Now that I have mine running and am riding it I am sure that speedo is not at all accurate. Had a couple pals follow me to the next town, my '78 P125x speedometer seemed to think that 55 was the max speed it was moving, guys following me, 1 on a Ninja, the other on a 250 Honda Rebel said they were running 65 or faster to keep up with me.
I did a bit of lubricating with something for chains and cables and haven't had a change to take the scooter out on the road and see what sort of speeds it will register/clock.
I'm ok with it not being accurate but I don't want to try and explain to my adult sons why their Mom needs bailed out of jail some day for trying to fly that little ride with no pilot's license.
Any suggestions on what I might want to try and do to improve the accuracy or at least the working of that speedo?