hey guys...i have a 2008 ninja 250... help with questions

Darkshadow4ya · November 28th, 2010, 07:28 PM

it has a -3t rear sprocket and +1t front sprocket on there. it has a gsxr exhaust. this is how it came when i bought it. anyway ...i put in 2 gallons the other day and i just put 2.5 gallons in today.. its not leaking or anything. when im riding..the gauge drops down like i used alot of gas already. why is it burning so much gas so quickly?? me and my wife have been practicing around our neighborhood at most. a lot of start and stopping. also with sprocket change does that affect your actual speed limit?? the tires are still stock just the sprocket change i mentioned has been done. any advise will be greatly appreciated!!

KURT · November 28th, 2010, 07:37 PM

You'll want to get your actual miles per gallon (or liters), for this discussion.

55 to 65 would probably be average, with out flogging the engine too hard. Anything more than that, would be doing really well.

Sprocket changes will effect mileage some, but have less effect on top speed, which is a result of the horsepower the engine produces.

Darkshadow4ya · November 28th, 2010, 07:46 PM

Quote:

Originally Posted by KURT

You'll want to get your actual miles per gallon (or liters), for this discussion.

55 to 65 would probably be average, with out flogging the engine too hard. Anything more than that, would be doing really well.

Sprocket changes will effect mileage some, but have less effect on top speed, which is a result of the horsepower the engine produces.

ty i wrote down my mileage on a full tank..gonna try and gauge it.

Cuongism · November 28th, 2010, 08:24 PM

The gauge is also notorious for being useless. My ninjette never shows full even when filling the whole tank upright to the brim. 3/4's is the highest it'll go. That sprocket change actually should help your mpg a little.

indr · November 28th, 2010, 11:19 PM

To get the ACTUAL MPG for what it would be for an average ride, pick up one of those cheap 1lt fuel bottles: http://www.sierratradingpost.com/p/,...-Aluminum.html

fill up both the bottle and your gas tank. reset your oddometer. drive around as you would. streets, roads, highways, etc till you run out of gas. check your oddo. fill up using your fuel bottle and make it to the nearest gas station.

Alex · November 28th, 2010, 11:32 PM

That method would in fact let you know how much usable fuel is in a full tank, but it isn't necessary to go to that extent just to find out actual mpg. Just fill tank to standard level, reset odometer, and the next time you fill up your tank fill it to the same exact level; divide number of miles on trip odometer by amount of fuel to fill it back up, and voila.

More info in this thread about the mileage people are getting on their own machines.

Robbo81 · November 29th, 2010, 03:16 AM

When I first got my bike license I was chewing through the fuel. I'd say it was because of the way I was riding, stop start, high revs, etc. A sprocket change shouldn't change your speedo because the speed sensor picks up off the front wheel.

JMcDonald · November 29th, 2010, 07:35 AM

My first two tanks were about 54mpg because I was going very easy on it. A few tanks later and I was consistently down to 45mpg every time.

And yes, my gearing will not effect the speedo / odo.

November 28th, 2010, 07:28 PM	#1
Darkshadow4ya Dusty Name: dan Location: sacramento Join Date: Oct 2010 Motorcycle(s): 2008 green ninja 250 Posts: 50	hey guys...i have a 2008 ninja 250... help with questions it has a -3t rear sprocket and +1t front sprocket on there. it has a gsxr exhaust. this is how it came when i bought it. anyway ...i put in 2 gallons the other day and i just put 2.5 gallons in today.. its not leaking or anything. when im riding..the gauge drops down like i used alot of gas already. why is it burning so much gas so quickly?? me and my wife have been practicing around our neighborhood at most. a lot of start and stopping. also with sprocket change does that affect your actual speed limit?? the tires are still stock just the sprocket change i mentioned has been done. any advise will be greatly appreciated!!

November 28th, 2010, 11:32 PM	#6
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	That method would in fact let you know how much usable fuel is in a full tank, but it isn't necessary to go to that extent just to find out actual mpg. Just fill tank to standard level, reset odometer, and the next time you fill up your tank fill it to the same exact level; divide number of miles on trip odometer by amount of fuel to fill it back up, and voila. More info in this thread about the mileage people are getting on their own machines. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)

November 29th, 2010, 07:35 AM	#8
JMcDonald ninjette.org sage Name: J Location: Oklahoma Join Date: Sep 2010 Motorcycle(s): 2008 250R Posts: 771	My first two tanks were about 54mpg because I was going very easy on it. A few tanks later and I was consistently down to 45mpg every time. And yes, my gearing will not effect the speedo / odo. __________________________________________________ Factory Pro Jet Kit, K&N R-0990 Pod Filter, Sportisi VR Black Exhaust, BRT TIS Ignition, White Paint, and 16/41 Sprockets. Soon: Maybe a 37T Rear Sprocket if I get things running like I'd hoped.

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November 28th, 2010, 07:37 PM	#2
KURT Resident Old Guy Name: Kurt Location: Goodyear, Az Join Date: Jul 2010 Motorcycle(s): sold Posts: 264	You'll want to get your actual miles per gallon (or liters), for this discussion. 55 to 65 would probably be average, with out flogging the engine too hard. Anything more than that, would be doing really well. Sprocket changes will effect mileage some, but have less effect on top speed, which is a result of the horsepower the engine produces.

November 28th, 2010, 08:24 PM	#4
Cuongism ninjette.org certified postwhore Name: Cuong Location: San Diego Join Date: Jul 2010 Motorcycle(s): 2008 Ninja 250r, 2007 Daytona 675 Posts: A lot.	The gauge is also notorious for being useless. My ninjette never shows full even when filling the whole tank upright to the brim. 3/4's is the highest it'll go. That sprocket change actually should help your mpg a little.

November 28th, 2010, 11:19 PM	#5
indr ninjette.org guru Name: . Location: . Join Date: Nov 2010 Motorcycle(s): . Posts: 331	To get the ACTUAL MPG for what it would be for an average ride, pick up one of those cheap 1lt fuel bottles: http://www.sierratradingpost.com/p/,...-Aluminum.html fill up both the bottle and your gas tank. reset your oddometer. drive around as you would. streets, roads, highways, etc till you run out of gas. check your oddo. fill up using your fuel bottle and make it to the nearest gas station.

November 29th, 2010, 03:16 AM	#7
Robbo81 ninjette.org member Name: Robert Location: sydney Join Date: Sep 2009 Motorcycle(s): 250r Posts: 35	When I first got my bike license I was chewing through the fuel. I'd say it was because of the way I was riding, stop start, high revs, etc. A sprocket change shouldn't change your speedo because the speed sensor picks up off the front wheel.