re: 1990 1500 Aspencade fuel mileage question

Postby bohdan » Wed Apr 23, 2014 6:20 am

I use my bike to do my traveling for my job weather pending. I usually go a bit faster than the speed limit. Let's say the first digit is an 8. I get 30 all the time on my 93

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dingdong
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Re: 1990 1500 Aspencade fuel mileage question

Postby dingdong » Wed Apr 23, 2014 7:22 am

The only time I get as low as 31 on my 93 is when I pull the trailer and ride two up. Riding in the wind effects the mileage more than anything. Normal solo average is around 37 to 40+. On two lane roads riding solo 55 to 60mph I can go even higher. I have a Tulsa extra tall wind shield also. I sometimes wonder if the extreme slope of the Tulsa helps in deflecting the wind.????
Tom

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Fiberthree
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Re: 1990 1500 Aspencade fuel mileage question

Postby Fiberthree » Sat Apr 26, 2014 7:42 pm

I average around 35MPG riding solo. With the wife on board i can get close to 40. I haven't figured it out yet but I'm not taking her to work with me! (I have detailed spreadsheets to back up the figures)


Ed

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