Tech Article

THE DJM FORD DREAM BEAM

We take a close look at how it's made: how it's installed and how it works...

Story and photos by Marshall Spiegel

DJM Dream Beams

Many model years ago, back when we were all younger, the "in" word was that Ford trucks were a serious pain to lower effectively. It was all about FoMoCo's "I" beam suspension. Undaunted, inventive manufacturers of aftermarket suspension components confronted the challenge. Like most suspension kit manufacturers engineering lowering components for Ford trucks, DJM Suspension of Gardena, CA, approached the challenge by creating a lowering beam to replace the stock Ford beam. According to DJM "Those old lowering beams we made seemed to be strong enough and they did lower those Ford trucks, but they had some major quality issues. No matter what we did in the manufacturing process, no two beams were exactly the same. Frankly, the tolerances weren't acceptable to us. The public called those pieces "I" beams because they looked like the stock Ford components. But they weren't anything like the original Ford beams. The stock Ford beam is forged in one piece with no welds. When we tried to copy the shape of Ford's beam by welding beam sections together, we created some serious problems. There was no way to control the warping of the flat pieces we used to make up the beam shape. "We even tried stitch welding," continues Jeff, "to keep the heat down, but it didn't help. We still had huge inconsistencies in the finished parts. The problem was so bad that we couldn't even check finished parts in our inspection fixture. Installers in those days had to tear a truck apart; hopefully get the "I" beam bolted in and then they didn't really know if the part was good until they got the truck to the alignment shop. After a short run of those parts, we scraped the design." After several DJM beams were installed and in service, additional flaws in those early beams were discovered. Although the design appeared to be strong, close examination indicated that DJM's fabricated "I" beam would twist and was far too flexible laterally. Obviously, that is why Ford's stock beam is forged. To work correctly, the beam must be rigid at the spindle for the vehicle to stay in alignment and drive properly. "We found the simple answer back at the drawing board," says Jeff, "tubing. We found that it won't twist like the old "I" beam and , with the right size and thickness, it proved to be plenty strong along its entire length. However, we questioned whether we could hold good enough tolerance for our ultimate goal, a part that fits every time. "Our first part through the manufacturing process with the new design," continues Jeff happily, "fit our inspection fixture perfectly. So did every subsequent part we manufactured from then on. Over time, we have continued development on our tubular beam to make it even more accurate and stronger. It has proven to truly be a 'Dream' Beam. We've had our Dream Beams in service for seven years now and we're proud to report that those who know the product-technicians, engineers, installers, consumers, and the auto press-- love it. They have proven to be strong, accurate, dependable and relatively easy to install." Below are some photos of a completed installation. The parts we installed on a 2000 F350 Super Duty. This installation was fairly simple. It basically involves removing the factory beam and installing the DJM dream beam. All factory parts are reused. DJM recommends the use of the factory coils on all their beams to retain factory ride and alignment. Installers should inspect the ball joints for wear and replace if necessary. After installation have the front end aligned to factory specs. Our F350 was very close, 1 degree negative on the driver and 1.5 degrees on the passenger. The alignment shop replaced the factory eccentrics in the upper ball joint receiver to correct the alignment.

DJM's Dream Beams
Components
Here are the raw components used in the construction of the DJM Dream Beam.

A look at the raw material, 1018 1-1/2 solid round used at the pivot ends and .219 wall DOM tubing to connect them to the spindle assembly.

The tolerance between the outside of the solid stock and the inside of the tubing is tight. This makes for a strong accurate part

Another view of the how parts fit.

This is how the part looks after welding

Finished Beam

Factory spindles bolt to the Dream Beams just like stock. The alignment bushings from the factory beams are used until the alignment is done.

Factory spring, sway bar and radius arms are used and attached with the factory hardware.

Here is the radius arms pictured from the rear.

Passenger side spindle.

Passenger side sway bar, coil and radius arm.

Passenger side radius arm viewed from the rear.

 

The photo above shows the inner pivot mounts. Again this uses all factory mounting and hardware.

Let's take a look at how the Dream Beam is made. DJM usually makes about 100 sets at a time. The first step is to cut the materials to size. The DOM tubing gets cut to length as well as the solid stock.
A computer controlled plasma cutter is used for making flat pieces. This machine can make one to hundreds of parts identically.
Once all the parts are ready, they go to the welding department. All of DJM beams are tack welded in fixtures to retain stringent quality control .Above is one of DJM's certified welders at work.
After the welding process is complete the parts are inspected to insure accuracy. Next the parts are cleaned before getting a powder coat finish. DJM beams, like all their parts are painted hammer tone grey.
When the part we were building was completed, we decided to test how strong they really are. This test was performed in DJM 60,000 ton press break
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