Welcome Hornetspit! Yer def not the only old-timer round these parts... but I can't say anymore or they'll gang up on me o.O
I don't have one on my bike yet, but I've had this before and loved it : Tiny-Tach: Gasoline Tachometers
If ya want analog style and/or more to choose from there's this thread: http://motorbicycling.com/f13/egt-ch...ion-11620.html
If ya wanna save a penny I've heard tell there's digital ones for tractors etc. for $20 or less, but I don't have a link handy...
Would love to see yer bike BTW