Hey i was just wondering about my fuel economy,

I get about 42.6 MPG without using the reserve tank, 16L gives me 150~ miles

I heard that some people can knock out 50+ MPG? How??

My bike is stock with the exception of a K+N drop in filter, blue tyre valve caps, blue screen bolts and a brighter headlight bulb 

I just calculated my last tank at 50.3mpg.  I'm not particularly gentle with the throttle.

Mine has larger pilot and main jets (#20 & #130).  Stock fuel/exhaust system, otherwise.  I think it runs lean.

Fuel additives like ethanol (and other alcohol products?) will reduce your mileage.

I'm getting roughly 46-50mpg.  Running V&H full system, 15t sprocket, 147.5 main jet, K&N lunchbox.  Mostly running on the highway though.  Not overly aggressive riding. 

you do know that the 60mpg suzuki claims is for highway right? I get about 45mpg in town and get about 62mpg on the highway.

I think it's your tyre valve caps.

Are your brakes dragging at all?  Your chain in good shape?  Are you converting liters to gallons correctly? Yeah something is wrong. If you use non-imperial which is what mpg is typically referenced in you get something like 36 mpg. If you convert to imperial gallons you get 42.6, so you're actually getting worse mileage than you thought.

Are you firing on both cylinders?

Recently I get 30-35 MPG  
Bike is rejetted and has custom pipe, 15T front, and lunchbox, but it's not the reason for low mileage.

Reason is here: I do not remember my last time on a highway  

So it's not so bad after all. 30MPG in New York City (stop-n-go traffic, mostly STOP, little go) is totally OK with me  

At least one horrible mileage problem turned out to be valves in desperate need of adjustment, a couple years back. Not mine, just remembering a post. Pachman's listed a bunch of other stuff to look for - do both pipes get hot, do both plugs look good (one cylinder issues.) Go out for a 10-15 minute ride where you don't need to use the brakes much, coast to a stop (using little to no brake) at the side of the road where there's little traffic, feel the brakes - are they hot?

50 miles per US gallon (13 US miles/liter) is generally quite attainable without any special care. Riding style and sprocket setup impact getting up into the 60's (15+ mi/l). Anything under 40 (10.5 miles/liter) smells like a problem to me. People with 14 tooth front sprockets that ride inefficiently as all heck are getting 45 mpg (12 mi/l) or better. You're running 9.4 miles/liter - something is not right.

I am getting 61 MPG. I have checked it 3 times in the last 800 miles. 30% around town 70% highway. All stock jetting. 2006 model. This bike is Koooool

I get a little over 50 with my wife and I riding. Around town with just me 53-55. Haulin it on the highway (80 plus MPH) 50 or so and taking it easy 60 or so. The best is riding in the keys by myself I have got the best, twice I've got 67 keeping the speed under 60 averaging about 42.

I get avarage 52mpg with 40% city, 45% freeway, 15% full throttle. I have V&H full exhaust, K&N lunchbox, 20-62.5-152.5 jets +1 washer 3.75 turns on idle-mix-screw, +6* timing, 15t sprocket, and good valve clearance.

Quote from: kml.krk on April 14, 2010, 04:53:24 PM
Recently I get 30-35 MPG  
Bike is rejetted and has custom pipe, 15T front, and lunchbox, but it's not the reason for low mileage.

Reason is here: I do not remember my last time on a highway  

Glad it's not just me. . .
My "F" bike with a taller windscreen & saddle bags gets about 37 MPG on regular gasoline, (mixed driving in NY/NJ Metro area).
-Ej-

I know I get about 49-52 mpg with going 60% freeway and 40% back roads. I have a K&N lunchbox and v&h full exhaust and rejetted to 40 pilot 150 mains, my bike is a 2000. I still think i could get better if everything was perfectly adjusted, which i'm currently working on.

I replaced chain and sprockets, I forgot to mention I have a scottoiler fitted (because I'm lazy) so the chain is always lubed up ^^

I do roughly 30-40 miles from home to college/work and back again and its pretty much all motorway/A roads

Brakes are fine, no rubbing.

