PP AH-58 almost made it to the finish line

[Jim Donovan]

Very nice Terry, Power Products AH 58 and 61's are one of my favorites.

Thanks, I enjoy the heck out of resurrecting those old saws. Especially when they actually function. Finding the 1/2 pitch chain is not happening anymore. I find out so many people tossed out saw parts when building up kart engines. I am down to machining rivets and piecing shorts together. Not very successful with the sections stretched differently.

I have the chain and the sprockets in the 1/2" pitch.  #420 and and #41 are the same chain but #420 is pre-stretched.  #40 is heavier and has a roller that is .312 diameter versus .306 on the #41 chain.  The 1/2" pitch you want to stay away from is .428 because the roller is .333 and it will not go into the valley of either a #41 sprocket or a #40 sprocket.