I think I have identified the problem now, and I will really appreciate some advice on what is causing the problem, if anyone has the patience, and preferably owns a similar lathe.
Further to the kefuffle I posted yesterday, I set up the gears carefully and started the lathe. Everything ran quietly and smoothly until I engaged the half nuts with the threading handle.
The second from the bottom 'idler' gear, disengaged violently and twisted the shaft away from the adjusting arm.
I removed the idler gear and turned the bottom gear by hand.
This gear is on the end of the lead screw, and it revolves freely, and the lead screw turns.
This lathe had two levers on the carriage. The powered longitudinal/cross feed lever, and a lever to engage the half nuts for cutting threads.
With the longitudinal feed handle engaged, I can turn the lead screw by hand, and the carriage moves easily along the ways. The big wheel on the carriage turns.
When I engage the lever that engages the half nuts, everything locks up. I cant turn the lead screw and the carriage wont move.
Any ideas please??
Further to the kefuffle I posted yesterday, I set up the gears carefully and started the lathe. Everything ran quietly and smoothly until I engaged the half nuts with the threading handle.
The second from the bottom 'idler' gear, disengaged violently and twisted the shaft away from the adjusting arm.
I removed the idler gear and turned the bottom gear by hand.
This gear is on the end of the lead screw, and it revolves freely, and the lead screw turns.
This lathe had two levers on the carriage. The powered longitudinal/cross feed lever, and a lever to engage the half nuts for cutting threads.
With the longitudinal feed handle engaged, I can turn the lead screw by hand, and the carriage moves easily along the ways. The big wheel on the carriage turns.
When I engage the lever that engages the half nuts, everything locks up. I cant turn the lead screw and the carriage wont move.
Any ideas please??
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