Replacing/obtaining motor Supressors - Knowledge me up!

[Tech12]

Nicely done, glad it worked out OK. The original style closed end splices are available from eBay at quite good prices, sometimes makes things easier than a standard butt connector.

[beko1987]

I need to get some of those, had a few instances now where they would have been handy. I did get the old ends off by squeezing them open, but they werent re-useable sadly.

I have a vac in bits now that I could do with 3 for, wont get any in time though.

[Tech12]

If you have a TLC electrical store near you, they used to sell them in singles. When do you need them for ?.

[MVacs]

Just a random comment.......



Crimped connectors? 

My domestic spark tells me they are [insert EU babble and some numbers here] approved, and he could use them in our house to join wires. I said, "not really mate" and flirted David up from the shop with a soldering iron and some heat shrink (which 'modern' sparks don't carry any more it seems).

On 12v stuff maybe (we used to use scotch-locks after all back in the day), but on mains, I would much rather use solder and heat shrink.

The investment is about a tenner, a score if you are being decadent, the learning curve less than 30 mins, its worth learning for rock solid mega-safe connections for the next decade or two. 

Tech12 might tell me I am out of date - I dunno - but I wouldn't be happy sending a machine out with crimps on it, even if I had crimped them myself and were happy they were quite safe. Solder and heat shrink - to me - seems like leagues above.

Once you see the satisfaction that a nicely soldered and heat shrunk joint brings, you will never go back. You will be flashing stranded wire with solder to wire plugs even.

[beko1987]

You know what, I'm learning so much from this forum! Coming round to the 'removing supressors is bad' theory, and evidently my selection of connecting stuff isnt tip top.

OK, class this as a 'quick test to make sure it works', and I'll have a look at getting some of these connectors (they would be handy tbh, most modern toss is wired up with these).

Good job I'm not in a rush to sell it! Anyones gran need a lightweight vac that will outlast a DC24?

[beko1987]

I'll still start the rebuild thread though, the pictures are cluttering up my phone!

[Tech12]

No mate, your not totally wrong. But a properly crimped joint made with good quality connectors is perfectly safe for mains voltage & should last a long time, maybe not as long as a well soldered connection but for a good many years.

How often do you see the crimped connectors on say a Dyson motor or switch fail ?.

Your right it is easy to learn to solder & done properly soldering makes an excellent connection, the problem being:  A seriously large amount of the people that learn to solder don't do a good enough job of it & the connections they make are not safe at 12v DC never mind Mains AC.

There's also a train of thought nowadays that soldering a cable connection can make it too brittle & prone to failure, a lot of car manufacturers will only allow crimped joints now for accessory fitting.

When you think about crimped joints on mains cables: Underground joint boxes use crimped connectors to join High or Low voltage, High current carrying cables. Compared to the amount of them installed in a pretty harsh environment, very few of them fail.

Your Sparks is Dead right: Very few Electricians nowadays carry a soldering iron, it would just sit in the van gathering dust. I've got one in my kit but the only time it comes out on site is to repair a pcb or re-solder a dry joint.

Stu: Your out of date     (Sorry couldn't resist it ) .

[beko1987]

You say that, years ago when I still lived with Mum a joint blew up on the supply cables running up their road. When the emergency team got it all dug up and accessed a few hours later, it had taken out one of their massive joins, blew it right apart. There were some other wires running alongside it, and a few had a (bigger admittidly) join on using these and sealant. The cables attached to them blew apart but the connectors were charred but clinging on still!

[Tech12]

Yep it does happen, but is more often than not due to other influences not a bad crimp.

[beko1987]

These cables were for something else they said, just happened to be running past the big join that blew. Took them 7 hours to dig it out, re-connect and clean it up and get the manhole cover back down!

[Tech12]

Once you see the satisfaction that a nicely soldered and heat shrunk joint brings, you will never go back. You will be flashing stranded wire with solder to wire plugs even.

Sorry mate: Soldering wire connections to plugs, Can't agree with you on that one. It's been proven that it creates an instant higher resistance connection.  When you tighten a screw on to a soldered wire, because the solder is soft it tends to migrate away from the point of contact with the screw & over time this will get worse. If you notice: Manufacturers don't solder the wire end in their plugs anymore or when they leave prepared connection ends, they use hard crimped ferrules. It costs them more in the short term but it's safer in the long term.

I used to tin the ends on wires myself before fitting plugs, but gave up doing it years ago due to the bad connection problem.

[MVacs]

Stu: Your out of date     (Sorry couldn't resist it ) .

I am going to go back to using KitKat tinfoil on fuses now. 

[Tech12]

Stu: Your out of date     (Sorry couldn't resist it ) .

I am going to go back to using KitKat tinfoil on fuses now. 

Come on mate, didn't you know that went out with the ark ? we use a bit of 2.5 nowadays, or if you really want to be posh. A cut down 6" nail works well 

[MVacs]

A cut down 6" nail works well 

We used to use those to get some juice to refurb houses when the electric was off. 

[Tech12]

I was lucky on those sort of jobs, I always had a selection of DNO service head fuses & carriers. So it was just plug & play