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Pat4d Just got MTs
Joined: 20 Feb 2008 Odometer: 156 Location: Stroud, Gloucestershire
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Posted: Tue Nov 16, 2010 4:15 pm Post subject: Jump Leads.
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I am thinking of getting some jump leads from Santa, does anyone have any recomendations?
__________________________________ 1994 Discovery 300TDI
Some bits work others don't. |
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mrcheese Mud Obsessed
Joined: 14 Oct 2003 Odometer: 6339
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Posted: Tue Nov 16, 2010 4:30 pm Post subject:
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Bigger, as in thicker, is better. Try and take a look at the way the cable is crimped into the clamp. Cheap ones can have very poor connections.
This can cause high resistance joints or just plain fall apart.
Now I think about it, I must replace my set.
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Kitesurf Difflock Royalty
Joined: 28 Feb 2005 Odometer: 14197 Location: Luton, Beds
1994 Toyota Surf
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Posted: Tue Nov 16, 2010 4:40 pm Post subject:
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I made my own using welding cable. It is available from electrical wholesalers. It is meant for automated welding machines in factories. The multistranded section of the wire is about 1CM in diameter. Mine have done some serious cranking and never even got warm. The biggest problem is finding decent clamps to go on the ends.
__________________________________ Motorist who drove his 4x4 up Snowdon sentenced to appear on Top Gear. |
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mellowip1983 Winch Assistant
Joined: 21 Oct 2008 Odometer: 98 Location: Wirral
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Posted: Sat Nov 20, 2010 5:20 pm Post subject:
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Yep I made a set out of welding cable too, absoloutly brilliant couldnt get anything that good in the shops[/quote]
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jeepjeep Just got MTs
Joined: 29 Dec 2009 Odometer: 101
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Posted: Sat Nov 20, 2010 7:52 pm Post subject:
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what size cable did you use?
and how long did you make them?
I see on ebay an 800amp rated 6m set uses 12.5mm cable and is £30
Possibly rating is peak in short burst
Would like a decent set but don't want to pay £100's, also don't want the entire boot filled with heavy wire.... whats the best compromise?
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Twiss Mud Obsessed
Joined: 18 Feb 2008 Odometer: 6438 Location: Birkirkara, Malta
1993 Suzuki Samurai
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Posted: Sat Nov 20, 2010 8:32 pm Post subject:
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Phil and mellow, that's a good idea!!!
I've currently got cheapo ones, seem to be alright cranking a suzuki over though!
I bet they would struggle with a big diesel engine!
I like the X-Jump system, seems quite useful, if a little pricey...
http://www.x-eng.co.uk/X-Jump.asp
__________________________________ Twiss
'95 Samurai 416 16v
'92 Maruti Gypsy MG410
www.suzukiclubuk.co.uk |
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spannerman69 Mud Obsessed
Joined: 01 Oct 2003 Odometer: 2807 Location: st.helens
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Posted: Sat Nov 20, 2010 8:54 pm Post subject:
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i made a set up the same as those using battery leads from winch solutions and a pair of clips from the local motor factors , i mounted the snap connector to the front bumper.
__________________________________ member of the dcjc |
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Twiss Mud Obsessed
Joined: 18 Feb 2008 Odometer: 6438 Location: Birkirkara, Malta
1993 Suzuki Samurai
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Posted: Sat Nov 20, 2010 9:02 pm Post subject:
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Sounds good!
I'm glad I've currently got a decent battery and a working alternator!!!
I might rig something up if I start doing stuff for South East 4x4 response!
__________________________________ Twiss
'95 Samurai 416 16v
'92 Maruti Gypsy MG410
www.suzukiclubuk.co.uk |
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Nathaniel Difflock Royalty
Joined: 13 May 2003 Odometer: 17901 Location: North, North Yorkshire
1979 Suzuki LJ
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Posted: Sun Nov 21, 2010 10:36 pm Post subject:
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I have a superb pair of jumpleads, wish I could remember where they came from, really heavy wiring, starts lorries without breaking sweat, and long enough to jump off a vehicle sat on the trailer from the towcars battery!
__________________________________ Nat
If You Open Your Mind Too Much Your Brain Will Fall Out |
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big_patrol Mud Obsessed
Joined: 10 Sep 2006 Odometer: 2620 Location: Rossendale
1998 Nissan patrol
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Posted: Thu Nov 25, 2010 5:42 am Post subject:
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I have the very heavy duty ring ones from a local truck parts place (Hydrair) they are very thick and good quality wire that bends nicely. There are also long as nat says they will start our waggon and reach to the rear mounted battery on my car when I drive to the front of it with another. I reckon 10 feet. think they were £42 and worth every penny. Every time I use them on someone elses car where they're feable ones have failed they have followed suit and bought some.
