Hello again, hello...

[tcbetka]

The serial number on the newer headstock I have is 150575, which appears to give it a 1983 manufacture date. So I think it's still a model 500 unit, if I'm not mistaken. TB

All headstocks prior to the powerpro where MK500's. It's the table system that that makes it a different modal number.

Well, except for the 'C' headstock (1991) where they started installing the newer red power switch. I guess that's what I was getting at--that it didn't have the "red safety key switch."

TB

[beeg]

The serial number on the newer headstock I have is 150575, which appears to give it a 1983 manufacture date. So I think it's still a model 500 unit, if I'm not mistaken. TB

All headstocks prior to the powerpro where MK500's. It's the table system that that makes it a different modal number.

Well, except for the 'C' headstock (1991) where they started installing the newer red power switch. I guess that's what I was getting at--that it didn't have the "red safety key switch."

TB

It's still a MK500.

[jsburger]

Bob,

Why do you say that all head stocks are a Model 500? The head stock does not determine the machine model number. It is the table system as you said. The head stock does not have a model number just a part number depending on what parts are inside and the casting.

[JPG]

While we're on the topic of getting these things up and running again, I have another question...

On the model 500 vs model 510 issue, the "tool history" page of the main site indicates that the model 510 was first released in 1985. The serial number on the newer headstock I have is 150575, which appears to give it a 1983 manufacture date. So I think it's still a model 500 unit, if I'm not mistaken. It also has the metal bat on/off switch. I have upgraded the saw table system to that of the model 510, but the headstock still might be a model 500.

So did the model 510 have the red plastic power switch? It sort of looks that way from the picture on the tool history page, but I can't tell for sure. And the tool history page also seems to suggest that the 'C' headstock was the first to have the red power switch. Not that it matters a whole lot, but I guess I'm just trying to learn as much as possible about these things.

Thanks.

TB

It is the relocation of the switch and the square hole that defined the "C" headstock. The access hole was also enlarged at that time. None of those changes could have occurred with out new molds - hence the "C" version was created when the new mold design was made.

So 510s came in both "B" and "C" castings. As did 500s. Not sure re the 520 release/"C" casting dates.

As BEEG said, the tables etc. is the model distinction. The headstock does not vary until the "C" casting and then does not vary up until the power pro and then only with the addition of some holes etc..

[tcbetka]

It also makes a difference in terms of the point at which they switched over to the double bearing quill system. I think that was in 1984 if memory serves--one year before the model 510 came out in 1985. My headstock was made in 1983, but the fellow who refurbished it installed the double bearing system. So in essence then, I think I pretty much have the same (non-"C") headstock that came with the model 510 tables.

TB-

[JPG]

It also makes a difference in terms of the point at which they switched over to the double bearing quill system. I think that was in 1984 if memory serves--one year before the model 510 came out in 1985. My headstock was made in 1983, but the fellow who refurbished it installed the double bearing system. So in essence then, I think I pretty much have the same (non-"C") headstock that came with the model 510 tables.

TB-

You have a 1983 Mark V (5)? with an upgraded two bearing quill and the 510 table upgrade.

Now which 510 table system do you have?

[tcbetka]

You have a 1983 Mark V (5)? with an upgraded two bearing quill and the 510 table upgrade.

Now which 510 table system do you have?

Great question! Beats me...

TB

[JPG]

You have a 1983 Mark V (5)? with an upgraded two bearing quill and the 510 table upgrade.

Now which 510 table system do you have?

Great question! Beats me...

TB

Got access holes on the 'front'of the rails = original.

Rails secured with kepnuts inside the table front/back = new/current version.

[tcbetka]

Ah...simple enough. Cool. I'll have to wait a few days until I can get out into the shop again, post-surgery. But I'll check that out. I'm inclined to say it's the original, because I don't recall seeing any kepnuts when I last looked at the tables.

Functionally, is there a difference?

Thanks.

TB

[JPG]

Ah...simple enough. Cool. I'll have to wait a few days until I can get out into the shop again, post-surgery. But I'll check that out. I'm inclined to say it's the original, because I don't recall seeing any kepnuts when I last looked at the tables.

Functionally, is there a difference?

Thanks.

TB

Depends upon who you ask!

The 'tubes' are the same OD, but the wall thickness differs. Not a problem unless you have some from both versions and attempt to use them together/interchangeably. Very small difference, but enough to matter at times. The original has thicker walls.