ATM tangent arm drive

[Ina Ron Lippard Renaissance Reproductions <renrepro@surfglobal.net>]

   Saw this thread and it sparked a memory. Back in 1963 my dad helped me 
make my first 6" newt for a science project.Part of the design was a manual 
tangent arm-drive.The screw mechanism was off (believe it or not) an old 
Piesecki,(sp) helicopter. Part of a crank for doing air-sea rescue work. We 
made a wood clamp w/split hole and bolt bushing arrangement.This clamped on 
to the polar shaft housing,(an old jacobson edger frame)A second arm held 
the screw assy and drove the polar shaft,(I think) It was a long time ago. 
But the thing worked great. Good enough to shoot some nice photos of the 
moon and planets.The project got me to the Florida State Science Fair.And 
met this really cute girl who was a teen model in Tampa...whoops! Keep it 
G-rated Ron!Let me ask the old man how we did it.It really worked well 
enough to do some astro-photography. Still plan to do this with my Cave 8".
regards, Ron