ML7 Clutch

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ML7 Clutch

This topic has 14 replies, 8 voices, and was last updated 14 October 2015 at 20:55 by David Clark 13.

Viewing 15 posts - 1 through 15 (of 15 total)

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21 September 2015 at 17:04 #7808
Roy James 2
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@royjames2
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21 September 2015 at 17:04 #205180
Roy James 2
Participant
@royjames2
Hello all,

I have the drawings for the ML7 clutch from issue 5 1991, which I would like to

adapt to my old, (very old ML2), can someone inform me of the material used

between the two cones ? I have been unable to access the article in question.

james
21 September 2015 at 17:56 #205191
Gray62
Participant
@gray62
Hi James, the conical face of the clutch was covered with leather.

Graeme
21 September 2015 at 18:29 #205195
Roy James 2
Participant
@royjames2
Graeme W, Thank you, overall, quite thick stuff at over 1/8"..

james
21 September 2015 at 18:37 #205197
Neil Wyatt
Moderator
@neilwyatt
I'm sure some people have used cast iron on cast iron.

Neil
21 September 2015 at 18:42 #205200
Gray62
Participant
@gray62
Quite true Neil, in fact the cone clutch on my Studer cylindrical grinder is CI on CI and works very well
21 September 2015 at 18:53 #205202
Michael Gilligan
Participant
@michaelgilligan61133
Posted by Roy James 2 on 21/09/2015 18:29:23:

Graeme W, Thank you, overall, quite thick stuff at over 1/8"..

james

.

The author specifically mentions 'old leather belting'

I suspect that this was machine belting [rather than what holds your trousers up].

MichaelG.
22 September 2015 at 20:43 #205360
Roy James 2
Participant
@royjames2
Thanks to you all,

I have a couple more questions regarding said clutch, can I use copper as a bearing (5) on the counter shaft

pulley, it's only 6" dia, (unit all made many moons ago). I am considering casting the cones in ali, is there a reason

why parts 3&4 are separate, could they be made as one ? ( Bit daunting having to cut threads ).

james
22 September 2015 at 22:58 #205372
daveb
Participant
@daveb17630
Copper isn't ideal but why bother? Porous bronze bushes are not too expensive.
23 September 2015 at 23:44 #205539
Robbo
Participant
@robbo
James,

Parts 3 & 4 are separate as there was at the time a perceived difficulty in buying alloy of the required diameter in the necessary thickness. So the part was made in 2pieces. Nowadays material should be available to make it from a single piece.
24 September 2015 at 14:21 #205578
Robbo
Participant
@robbo
James,

I have sent you a message about the clutch, check your inbox, top green bar on screen, second icon from left.
24 September 2015 at 17:02 #205582
john fletcher 1
Participant
@johnfletcher1
I made the clutch for my ML7 and it worked well in the end. I did use bit of soft leather belting, initially the clutch slipped badly, then some one suggested I get a block of rosin as used by violinists. I crushed the rosin into chips then into a powder. I ran the lathe and opened up the clutch and sprinkled in the powder, did it a couple of times and the problem was solved. I still have the magazine and drawing somewhere. John
24 September 2015 at 19:41 #205593
Neil Wyatt
Moderator
@neilwyatt
> can I use copper as a bearing (5) on the counter shaft

Leaded copper is actually used as a bearing material, comparable to babbitt metal, but its main limitation is that it wears easily. I would avoid it as constant lubrication would be critical..

Neil
14 October 2015 at 19:43 #207866
Roy James 2
Participant
@royjames2
I am going to the Midlands Exhibition, I would like to buy a 4", 4 jaw adjustable chuck for the old Myford ML2, can anyone recommend one of the many sold by the like of Chronas etc? Would also need a back plate. Is it easy

to fit?

Have to cut the keyway in the shaft of the clutch mod, I have no miller, nor verticle slide, how to do it?

james
14 October 2015 at 20:55 #207876
David Clark 13
Participant
@davidclark13
It is easy to fit. Just turn it on the lathe you are using the chuck on so it is true. Hold the shaft in the chuck supported by a centre, use the back gear to stop the shaft from rotating. Cut the slot with a lathe tool ground to fit used on its side and rack the carriage back and forth to form the groove.
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