Forum Discussion

languiduck's avatar
languiduck
Explorer
Jul 31, 2014

TC newbie, can I get some input please?

A couple weeks ago we finally brought our new TC home. We used to own an older TT several years ago and didn't like it too much. Mainly because I like to take my Jeep with me for trail riding, etc.
Since then we've spent some time getting used to it, stocking it with supplies, doing a couple short drives and reading tons of threads here which have been very helpful. I already had Roadmaster helper springs on it, but we added a rear Hellwig Big Wig because the body roll was a bit scary.



My main question here is that the COG sticker on the TC is behind the rear axle of my truck. This camper is designed for a short box truck. There's no way I can move it forward any more, because it will hit my tail lights. I have to shim it off the bed with a 2x4. To gain clearance at the cabover, I had to screw 2x6s stacked on top of each other to shim it off the bed 3". I get they have to make a camper one size fits all and this is designed to also probably fit a 1/2 ton truck (which would overload it so that doesn't make any sense to me), and on a 1/2 ton truck the COG would possibly be forward more than it sits on my truck. Any thoughts on this?
The water tank is at the front of the TC so if I filled it that might change things. I'm loading most of the stuff at the front of the camper the best I can. It seems to drive ok, doesn't seem lighter on the front axle. When I set it down, both ends of the truck drop, albeit the rear drops a whole bunch more. I'm thinking since it's a 3/4 ton truck I can get away with it? OR did I just waste several years of saving up?
  • languiduck wrote:
    ... It seems to drive ok, doesn't seem lighter on the front axle. When I set it down, both ends of the truck drop, albeit the rear drops a whole bunch more. I'm thinking since it's a 3/4 ton truck I can get away with it? OR did I just waste several years of saving up?
    When you say "set it down", do you mean load the full weight of the TC on the truck? If yes, I really do not think you have a serious problem. If the front of the truck went up or remained the same, then you would have a problem.

    Typically, the back of most trucks will squat more in the back than front when loaded. Your headlights will be out of adjustment, aiming at the tree tops. I think the most common fix is Air bags. They will allow you to raise the back of the truck to suit your TC load. There are other advantages to the air bags also. The air bags are fully adjustable for different loads, other methods are fixed.

    Typically, when air bags are mentioned, a thread will get bogged down with which is better, add leafs, overload springs, Timbrins, etc. Just keep in mind, the air bags are totally adjustable, and like anything else must be installed and used correctly.

    I am fortunate with the COG marking of my TC. There is none and never was, so obviously it means nothing to me. I have well over 150,000 miles on my setup, with nothing to change.

    Do a Forum search on air bags.

    Wayne
  • If the center of gravity wasn't important it wouldn't be on there. To ignore it would be foolish. It is normally over the axel or up to 12" or so in front of the axel.

    It is wrong to tell you that it's not important... knowing from the picture what you have and reading that you plan to tow a jeep with it's additional tounge weight.

    You picture shows clearly the effect of the COG being behind the axel.

    I would suggest that you visit a good spring shop and get their advice. They are very good at what they do even though the function is akin to a blacksmith shop.

    Don't buy a bunch af suspension add ons until you do... you may not need them... if you add them and end up with another truck they'd be wasted money.

    You will also need to weigh the front and the rear axel of your loaded truck. That information is criticle with your problem

    From appearence... you might have steering and braking problems with the front end being what appears to be that light.

    Weigh any advise you get from a forum carefully... get your rig to a spring shop professional.

    Sleepy
  • I'd start by getting the weight with and without the camper. That will tell you how much weight was added to the front. My COG is very slightly in front of the rear axle if the sticker is to be believed. Fully loaded mine added 490 lbs to the front and 3200 or so the the rear.

    BTW what do you have for a Jeep?

    Ed
  • There is nothing magical about the COG mark being directly over the axle. It is simply a guide. If you know what the max rear axle weight rating is, weigh your rear axle weight at a truck scale and lay all your worries to rest.