Last left off with the frame fab, we have done a ton since.
This HAMB thread covers quite a bit of the progress: http://www.jalopyjournal.com/forum/showthread.php?t=404411
This is one of those things that gets overlooked in the details. The aftermarket has come up with some stellar components and some not so stellar. But when you use high volume production parts, your car will look just like everyone elses. This car does use SoCal hair pins and a SoCal forged heavy beam axle but that’s about where it all ends.
This car runs the spring behind the axle, what is commonly known as “suicide” and requires special batwings or hair pins to mount the spring and carry the entire load of the front of the car. Not one to skimp out we cut and machined a nice pair for this car. Our initial mock up was using the supplied SoCal stainless steel pieces. Very nice with a shock mount integrated. Just not the parts we really wanted.
With a way to attach the spring to the axle, we needed to attach the hair pins to the frame. The shape of the frame plus the location gave us a few different options. Most people would weld a tube or bung into the frame to attach a HEIM or bushing to. We opted for stainless steel tie rod ends from So Cal and fabricated this nifty little plate that cancels the angle between the frame and hair pin.
This build has been in the works for a few months now. A 1931 Ford Model A that has made it’s way here from Bakersfield California passing through many promising hands before our customer got it. Now we are working for a classic hot rod look in the lineage of Doane Spencer 1932 Ford Roadster.
Starting off with two lengths of 2X4 inch pickled and oiled box tube, we capped the ends and filled them with packed sand. Using a process called bump bending in a hydraulic press we are able to curve the frame rail sections to conform to the outer profile of the body. Once the basic profiles were created using a simple drawing on the floor we were able to transfer these dimensions into Alibre’, our solid modeling software. This allows me to make design decisions before committing our customers cash in wasted labor. We can also take this data and export it into the CNC plasma to make one off parts for each build.
The center crossmember is fabricated from 1 3/4″ tubing, the frame rails got a series of 2 1/2″ holes on the inside and the rear kick-up is fabricated from 2X3 P&O steel tube. The front spring crossmember is a generic hot rod Model A part. we did several mock ups with the front and rear suspension parts in place to confirm our measurements and to make sure we had the “look” down tight.