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Re: Spindle size and thread alien to manual

 

开云体育

Hi Carvel,

?

Of course, these measurements are for the earlier METRIC version of the Maximat 7.? My 1967 IMPERIAL version of the Maximat 7 also had the smaller bore and an MT-2 socket, but has a spindle thread diameter of 1.5 inches by 8 TPI.?

?

Jerry F.

?

From: [email protected] [mailto:[email protected]] On Behalf Of cwlathes via groups.io
Sent: Thursday, May 01, 2025 1:19 PM
To: [email protected]
Subject: Re: [emcoV10lathe] Spindle size and thread alien to manual

?

Hi Ricky

Up until November 1968 the Emcomat / Maximat 7 had a spindle thread of M33x3.5mm and a 16mm bore with MT-2 socket

This was subsequently changed to match the ones on the V10/P range

Regards,

Carvel

?

From: [email protected] [mailto:[email protected]] On Behalf Of teamricky.m via groups.io
Sent: Thursday, May 1, 2025 8:36 PM
To: [email protected]
Subject: [emcoV10lathe] Spindle size and thread alien to manual

?

Hello again gents ;)

?

Im not having much luck but enjoy a challenge!?

for some reason my spindle has a thread major diameter of 33mm…..

?

un clear on thread pitch !

?

has anyone else discovered a difference in size vs the manual?

?

Ricky
Re: Spindle size and thread alien to manual

 

Thanks for the info :)
?
The lathe is a proper classic ! I have managed to find a good back plate which I need for a four jaw chuck …
?
sone of the ones out there say fir wood but they still look pretty good strength wise but I have asked the sellers if it’s ok for my application, Hopefully problem solved !
?
bonus here is the mill and geadstock share the same 2MT so I can interchange the relevant accessories….
?
Ricky
?
Re: Spindle size and thread alien to manual

 

开云体育

Hi Ricky

Up until November 1968 the Emcomat / Maximat 7 had a spindle thread of M33x3.5mm and a 16mm bore with MT-2 socket

This was subsequently changed to match the ones on the V10/P range

Regards,

Carvel

?

From: [email protected] [mailto:[email protected]] On Behalf Of teamricky.m via groups.io
Sent: Thursday, May 1, 2025 8:36 PM
To: [email protected]
Subject: [emcoV10lathe] Spindle size and thread alien to manual

?

Hello again gents ;)

?

Im not having much luck but enjoy a challenge!?

for some reason my spindle has a thread major diameter of 33mm…..

?

un clear on thread pitch !

?

has anyone else discovered a difference in size vs the manual?

?

Ricky
Spindle size and thread alien to manual

 

Hello again gents ;)
?
Im not having much luck but enjoy a challenge!?

for some reason my spindle has a thread major diameter of 33mm…..
?
un clear on thread pitch !
?
has anyone else discovered a difference in size vs the manual?
?
Ricky
Re: Maximat 7 mill head motor question

 

Hi Rikcky thank you i will have look ,regards Roman

I did add a photo album call mill wiring?
?
in there is a picture of the motor plate I have if that helps ?
?
my capacitor is 8uf 400v

confirmed to be correct spec :)
?
Ricky
Re: Dro

 

Re: Maximat 7 mill head motor issues

 

开云体育





Hi Dan?

Please send your info so we can compare/ confirm with what we have?

Many thanks?

Carvel?

-------- Original message --------
From: "Dan B via groups.io" <molliemixer@...>
Date: 2025/04/30 15:06 (GMT+02:00)
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues

Carvel, I checked my US motor and find no markings regarding the capacitor. However, I don't know if this will help (due to my being ill versed in electronics); but, I can get photos of the markings on the capacitor for my Maximat 7, if desired.
?
DanB USA
Re: Dro

 

开云体育

I added a 3-axis DRO many years ago and I could not imagine having to go back to the manual dials. In fact, the z-axis died on me so I ordered a replacement computer (I kept the original glass scales and just matched the model of the DRO) and literally just installed it on Saturday. The original install took a while with quite a few custom fabricated brackets, but it was absolutely worth it IMO. The model I got was the GCS900-3D. The original one I got from ebay, but the replacement one I got from Aliexpress (). They’re cheap Chinese quality, but the computer lasted me for almost a decade and the scales are still perfect.

?

Here’s a blog with some Youtube videos I did way back when to document it. Hope this helps

?

?

Chris

Eastern Canada

?

From: [email protected] <[email protected]> On Behalf Of teamricky.m via groups.io
Sent: Wednesday, April 30, 2025 11:56 AM
To: [email protected]
Subject: [emcoV10lathe] Dro

?

May well have been covered but …..

?

what’s the opinions here on adding a Dro and which one ?

?

