Myford Dial Indicator Problem...

[Seaco]

OK the problem is I've never had one so got this one from Ebay it's like new but having never had one I'm not sure how it fits, I know where it goes but I'm not sure how the little bracket fits?

I have looked on the web but can't find a clear pic or explanation on how it fits so I thought I know who will know so here it is! Below is a few pics of what I've got...

Lee

[jgb7573]

Hi Lee,
My dial indicator bolts directly to the apron without use of the bracket. It bolts to a hole on the right of the apron. You pivot the indicator on the bolt to engage the gear wheel with the leadscrew. You disengage the same way if you're not using it. You vary the number of fiber washers in order to align the fiduciary line with the divisions on the rotating disk.
I guess the bracket is used for different aprons to mine (Super 7 with auto-feed cross-slide).
John
PS Never used the word fiduciary before. Hope I've got it right

[Deleted]

Hi Lee
I don't have a Myford - or a dial indicator for that matter- but just about every lathe in the Land with one will have one, two or three screw holes tapped into the RH side of the saddle just above the leadscrew line. There may be nice little blanking screws in there to stop swarf and dirt getting in.

The gadget is held friction tight and rocked into place when you want to use it, although I have seen some fixed in place.

Myford experts are like buses: you wait a bit, then you'll get two or three coming along at the same time....
JB

Sorry to correct anyone, and I don't know the correct term in this case, but I think Fiduciary is something to do with monies held in or on trust: I came across the term when working with Local Authority Treasurers. They have a 'Fiduciary Duty' not to risk our money! Anyone remember BICC.....? Or Iceland??

[rodwilson]

What JB says.

From your photograph you need to reverse the bolt and washers and try without the bracket. That poece could be for a different lathe.

PM me if you need a photograph or a copy from the Myford book.

By the way: there will be another Myford owner along in a minute ;D

[Seaco]

Blimey lads that was quick JohnB so the washers are to align the cog to the leadscrew is that correct, will the numbers index correctly when fitted or do I have to say align 1 when I fit it?

I had to look fiduciary up and it says "a person to whom property or power is entrusted for the benefit of another" OK now I'm lost...lol

Hi Simplloco
No blanking screw I'm afraid just some crud, I'm glad you can rock it out of the way when not in use saves on wear...

Lee

[Seaco]

Hi Rod

Thanks mate did you have to use the fibre washers to get it to align? I'll let you know if I need the pics...

[Tel]

A bit messy, but this is the only pic I could find with a quick look thru my stuff. Might help.

Attachments:

[stubee]

Here you go, this is on my S7 ... currently swung out of the way


Stu

[jackrae]

The word required is "Fiducial" not "fudiciary"
These refer to the reference marks shown on any measuring device
jack

[Seaco]

Thanks everyone that's shown it fine I to have a Super 7 so I'm sorted apart from knowing whether I need to index the dial to a certain number when I swing it into use it or does it index automatically?

Sorry for being thick!

Lee

[Deleted]

Feb 7, 2011 20:14:08 GMT Seaco said:

Thanks everyone that's shown it fine I to have a Super 7 so I'm sorted apart from knowing whether I need to index the dial to a certain number when I swing it into use it or does it index automatically?

Sorry for being thick!

Lee

When you install it, you space the gadget using washers to ensure that any rotating division mark lines up with the fixed (fiducial?) mark. It doesn't matter at what number you engage the leadscrew to start with, but you have to engage at designated numbers if you cut certain thread pitches. I won't go into it here - which means I've forgotton how - but I get over it by leaving the leadscrew engaged and fast reversing the saddle. Just try it, you will enjoy screwcutting.
JB

[Seaco]

Thanks JB that's cleared it up for me and thanks again to everyone for the help!

Lee

[Boadicea]

Feb 7, 2011 20:19:24 GMT simplyloco said:

...It doesn't matter at what number you engage the leadscrew to start with, but you have to engage at designated numbers if you cut certain thread pitches. I won't go into it here - which means I've forgotton how ....JB

For even numbered TPIs, engage at any of the four indicator numbers.
For odd numbered TPIs engage at any two diametrically opposite indicator numbers.
When cutting half threads (not often you need 16½ tpi!) , use the same indicator number each time.
Alternatively, either use the Simplyloco reversing method or just stick to one number - it will take longer but you can reflect on life while doing it!

[Deleted]

Ahh, thanks Boadicea, I remember now! If only I could work out what happens with metric pitches.....
JB

[Boadicea]

Feb 8, 2011 16:01:27 GMT simplyloco said:

Ahh, thanks Boadicea, I remember now! If only I could work out what happens with metric pitches.....JB

Mmm! I have a gearbox and have bought the banjo and wheels so I can do metric with it. Sadly I have not got around to doing it. It is surprising how close metric is, or can be if you look from the side, close to imperial tpi! Naughty I know but 33.87 is very close to 34, especially when spread over an inch!
Perhaps I should have bought the other sort of banjo - I sometimes look like I need one when I have had a day's running and not quite got the oil right! Oh dear, is that non-PC! No offence meant - just part of British sense of humour, just like "Top Gear" and the the Mexican!