I went out tonight and a friend used a police calibrated radar gun to see how accurate the SpeedoHealer was on the Busa. I have 16/42 gears so we adjusted for them. The final setting on the SpeedoHealer to be accurate at 60 mph turned out to be minus 16% exactly. At this setting it was dead nuts on and only 1 mph off at 100. The top speed recall feature of the SpeedoHealer was useful in this process. We made a lot of runs and he got me going away and coming so we had lots of speeds to compare. He would show the locked in speed on the radar and we would recall the max speed on the SpeedoHealer. When they started to agree we finally called it quits. The 16/42 gears spin the speedo 11.56% more than stock but we had to use 16% to get the speedo correct.
Now I have to see if I can figure out what the correction would be if I went back to stock gears or changed to another combo. I want to say -4.44% for stock since that is the extra correction we added beyond the 11.56% from the gears to get things right on the money. But, everyone has been saying that the Busa speedometers are at least 7% off. Also, mine is definitely linear to 120, which is as fast as I cared to test it where I was doing the testing. My bike only has 700 easy miles on it so the rear tire is mostly news still. A worn rear tire or a different rear tire could make a difference in the speedometer.
My friend also adjusted my headlights so that they work now. I was trying to do it but my hand did not wish to fit past the steering dampner. But, I have some difficulties with my hands, so he offered to help out. Great to be able to see where the bike is going at night now.
And, while we were working on the headlights I left the bike idling and found out that after awhile, the temp guage can go right up to the top and fluids can start to gurgle. So, lesson learned not to let the Busa sit and idle for a long time unless it has a major fan blowing on it.
I had to make a number of speed runs to test the speedometer even though I never speed. But, science required it, and, the 16/42 combo felt real good. I think that I am going to like the gears.
Now I have to see if I can figure out what the correction would be if I went back to stock gears or changed to another combo. I want to say -4.44% for stock since that is the extra correction we added beyond the 11.56% from the gears to get things right on the money. But, everyone has been saying that the Busa speedometers are at least 7% off. Also, mine is definitely linear to 120, which is as fast as I cared to test it where I was doing the testing. My bike only has 700 easy miles on it so the rear tire is mostly news still. A worn rear tire or a different rear tire could make a difference in the speedometer.
My friend also adjusted my headlights so that they work now. I was trying to do it but my hand did not wish to fit past the steering dampner. But, I have some difficulties with my hands, so he offered to help out. Great to be able to see where the bike is going at night now.
And, while we were working on the headlights I left the bike idling and found out that after awhile, the temp guage can go right up to the top and fluids can start to gurgle. So, lesson learned not to let the Busa sit and idle for a long time unless it has a major fan blowing on it.
I had to make a number of speed runs to test the speedometer even though I never speed. But, science required it, and, the 16/42 combo felt real good. I think that I am going to like the gears.
