Wards/logan 200 Thread Dial

[bama7]

The more I fix the more I find other stuff to fix or be confused about. I finally got my motor wired so I have forward and reverse by flipping a switch with a separate on off switch. While checking things out a little more I installed the "thread dial". Something is wrong because it wants to climb over the "lead screw" and that is not a good thing at all. The dial I have is approximately 3 5/16" in total length. It has sixteen teeth, but the teeth seem too narrow for the lead screw threads. Is this the correct "thread dial" for my machine or should it be longer so it doesn't "climb" on top of the lead screw? Any suggestions would be greatly appreciated.

 

[eeler1]

Can you take a picture of it on the machine in the engaged position?

 

[bama7]

I reinstalled the thread dial and engaged it and the dial started moving. When I engaged the carriage the dial stopped moving and the carriage moved without any problems. I the pushed the thread dial into the lead screw and turned the lathe on. The result was the thread dial climbing on top of the lead screw. The carriage seems to be tight enough to the ways although I can see that it looks to be lifted, a gap, by the thread dial. I will break it all down tomorrow and see what I can find.[URL=http://s1344.photobucket.com/user/bama7and9/media/002_zps4zjizmv2.jpg.html][/URL][URL=http://s1344.photobucket.com/user/bama7and9/media/008_zpsqqm7n266.jpg.html][/URL]

 

[T Bredehoft]

It appears to be not long enough, the middle of the gauge gears should be on the middle of the lead screw.

Climbing on top may be caused by the slot in the lead screw catching the bottom of the gauge gear and pushing itself (the lead screw) down. .

 

[bama7]

I may have lucked upon something that could be causing my problem. One of the bracket bolts is missing on the right end of the lead screw. I am hoping that it is causing a pivot point, for the lead screw, and allowing the thread dial to climb the lead screw. I will get some new bolts tomorrow and see what happens.

 

[CluelessNewB]

For what it's worth here is a picture of the thread dial that came with my 1945 vintage Logan 820. Note that the gear rides in the middle of the lead screw as Tom suggested. Mine is a bit different than those shown in the manual for the 820 but does seem to match catalog pictures. The body is bronze or brass and it doesn't have any cover over the outside part of the gear. Sorry about the sideways picture. it looks fine on my computer.

 

[brino]

Hey bama,

it looks to me like the entire carriage is lifting up:


you may need to look into that too.

Can you lift the carriage by hand?

-brino

 

[bama7]

brino, I cannot lift the carriage, but I did see the gap.

 

[Chuck K]

Can you take a picture of it on the machine in the engaged position?

 

[Chuck K]

There is no way that you can swing the thread dial past the lead screw if everything is correct. You either have the wrong thread dial or something is assembled incorrectly. What happens when you engage the half nuts? Does the lead screw raise up?