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Myford Super 7 metric change gears

Myford 7 with quick change box

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Peter Hogan 212/01/2018 17:58:50
7 forum posts

Hi all.

can I just get the gears listed inside the gear cover and fit them or will I need the special quadrant ?

Thanks in advance.

Pete H

Hillclimber12/01/2018 18:24:42
avatar
113 forum posts
22 photos

First question. Do you have a gearbox? Whether you do or not determines the answer....

Cheers, Colin

Peter Hogan 212/01/2018 18:47:26
7 forum posts
Posted by Hillclimber on 12/01/2018 18:24:42:

First question. Do you have a gearbox? Whether you do or not determines the answer....

Cheers, Colin

Yep, the gearbox was fitted from new I thing, 1968 by the serial No.

Pete

Hillclimber12/01/2018 19:05:01
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113 forum posts
22 photos

In which case you do need the metric conversion set, including quadrant, I'm afraid.

Alternatively, you could just take the gearbox off and sell it to me, which makes the conversion much easier.....

Cheers, Colin

Brian Wood12/01/2018 19:46:28
1570 forum posts
35 photos

Peter,

Arc Euro are selling my book for £12.95 on gearing for screwcutting which describes the simple modification you can make to your S7 and use any mandrel gears up to 70 + teeth, matched with the selected gearbox choice to generate Metric, BA, DP, Module and several other threading pitches without have to buy the Myford metric quadrant

Another benefit is that you retain the fine feed option throughout and you get to keep your gearbox!!

Regards

Brian

Peter Hogan 212/01/2018 20:40:58
7 forum posts
Posted by Brian Wood on 12/01/2018 19:46:28:

Peter,

Arc Euro are selling my book for £12.95 on gearing for screwcutting which describes the simple modification you can make to your S7 and use any mandrel gears up to 70 + teeth, matched with the selected gearbox choice to generate Metric, BA, DP, Module and several other threading pitches without have to buy the Myford metric quadrant

Another benefit is that you retain the fine feed option throughout and you get to keep your gearbox!!

Regards

Brian

Now that is the way to promote your hard work.

You'r the man for me, add onr to you sold list!

Pete.

Peter Hogan 212/01/2018 20:43:06
7 forum posts
Posted by Hillclimber on 12/01/2018 19:05:01:

In which case you do need the metric conversion set, including quadrant, I'm afraid.

Alternatively, you could just take the gearbox off and sell it to me, which makes the conversion much easier.....

Cheers, Colin

Sorry Colin, I rather fancy keeping it most of my stuff is imperial!!laugh

Pete

JohnF12/01/2018 20:54:39
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642 forum posts
60 photos

Peter, If you want to use the original Myford method with your gearbox then yes you need a special quadrant and some extra change wheels.

However see the links below and you can get very, very close to all the metric pitches you need with much less fuss and less cost, you need only a few change wheels to change then use the gearbox as well and bob's you uncle.

There are some links in these posts as well -- hope this helps John

http://www.model-engineer.co.uk/forums/postings.asp?th=125630&p=4

http://www.model-engineer.co.uk/forums/postings.asp?th=131925

Hopper13/01/2018 03:20:39
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2649 forum posts
41 photos

Having bought a copy of Brian Wood's book, I can verify that what he says is true. Well worth the money.

Hillclimber13/01/2018 09:19:08
avatar
113 forum posts
22 photos

Guess I'm going to have to buy one of Brian's books too.... !

Brian Wood13/01/2018 09:26:53
1570 forum posts
35 photos

Now----steady on chaps, but please do and get one for a friend as well.---!!

Brian

Andrew Tinsley13/01/2018 16:05:18
737 forum posts

Brian's book is a gold mine of information and it is beautifully produced too. Well up to coffee table standards. That is where my copy lives, just to confuse visitors.

Andrew.

norm norton14/01/2018 12:54:55
75 forum posts
5 photos

Hi Peter

If you have the gearbox fitted then you do not need a metric quadrant to be able to cut metric and BA threads.

There is a simple solution using swaps of the tumbler feed gear and this has been written about many times. This is what Brian's book describes. There is a link here to this forum **LINK** when the subject was raised a few years ago.

I can supply you with a complete table of all the tumbler gear swaps if you message me with your email.

Norm

Edited By norm norton on 14/01/2018 13:00:55

Edited By norm norton on 14/01/2018 13:03:14

Carl Wilson 414/01/2018 13:03:04
avatar
640 forum posts
53 photos
Just as an aside we can 3d print these gears for you.

We've just done some for a Drummond M type so we are kind of in the zone. Let me know if interested.

Carl.
norm norton14/01/2018 13:07:22
75 forum posts
5 photos

Printed gears is a good idea. Of course the 33 and 34 teeth tumbler items were made and sold by our friend John Stevenson, who is no longer with us.

Norm

Carl Wilson 414/01/2018 13:43:01
avatar
640 forum posts
53 photos
We can make gears for a variety of machines.

Pm me with your requirements and we'll be pleased to quote.

Carl.

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