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Discussion on Hydraulic Jack
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Member:
3rsatsmf
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Posted on Thursday, Jan 23, 2003 - 4:39 pm:
I want to put a hydraulic jack on my new custom trailer (not a retrofit). I want to just stand there, turn a key and smile! (no more grunting when I'm jacking it up...) My trailer dealer mentioned heavy duty wiring and a battery for the hydraulic jack, but I don't understand what he is talking about. What are the advantages for the heavy duty stuff? I assume the battery capacity will be increased, but what does the wiring have to do with it? Does it have less resistance than normal wiring so you get more power through it and not drain your battery so much? Or does it allow more current through it from the truck battery so the jack battery stays more fully charged?
Thanks,
Joni
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Moderator:
DrO
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Posted on Friday, Jan 24, 2003 - 8:33 am:
I think he is referring to the fact that the motor for the jack requires considerable current and therefore, heavier wiring. Insufficient wire diameter is not an issue of draining the battery quicker but one of excessive heating of the wire and delivering sufficient power to the jack motor and yes the reason is less resistance in thicker wire.
DrO
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Member:
3rsatsmf
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Posted on Saturday, Jan 25, 2003 - 5:59 pm:
Thank you Dr. O. You were right. What they do is very similiar to the set up that tow trucks have. They run an extra connection directly from the truck to the jack battery, with the heavier wire so the jack battery charges more quickly (i.e., less distance driven) They splice it in at each end of the 7-pin harness connection.
Anyone out there need any more details, let me know!
Thanks again,
Joni
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