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Member postings for Miles Hellon

Here is a list of all the postings Miles Hellon has made in our forums. Click on a thread name to jump to the thread.

Thread: Restoration and modifications to a Tom Senior light vertical mill
01/07/2020 08:10:16

Thanks old mart. Counterbalancing with weight is a good idea. I'm not too happy working at the limit of longitudinal travel either. Jobs like this are a good case for having a head which rotates around the axis of the column....

Looks like it will be a day's preparation for 1/2 hour machining

Miles

30/06/2020 10:29:45

No progress on the Light Vertical itself but I need to use it to do some modifications to a Wadkin sawbench that I'm restoring.... I'd appreciate some feedback on this...

I have to cut a rebate into the edge of the saw's table. This is my plan to support the table on the mill, using the existing fixing system and two 50mm x 20mm bars. Does it look ok? I could put a jack where the ribbing reduces? The table weighs about 45kg......

Miles

table mod 5.jpg

table mod 6.jpg

Thread: Machine moving
13/06/2020 19:43:34

Steve collecting and delivering my Myford 254. As others have said, someone you can depend on.

img_20160511_092729886_hdr.jpg

myfored-254-wrexham-2.jpg

myford-254-greenwich-1.jpg

Edited By Miles Hellon on 13/06/2020 19:45:33

13/06/2020 19:33:45

Steve delivering my Tom Senior LV

pc290590.jpg

Thread: Restoration and modifications to a Tom Senior light vertical mill
07/05/2020 17:54:16

Tried heating up the chuck's collar with my soldering iron, in an attempt to free it. No luck with that.

p5070964.jpg

Anyway, managed to extract the chuck with the wedges, using this setup:

p5070965.jpg

Thanks again for the help.

07/05/2020 14:19:07

Thanks Steve

07/05/2020 13:56:48

I found this thread: **LINK**

07/05/2020 13:42:50

Thanks Jason,

This is to remove a collet chuck from the machine. I could turn the head horizontally and support the wedge on a machine vice on the bed?

Miles

07/05/2020 13:32:27

I've already soaked mine in penetrating oil and hit the drawbar as hard as I feel comfortable doing. I was worried about damaging the bearings. Will try with the wedge set and a clamp.

Miles

07/05/2020 13:18:58

Hi Steve,

Timely bump. Just about to start working on mine again.

Just received the No. 6 chuck removal wedge set which I ordered from the U.S. on Monday!

Any one have advice on using these to extract a very tight MT2 arbor?

Miles

Thread: Problems with NVR switch
15/02/2019 11:34:38
Thanks Les. Yes, I really should mark the phase wires!

Regards,
Miles
15/02/2019 09:27:33
Les,
The light is connected to L1 and L2 input terminals. Because L2 is the ghost phase from the converter, I guess it only becomes active when the motor is running. I'll changeover the light connection from L2 to L3.
Regards,
Miles
15/02/2019 08:46:41

Hi David,

Thanks. Good idea, I'll try that.

Kind regards,

Miles

15/02/2019 08:22:21

Les, Emgee,

The light runs on 24V. There is a 12.5V/25V transformer in the light switch box. With the present wiring, the light does work, but only when the machine is running!

Regards,

Miles

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Edited By Miles Hellon on 15/02/2019 08:23:23

Edited By Miles Hellon on 15/02/2019 08:23:45

Edited By Miles Hellon on 15/02/2019 08:27:56

14/02/2019 21:13:51

Emgee,

Haven't tried the light yet. No bulb for it. But I know what to do if it doesn't work

Thanks,

Miles

14/02/2019 21:08:48

Thanks Emgee, that was indeed the key...... In fact there were/are two faults! The first was that when I swapped the converter outputs to change motor rotation direction I connected either L1 or L3 to the L2 input terminal in the NVR switch. The second fault is that the start button only works if it's pressed in a certain way! You need to press on the right side of the button. If you press on the left or middle of the button, nothing happens! It was this combination of needing specific phase connections and behaviour of the start button that was so confusing!

Thanks to you all for your help with this.

Regards,

Miles

14/02/2019 20:23:59

Thanks Emgee,

The Transwave instructions do say "ensure to swap L1 and L3 output from the converter to reverse motor direction" I need to check that L1, L2, L3 outputs correspond to L1, L2, L3 inputs on the NVR.... I'm used to all three being interchangeable.....

Regards,

Miles

14/02/2019 19:52:37

Thanks Les,

I tried increasing the trip current setting (round knob). That did nothing so I returned it to the nearest setting above the rating of the motor current (1.26 A). Can't see anything to reset there.. The resistance across the solenoid coil is 2.45 kOhms. It appears to be connected across L1, L3. Can't see any safety interlock switches. Not sure how to test the stop button....

Regards,

Miles

14/02/2019 18:11:59

Hi Brian,

That's the output to the machine light. You can see the edge of the light switch casing to the right of the NVR switch.

Regards,

Miles

14/02/2019 17:43:16

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