I have a small proxxon which I added a Dro to the carriage and simply used a good Dti behind the cross slide as a when needed , It works well especially for the milling attachment side of things …

?

Probably something better and easier to use would be good for a bigger lathe :)

?

Ricky
Dro

 

May well have been covered but …..
?
what’s the opinions here on adding a Dro and which one ?
?
I have a small proxxon which I added a Dro to the carriage and simply used a good Dti behind the cross slide as a when needed , It works well especially for the milling attachment side of things …
?
Probably something better and easier to use would be good for a bigger lathe :)
?
Ricky
Re: Maximat 7 mill head motor question

 

I did add a photo album call mill wiring?
?
in there is a picture of the motor plate I have if that helps ?
?
my capacitor is 8uf 400v

confirmed to be correct spec :)
?
Ricky
Re: Maximat 7 mill head motor issues

 

Carvel, I checked my US motor and find no markings regarding the capacitor. However, I don't know if this will help (due to my being ill versed in electronics); but, I can get photos of the markings on the capacitor for my Maximat 7, if desired.
?
DanB USA
Re: Maximat 7 mill head motor issues

 

开云体育

Morning Vedran and colleagues

In this case this is a 240V 50Hz UK motor which is a 3 phase motor adapted for use on one phase with a capacitor

So it doesn’t have any capacitor value on the name plate as the Cap is not normally applicable

?

The US 60Hz motor is a two winding split phase motor so it might well be marked but I don’t have sight of one so maybe one of our US members can advise ?

The manual does come to our rescue though with 8uF for the UK 240V 50Hz motor and 20uF for the US 115V 60Hz motor ?

Regards,

?

Carvel

?

From: [email protected] [mailto:[email protected]] On Behalf Of Vedran via groups.io
Sent: Wednesday, April 30, 2025 4:23 AM
To: [email protected]
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues

?

Single phase motors Emco used tend to have required capacitance printed on the nameplate so you can check that as well. One of the 4 wires should definitely be ground. If neither of the 4 has a continuity to the motor housing it was not rewired properly.

?

Regards

?

Vedran

?

?

On Tue, Apr 29, 2025 at 10:07?PM cwlathes via <carvelw=[email protected]> wrote:

Hi Rick

( and by the way please sign your posts so we know who you are ? )

If you look at the wiring diagram you will notice that this is actually a small 3 phase motor which is used on single phase by permanently supplying the 3rd phase via a capacitor to simulate the phase shift? . . .? so yes the Cap is permanently in circuit

Being basically 3 phase it lends itself to be being fed by a small vfd without the Cap , in which case apart from the variable speed it develops an additional 20% of power compared to the capacitor configuration

Regards,

Carvel

?

From: [email protected] [mailto:[email protected]] On Behalf Of teamricky.m via
Sent: Tuesday, April 29, 2025 9:56 PM
To: [email protected]
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues

?

Ok cool :)

?

since I can’t see a centrifugal switch I’m guessing the design is for a running capacitor only,?

?

It won’t hurt to put a new one on and hopefully the company looking at the ?motor return it quickly!
Re: Maximat 7 mill head motor issues

 

Single phase motors Emco used tend to have required capacitance printed on the nameplate so you can check that as well. One of the 4 wires should definitely be ground. If neither of the 4 has a continuity to the motor housing it was not rewired properly.

Regards

Vedran


On Tue, Apr 29, 2025 at 10:07?PM cwlathes via <carvelw=[email protected]> wrote:

Hi Rick

( and by the way please sign your posts so we know who you are ? )

If you look at the wiring diagram you will notice that this is actually a small 3 phase motor which is used on single phase by permanently supplying the 3rd phase via a capacitor to simulate the phase shift? . . .? so yes the Cap is permanently in circuit

Being basically 3 phase it lends itself to be being fed by a small vfd without the Cap , in which case apart from the variable speed it develops an additional 20% of power compared to the capacitor configuration

Regards,

Carvel

?

From: [email protected] [mailto:[email protected]] On Behalf Of teamricky.m via
Sent: Tuesday, April 29, 2025 9:56 PM
To: [email protected]
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues

?

Ok cool :)

?

since I can’t see a centrifugal switch I’m guessing the design is for a running capacitor only,?

?

It won’t hurt to put a new one on and hopefully the company looking at the ?motor return it quickly!
Re: Maximat 7 mill head motor issues

 

开云体育

Hi Rick

( and by the way please sign your posts so we know who you are ? )

If you look at the wiring diagram you will notice that this is actually a small 3 phase motor which is used on single phase by permanently supplying the 3rd phase via a capacitor to simulate the phase shift? . . .? so yes the Cap is permanently in circuit

Being basically 3 phase it lends itself to be being fed by a small vfd without the Cap , in which case apart from the variable speed it develops an additional 20% of power compared to the capacitor configuration

Regards,

Carvel

?

