BP Backgear problem

Have you released the direct drive pin connection to the cone pulley?

Harry C.

Where's that? There is no mention of that in the book.

JW

Its right on top of the unit. it rotates almost 1/4 turn. There's a slot that raises/lowers a pin as you rotate the collar. My 1J has instructions printed on the machine.

Anyway, you have four combinations: High gear, back gear, free wheel, and lock. I use lock all the time to unscrew the R8 collet; my brake is broke.

Karl

I will have to take a look for it.

The plate on the front(and the book) both state: rotate the shift lever from high gear to Neutral to Low gear. Nothing about a lock pin. I thought there might be something, similar to my lathe, but then I thought that the shift lever might take care of it somehow internally.

Thanks

JW

You have a book from a 2J head. It has a single lever to operate both "clutches". The 1J has two separate controls. There is a lever with a ball detent handle on the right rear of the belt housing. Normally, front is back gear not engaged, move to rear to engage the back gear. It works by lowering a pinion into mesh with the bull gear.

The other thing is the direct drive clutch. The driven pulley up on top is mounted with a sliding bearing. There is a cam ring, right on the top of the pulley housing where you tighten the drawbar, that can raise the whole pulley assembly about 1/4". The bottom of the pulley shaft has 4 clutch teeth on it. The top of the bull gear shaft has 4 notches that mate with the clutch teeth when they are down. This part also has the spline that drives the spindle itself. The two pins in that cam ring screw into rather small threaded holes in the pulley carrier. They are a frequent trouble spot on the 1J. I had to retap the holes one size bigger and make new pins. I've had no trouble since that repair.

So, when the back gear is engaged, you want the direct drive clutch out (up). You have to run the motor in reverse when in backgear to get the same spindle direction.

Jon

Hey JW,

You are also turning the handle at the top of the quill pulley, to lift the two gear sets apart, are you? It's gouing back the other way that causes some problems, but not a lock-up!!

Take care.

Brian Lawson, Bothwell, Ontario. XXXXXXXXXXXXXXX

Found the part on the top I was supposed to turn. The handle was missing, which made it less obvious. Now to find a handle! Surprised the plate on the head telling me how to run the backgears does not mention this 2nd operation. I can understand why my book doesn't(as others surmised it is for a 2J).

Thanks everyone.

JW

Lots of BPs have a chunk of steel threaded and screwed in. Ive got on client that is all of 4' tall and has made a long upside down L shaped handle so he can reach it.

Its rather fascinating working in a shop designed for a midget. A hell of a machinist too.

Ive got another shop that is designed for a paraphligic. Good machinst..does production work out of a wheel chair. The dude has biceps bigger than my thighs. Hardcore strong dude.

Gunner

Rule #35 "That which does not kill you, has made a huge tactical error"

Would you tell me a little more about the modifications he's made to the equipment in his shop... I read a thread recently about making blacksmithing more acessable to the handicapped, and it tweaked my curiosity.

It seems like it would be a real pain to run any large lathe, like over