over drive system

[maximum od]

Pat
yes thats its the site. actually your in santa cruz,im very close,im in Aromas.but to answer your question,the first one i used a splined coupler
that i had made,but now im using a coupler with a 1 inch blind hole 1/4 keyway
and a 3/8 cross drilled hole and a hardened dowel pin.I will have to find the pictures.