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Ian Usmar04/02/2019 07:06:50
49 forum posts
10 photos

Dear All,

I seem to recollect a comment about a modification so that the hand wheel on my M Type moves the table in the same direction as the wheel ? Am I imagining it or is there such a thing ? Is it a difficult modification ?

Hopper04/02/2019 07:17:51
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3393 forum posts
66 photos

MEW ran an article by Geoff Walker in the past year or two on this mod. Simple enough, it consists of a bracket and cover that screws on to the apron to hold an extra gear so the direction of the handwheel rotation is both reversed and the ratio lowered, so it's more like other lathes. You should be able to find it one of the online indexes for MEW and buy a back issue.

Ian Usmar04/02/2019 08:03:23
49 forum posts
10 photos

So anyone know what the issue number etc. is.

Michael Gilligan04/02/2019 08:11:07
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12775 forum posts
554 photos
Posted by Ian Usmar on 04/02/2019 08:03:23:

So anyone know what the issue number etc. is.

dont know

Howard Lewis04/02/2019 08:16:07
1812 forum posts
2 photos

The Myford ML2 and ML4 have the same configuration, where turning the handle clockwise moves the saddle towards the Chuck. Confuses mere mortals like me!

No doubt they would benefit from the same sort of modification.

Howard

Robin King04/02/2019 09:39:00
78 forum posts

The late Martin Cleeve described the construction of a replacement apron designed to deal with that problem - from memory in ME late 1950's/early 60's. I built one for my old ML1 - worked a treat.

Hopper04/02/2019 09:58:46
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3393 forum posts
66 photos

It's easily enough done. You need two gears, a large one and a small one. The large one is substituted for the original handwheel. The small gear is mounted on a spindle to mesh with the large gear and the handwheel is mounted on the outboard end of that spindle. So turning the handwheel turns the small gear, which drives the large gear, which turns the original shaft with the original gear engaging with the rack on it.

Hopper04/02/2019 10:02:25
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3393 forum posts
66 photos

Issue 234

https://www.magzter.com/GB/MyTime_Media_Ltd./Model_Engineers%27_Workshop/Home/127588

 

Edited By Hopper on 04/02/2019 10:09:14

geoff walker 104/02/2019 11:33:53
276 forum posts
117 photos

Hi Ian,

Picture below of the mew issue 234 conversion.

If you have a go, don't buy the gears from Muffets like I did, very expensive. Use either Boxford or Myford change wheels and modify them, i.e. change the hole size by bushing the existing hole. Lot cheaper way.

I also made a pattern and had a complete new apron cast for the myford, lot of work but neat with the gears enclosed inside.

20140123_112617.jpgimg_2873.jpgimg_2891.jpg

Geoff

Philip Rowe04/02/2019 11:41:00
164 forum posts
14 photos
Posted by Howard Lewis on 04/02/2019 08:16:07:

The Myford ML2 and ML4 have the same configuration, where turning the handle clockwise moves the saddle towards the Chuck. Confuses mere mortals like me!

You are not kidding, when I started model engineering as a teenager using my father's ML2 I got used to the weird saddle wheel operation but then I didn't know any different. Later on when I started my apprenticeship I discovered lathes with saddle wheels that worked the other way in my view more natural. Confusing I don't think really describes it, I lost count how many times I would ruin a piece because I ran the tool bit into the work instead of away. Usually I would get the hang of it by the end of the day, go home and do something on Dad's lathe and the process would start all over again.

It's many years since the ML2 was replaced so fortunately I don't have that problem any more.

Phil

geoff walker 104/02/2019 11:49:56
276 forum posts
117 photos

Phil

I would agree that switching between lathes with a different handwheel feed rotation is certainly NOT recommended.

A friend of mine had his drummond M type for 40 years using the factory hand wheel feed set up.

He got a casting of me and did the conversion you see in the earlier post. He said after 1/2 hour using the apron he didn't even have to think about which way to turn the hand wheel even after 40 years of turning it the other way

Geoff

Mike Poole04/02/2019 12:12:38
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1811 forum posts
44 photos

Being a regular user of left and right foot gearchange motorcycles I stopped having to think about which foot. A mate wanted to borrow my bike and loaned me his Ducati Desmo 250, this had a reverse pattern change and it floored me completely, I near enough came to a halt thinking about what to do.

Mike

Howard Lewis05/02/2019 11:56:55
1812 forum posts
2 photos

Not just motorcycle manufacturers who caused confusion.

The Bradford van had a mirror image gear change pattern, as did the Guy GS bus for Green Line.

Southdown Motor service had Guy Arabs with Gardner 5LW engines and a mirror image change pattern The following year the later model, with Gardner 6LW had a conventional change pattern.

In those days gearboxes were unsynchronised. Until the drivers spotted which type they had, there were some very unprofessional noises!

Fords changed the arrangement of the steering column controls (indicators & wipers) between Escort and Cortina.

When i drove my pal's car, for a while, I cleaned the screen before turning. Could dodgy on a right hand turn!.

Howard

Neil Wyatt05/02/2019 21:23:53
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Moderator
15700 forum posts
659 photos
73 articles

Try MEW 234, Drummond Rack Feed by Geoff Walker.

Neil

Neil Wyatt05/02/2019 21:25:39
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Moderator
15700 forum posts
659 photos
73 articles
Posted by Mike Poole on 04/02/2019 12:12:38:

Being a regular user of left and right foot gearchange motorcycles I stopped having to think about which foot. A mate wanted to borrow my bike and loaned me his Ducati Desmo 250, this had a reverse pattern change and it floored me completely, I near enough came to a halt thinking about what to do.

Mike

I tried my brother's Honda CM125 and drove round the block without getting out of first gear - aside from starting in second...

Neil

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