Member postings for Martin Newbold

Have just connected it and powered it up and it makes a reasonable humming noise not connected to motor. Next step is to clean it up a bit

This has a fused metal box switch on the front it runs up to 4hp through three switches .

Am clueless what the rod does in theright back as it rides up and down. Looksa lile a solenoid in black  I havent powered it up yet as was wondering what that bit was for.

Sure please send me a pdf as interested. My friend has a 7hp version which he has used in a big work shop without problems and it runs his machinary ok .So just wondered if this would do same?

Edited By Martin Newbold on 02/08/2017 18:23:26

Hi i have been given a converter and from what it seems it quite old but in good heart. Does anyone know anything about these , please?

I still need a metric dial and gib plate but Myford Ltd are to busy in thier work shop to make gib plates at present

Ta andy have been busy with my ml7 conversion. Its great and everying can be retro fited back to the original

Edited By Martin Newbold on 17/07/2017 19:49:24

Does anyone have a casting for one of these please? Its from a Drummond M

The spindle ad electrics is here there is no centrigugal switch:

Hi everyone and thank you for your comments. There is no centrafugal switch in this motor at all just a temperature switch which was between the two coils. The coils that are left read a good impedance and seem to be good .

Frances am unsure what insulation there was there between the coils but am aware of nomex being used in other rewinds. In addition some people on youtube are reusing motor wire in motrs and other application quite successfully so I am unsure why you state it wont be reliable

Les there is an instruction booket in the switch I brought . You have told me on two occasions that there is a centrifulgal switch which there is none. further more you said "You just seem to swap wires around hoping that it will work." . When did this happen ? Further more if i have a lack of electrical knowlege it may be because no one else here has any either, as no one chose at the time to point out anything was wrong with my wiring. You started this rant without even looking at the circuit diagrams I posted so I do not know why you are being offensive . When you dont know me. I thought ths forum was here to help people.

Read up about the labours of Sisyphus before you start rewinding that motor? can you provide a link please?

Have finished removing the wiring which ws burnt and broken from the motor. It still needs cleaning up and I need to locate a source for the nomex paper does any one have any experiance of this . I note they make two types sticky and non sticky. Is there a benefit in using either type?

Edited By Martin Newbold on 09/05/2017 21:44:45

As this motor was beyond economic repair at a specialist i was quoted £300.00 I have started tearing it down as the only blackened coils where the 4 set and not the larger set . I have worked out each slot hold 70 wires a piece . I am unsure how to turn a metric measurement to a wire guage. Two of the coils of 70 wires are longer than the outside ones.

I started teasing the wires apart slowely with a small electrical screwdriver . With theseseperated I could cut through the middle of the coils with a wire cutter . The scew driver was then hammered along the slot of the melted mylor this removed it from the slot so the wire strands could be pulled through with some waterpump pliers . The condition of the motor without these wires seems good . I am unsure if I can put it back but the utube fella in india made it look easy so will attempt try and get parts. It will be a learning experiance anyway.

Ah its called nomex paper

Are these coils usually insulated by .3mm mylor card or thicker?

Hi Everyone have done a little more cleaning at one end in an atte,pt to understand what is here I still dont know if these wires in these colls are wired in series does anyone know?

Whill start on other end and see what that is like

Hi Les, I would never buy chinese motors again. The crap one was as you indicated which tried to electrocute me despite wire , inverter and motor being sold by one crap firm I have lost in all confidence with that .

I rang two companies and found out rewind would cost £300 I have opened up kitty motor it has no centrifugal switch. I have watched two videos on youtube with a man rewiring a large motor It is interesting how they took it apart . I stripped mine right down and have started digging at the black windings. It is evident that they only run in four coils I presume in series. I have noted two breaks in the copper wire that runs in these inside the outer larger windings . I am unsure which is the start windings the red and black are on the larger windings which occupy the majority of slots in the field coil windings.

I also note that there was no insulator apparant between the coils i dont know why this is perhaps it was a cheap motor.

Edited By Martin Newbold on 03/05/2017 19:30:19

I would have expected your system to be like the myford with two brass pinch pieces that hold the barrel in place usually taking the top brass securing part out, lets this all come out

Les,

I have asked, and posted images see above see above in relation to connecting this unit we are on page 4.

I think the problem lays in the kitty motor not being completely reversible having a pulley on each end was really a give -away in hindsight. If you look at the picture I posted you will see it burnt the thinner windings not the thicker ones everything was good in one direction until I tried to reverse. Thinking about it I left it running in forward some time whilst I was clearing up a workshop and all was good in this direction. I have now disconnected it all and am looking for someone to supply a non-chinese motor in my area that they will connect up with my wire and switch. I presume a rewind is no longer possible or available at an economic price?

M

Edited By Martin Newbold on 02/05/2017 17:45:27

Hi all am staying away from 3 phase the stuff i brought was crap and from a crap company. the trouble with my kitty motor was the wires were not id'ed and even an expert would have possibly blown it . I am looking at these are they with roller bearings and reversable . With regard to NVR I have earth leakage and trips right town through to shed

https://www.machinemart.co.uk/p/1-5hp-single-phase-4-pole-motor/?da=1&TC=GS-010210434&gclid=CJa26oDEz9MCFQmdGwodZiAMEQ

Thanks for looking

M

Well my motor is fubar .Its a complete waste of money and none of this tech works . Have brought 3 phase kit and inverter none that worked and was electrifying tried to electricute me rubbish company wuld not put it right .

I brought this kitty motor worked fine and just wanted to relocate switch wired it up as it made sense worked fine for 5 mins before I connected it up on the bench in reverse and foward . I put it in lathe and it ran another 5 mins it started smoking then shorted out power righ through to the house. . Just believe its an utter waste of time and none of this works.

Having sorted out the earthing problem. I have one direction travel on the forward control but no reverse this turns of motor when leaver is in reverse. I presume this is another wiring issue as it was a reversable motor on old switch , one of electrical  people here solved that for me.

Am hoping they can again

M

Edited By Martin Newbold on 26/04/2017 15:29:39

cany anyone who is an electrical genius help please?