Would riding style affect MPG? I mean obviously thrashing it everywhere will raise consumption; I tend to use the gearbox to slowdown rather than brake all the time. I'll come off the motorway at say 70-90mph and drop down to 35-40mph before using my brakes (traffic permitting) so slowing from 6500rpm to 4-3000rpm, shifting down while bringing the revs up a little...

Im weighing in around 15 stone/210 pounds and 6' 2''


~EDIT~

Im using this site to convert everything because Im always online late in the evening and have no head for numbers at night.... numbers are a daytime thing

http://www.torquecars.com/tools/uk-mpg-calculator.php

Engine braking could bring your fuel economy down, I think. Riding style does affect fuel economy. If you always shift below 3500 or 4500 using around half throttle or so to accelerate and don't engine brake, you'll have a lot higher fuel economy than if you're shifting at higher RPMs and always using wide open throttle and not using the most efficient gears for the speed.

Interesting that mdduhon mentioned the jetting and how it affects fuel economy. It has been suggested that my mileage stinks because my jetting is too rich.
Pilot    22.5
Mid    65
Main 140
NO washers
2.5 turns out

It feels rich, (voices in head)
It smells rich, (at idle, when I get a whiff)
It never needs more than 1/3 choke, (even cold mornings)
Occasional slight backfire from the exhaust when getting off the throttle between gear shifts,
37 MPG in mixed driving.

Is lean jetting critical to good MPG"s?
Just wondering,
-Ej-

Quote from: Electrojake on April 24, 2010, 08:09:31 AMIs lean jetting critical to good MPG"s?
Just wondering,
-Ej-

I just had my GSX650F Dyno'd and the veteran tuner told me... "when you have the correct Air/Fuel mixture your out of the throttle more so the HP and mileage go hand and hand"

CCPDYMMV
Stevo

According to Fuely, I'm getting close to 58mpg. Was 57.7 but last two tank ups after the 18,000 service have seen an improvement in economy.

I ride sedately. Smoothly, slowly roll on the throttle. Don't go WOT at all. Maybe a couple of times I've done it. But even overtaking B-Double trucks I've never felt the need to twist the throttle all the way to its stop point.

Normal riding gear changes are around 5,500rpm - give or take 500. With most riding in the 4000 to 5,500 range.

Depending on which way I go to work I can either encounter zero traffic signals or go through a half dozen. 90% of my morning commute is in 5th & 6th gear. In the afternoon most of my time is spent in 2nd & 3rd 60% with the rest being 4th 5th and 6th - due to traffic congestion on the highway caused by people who don't know how to merge properly.

Weekend rides we avoid the city. Last ride - 500+kms - we rode through four sets of traffic signals. There were two sets at the shopping center were we started and finished (rode through them twice). So we managed the entire ride without encountering a single set of Lights - red, green or amber. Point... I very rarely ride through traffic lights. I do. I just doesn't make up a large part of my riding.

Bike is entirely stock.

Michael

Quote from: Eklipse on April 23, 2010, 05:12:58 PM
Engine braking could bring your fuel economy down, I think. .

This doesn't work on our bikes because they're carbureted. On say a car with FI, when you engine break, the ecu understands what's happening and cuts fuel, the only thing keeping the engine moving is compression. On out bikes it still uses the amount of fuel for the amount of air coming in. Doesn't make a bit of difference.

Quote from: mister on April 24, 2010, 01:06:26 PM

I ride sedately. Smoothly, slowly roll on the throttle. Don't go WOT at all. Maybe a couple of times I've done it. But even overtaking B-Double trucks I've never felt

What does WOT mean?


I calculated my MPG using my main tank i.e. not including reserve. I get roughly 150 Miles before I hit reserve which i think is 16 or 18L right?

Quote from: Lifeforce99 on April 25, 2010, 10:50:23 AM
What does WOT mean?

Wide Open Throttle