Member postings for Terry Holden

Many thanks to everyone who replied - much appreciated.

Double checked it this morning and the level is spot on down the full length of the beds so it should machine accurately. As confirmed above I dont think the very slight "tilt" backwards/forwards and side to side will affect its accuracy.

I will however get some suitable material and turn a test piece to check.

Thanks again.

Terry

I have borrowed an engineers high accuracy spirit level to level my newly installed Super 7.

It is a fiddle but I have managed to get both beds in synch but they are an equal amount out of level back to front i.e. looking from the end. In other words with the level across both beds it reads exactly the same at both ends of the beds and the bubble is the same amount off centre at both ends. Does this matter I suspect not.

Also the lathe is also very slightly out of level side to side as looking from the front but again I suspect that is not important. Am I correct ?

Thanks

Terry

Thank you very much for your reply Trevor. Think that with the information I now have I am good for go. I have DOL

to wire in as well. Thanks Terry

Thanks everyone for your replies but above information relates mainly to fitting a Dewhurst switch. My new switch has different connections.

from my first post

"I think U1 is main live to go to post AZ. U2 is neutral to go to post A and that Z1 and Z2 are start circuit connections to go to the purple and red wires which reverse the motor. I think Z1 and Z2 can be reversed to match the direction of the motor with the switch."

Can anyone who has done this confirm what I think is correct ? Alternatively is there anyone here who is an electrical expert who I could send the diagram and information to by e mail to get advice.

Terry

Thanks Steve those are the connections for a Dewhurst switch. The one I have is similar but with different connections. I still need to check that I am getting the right connections between switch and lathe as in my second paragraph at start. Thanks for the help.

Many thanks for reply. Yes I am aware of the risk of reversing the chuck but it was never a problem with my previous 7 over many years. Just need to be careful. Would still like to connect up this new switch but will also use DOL starter switch for off / on duties.

The internals of the new switch I have are illustrated in the thread under General Questions titled Reversing Motor by Keith Jenkins.

Can any body confirm the wiring connections please.

Thanks

I want to fit a new modern tumbler type reversing switch to my existing Super 7 motor which is a Beaston 0.55 kw 3/4 HP 240 v. The switch output wires are shown as UI,U2,Z1 and Z2.

The motor connections are AZ, A, purple wire removed from post AZ and thin red wire removed from post A.

I think U1 is main live to go to post AZ. U2 is neutral to go to post A and that Z1 and Z2 are start circuit connections to go to the purple and red wires which reverse the motor. I think Z1 and Z2 can be reversed to match the direction of the motor with the switch.

If anyone has recently done such a change would be very grateful to receive confirmation I have this right (or wrong ! ) before I proceed.

Can confirm that on wiring diagram with switch U1 is is connected to live and U2 connected to neutral.

Thanks