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Only for Myford lathes

Mods & tips for the Myford lathes.

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Kiwi Bloke19/04/2020 07:12:42
461 forum posts
1 photos

Graham, EPDM rubber (if that's what you meant, but your fingers thought otherwise) is not compatible with hydrocarbons. Nitrile rubber is OK. So your bit left over lives for another day...

Mike Poole19/04/2020 07:33:40
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Moderator
2752 forum posts
64 photos

I have a feeling that Myford did start sneaking a few metric threads onto their lathes. The Allen screws that hold the headstock to the bed were changed to 8mm at some point. The screw holes provided on the flat surface on the back of the bed for mounting the taper turning attachment were 6mm on my bed I think, I could not get a 1/4BSF screw to start so thinking it was probably just paint and crud I ran a 1/4BSF tap in, it took a bit more than muck out though. 6mm is 1mm pitch which is 25.4tpi and 1/4BSF is 26tpi so they are very close. I finished up running the tap through all of the back pad holes as having one odd one would be a nuisance. Not good practice but I think they are so close in pitch and the slight increase in diameter has probably left a useful thread in the holes. The screws on my cross slide are a mixture of 2BA and 5mm the gib adjusters are 2BA and the slide locks are 5mm. This is the long cross slide on a ML7R and is definitely as it left the factory.

Mike

Hopper19/04/2020 08:54:47
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4823 forum posts
105 photos

Lol. Well there you go. Sounds like Myford were building parts bin specials using what was available. Bit like Meriden Triumph in the day.

Mike Poole19/04/2020 09:11:13
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Moderator
2752 forum posts
64 photos

Triumph must have kicked themselves after having converted to UNF and UNC the world switched to metric. I suppose Myford were finding that the price of imperial fasteners and tooling was rising with decreasing availability so quietly fed in a few metric substitutes. The decline in sales would also mean that they would not be buying in large quantities so not much discount available there either, a vicious spiral.

Mike

ega19/04/2020 11:57:44
1814 forum posts
154 photos
Posted by Mike Poole on 19/04/2020 09:11:13:

Triumph must have kicked themselves after having converted to UNF and UNC the world switched to metric. I suppose Myford were finding that the price of imperial fasteners and tooling was rising with decreasing availability so quietly fed in a few metric substitutes. The decline in sales would also mean that they would not be buying in large quantities so not much discount available there either, a vicious spiral.

Mike

I heard that the oversize-head cap screws holding the Myford saddle to the apron were replaced with metric because the imperial ones were too expensive.

Graham Stoppani20/04/2020 05:33:26
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84 forum posts
13 photos
Posted by Kiwi Bloke on 19/04/2020 07:12:42:

Graham, EPDM rubber (if that's what you meant, but your fingers thought otherwise) is not compatible with hydrocarbons. Nitrile rubber is OK. So your bit left over lives for another day...

Thanks for the warning. I even checked the name of the rubber before typing and still got it wrong!

Morty20/04/2020 12:12:37
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72 forum posts
83 photos

Hi Everyone!

Just bought My Super 7 last year, and I am making use of the Lockdown to strip and refurbish it, link below:-

https://www.model-engineer.co.uk/forums/postings.asp?th=155128

Cheers, Pete

Steviegtr20/04/2020 19:52:44
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1524 forum posts
167 photos
Posted by Morty on 20/04/2020 12:12:37:

Hi Everyone!

Just bought My Super 7 last year, and I am making use of the Lockdown to strip and refurbish it, link below:-

https://www.model-engineer.co.uk/forums/postings.asp?th=155128

Cheers, Pete

Hi Morty, glad you found this thread. Keep up your good work.

Steve.

Baz20/04/2020 20:07:49
476 forum posts

I had the same problem as Mike Poole regarding the taper turning attachment, I have ended up tapping them all out to 1/4 BSF, the cross slide also has a mix of screws, machine is a ML7R grey no power x feed.

Russ B23/04/2020 08:00:46
589 forum posts
25 photos

I sold my Super 7 when I got my Myford 280, it's an incredible bit of kit, double vee and flat bed, Gamet super precision taper roller bearings, all geared and quick change everything. The machines are entirely metric with an imperial version using imperial screws. I have the Vickers planetary metric/imperial dials too.