__________________________________ Everybody welcome to trials club, visit www.ncortc.com every third sunday of the month |
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cornish redneck Mud Obsessed
Joined: 09 Oct 2009 Odometer: 3904 Location: bodmin
1997 Mitsubishi Shogun
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Posted: Thu Nov 25, 2010 9:53 pm Post subject:
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i made a set of jump leads from heavy duty winch cable and bought a set of 4 anderson 50amp plugs off ebay http://shop.ebay.co.uk/items/__anderson+connect...f4=284591_284611, ive got them on front bumper, rear bumper, jump leads and on a small compressor. saves lifting the bonnet and messing around, just plug in and off you go.
__________________________________ Founder of the Difflock Ginger Goatee Club! (which seems to be lost somewhere)
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Twiss Mud Obsessed
Joined: 18 Feb 2008 Odometer: 6438 Location: Birkirkara, Malta
1993 Suzuki Samurai
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Posted: Fri Nov 26, 2010 12:44 am Post subject:
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That sounds like a good jump lead arrangement cornish, i might have to make something similar...
__________________________________ Twiss
'95 Samurai 416 16v
'92 Maruti Gypsy MG410
www.suzukiclubuk.co.uk |
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cornish redneck Mud Obsessed
Joined: 09 Oct 2009 Odometer: 3904 Location: bodmin
1997 Mitsubishi Shogun
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Posted: Sat Nov 27, 2010 1:37 am Post subject:
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it just makes life so much easier twiss, you can use jump leads from the front or the back, which ever suits your needs, on the front i got a heavy duty battery isolator switch that switches the winch on and off and powers up the plug but the back is a permanent supply but needs a switch.
__________________________________ Founder of the Difflock Ginger Goatee Club! (which seems to be lost somewhere)
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leeds Just got MTs
Joined: 08 Jul 2004 Odometer: 244 Location: Leeds
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Posted: Wed Dec 01, 2010 9:34 am Post subject:
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jeepjeep wrote: | what size cable did you use?
and how long did you make them?
I see on ebay an 800amp rated 6m set uses 12.5mm cable and is £30
Possibly rating is peak in short burst
Would like a decent set but don't want to pay £100's, also don't want the entire boot filled with heavy wire.... whats the best compromise? |
800 amp rated?????ROFLMAO
For 850 amp booster rated cable on a 30% duty cycle you would need 95mm2 cable. Weight of jump leads per metre made from this sort of cable would weigh 2 kg/metre!
Battery clips capable of handling 800 amps would be absolutely massive!
Typical 175 amp continuously rated Anderson connectors can only handle 800 amps for about 2 seconds. The 350 amp Anderson connectors are about twice the size of the 175 SB connector. The 175 amp SB connector will not take 95mm2 cable
Have had a quick look on ebay and 800 amp jump leads abound. With outer gauge of 12.5mm. What does that mean? What is the actual cross sectional area of the current carrying wires? What material is the current carrying conductors made from? How many strands/diameter of strands in the current carrying conductors?
What does the 800 amp refer to? Continuous, 30% 2% duty cycle???
Battery clips not fully insulated. Could be fun in a Defender battery box
This is the system I use/make.
35mm2 twin cable (1083 x 0.2 mm copper strands) rated at 500 Amps for 30% duty cycle, clips rated at 300 amps fully insulated. 175 amp continuously rated Anderson connectors.
HTH
Brendan
__________________________________ www.4x4overlander.com
2008 Trip Report Here
Asturias, North Spain 2009 |
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tc1 Winch Assistant
Joined: 24 Sep 2007 Odometer: 71
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Posted: Thu Dec 02, 2010 6:49 am Post subject:
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spannerman69 wrote: | i made a set up the same as those using battery leads from winch solutions and a pair of clips from the local motor factors , i mounted the snap connector to the front bumper. |
Don't forget to fuse/switch the socket for two reasons
1) could get interesting in the event of an accident/impact on the socket
2) The RAC/AA had a spate of little tykes shoving bent rod in to the sockets to knock out security systems and that resulted in a couple of toasted vans
__________________________________ www.theawarecampaign.co.uk
'95 300tdi disco 3door
'94 4.2 lse classic
'93 Rover 820 vittesse sport |
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leeds Just got MTs
Joined: 08 Jul 2004 Odometer: 244 Location: Leeds
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Posted: Thu Dec 02, 2010 11:03 am Post subject:
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tc1 wrote: | spannerman69 wrote: | i made a set up the same as those using battery leads from winch solutions and a pair of clips from the local motor factors , i mounted the snap connector to the front bumper. |
Don't forget to fuse/switch the socket for two reasons
1) could get interesting in the event of an accident/impact on the socket
2) The RAC/AA had a spate of little tykes shoving bent rod in to the sockets to knock out security systems and that resulted in a couple of toasted vans |
Also for external connectors use the rubber dust cover and pvc sleeves. Will not make them waterproof but will help to prevent corrosion, crud building up on the contacts.
