|
The marks are for initial installation only.
Even assuming everything is done correctly, they won't line up again for an unbelievable number of revs, due to a combination of sprocket teeth and the number of teeth between each of the 3 marks.
Someone calculated it with an explanation here once, but I don't recall the specifics.
P.S. Off topic but I used to know a stickbuilder named Hale Wallace. Was he before your time? He did a couple scale models of the Steen Skybolt, then went on to the real deal and eventually owned the company. Built Knight Twisters too, I think.
He died of cancer at the top of his game -- late '90s I think.
|