Cortez
Junior Member
The theory that I know and which should be true, is that the speed on the
bike is "read" from the front sprocket, and changes to the sprocket should
affect speedo accuracy.
Changes to the sprocket SHOULD NOT result in changes to indicated
speed vs revs on the bike, right? If I had 62mph at 5000 revs, I should
have 62mph at 5000 revs with -1 or +1 at the front too, right?!
This WAS TRUE on my Kawasaki 650R (ER6F) when I went +1 on the front.
Indicated speeds remained the same, GPS indicated speeds went up, making
the speedo more accurate.
The speedo on the FZ6 is said to be around 7% off, which I confirmed
(somewhat) with radar traps around town, at speeds from 40 to 60mph.
I've read here (and on other forums) that going +1 at the front should
make the speedo accurate to about 1%.
So what really happened?
Today I got my +1, put it on, went for a ride and tried 2 android apps
(which locked on to 8-9 satellites, which should be enough) and I still
had a 5-6% indicated error in comparison to the bike's speedo. Ok, maybe
it's the phone.. I should try the radar traps.
..BUT
I got different indicated revs vs speeds now, and this, from what I've
come to understand over time and with experience on the last bike,
should not have happened, right?
My 62mph (100km/h) went down from 5000 revs dead on to 4600, more
or less.
WTF is going on here?
Why is there a change in revs vs speed on this bike, and there wasn't
one on the 650R? AND, is it possible that my speedo is still indicating
5-7% off?!
Thanks everyone.
bike is "read" from the front sprocket, and changes to the sprocket should
affect speedo accuracy.
Changes to the sprocket SHOULD NOT result in changes to indicated
speed vs revs on the bike, right? If I had 62mph at 5000 revs, I should
have 62mph at 5000 revs with -1 or +1 at the front too, right?!
This WAS TRUE on my Kawasaki 650R (ER6F) when I went +1 on the front.
Indicated speeds remained the same, GPS indicated speeds went up, making
the speedo more accurate.
The speedo on the FZ6 is said to be around 7% off, which I confirmed
(somewhat) with radar traps around town, at speeds from 40 to 60mph.
I've read here (and on other forums) that going +1 at the front should
make the speedo accurate to about 1%.
So what really happened?
Today I got my +1, put it on, went for a ride and tried 2 android apps
(which locked on to 8-9 satellites, which should be enough) and I still
had a 5-6% indicated error in comparison to the bike's speedo. Ok, maybe
it's the phone.. I should try the radar traps.
..BUT
I got different indicated revs vs speeds now, and this, from what I've
come to understand over time and with experience on the last bike,
should not have happened, right?
My 62mph (100km/h) went down from 5000 revs dead on to 4600, more
or less.
WTF is going on here?
Why is there a change in revs vs speed on this bike, and there wasn't
one on the 650R? AND, is it possible that my speedo is still indicating
5-7% off?!
Thanks everyone.