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Truck Camper Reviews

Happijac 4800-HD Jack Install and Report

Happijac Engineer, Gary Scothem, flew-out to the Mid-Atlantic Truck Camper Rally to host a seminar and install a set of Happijac 4800-HD jacks for an install story, and review.


The stars lined up and I had one of those big ideas that I later wonder if I should have kept to myself.  I was on the phone with Aaron Rasmussen, Happijac Company’s General Manager, talking about their Happijac 4800-HD jacks.  I was giving him a hard time because (a) he didn’t tell me about the 4800-HD jacks, (b) he didn’t tell me about the 4800-HD jacks, and (c) he didn’t tell me about the 4800-HD jacks.  We had learned about these new jacks from Greg Tucknies at Adventurer Manufacturing, who later got a TCM Gold Star for his assistance.

In the middle of giving Aaron a hard-time, I got the idea that we could have Happijac send us a set of their new 4800-HD jacks for an installation and article.  Surely we could find an aging multi-slide truck camper for the install.  But who did we know who had an older multi-slide that needed upgraded jacks, and might be actually willing to let us perform the operation?

I know, the Goodes!  Carl and Kay Goode are two familiar and friendly faces for anyone who has been to the East Coast rallies over the past seven or so years.  They happen to have a beautiful 2008 Okanagan 117DBL double-slide, the very camper design that launched a thousand sofa-slide truck campers.  For the record, no camper sofa has beaten the comfort of the camper sofa in the Okanagan 117DBL.  If you have the opportunity, sit in one.  Just please ask first.  Breaking, entering, and sofa sitting is not something we condone.

Despite my giving him trouble, Aaron liked my idea and sent four Happijac 4800-HD camper jacks to Tall Pines Harbor Campground in Sanford, Virginia, home of the Mid-Atlantic Truck Camper Rally.  Aaron also committed Happijac Engineer, Gary Scothem, to fly out and help us install the jacks (sorry Gary).  Gary was instrumental in the design of the 4800-HD.  He has also been with Happijac since it was two guys in a garage.

We later called Carl and Kay and told them the good news.  They reacted as if they had won the lottery.  As we already knew, their 2008 Okanagan 117DBL was in clear need of a higher capacity jack system.

Happijac 4800-HD Facts and Figures

With a 2,800 pound ANSI load rating, the Happijac 4800-HD was specifically developed for the weight of multi-slide truck campers.


Above: The self-lubricating bronze nut utilized in the Happijac 4800-HD

To achieve the higher load rating, the 4800-HD utilizes a self-lubricating bronze nut, larger Torrington thrust bearings, and is three inches longer than Happijacs other camper jacks.


Above: The larger Torrington thrust bearing from the Happijac 4800-HD

The new Acme screw-based design eliminated the need for roll pins and brake plates to increase the reliability of the jack and allow the jack to be fully disassembled in-the-field for service and maintenance.


Above: The inner leg of the Happijac 4800-HD showing one of the screw holes that allows the jack to be disassembled in-the-field for service

The 36-inches of lift offered by the 4800-HD also give the jacks a lower starting point lifting a truck camper higher for more clearance when loading and unloading.


Above: The outer and inner legs of the 4800-HD are zinc plated.  The outer leg is then powder coated for durability

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