HTH
Brendan
__________________________________ www.4x4overlander.com
2008 Trip Report Here
Asturias, North Spain 2009 |
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Wuff_Wider Just got MTs
Joined: 29 Dec 2008 Odometer: 487 Location: Yorkshire
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Posted: Fri Dec 03, 2010 12:57 pm Post subject:
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I've boughty some from Bolt On Bits on e-bay for £45, 5 metres long with an Anderson socket!
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leeds Just got MTs
Joined: 08 Jul 2004 Odometer: 244 Location: Leeds
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Posted: Fri Dec 03, 2010 6:38 pm Post subject:
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Wuff_Wider wrote: | I've boughty some from Bolt On Bits on e-bay for £45, 5 metres long with an Anderson socket! |
The Bolt on Bits one do NOT have an Anderson socket. They use a 'Anderson type' connector and cable is not 35mm2 but 25mm2 cable with 150 amp clips
We use genuine Anderson connectors, twinflex 35mm2 cable and 300 amp clips
Brendan
__________________________________ www.4x4overlander.com
2008 Trip Report Here
Asturias, North Spain 2009 |
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Wuff_Wider Just got MTs
Joined: 29 Dec 2008 Odometer: 487 Location: Yorkshire
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Posted: Fri Dec 03, 2010 9:29 pm Post subject:
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God, why are men always so concerned with size!
Was I bragging? No, all I said was what I'd got, I wasn't stating anything in particular!
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leeds Just got MTs
Joined: 08 Jul 2004 Odometer: 244 Location: Leeds
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Posted: Thu Dec 09, 2010 10:02 am Post subject:
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Actually size does matter!
The current carrying capacity of a cable depends on many factors, one being cross sectional area and the conductivity of the cable!
Just found out that copper cable prices have rocketed! Up about 50% in about 8 months!
No wonder many people are selling aluminium and brass 'jump leads'
Brendan
__________________________________ www.4x4overlander.com
2008 Trip Report Here
Asturias, North Spain 2009 |
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Kitesurf Difflock Royalty
Joined: 28 Feb 2005 Odometer: 14197 Location: Luton, Beds
1994 Toyota Surf
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Posted: Thu Dec 09, 2010 5:54 pm Post subject:
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Yep, size does matter. The current that will flow in a copper conductor is proportional to the cross sectional area of the conductor.
33 * (I/A)^2 * S = log( (Tm - Ta) / (234 + Ta) + 1 )
I = current in Amperes
A = area of wire in circ. mils
S = time the current flows in seconds
Tm = melting point, C
Ta = ambient temp, C
If you do the maths for 25mm conductor wire and 35mm conductor wire you will see the difference.
__________________________________ Motorist who drove his 4x4 up Snowdon sentenced to appear on Top Gear. |
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bertie_bas205 Mud Obsessed
Joined: 06 Jun 2007 Odometer: 4388 Location: ABERDEENSHIRE
1985 Land Rover 90nad
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Posted: Thu Dec 09, 2010 5:56 pm Post subject:
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Kitesurf wrote: | Yep, size does matter. The current that will flow in a copper conductor is proportional to the cross sectional area of the conductor.
33 * (I/A)^2 * S = log( (Tm - Ta) / (234 + Ta) + 1 )
I = current in Amperes
A = area of wire in circ. mils
S = time the current flows in seconds
Tm = melting point, C
Ta = ambient temp, C
If you do the maths for 25mm conductor wire and 35mm conductor wire you will see the difference. |
EH???
Bertie.
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Twiss Mud Obsessed
Joined: 18 Feb 2008 Odometer: 6438 Location: Birkirkara, Malta
1993 Suzuki Samurai
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cornish redneck Mud Obsessed
Joined: 09 Oct 2009 Odometer: 3904 Location: bodmin
1997 Mitsubishi Shogun
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Posted: Sat Dec 11, 2010 12:09 am Post subject:
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thats one way of putting it twiss, keeping it simples
kind of makes sense actually.
__________________________________ Founder of the Difflock Ginger Goatee Club! (which seems to be lost somewhere)
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** GED ** Mud Obsessed
Joined: 18 Jun 2014 Odometer: 2039 Location: Scouser
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Posted: Sat Mar 10, 2018 7:26 pm Post subject:
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silly fucker ^^^^^^^^ put "doctor in his occupation!!
yeah......
__________________________________ the other co-founder of the DCJC
Member of TEAM CHAOS |
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Nightbar Difflock Royalty
Joined: 30 Sep 2003 Odometer: 20799 Location: In a state of anticipation...
1999 Land Rover Defender
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Posted: Sat Mar 10, 2018 8:07 pm Post subject:
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I getting annoyed about this ^^^ lol (but you knew that Ged)
__________________________________ The ex-Difflock Ambassador to Naples, Sir Nightbar DCJC DFS and 2 bars.
Plant a tree for the Difflock 3 |
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Xpajun Mud Obsessed
Joined: 22 Sep 2008 Odometer: 3245
1988 Mitsubishi Shogun
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Posted: Sat Mar 10, 2018 10:48 pm Post subject:
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So there isn't a doctorate for spamology?
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