Thanks Texhood.
Jeff K, they are both 1800 wings. Just trying to see if there is any difference in the gear ratio between 03 and 06 wings.
Thanks
Tim
Usually you count the ring gear teeth and divide by the Pinion teeth so for example I had a 4:56 rear end in a Hotrod of mine 9/41
Another way though not as accurate
Make a Chalk Line on the Tire
Get access to the drive Shaft ( visually not removed)
and turn the wheel and count rotations pretty much same math as above if memory serves me.
if nothing else you may not know the gear ratio in my second suggestion but you can see how far off if any, should clue you in on if one is different, between the two Bikes ( i'm assuming you are going to have two GL1800's next to you of diff years) .
I have a 2006 GL1800 but never knew there was a diff in gear ratios
if I had a Higher gear then my buddies '03 I would think I would get better milage then him
and he usually gets better then me , but as of late my Bike is getting broke in more and we near tie.