Forum Discussion

Sitting_Bull's avatar
Sitting_Bull
Explorer II
Feb 12, 2015

Need info on COG for a camper on a trailer.

Hey guys, A couple of questions if I may please. I am entertaining the possibility of putting my truck camper on a pull behind car hauler trailer. My intention is to finish it all and enclose it so that it is appealing . My wife loves our camper layout and would not find the same in a TT. Plus we do not want to go into debt for a TT .
1) What are your opinions and experiences with this?
2) What size trailer would you recommend? I have a 10' camper for a long box.
3) My camper indicates where the centre of gravity is and on my truck, and it is slightly ahead of the rear axle. If I put the camper on a tandem axle trailed, where should that COG line be? In front of both axles? In between both axles?
4) Any web sites where I could see what guys have done with their units?
Thanks for your help and feel free to comment on anything.
  • Have you thought about a small goose neck trailer that would turn the cab over of the TC into a "bed over"? This would make a mini fifth wheel that would be very maneuverable.
  • RoyB's avatar
    RoyB
    Explorer II
    I always thought this google images photo was a neat looking arrangement of putting the TC shell on the back of a trailer.

    Lots of space to build-in cabinets for more storage space accessible from the outside...


    After all said and done I guess maybe a TT with more living space inside would be better to get???

    Roy Ken
  • 1. I've seen some really sweet looking TC's on a trailer rigs that were well thought out and I've seen some that were simply tied down on a trailer with small nylon straps.

    2. Car haulers generally come in a 7k GVWR with two 3500 lb axles. The 16' I had weighed 1800 lbs and had around 5200 lb payload.
    Or a 10k GVWR trailer with two 5.2k axles. My 18 footer weighs 2520 lbs which leaves around 7400-7500 lbs for its payload.
    Or a 14k GVWR with two 7k axles. These trailers can weigh around 3500 -3700 lbs.
    Your campers weight plus the other "fixin's" your going to add will determine how much trailer you need.

    3. You will need about 10-13 percent of the trailers gross for a hitch weight. You may know where the COG on the TC is but other "fixins" you add will change that. I wouldn't tie the TC down permanently till you get the right hitch weight on the trailer.

    4. I would try a google for you tubes and how to do it. Good luck
  • I use to make car haulers using discarded house trailer axles. Something like that with a pickup bed on it would be a great match for what you're talking about. The COG should give you a pin weight between 10% and 20% of the total weight on the trailer. I would tend to err on the heavier side because I've seen some serious issues from locating the CG too far aft.