Many truck camper newbies are dismayed when they stick old "TC" on the back of their truck when the old pickemup "Squats to rise." What happened? A lot of weight on the back of the old truck can be almost more than the poor beast is ready to cope with. What's to be done? Provided the truck is rated to carry the actual load, and the trouble is more a matter of redistributing the weight, there are several approaches that may be workable. What's often required is "beefing up" the rear suspension system.
Air bag suspensions are nice: The simple press of a button in the cab operates a small, truck-mounted air compressor that adds or releases air from the "bags" to match the load weight. The drawback? Expensive! A typical set of airbags for a Ford F-250 pickup can set you back $250, and you'll wind up tossing in another $250 for the air compressor system. If you can install them yourself, great, if not, there's always the additional cost of labor.
You could trade out your standard shocks for load adjustable "air shocks." A far less expensive approach, the drawback here is that if the load is great, air shocks won't cut it. Back in our early truck camper days where we toted a tiny slide in camper on our faithful old Datsun pickup, air shocks were great. We didn't use an onboard compressor, but simply used a service station air line, or our battery operated tire inflator. Our latest slide-in rig, however, a 3,000 pound behemoth, simply laughs at our air shocks. No amount pumping will move that truck bed up even a hair's breadth.
Another solution we used on an earlier truck and camper combination was that of overload springs. These "add on" leaf springs installed over the top of the factory springs gave the "give" needed for the job at hand. Not as expensive as air bags, but most decidedly heavier, the lift was just enough. Trouble was, even though they were touted as "load adjustable," meaning they supposedly "kicked in" as the load increased, they stiffened up the ride so bad when the camper was off the truck that your back (and backside) felt like you'd spent too many dollars on the bull-riding machine at the corner honky-tonk.
When we broke down and bought yet another truck camper (that gives us three RVs in our fleet now), we knew the air shocks wouldn't cut it, and didn't want to wear out the chiropractor's welcome mat by using overload springs. We were just about ready to give in to airbags when, woopsy! an Internet search brought us a whole new wave: Timbren SES. The SES stands for suspension enhancement system. Timbren is a Canadian firm that's been in the business of manufacturing hollow rubber springs for decades.
One of the beauties of the Timbren system is its simplicity. No hole drilling, no air line routing. For us it was jacking up the truck, removing two existing rubber "bump stops," and bolting in the two Timbren suspension springs. These stiff rubber springs bolt onto the frame and sit above the axle.
With the big camper on the bed of the truck, prior to installing the Timbren system, we measured 9" of clearance from the bottom of the bumper to the ground. After installation, we reloaded the camper and re-measured: 16" inches of clearance now greeted the tape measure. That's a whale of a lot of lift for a couple of little rubber donuts. But the proof is in another food group, as they say, "in the puddin."
Road testing showed a great improvement in several areas. Of course, it was much nicer looking down the road, instead of above the horizon line. On bumpy routes and when braking, the problem of porposing was eliminated. Side sway was greatly reduced, and corner tilting--a favorite white-knuckle activity of the navigator--became a nonevent. All the way around, stability was beefed up, and those "top heavy blues" had their volume turned way down.
We also took the loaded rig out into the back country for a little spin around the desert. Bumps and rip-rap steadied out, and it became a pleasure to be behind the wheel. All in all, the whole effect was one of control.
How about cost? If you check out the Timbren web site, they'll direct you to a nearby dealer. Of course, a web search will also locate Internet sales outfits. One we checked out, Stagel Brothers, listed our F-250 kit for $155 with shipping included free. Compare that to about $500 for airbags and a compressor and the math says you've got plenty of cash left over to spend on those other food groups. Check out Timbren SES on the web at www.timbren.com, or call Toll-Free: (800) 263-3113 or (905) 683-5991