The Ford Barn - View Single Post - Shift lever and fork size

Joe K · 03-19-2019, 07:49 AM

Hard way to fix it. Would have been easier (cheaper?) to build up the ball to beyond the groove wear on the forks, make it round, and then mill out the forks to fit the ball.

I think it will work but will be "sloppy." You have up to 0.010 slop whereas the original fit was more like 0.003 - which is consistent in machining circles as a "sliding" fit.

I would give it a try. If that doesn't work bring only the ball back and have them build that up leaving the forks the size they are.

The problem for the machinist is in making the ball "consistent" at different angular approaches: the forks stay planer, the ball approaches the forks at differing angles. If the machining is not "round" then the ball jams in the slot at the end of the travel.

Joe K

03-19-2019, 07:49 AM	#4
Joe K Senior Member Join Date: Jul 2010 Location: Cow Hampshire Posts: 4,188	Re: Shift lever and fork size - absolute or relative? Hard way to fix it. Would have been easier (cheaper?) to build up the ball to beyond the groove wear on the forks, make it round, and then mill out the forks to fit the ball. I think it will work but will be "sloppy." You have up to 0.010 slop whereas the original fit was more like 0.003 - which is consistent in machining circles as a "sliding" fit. I would give it a try. If that doesn't work bring only the ball back and have them build that up leaving the forks the size they are. The problem for the machinist is in making the ball "consistent" at different angular approaches: the forks stay planer, the ball approaches the forks at differing angles. If the machining is not "round" then the ball jams in the slot at the end of the travel. Joe K __________________ Shudda kept the horse.