10-25mm crimper

[shanky887614]

It gets drawn up by capillary action,

really? ive never seen that on any cables at all, solder covers the outside of the cores not inside so it wouldnt get drawn in

 

[davesparks]

really? ive never seen that on any cables at all, solder covers the outside of the cores not inside so it wouldnt get drawn in

Then you haven't tinned it properly. The solder should flow through all of the strands, not just coat the outside of the bunch.

 

[shanky887614]

Then you haven't tinned it properly. The solder should flow through all of the strands, not just coat the outside of the bunch.

lead-free solder is brittle but i wont touch it.

traditional lead-tin solder with a rosin core is all ill use and doesnt crack like lead-free solder

 

[Megavolt]

what do you guys recommend?

i spotted some 10-50mm crimpers for £50 at my local wholesalers and when i was price matching i can get a set for £14

at that kind of price i dont mind if it is rubbish


the ck 10-25mm ones are £60 and swa £40 at my local wholesalers (21 on tlc)

Got some for the same money from eBay. Total Rubish. Tugs pull off even when crimping on next size down.

 

[shanky887614]

Got some for the same money from eBay. Total Rubish. Tugs pull off even when crimping on next size down.

then it can go back, returns are allowed and im getting it from argos pickup.

ill try it, if it is carp then ill buy the swa set i was originally going to get

 

[pope]

I bought one of those swa ones weren't that impressed.

But the old boy I done my apprenticeship with had one of these crembre ones so I scoured eBay and found one doesn't look flash but you can see and feel it has made a good connection does 6-120mm I think.

I'd recommend a decent second hand one over a cheap new shiny one.

 

[shanky887614]

I bought one of those swa ones weren't that impressed.

But the old boy I done my apprenticeship with had one of these crembre ones so I scoured eBay and found one doesn't look flash but you can see and feel it has made a good connection does 6-120mm I think.

I'd recommend a decent second hand one over a cheap new shiny one.

the ones that go upto 25mm?

one of the guys i did my apprenticeship with used a cheap hydralic one, it had individual dies for each size and you squeezed it all the way, quick check to see if dies were damaged and if they are not then you can tell if there crimped (the guy trained in engineering)

 

[edexlab]

I've seen one of these cheap crimpers on site, guy told us how much it cost, it seemed to do the job ok, but compared to a cembre hydraulic crimper we had on hire the joint strength was definitely not the same, lugs would come off when given a good pull,the cembre crimpers took a lot more strength to do the same,
So if I was you I'd send them back, it's likely they have a quality issue with the cast dies and those out of spec are flogged on ebay.
The cembre lever (back lug)
crimps pictured above would definitely be a better buy, had mine for 10 years nothing to go wrong!, easy to use and reliable!
if I needed hexagonal crimps we always hired them as it wasn't cost effective to buy.

 

[shanky887614]

I've seen one of these cheap crimpers on site, guy told us how much it cost, it seemed to do the job ok, but compared to a cembre hydraulic crimper we had on hire the joint strength was definitely not the same, lugs would come off when given a good pull,the cembre crimpers took a lot more strength to do the same,
So if I was you I'd send them back, it's likely they have a quality issue with the cast dies and those out of spec are flogged on ebay.
The cembre lever (back lug)
crimps pictured above would definitely be a better buy, had mine for 10 years nothing to go wrong!, easy to use and reliable!
if I needed hexagonal crimps we always hired them as it wasn't cost effective to buy.

ive got some 25mm in the garage, ill crimp it and see before i send them back

 

[davesparks]

The mechanical strength is an obvious test, it's the electrical soundness that is harder to test. You need a ductor or similar high current milliohmmeter to test it properly

 

[shanky887614]

The mechanical strength is an obvious test, it's the electrical soundness that is harder to test. You need a ductor or similar high current milliohmmeter to test it properly

if it is mechanically solid all the way around then it will be fine.

the lugs are steel so technically reduce ccc if your being picky.

 

[overskilled]

Most of the lugs I get are tinned copper (look steel but are copper)

 

[davesparks]

if it is mechanically solid all the way around then it will be fine.

the lugs are steel so technically reduce ccc if your being picky.

No it won't, it must be electrically sound as well as mechanically sound!

Where on earth are you getting steel lugs from? Lugs for copper cables should be tinned copper

 

[Andy78]

Yep, all common lugs will be tinned copper.

 

[shanky887614]

Where on earth are you getting steel lugs from? Lugs for copper cables should be tinned copper

they look silver, i just ask for lugs at the wholesaler (never seen any copper on them but thats just on the bigger sizes e.g. 50mm