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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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BP Backgear problem
I have a 1J step pulley BP mill that I have finally powered up and
tried out. I have tried all of the direct drive gears and it works well. Wehn I shift in the backgears, it locks everything up tight. You can definitely feel it shift the gear train, but something must not be releasing as it locks the spindle. My assumption from looking at the parts diagram is that the cone drive is not being disengaged resulting in a locked state. Does this sound logical? Or does someone have an alternative theory? Thanks JW |
#2
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Have you released the direct drive pin connection to the cone pulley?
Harry C. |
#3
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Where's that? There is no mention of that in the book.
JW |
#4
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wrote in message oups.com... Where's that? There is no mention of that in the book. 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 |
#5
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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 |
#6
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#7
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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 On 7 Feb 2005 10:53:17 -0800, wrote: I have a 1J step pulley BP mill that I have finally powered up and tried out. I have tried all of the direct drive gears and it works well. Wehn I shift in the backgears, it locks everything up tight. You can definitely feel it shift the gear train, but something must not be releasing as it locks the spindle. My assumption from looking at the parts diagram is that the cone drive is not being disengaged resulting in a locked state. Does this sound logical? Or does someone have an alternative theory? Thanks JW |
#8
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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 |
#9
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#10
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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 10" or so. Not impossible, just a real pain to see over the top of the work... |
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