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Gas Mileage and Riding style

Started by gsatterw, April 29, 2012, 05:08:41 PM

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gsatterw

Hey there everyone, I've been noticing that my gas mileage is really low and was wondering just how much of a contribution my riding style has towards fuel economy. I usually push my bike pretty hard: fast launches and usually use most of my gears to near red line when accelerating and cruise at about 6/7k. My trips are pretty short usually so I use the choke a good deal (some trips I don't take the choke off) but never more than half way. I'm getting something like 25-30 mpg or so. I rejetted 22.5 65 and 145, lunchbox, v&h exhaust and am running 14t/41t.

I also have a strange problem relating to the amount of fuel in the tank and how well the bike runs. Full-half tank: runs beautifully. 1/4 tank-end of main: a bit rough, seems to be getting less fuel than when tank is full. Reserve: ok, so when I flip to reserve, the bike will idle but will die if the throttle is blipped.

Thoughts? Opinions?
2002 GS500
Progressive Springs|15w oil|Heavy Duty Fork Brace|R6 Rear Shock|Cbr900rr Rear Sets|Reverse Shifting|'89 Factory Clipons|R6 Throttle Tube|K&N Lunchbox|V&H Exhaust|Jets: 22.5/65/147.5|3 turns|Shorai Li/Fe Battery|Iridium Plugs|Blue SS brake line|Blue Levers|Blue Chain

craigs449

That MPG just plain sucks for this bike.  I am trying to better my current 42-45 mpg's! I would check both petcock's and be sure fuel is flowing freely as it's referenced to your lack of fuel flow with less than 1/2 tank. I had added inline fuel filters to mine and found that was restricting fuel flow when throttling hard to get on the freeway.....I ditched them and all is well now. :thumb:
2001 Suzuki GS 500 "Commute Killer"
2008 Husqvarna 510 SMR
2002 Honda CR 250 "Project Pain-in-the-ass"
2001 Honda XR 50

Bluesmudge

#2
How many miles on the bike and how many miles since the last valve clearance check?

Other than that, it seems you have done everything possible to lower the fuel economy of the bike. However, I would expect you to still get 35+ mpg, so something is wrong. Perhaps one of your brakes are rubbing?

I get 49 mpg with some spirited riding and a 15t front sprocket. Lowest I ever got was 35 mpg but that was at 90 mph for at least 50 miles. I have done as well as 58 mpg with the stock gearing.

Suzuki Stevo

+1 on the pilots and the mains, +1 on the CSS (17T) the rest of the bike is Stock, my best tank was 69.8 Mpg (ideal conditions) without riding like an AzzClown, just commuting  :thumb:
I Ride: at a speed that allows me to ride again tomorrow AN400K7, 2016 TW200, Boulevard M50, 2018 Indian Scout, 2018 Indian Chieftain Classic

craigs449

Also adjust tire pressure.  I run 31 front / 37ish rear.   I always ran 25 in both until I read on here that the stock tires are supposed to be 31 front / 31-41 rear.
2001 Suzuki GS 500 "Commute Killer"
2008 Husqvarna 510 SMR
2002 Honda CR 250 "Project Pain-in-the-ass"
2001 Honda XR 50

gsatterw

bike only has 10k miles on it, it was in a pretty nasty wreck a year ago however...could this mess up valves?
2002 GS500
Progressive Springs|15w oil|Heavy Duty Fork Brace|R6 Rear Shock|Cbr900rr Rear Sets|Reverse Shifting|'89 Factory Clipons|R6 Throttle Tube|K&N Lunchbox|V&H Exhaust|Jets: 22.5/65/147.5|3 turns|Shorai Li/Fe Battery|Iridium Plugs|Blue SS brake line|Blue Levers|Blue Chain

craigs449

Quote from: gsatterw on April 29, 2012, 06:50:54 PM
bike only has 10k miles on it, it was in a pretty nasty wreck a year ago however...could this mess up valves?

I don't see how................
2001 Suzuki GS 500 "Commute Killer"
2008 Husqvarna 510 SMR
2002 Honda CR 250 "Project Pain-in-the-ass"
2001 Honda XR 50

gsatterw

valve clearances maybe....the bike was sort of bouncing down the road for a few hundred feet...
2002 GS500
Progressive Springs|15w oil|Heavy Duty Fork Brace|R6 Rear Shock|Cbr900rr Rear Sets|Reverse Shifting|'89 Factory Clipons|R6 Throttle Tube|K&N Lunchbox|V&H Exhaust|Jets: 22.5/65/147.5|3 turns|Shorai Li/Fe Battery|Iridium Plugs|Blue SS brake line|Blue Levers|Blue Chain

Funderb

if i am racing, you know, the fun kind between friends on closed roads, i get about 38. and that was jetted over-rich cruising at 70 on the highway in 6th, about 60.
Black '98 gs500 k&n Lbox, akrapovic slip-on, kat600 shock, progressive sproings, superbike handlebars, 40/147.5/3.5washers

"I'd rather ride then spend all my time fiddling trying to make it run perfectly." -Bombsquad

"Never let the destination cast a shadow over your journey towards it- live life"

Suzuki Stevo

Quote from: gsatterw on April 29, 2012, 05:08:41 PMI usually push my bike pretty hard: fast launches and usually use most of my gears to near red line when accelerating
This is probably a large part of it, even if your bike is 100%  :dunno_black:
I Ride: at a speed that allows me to ride again tomorrow AN400K7, 2016 TW200, Boulevard M50, 2018 Indian Scout, 2018 Indian Chieftain Classic

twocool

Quote from: gsatterw on April 29, 2012, 05:08:41 PM
Hey there everyone, I've been noticing that my gas mileage is really low and was wondering just how much of a contribution my riding style has towards fuel economy. I usually push my bike pretty hard: fast launches and usually use most of my gears to near red line when accelerating and cruise at about 6/7k. My trips are pretty short usually so I use the choke a good deal (some trips I don't take the choke off) but never more than half way. I'm getting something like 25-30 mpg or so. I rejetted 22.5 65 and 145, lunchbox, v&h exhaust and am running 14t/41t.

