Here’s the latest work on the trailer. There are a lot more details I want to add that are not included in the kit, like the brake lines, both for the air over hydraulic system as well as the manual brakes. It’s interesting that there is no provision for these as the kit does include the master cylinder as well as the hydraulic and vacuum booster. So to actually route the lines and hoses, I’ve added a few junction blocks as well as drilled a couple of holes into the backing plates to attach the lines.
I’m also going to add the air lines which will connect to the truck as well as the electrical wiring from the lights in the rear, forward to the junction box and then add the cable to connect to the truck as well.
There are also two safety chains which I’ll add as well in addition to the fittings on the frame where everything is stowed when the trailer isn’t being towed.
The kit does include a lot of the u-bolts for handles and attaching the axle, however these are resin and very thin so I’m replacing all of those with 26 gauge wire which is a bit more substantial.
I have to admit that I got very nostalgic while I was building the suspension. During my time at Ford, I was fortunate enough to have spent 8 years as the design engineer at Ford Light Truck responsible for designing and releasing for production, the entire rear suspension system for all the F-Series and Econoilne vehicles. I was so familiar with all those parts and spent lots of time learning the dynamics and geometry of how a rear leaf spring system works, how to calculate rates and stresses and determine the proper balance to be able to carry the desired load, still have a decent ride and not have too much or too little travel between empty and design load positions. Working on all those parts brought back a lot of fond memories!