From: [email protected] [mailto:[email protected]] On Behalf Of teamricky.m via groups.io
Sent: Tuesday, April 29, 2025 9:56 PM
To: [email protected]
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues

?

Ok cool :)

?

since I can’t see a centrifugal switch I’m guessing the design is for a running capacitor only,?

?

It won’t hurt to put a new one on and hopefully the company looking at the ?motor return it quickly!
Re: Maximat 7 mill head motor issues

 

开云体育

When in doubt look in the manual ?



Regards,

?

Carvel

?

From: [email protected] [mailto:[email protected]] On Behalf Of teamricky.m via groups.io
Sent: Tuesday, April 29, 2025 7:40 PM
To: [email protected]
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues

?

Thank you :)

?

I did select a different range in ohms and got a charge in and out so it’s not totally bad but unknown as you say !

?

I wonder if it’s the correct value at 8 uf

?

seems a bit on the low side, If anyone knows what they have that would be great to compare known working machines ……
Re: Maximat 7 mill head motor issues

 

Ok cool :)
?
since I can’t see a centrifugal switch I’m guessing the design is for a running capacitor only,?
?
It won’t hurt to put a new one on and hopefully the company looking at the ?motor return it quickly!
Re: Maximat 7 mill head motor issues

 

开云体育

1/4 to 1/3 HP motor should do OK with 30-50 microfarad starting caps and with about 6-8 microfarads for a running cap.?

Best Regards,
Andrei

From: [email protected] <[email protected]> on behalf of teamricky.m via groups.io <teamricky.m@...>
Sent: Tuesday, April 29, 2025 1:39 PM
To: [email protected] <[email protected]>
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues
?
Thank you :)
?
I did select a different range in ohms and got a charge in and out so it’s not totally bad but unknown as you say !
?
I wonder if it’s the correct value at 8 uf
?
seems a bit on the low side, If anyone knows what they have that would be great to compare known working machines ……
Re: Maximat 7 mill head motor issues

 

Thank you :)
?
I did select a different range in ohms and got a charge in and out so it’s not totally bad but unknown as you say !
?
I wonder if it’s the correct value at 8 uf
?
seems a bit on the low side, If anyone knows what they have that would be great to compare known working machines ……
Re: Maximat 7 mill head motor issues

 

开云体育

You’ll need a special tester that can test capacitors; a simple continuity test does not accurately show you whether the cap is good or bad. Here’s a quick youtube video giving some more info:

?

?

chris

eastern canada

?

From: [email protected] <[email protected]> On Behalf Of teamricky.m via groups.io
Sent: Tuesday, April 29, 2025 11:57 AM
To: [email protected]
Subject: Re: [emcoV10lathe] Maximat 7 mill head motor issues

?

Thanks chaps :)

?

I am a little clearer on how to proceed…..

?

the capacitor seems to be ‘open’ according to basic testing with my multimeter set to continuity chime/buzz, I don’t seem to be able to get a chirp or any type of reading….

?

the motor is 1 phase

?

the wires joined together are paired due to the cable having one extra core so some one just used it up ! Lol

?

the information on the motor wires posted here is perfect ;) I think I can wire it back in safely.

?

the key on the motor shaft is a very good point as it did fall out when I took the motor off and I remember thinking that’s a tiny part I could have lost !

?

the motor has gone off to be checked out properly just in case there is an underlying problem?

?

Unfortunately the Capacitor has a bit of its markings rubbed off but I think says :

?

8 Uf

?

400v

?

not sure if it is continuous rating but in any case if that spec is correct I can get the motor repair shop to supply a new one :)

?

re the spindle bearings…..Thank goodness they are ok and still tight!
Re: Maximat 7 mill head motor issues

 

Thanks chaps :)
?
I am a little clearer on how to proceed…..
?
the capacitor seems to be ‘open’ according to basic testing with my multimeter set to continuity chime/buzz, I don’t seem to be able to get a chirp or any type of reading….
?
the motor is 1 phase
?
the wires joined together are paired due to the cable having one extra core so some one just used it up ! Lol
?
the information on the motor wires posted here is perfect ;) I think I can wire it back in safely.
?
the key on the motor shaft is a very good point as it did fall out when I took the motor off and I remember thinking that’s a tiny part I could have lost !
?
the motor has gone off to be checked out properly just in case there is an underlying problem?
?
Unfortunately the Capacitor has a bit of its markings rubbed off but I think says :
?
8 Uf
?
400v
?
not sure if it is continuous rating but in any case if that spec is correct I can get the motor repair shop to supply a new one :)
?
re the spindle bearings…..Thank goodness they are ok and still tight!
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