Noob question about optimum RPM range, mileage

[jackacid]

I just got a '85 Nighthawk 650, been riding it every day for about 3 weeks. I've been tracking my mileage and I'm probably getting around 41 MPG, mostly town miles but a couple long rides.

Anyone know what is the ideal RPM range is (that the engine prefers)? Also wondering if that is also the target range for optimum mileage?

I usually run it between 3200-4000 before shifting. It SOUNDS right, and I still have acceleration power if I throttle it.

Is this right, or should I be running her in a higher range?

[Johnj]

LOL No your running just about right...sounds good.

[totalmotorcycle]

Ryan, don't forget we have a full, 76 year MPG handbook you can check with for motorcycle MPG as well: http://www.totalmotorcycle.com/Motorcyc ... yGuide.htm

[jackacid]

Ok thanks guys. Just don't have the experience running bike engines and wasn't sure if they liked to run higher. With cars I've always tried to keep them in the 2500 range.

Will check the guide too, thanks!

[totalmotorcycle]

Hey, you are most welcome! We have the friendlist and most helpful members here I've ever seen.

With bike engines, I found (for the best MPG) to keep them under 5,500 RPM but high enough they are not "lugging" in any gear and you still have enough throttle to get yourself out of trouble. (5,500 RPM is where the hp and torque curve generally meet).

Mike

[agraebner]

You seem to have it pretty well in hand I would say..... Every model bike is different. Any change in tuning or gearing will effect it too. + 1 don't lug it I'm sure you can FEEL when its running to slowly for the load on it. Do not be afraid to use higher RPM when needed that what it was made for. I have had the argument before with squid that you have to be in high revs and its just not needed. My fzr will comfortably run through town at 2k rpm and if you keep the revs only as high as needed I get pretty good fuel economy as well. My Nighthawk 750 gets an average of 54 mpg and that is shifting at 4 k rpm and its faster than you need for normal riding. My magna seems to like shifting around 6k for its smoothest power and shift points.