Someone converted it to a Newton Tesla drive but they didn't get the right speed motor. Originally these were fitted with dual speed motors giving upto 1000 or up to 2000 rpm. I have corrected the pulleys so at 100% it now runs at the higher speed and it's all down from there - but not much below half as the gearbox relies on flinging oil about to lubricate the box and nose bearings.

As the name suggests, it swings 280mm over the bed, 174mm over the cross slide, 600 between centres and has a 26mm bore though its D1-3 camlock spindle.

It's a great piece of kit, after owning many many lathes I thought the Super 7 was a really slick productive and solid piece of kit, but this 280 is far superior, I love it!

Steviegtr23/04/2020 14:00:32
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1524 forum posts
167 photos

Yes the 280 does look like it was made after thinking through what the Super 7 series lacked. Great purchase. Enjoy.

Is it not a bigger machine though. Comparing a Bentley to a Mini sort of thing.

Steve.

Russ B23/04/2020 14:46:53
589 forum posts
25 photos

Steve, it's not that much bigger to be honest.its of the more modern boxy design, similar to how a Chinese 3.5" centre lathe is half the size of a Myford 3.5 centre (ML7 or Super7) it's significantly lower for some unknown reason, but in terms of floor space, it slotted in exactly where my Super 7 / Boxford was, it does end up being closer to the wall corner (tailstock end) but there's still a good foot in the corner for me stand metal and plastic stock up.

Russ B23/04/2020 14:46:54
589 forum posts
25 photos

Steve, it's not that much bigger to be honest.its of the more modern boxy design, similar to how a Chinese 3.5" centre lathe is half the size of a Myford 3.5 centre (ML7 or Super7) it's significantly lower for some unknown reason, but in terms of floor space, it slotted in exactly where my Super 7 / Boxford was, it does end up being closer to the wall corner (tailstock end) but there's still a good foot in the corner for me stand metal and plastic stock up.

Steviegtr24/04/2020 00:04:55
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1524 forum posts
167 photos
Posted by Russ B on 23/04/2020 14:46:54:

Steve, it's not that much bigger to be honest.its of the more modern boxy design, similar to how a Chinese 3.5" centre lathe is half the size of a Myford 3.5 centre (ML7 or Super7) it's significantly lower for some unknown reason, but in terms of floor space, it slotted in exactly where my Super 7 / Boxford was, it does end up being closer to the wall corner (tailstock end) but there's still a good foot in the corner for me stand metal and plastic stock up.

What years were they made , out of interest.

Steve.

Kiwi Bloke24/04/2020 08:40:30
461 forum posts
1 photos

I'm jealous as hell. No chance of finding one here in NZ, of course.

It looks like the 20th century hit Myford with a bang, and they got so scared they had to stop making them. What a pity. The 254 is a very anaemic-looking thing, in comparison. Interesting that there is no separate feed shaft: I suppose there's a keyway all along the leadscrew, for cross-slide power feed.

Any idea of new price, compared to Emco Super 11 and V13?

Steviegtr24/09/2020 22:33:29
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1524 forum posts
167 photos

I have done a bit more work on the Myford super 7B. A few things that niggled me need addressing so i did the cross slide handwheel bush. For most it will be 24minutes you will never get back. But some may find it of some interest. The video work is rubbish so go easy on me. Also the machine has had a fair bit of use lately & needs a good clean. I do suffer from guy martin syndrome a bit so i tend to digress a lot. Apology in advance.

Steve.

Myford super 7 mods

Alan Wood 425/09/2020 10:15:34
152 forum posts
6 photos

Just fitted the Clough42 Electronic Leadscrew to my Myford S7 Big Bore. Lovely to have automatic feed without the associated gearbox noise.

Done a write up here ELS on Myford S7

Alan

Steviegtr25/09/2020 11:55:34
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1524 forum posts
167 photos
Posted by Alan Wood 4 on 25/09/2020 10:15:34:

Just fitted the Clough42 Electronic Leadscrew to my Myford S7 Big Bore. Lovely to have automatic feed without the associated gearbox noise.

Done a write up here ELS on Myford S7

Alan

Wow. Just had a look at the job you did. Very nice.

Steve.

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