Thread: Shoulda known

Was just wonderin'
should I do the quick change gearbox and the apron as well...actually thats a no-brainer really. At the very least they will get an oil change and I will be assured that the oil level is correct and not completely rely on the sight glass which has now become part of the 'total loss system' that has developed in the head stock. No leaks anywhere...just the sight glass, at least it reads the correct level though.

Phil

Originally Posted by Steamwhisperer

Was just wonderin'
should I do the quick change gearbox and the apron as well...actually thats a no-brainer really. At the very least they will get an oil change and I will be assured that the oil level is correct and not completely rely on the sight glass which has now become part of the 'total loss system' that has developed in the head stock. No leaks anywhere...just the sight glass, at least it reads the correct level though.

Phil

Hi Phil,
If your in the QC gearbox could you take me a few pics and give me a rough idea of D.P and no of teeth? As i sit here with my man flu i have been pondering the problem of making a gearbox for my little lathe, and the biggest problem i have is what D.P gears i should use.

Phil,
cleaned out the QCGB which had nowhere near the crap as in the headstock,
needed to replace bearings and guessed they just bang them in damaging the bearings.
once the bearings were replaced it wasn't a struggle turning the change gear by hand.
also pulled apart the apron and tailstock which contained grit as well.
It's made a big difference in the feel, compared to how it was new.

as for the headstock, the only way to make sure that all the sand is out is by completely stripping it, as there are many places it gets into that cant be cleaned out.
had cleaned the headstock before running it, which was useless, as there was sand in between the 2 brass bushes of the change gear shaft, the shaft caps, threaded holes e.t.c.

Simon,
How soon can the headstock be filled with oil when using POR15 ?

Originally Posted by Ueee

Hi Phil,
If your in the QC gearbox could you take me a few pics and give me a rough idea of D.P and no of teeth? As i sit here with my man flu i have been pondering the problem of making a gearbox for my little lathe, and the biggest problem i have is what D.P gears i should use.

I just come up from the shed, I will grab my manual from down there tomorrow and let you know, it lists all the gears in mine.

Dave

Originally Posted by lather

Simon,
How soon can the headstock be filled with oil when using POR15 ?

Hi,

To be totally honest, I can't remember. I'll find the instructions and let you know. Actually I just found it online. I think I waited about 24 hours even though it says 2 - 5 hours.

It's bloody good stuff. When it dries it's like glass. As you can see I got the black stuff. I was hoping to get the grey but when it turned up it was black.

Cheers

Simon
http://www.por15.com/Data%20Sheets/P...cationInfo.pdf

I used the starter kit. It comes with the marine clean, etch primer and just enough paint to give the headstock two coats.

Are you blokes sure it is sand in these gearboxes?..... maybe it is course lapping compound.

I don't know enough about the manufacturing process to make comment on that.

All I know is that there was loose stuff in the bottom AND stuff (sand, grit) that had to be scraped and chiselled out before I was left with a clean cast iron box.

Simon

Actually Simon, using the POR15 is probably a good move. At least you shouldn't have problems any more with barnacles growing in the headstock

When I first got my shaper (before strip down) I couldn't engage a couple of the gears. The seller was associated with a TAFE in QLD and it was a 1960's vintage machine that had been used so I was confused why this would be so. The answer came when I took it apart - there was a mud wasp's nest in there. Apparently the machine had been stored for a while and some mechanically minded wasps decided it was a good thing...

Michael

Originally Posted by Dave J

I just come up from the shed, I will grab my manual from down there tomorrow and let you know, it lists all the gears in mine.

Dave

Thanks Dave,
I have reverse engineered the plaque off a 960b so i know what ratio's i need, but i really don't know how big to make the gears, i'm thinking 16 or 18 dp, but the gears get big quickly.

Sorry to hijack your thread Phil, i hope when i get a box made it won't somehow magically fill with sand......

Originally Posted by Michael G

Actually Simon, using the POR15 is probably a good move. At least you shouldn't have problems any more with barnacles growing in the headstock

When I first got my shaper (before strip down) I couldn't engage a couple of the gears. The seller was associated with a TAFE in QLD and it was a 1960's vintage machine that had been used so I was confused why this would be so. The answer came when I took it apart - there was a mud wasp's nest in there. Apparently the machine had been stored for a while and some mechanically minded wasps decided it was a good thing...

Michael

Must be a shaper thing, i knocked a couple of old nests out of Freddie too!
Damn little buggers will build anywhere they think is a good place, when i lived down the coast they where everywhere, when we moved i even found a nest between 2 books in my bookshelf!

Originally Posted by Metmachmad

Are you blokes sure it is sand in these gearboxes?..... maybe it is course lapping compound.

When I cleaned my mill up there was all black casting sand in it, and I don't think they lap anywhere on the mill.
I don't think the blast the castings, or at least not good enough if they do.

Dave

Originally Posted by Ueee

Thanks Dave,
I have reverse engineered the plaque off a 960b so i know what ratio's i need, but i really don't know how big to make the gears, i'm thinking 16 or 18 dp, but the gears get big quickly.

Sorry to hijack your thread Phil, i hope when i get a box made it won't somehow magically fill with sand......

Here you go, sorry I forgot to rotate the picture before uploading it.



Dave

Originally Posted by Dave J

Here you go, sorry I forgot to rotate the picture before uploading it.



Dave

Thanks Dave,
They are a much bigger Module than i expected. I guess for manufacturing the less teeth to cut the cheaper it is.