Rewire Ford Focus
in [Car Maintenance]
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From: Chris Bartram on 28 Jul 2007 17:31 Chris Whelan wrote: > TBH, as far as car wiring repairs are concerned, it's not a problem. A > properly made solder joint, or a properly made crimped one, are more than > capable of outlasting the vehicle. I just take issue with those who crimp > the wrong size of lug on to a cable with a pair of side-cutters or > whatever, and then claim that crimped joints are not suitable for car > applications! > > Chris > And that's the key thing. A properly done joint of either type is good enough. However, to do crimps well, you need a good crimp tool, not the 1.99 one from the car shop. Similarly, if you solder a joint badly and don't protect it, it will break.
From: Guy King on 28 Jul 2007 17:44 The message <YmOqi.6054$By5.115(a)text.news.blueyonder.co.uk> from Chris Bartram <news(a)delete-me.piglet-net.net> contains these words: > The fact is > that if you use the solder as the electrical connection, then take care > of the mechanical issue, you won't have a problem. Proper strain relief is the key to long lived joints in vibrating applications. Crimped or soldered makes no odds, it's the waggling that kills them off. If it's soldered it'll fail where the solder stops and the strands are free to move, if it's crimped it'll fail where the bundle of strand leave the crimp. -- Skipweasel We have always been at war with Iran. [George Orwell - almost]
From: Depresion on 28 Jul 2007 19:38 "Conor" <conor.turton(a)gmail.com> wrote in message news:MPG.2115b612576d2f9298a356(a)news.individual.net... > In article <46ab7564$0$1617$ed2619ec(a)ptn-nntp-reader02.plus.net>, > says... > >> Solder is fine so long as you can keep the joint and surrounding wire >> immobile (say if it runs down the sills), it's not normally the solder >> that >> fails but the wire at the end of the solder. >> > Does nobody here tin the wires before soldering them together? That doesn't help, it just spreads the solder up the wire moving the failure point.
From: BobC on 29 Jul 2007 04:08 On 28 Jul, 22:44, Guy King <guy.k...(a)zetnet.co.uk> wrote: > The message <YmOqi.6054$By5....(a)text.news.blueyonder.co.uk> > from Chris Bartram <n...(a)delete-me.piglet-net.net> contains these words: > > > The fact is > > that if you use the solder as the electrical connection, then take care > > of the mechanical issue, you won't have a problem. > > Proper strain relief is the key to long lived joints in vibrating > applications. Crimped or soldered makes no odds, it's the waggling that > kills them off. If it's soldered it'll fail where the solder stops and > the strands are free to move, if it's crimped it'll fail where the > bundle of strand leave the crimp. > > -- > Skipweasel > We have always been at war with Iran. [George Orwell - almost] At last a sensible answer on this matter. Soldering in theory will always be a better bond. Trouble is, soldering properly requires skill, and I've seen lots of attempts at soldering by people who think it involves throwing some molten tin/lead at a couple of bits of wire and "glueing" them together. Crimping on the other hand de-skills the task. That's why such as wire- wrapping and crimping were developed many years ago, although the reason for use now is mechanisation of manufacture. A soldered joint will always be at least as good as a crimped joint, provided the soldering is done correctly and the crimp produces a proper cold weld. The unreliability then comes in the strain relief... but thats been said. BobC
From: Malc on 29 Jul 2007 04:28
BobC wrote: > > At last a sensible answer on this matter. Soldering in theory will > always be a better bond. Trouble is, soldering properly requires > skill, and I've seen lots of attempts at soldering by people who think > it involves throwing some molten tin/lead at a couple of bits of wire > and "glueing" them together. > Crimping on the other hand de-skills the task. That's why such as > wire- wrapping and crimping were developed many years ago, although > the reason for use now is mechanisation of manufacture. > A soldered joint will always be at least as good as a crimped joint, > provided the soldering is done correctly and the crimp produces a > proper cold weld. > The unreliability then comes in the strain relief... but thats been > said. > When I worked for Westland Aerospace the components like resistors and diodes on PCBs would have loops formed in the legs to help with strain relief. These components were in a carrier inside the input shaft of a helicopter gearbox and were potted too. I didn't see what they did with connectors though, that was done elsewhere. -- Malc If you're swimming in a creek And an eel bites your cheek That's a moray |