Ok, I did a little search and got enough information to generate more questions.

I ran a tank of gas through my F2 and the odometer read 374 mi. when I filled it. It came out to 93.7 mpg!! I put 4 gallons in it.

Uh, I know they do good but not that good. So obviously the odo is off. Everything, speedo/odo comes off the drive on the front wheel right? Any sprocket changes that may have been made wouldn't change anything right? Or is it based on the revolutions of the output shaft?

 

Is the speedometer reading incorrectly by a bunch?

 

Seems to be.

 

It would say youre doing 80 when your doing 45.

I doubt the gear in wheel has as issue. I'm thinking it's gotta be something inside the speedometer.

 

I'm sorry, I answered your question wrong. It does seem pretty close. I'm not passing more cars than usual or slowing anyone down or anything.

I'm going to see if there's a difference between the regular odo and the trip meter. It's the trip meter that was wrong. I assume both are tied together though so I'm guessing I'm going to see the same thing in each.

And yes, it seems it would be inside the speedo or the incorrect speedo. You know if there are any issues with swapping in an earlier or later speedo? Perhaps the F3 speedos are different? I dunno.

 

You could gps your next trip and see what your gps ie phone says your traveled vs your crappy mechanical odo

 

Yeah, that's the plan. I'm going to attach my GPS to the bike and see if there's a difference.

 

Ok, I took my cell phone and taped it on the tank with a speedo app. going. My speedo is about 2 or 3 mph off. It's really hard to tell with these speedos, they're small, they only have 5 mph graduations and they vibrate like all Hell. It shows faster than actual. The odo seems correct too. According to my odo I'm getting 41.8 mpg. I'm not really concerned about that but I find it interesting that my 103 ci Harley Fat Bob gets a little over 43 mph.! Lol! But if you think about it, with the speedo showing fast you would rack up more than actual miles too so my mpg should actually be a little better. So it was a false alarm.

 

Probably because you run the **** out of the Cbr and not the Harley

 

Actually I flog them both. It may be the reason I have few problems with my Harley. I actually ride it, unlike so many other Harley riders. But yeah, the CBR spends little time at half throttle or less.

PS: This is the most fun I've had on a bike in many years! I better put some Stabil in that Harley.