[Shop-talk] electric trailer jacks

[john niolon]

did my first real trailer trip this past weekend and was generally pleased but 
found several things I need to address.  I can't seem to find the info I'm 
looking for easily.

first... the rig is
2008 Suburban 5.3 L  4 speed auto  with 3.73 axle and 
20" tires
towing package installed stock from factory
GCWR is rated at 13,000   (from the manual)
Stated max trailer weight is 7,000 (from manual)

trailer is a 18' Anderson car hauler  weighing 2,400
Load is a 53 F-100 weighing 3,840  with the engine end ahead
of the first axle...  (truck front end weight is 2300 per the county scales)
total trailer load 6,240

I did the bathroom scale tongue weight thingy and got

575 # without my wife's mobility scooter mounted in front off the truck
715 #  WITH                 " 
                          "                    "                          "

I think I'm within acceptable tongue weight range either way.   But defer to wiser minds

I have a manual tongue jack that's tired and want to switch to electric (for ease and to sake of my shoulders  brand recommendations ??

also  how is the rating of the jacks calculated... is it just the tongue weight or do I need to calculate some part of the load ahead of the axle too?

I-59, I-24, I-75, I-40  is a collection of bad paving, dips, humps, potholes that resemble shallow wells  and made driving a puckering experience
especially for a trailering noob.  Kept my speed under 60 mph and on good roads it was fine but as the condition of roads deteriorated I experienced
a little wander and fishtailing that I could correct but in metro traffic it increased pucker factor by 50-70%

Add that to the lookey-lous that want to eyeball my truck as they drift over closer than they should... and it seemed like NASCAR rubbin is racing time.

Love to hear recommendations on  electric jack ratings , and other wise advise to make next trip more safe and enjoyable..  I know you guys have a
well spring of knowledge you can pour over me.

thanks
John
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