By continuing to use this site, you agree to our use of cookies. Find out more

Member postings for petro1head

Here is a list of all the postings petro1head has made in our forums. Click on a thread name to jump to the thread.

Thread: Motor protection
04/02/2022 20:39:34
Posted by Mike Poole on 04/02/2022 20:28:02:

Yes, the full load current FLC is usually stated on the motor info. plate. The overload units usually have a current range of a few amps and an adjuster you set to match the FLC of your motor. The basic control is a box with push buttons and a contactor that has an operating coil that is suitable for your supply, for a single phase unit this will be somewhere in the range 220V to 240V typically. When you have your chosen motor then you will know the overload module required for the contactor box. Ideally the contactor and overload unit should be from the same manufacturer as they will fit together neatly.



Probably a stupid question but to use the saw I assumemi will have to push the button on the overload using and the saw at the same time?

04/02/2022 19:49:42
Posted by Mike Poole on 04/02/2022 13:10:06:

**LINK** **LINK**

the two components by IMO would make a starter with NVR function and motor protection overload, you are probably nearer to a Toolstation than you are to a rat these days. IMO are a good quality manufacturer.


This item from WEG is very attractively priced and although WEG are relatively new they are a large company based in Brazil and seem to be generating a good reputation. My personal choice would be the WEG as I feel reasonably comfortable that it would perform satisfactorily and the IMO is the thick end of a hundred quid and may or may not be a better device. The links are examples and you will need to select an overload with the range to cover your motors full load current and adjust to your exact requirement or in the case of the WEG select the unit to suit your motor. The IMO basic unit is for a 240v motor up to 4kW in power and will need the overload selected for your motor current. The WEG unit will need to be a single phase model to suit the motor you have. These are examples of what you are looking for so trawl the internet to see if there is a good deal to be found.


if you have a branch of TLC electrical near you this could be another option, again select a base unit and overload to suit your motor.


Edited By Mike Poole on 04/02/2022 13:16:21

Thanks Mike, so do I choose the overload protection based on the stated amps on the motor?

04/02/2022 10:46:08

Hi Noel

Do you have a link to such a device please

04/02/2022 09:12:13
Posted by Colin Whittaker on 04/02/2022 00:35:10:

I have recently bought a slow start relay from China for a central vacuum cleaner. (The original slow start failed and a direct replacement from Europe was perhaps 10 times the price.)

The reason I say this is that if you want an electrical safety cut off that doesn't trigger under the start up current surge then you could consider installing a slow start relay such as this.

Cheers, Colin

Don't have any understanding of these relays, how would it protect the motor?

03/02/2022 18:00:11

TeC seem to get reputable reviews

they do a 350w motor, same as my friends saw with 14mm shaft for £90 or a 500w with 19mm shaft for £120

Which would be easier, adapting a pully with 16mm hole to 14 or 19mm

Edited By petro1head on 03/02/2022 18:07:15

03/02/2022 11:10:45

I think the confusion is its says pH 1. which is phase not hp. my pal has the same saw and his is 350w

02/02/2022 20:44:08
Posted by Samsaranda on 02/02/2022 19:53:15:

The motor in the photo is labelled as 500 watts, that equates to .75 hp not 1 hp. Dave W

What equation did you use?

02/02/2022 19:07:02

The motor is 1hp

02/02/2022 18:43:39

Motor speed is 1450 shaft size 15.9mm

02/02/2022 17:29:38


However the shaft dia is 16mm

02/02/2022 16:58:04

Not much info on the motor plate


02/02/2022 16:04:41

I have just had a quote for a replacement motor from Clarke £200!!!!

This seems rediculously high

02/02/2022 09:08:11

I have a Clarke 6" band sawthat I use for cutting metal

Last night the blade James and burned the motor out

So I need a new motor however I would like to prevent this happening g again.

Any suggestion what I could do?

And before you say it, yes don't leave it running on its own

Thread: Digital Caliper - again, sorry
12/12/2021 07:17:18

Since I started this thread I thought I would give some feedback on the Caliper I bought, the M-SURE from Amazon

Not sure whats happened to Amazon but currently their delivery time is quick. I ordered the caliper on Friday, selected std free delivery and recd it yesterday.

So, as I mentioned earlier in the thread I went for the M-SURE as it had recd good reviews on the Mig Welding Forum.

The case is very sturdy and well moulded, very similar to the case you get with the Mitutoyo calipers. It comes with one CR2032 Lithium battery which you have to fit and a small tool to get the battery cover off. The cover for the battery has a seal. There is also a data port as well, not tested.

Its auto on when you slide the caliper and auto off however it takes a long time to go off which is good. When off, I press the zero button and then switched it on and it was still at the same measurement so think its actually off and not just a display off so battery life may be good but obviously time will tell. It does advice to remove the battery if the caliper is not going to used for a long period of time. The slide action is smooth, the display is smaller than I would like, the one I got the other day was brill but of course the item faulty

On the paperwork there is a web address, which taked you to a landing page and then to Machine Dro.  Its also looks like they do other models, mine is the MS-220-15- but they also do a MS-222 but the longer one here









Edited By petro1head on 12/12/2021 07:27:26

Edited By petro1head on 12/12/2021 07:32:13

10/12/2021 17:38:53
Posted by not done it yet on 10/12/2021 17:07:54:

Ban good, etc? Often sub-standard stuff and little chance of correction if it is. To be avoided - unless you can afford to throw it away, if it is not to specification.

I would alway choose AliExpress over Bangood

10/12/2021 00:11:48

After reading more complaints about the M&W ones I decided to get some M-Sure ones after reading favourable reviews on the Mig Welding forum.

09/12/2021 23:24:07

So I am looking at the Moore and Write ones and I see Machine Dromis part of Allendale Stores which is a supplier in Amazon. As I now have credit it makes sense to buy from their Amazon store.

However I am confused but these two listing as in the face of it they seem the same mode, but different colours. See here and here, are they the same?

09/12/2021 18:12:51
Posted by DiogenesII on 09/12/2021 17:42:46:

Buy a new Absolute Digimatic for the workshop and relegate the older ones to the garage?

RD Barrett Small Tools - 0-150 mm Mitutoyo Absolute..

As I said in my first post I already have some of those

09/12/2021 18:12:06
Posted by old mart on 09/12/2021 17:12:14:

Petro1head's calipers look very good for the money.

It was nice but when reading some of the lower star reviews they had the same problem as my. After a period of time being off, they would not turn back on again except if you took the battery out and put it back in again

09/12/2021 14:58:59


I came accross this site a few weeks ago, makes interesting reading. In a nutshell buy Zinc + Silver Oxide batteries and not Zinc + Manganese Dioxide

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Support Our Partners
Eccentric July 5 2018
Rapid RC
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest