Last year on my 82 750 I changed the rear sprocket from 43 to 40 teeth. I stayed the stock number on the front. I also changed the chain. but it went from 6000 rpm to 5100 rpm at 70 mph. giving me about 8 more mpg. Mack
--- On Thu, 7/21/11, Mike21222 <[email protected]> wrote: From: Mike21222 <[email protected]> Subject: [Nighthawk Lovers] Gearing up a 84 Nighthawk 650 for better mileage To: "Nighthawk Motorcycle Lovers!" <[email protected]> Date: Thursday, July 21, 2011, 12:22 AM Hello I have a question. I was just wondering if anyone has any idea if going with a larger tire size in rear would give me better gas mileage. I have a unique commute where 17 of my 18 miles is Interstate 81 (67-77 mph), and I have a total of 2 stop signs each way. If I could drop my RPM's by say 3-5 hundred, I'm guessing I might squeeze another 3-5 mpg out of it. Forgive my fuzzy math. Any suggestions? I just got mine, so I can't even say what my mileage is yet, I'm still getting used to it. I'm thinking I should be getting the typical 40-50... Oh, BTW, in case you aren't aware this model is shaft drive, so conventional gearing ratio changes are out. Thanks Mike21222 Fincastle, VA -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
