help with cable crimps

[jazzo]

Hi guys, I hope you can help me.

I broke my hoover recently, so I open the socket and after a brief inspection it turned out that the wire, well one of them, has snapped. I resolved to fix it myself, and it's not really difficult but I realized I need so wire crimps, like the ones in the attached picture. I have been to every diy shop in town but noone appears to have them. I tried on the net and again I found some similar to that but not the ones in the picture.

https://i.postimg.cc/yY76Jjwj/crimps.jpg

So, first thing is: can I do without them and insert the cable directly inside the pins (https://i.postimg.cc/XNQm8grQ/plug.jpg)? If not where can I get those crimps, exactly the same ones (I also don't know what size they are)

cheers

 

[Evans Electric]

Were they connecting to the carbon brushes on the com ?           I have no idea where you'd get those to be  honest . 

 

[jazzo]

those go directly inside the pins and then you lock them with the screw. I've found some similar on the internet (see this for example https://www.altecautomotive.co.uk/28mm-male--female-un-insulated-terminals-2169-p.asp)but I have no idea what size they are. Would it be OK to use the wire directly with no crimp and scre it inside the pin directly (second image)?

 

[kerching]

They are not the same...they are spade terminals for loudspeakers by the look of it

 

[SPECIAL LOCATION]

In ye olden days when Maplins was still around you would probably have got something from them.....

Have you checked the various spade terminals on sale at Halfords??

https://www.halfords.com/webapp/wcs/stores/servlet/SearchRouter?langId=-1&storeId=10001&catalogId=10151&action=search&srch=SPADE+TERMINALS

You could probably take yours in to your local Halfords and physically compare the two together...

maybe worth a shot??

:C

 

[Geoff1946]

Local vacuum cleaner repair shop?

 

[jazzo]

Have you checked the various spade terminals on sale at Halfords??

I've tried homebase, local electrics shop and screwfix, not halfords but from what I can see from your link they are all insulated and I need a non insulated one, which was essentially the problem I had with all other shops. I can't believe how difficult it is to order a couple of connectors. Do those connectors I posted in the image have a proper name I can use to search the internet as I have no idea.

Local vacuum cleaner repair shop?

The thing is, it is such a simple thing to fix - providing you get the parts - that I'd ike to fix it myself and save a few quids. Besides, the the local repair shop will have to get the connectors from somewhere? Unless of course you can do without them, insert the cable directly in and apply the screw, which is another option of course, not sure if it is safe though...

 

[Doc Hudson]

What is the problem with the insulated crimps? is it just that the insulation makes it too big? If the terminal itself is the right size why not just remove the insulation. Have you actually done a search for uninsulated spade terminals. Or some may call them blade or crimp terminals.  https://cpc.farnell.com/search?st=uninsulated spade terminals  There is a wide assortment of shapes and sizes available. But some you need to buy in larger quantities that could be a waste if you only need two.  https://www.amazon.co.uk/s/?ie=UTF8&keywords=uninsulated+terminals&tag=mh0a9-21&index=aps&hvadid=8861258866&hvqmt=b&hvbmt=bb&hvdev=c&ref=pd_sl_4avnaelcl9_b

Doc H.

 

[Sharpend]

Could you not use a ferrule crimp then cut insulation off after all you are screwing onto it?? 

https://www.tlc-direct.co.uk/Products/CTPET7575.html?

 

[apprentice87]

The are nothing but ordinary uninsulated bootlace ferrules...

https://www.swaonline.co.uk/cable-terminations/bootlace-ferrules/uninsulated-bootlace-ferrules-

john..

 

[Ardet R]

They are what I would call an uninsulated cord end ferrule with insulation strain relief. (or wire end ferrule in the US)

They are used in production all over the place but seem to be hard to obtain in a retail scenario.

The ferrules you picture also require a specific crimp tool to close them properly and ensure the connection is sound.

apprentice87 has indicated the easiest solution for you, they do not have the insulation strain relief crimp but this is not too critical in this application.

The appropriate crimp tool is easier to get hold of and if pushed these are easier to close with a pair of pliers, not really recommended, but would work better than just terminating the fine stranded cable in the screw terminal. Even though clamping fine stranded in screw terminals is done all over the world all the time it does have a greater chance of overheating the cable and causing connection problems.

 

[jazzo]

thanks for all the great suggestions guys. There's only one thing though, say for example I get a ferrule crimp, how do I know which size I need?

 

[apprentice87]

thanks for all the great suggestions guys. There's only one thing though, say for example I get a ferrule crimp, how do I know which size I need?

You buy a selection box like this..

http://www.bootlaceferrules.co.uk/s20700bu-p540910.html

And a set of crimpers like this;

http://www.bootlaceferrules.co.uk/hand-crimping-tool-p540912.html

And you are sorted..

Must say i like your determination to do it properly. I NEVER terminate fine wire cables without ferrules, the regs require it, but nobody, [apart from me and you, and members of this forum] seem to care much!!

john..

 

[Ardet R]

You would need to know the cross sectional area of the cable you have.

As it is for a vacuum cleaner they are likely to take (unless it is old)  about 4-5 Amps and a 1mm² cable would be OK for that current but the cable is often then a bit physically thin for the manual stress they are subjected to, especially for a two core cable, therefore the cable  might be 1.5mm².

If you do not wish to buy a selection box then the cable should have embossed markings on the side that tell you the csa.

something like the below picture from draka cables

you are looking for something like 2x1.5 i.e. two cores of 1.5mm².

EDIT: oh yes, a 6mm long ferrule should be fine 10mm would be too long for your application.

 

[Phoenix]

So, first thing is: can I do without them and insert the cable directly inside the pins (https://i.postimg.cc/XNQm8grQ/plug.jpg)? If not where can I get those crimps, exactly the same ones (I also don't know what size they are)

cheers

To make sure I've understood the question properly (looking at the url thats not actually a hyperlink)...

Are we talking about the end of the flex with the 13A plug on, and the 'pins' you talk of are the live and neutral pins of the 13A plug? If so, yes, go ahead and terminate the cable as is, just give the ends a slight twist (but do not be tempted to tin them). There is no need for the bootlace ferules, even though the factory prepared flex end did