I also have a strange problem relating to the amount of fuel in the tank and how well the bike runs. Full-half tank: runs beautifully. 1/4 tank-end of main: a bit rough, seems to be getting less fuel than when tank is full. Reserve: ok, so when I flip to reserve, the bike will idle but will die if the throttle is blipped.

Thoughts? Opinions?

riding style = fuel economy (#1 factor) = bad mileage
I usually push my bike pretty hard= bad mileage
fast launches=bad mileage
most of my gears to near red line=bad mileage
cruise at about 6/7k=bad mileage
My trips are pretty short=bad mileage
use the choke a good deal=bad mileage
(some trips I don't take the choke off)=bad mileage
I rejetted=bad mileage
lunchbox=bad mileage
v&h exhaust=bad mileage
am running 14t/41t=bad mileage

You have done everything in the book possible to ruin the mileage......

What were you expecting to happen??

Cookie

jestercinti

Quote from: craigs449 on April 29, 2012, 06:34:14 PM
Also adjust tire pressure.  I run 31 front / 37ish rear.   I always ran 25 in both until I read on here that the stock tires are supposed to be 31 front / 31-41 rear.

+1.  You'd be surprised how much the tires release air over the winter.
Bikeless and Broke at the moment...

gsatterw

Quote from: twocool on April 30, 2012, 04:16:05 AM

riding style = fuel economy (#1 factor) = bad mileage
I usually push my bike pretty hard= bad mileage
fast launches=bad mileage
most of my gears to near red line=bad mileage
cruise at about 6/7k=bad mileage
My trips are pretty short=bad mileage
use the choke a good deal=bad mileage
(some trips I don't take the choke off)=bad mileage
I rejetted=bad mileage
lunchbox=bad mileage
v&h exhaust=bad mileage
am running 14t/41t=bad mileage

You have done everything in the book possible to ruin the mileage......

What were you expecting to happen??

Cookie

Ok. Cool. Just making sure nothing was horribly wrong with the bike. I'd gladly trade fuel economy for the ridiculous amount of fun it is to ride this bike!

Graham
2002 GS500
Progressive Springs|15w oil|Heavy Duty Fork Brace|R6 Rear Shock|Cbr900rr Rear Sets|Reverse Shifting|'89 Factory Clipons|R6 Throttle Tube|K&N Lunchbox|V&H Exhaust|Jets: 22.5/65/147.5|3 turns|Shorai Li/Fe Battery|Iridium Plugs|Blue SS brake line|Blue Levers|Blue Chain

Toogoofy317

I just got 41 on Flick. 'Ole guy has always been a thirsty critter. But, just before I burnt a valve my gas mileage tanked to about what you were talking. But, I also don't run him that hard no need to  :dunno_black:  Seems like a quick way to kill a bike if you ask me. Also, aren't you supposed to adjust valves every 4,000 miles? I can't remember.


Mary
2004 F, Fenderectomy, barends, gsxr-pegs, pro grip gel covers, 15th JT sprocket, stock decals gone,custom chain guard,GSXR integrated mirrors, flush mount signals, 150 rear tire,white rims, rebuilt top end, V&H Exhaust, Custom heel and chain guard (Adidasguy)

jestercinti

Used to get 210 miles on a tank before reserve kicked in.  I now get about 180.  Rejetting, lunchbox, and 80 indicated in the highway does that.  I also jackrabbit start.
Bikeless and Broke at the moment...

redge

All stock, upshift at 6rpm. After 200miles, filling to the top shows 4 gallons

ohgood

you could ride sanely, jab a hole in the gas tank and still get better milage. wow.


tt_four: "and believe me, BMW motorcycles are 50% metal, rubber and plastic, and 50% useless

Phil B

Quote from: Toogoofy317 on May 02, 2012, 07:03:23 AM
I just got 41 on Flick. 'Ole guy has always been a thirsty critter.

Owch. there's thirsty, and there's gluttonous :(
I get 56 regularly. only mod that I'm aware of is a K&N replacement air filter.

I do a lot of freeway riding and long 40mph blvd riding though

mister

Stock air pressure for tires is 33 front and 36 rear.

Michael
GS Picture Game - Lists of Completed Challenges & Current Challenge http://tinyurl.com/GS500PictureGame and http://tinyurl.com/GS500PictureGameList2

GS500 Round Aust Relay http://tinyurl.com/GS500RoundAustRelay

craigs449

Quote from: mister on May 02, 2012, 12:35:37 PM
Stock air pressure for tires is 33 front and 36 rear.

Michael


i am hoping to improve from my usual 42-46mpgs since bumping tire pressure up to 31/35 from 25 psi front and rear.  all stock, mostly highway commuting.
2001 Suzuki GS 500 "Commute Killer"
2008 Husqvarna 510 SMR
2002 Honda CR 250 "Project Pain-in-the-ass"
2001 Honda XR 50

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