What's your MPG? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 21 (permalink) Old 05-20-2019, 12:10 AM Thread Starter
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What's your MPG?

I'm getting 44.5 measured mpg with my 110 front tire, so 45.5 mpg. I cruise at 70mph, and I weigh 180. I'm not the lightest on the throttle, but I'm not drag racing every green light either. This is post ear shave, with GB, and open pipes post GB, running 40/143 jets.

I think I'm actually doing better than before the ear shave! Last year, I was 43-44.

Next tank, I'm going to see how high I can get it. My record last year was 51. Granny riding, here I come!


'89 Vulcan 750 Bought 4/12/18 @ 17805.9 miles $800
Purchased stock. Wrecked once
22490.0+ miles

Completed modifications:
Removed mufflers, straight pipes out of GB
110/90 Front Tire
Pick-up coil re-gapped to .020"
Compufire 55402 r/r series regulator
USB Outlet + Voltmeter
Repainted Metallic Blue w/ new tank bages
Ear Shave (wo/ coasters) 40/140 NO shims 45MPG
MCCT conversion

Planned modifications:
Custom LED turn signals
Windshield
Highway Pegs
(Possible) ignition advance
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post #2 of 21 (permalink) Old 05-20-2019, 12:29 AM Thread Starter
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I found this on an old thread. I see that Wolfie is a banned member. Did he ever explain his updates to the ignition system?

Quote:
Originally Posted by Wolfie View Post
For a VN to be more fuel efficient ?...go with an FI (fuel injection) system instead of the carbs, and update the antiquated ignition system for a guaranrteed good spark at all RPM ranges.

Ive gotten as much as 59 mpg with my 85, stripped and modded properly....
..a larger diam rear tire might raise me to 64 tops.


'89 Vulcan 750 Bought 4/12/18 @ 17805.9 miles $800
Purchased stock. Wrecked once
22490.0+ miles

Completed modifications:
Removed mufflers, straight pipes out of GB
110/90 Front Tire
Pick-up coil re-gapped to .020"
Compufire 55402 r/r series regulator
USB Outlet + Voltmeter
Repainted Metallic Blue w/ new tank bages
Ear Shave (wo/ coasters) 40/140 NO shims 45MPG
MCCT conversion

Planned modifications:
Custom LED turn signals
Windshield
Highway Pegs
(Possible) ignition advance
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post #3 of 21 (permalink) Old 05-20-2019, 09:36 AM
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44 mpg.

Many times I've set out with a full tank to do a gas mileage run, never completed one, it's too much fun playing with the power and revs. So, 44 mpg it is.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #4 of 21 (permalink) Old 05-20-2019, 09:53 AM
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I think it would be tough to improve on the ignition, unless it's getting a voltage drop through the stock wiring. There's a wiring and relay mod to handle that, in the electrical sticky posts.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #5 of 21 (permalink) Old 05-20-2019, 10:35 AM
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Depends on RPM. If I'm doing around 4K or under, as in a nice, lazy back roads ride, I can get mid 50's MPG.

If I'm doing freeway trip riding where the rpms run along the 5K to 6K (or more) then the mpg drops to 32. When I do that I'm generally mildly loaded down (maybe 35 lbs or so). I weigh 240.

A "naked" bike, one without extras such as luggage rack, engine guard, highway pegs, saddlebags, windshield, then whatever you load in your bags and luggage, and with a lighter rider is bound to get a bit better mileage than a bike with all of the "stuff" on it. Even the RAM mount for the GPS is not light. And there's 60 lbs difference between me and Jason alone, not counting whatever riding gear we may be wearing.

I've never once had the sensation that the bike is struggling though. It seems to just zip its' happy ass right down the road without a worry. But it may be a bit thirstier, though.

TOC MCCTs
Saddlebags, hard mounted
Fork mounted tool bag (now hard mounted)
Relocated rear turn signals
LED turn signals, brake lights and running lights
LED license plate frame
Engine Guard and Highway pegs
National Cycles Low Boy Heavy Duty windshield
Home made lowers (nice)
Custom seat (made by a local guy)
Iridium plugs (DPR7EIX-9)
Shenko 230 Tour Master tires at 11,123 miles
Splines lubed at 11,123 miles
Luggage rack
Light bar with LED lights
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post #6 of 21 (permalink) Old 05-20-2019, 11:20 AM
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Actually, now I'm kind of curious about how much all of those things weigh (bags/highway pegs/engine guard/etc.) but they're installed and that's where they'll stay. I'm not THAT curious to take them all off just to weigh them. But it would be nice to know what the grand total would be.

TOC MCCTs
Saddlebags, hard mounted
Fork mounted tool bag (now hard mounted)
Relocated rear turn signals
LED turn signals, brake lights and running lights
LED license plate frame
Engine Guard and Highway pegs
National Cycles Low Boy Heavy Duty windshield
Home made lowers (nice)
Custom seat (made by a local guy)
Iridium plugs (DPR7EIX-9)
Shenko 230 Tour Master tires at 11,123 miles
Splines lubed at 11,123 miles
Luggage rack
Light bar with LED lights
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post #7 of 21 (permalink) Old 05-20-2019, 12:11 PM
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A lot of junkyards and recycle centers have vehicle scales because they’ll weigh you on the way in and again on the way out and charge you based on the difference. The bike’s dry weight is 483lbs. A gallon of gas weighs roughly 6lbs. You could figure out the weight of the add-ons that way.
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post #8 of 21 (permalink) Old 05-20-2019, 12:37 PM
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We've got such a scale just a few miles from the house but it is VERY busy from opening to close so they won't do it. Too bad.

TOC MCCTs
Saddlebags, hard mounted
Fork mounted tool bag (now hard mounted)
Relocated rear turn signals
LED turn signals, brake lights and running lights
LED license plate frame
Engine Guard and Highway pegs
National Cycles Low Boy Heavy Duty windshield
Home made lowers (nice)
Custom seat (made by a local guy)
Iridium plugs (DPR7EIX-9)
Shenko 230 Tour Master tires at 11,123 miles
Splines lubed at 11,123 miles
Luggage rack
Light bar with LED lights
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post #9 of 21 (permalink) Old 05-20-2019, 01:20 PM
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In that case it is what it is. If it was a desperate “need to know” I’m sure the operators here would have a “price”. I don’t have much in the way of add-ons on my mind so the only way I could make the bike lighter is by dieting 😉
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post #10 of 21 (permalink) Old 05-20-2019, 01:55 PM
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I get 44 mpg & bike is LOADED, Vetter fairing, saddlebags with rain gear, luggage rack that has my roll along briefcase, LEDS everywhere and the wires to run them, phone mount, GPS, engine guards, spots, fogs and Bab Boy horn.

MY commute is mainly open roads and highways.
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'99 Vulcan "Victoria"
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