Technical 3w Larry’s suicide front axle

Mechanical Engineer, Automotive Engineer, ASE Certified Master Mechanic, autonomous vehicle control systems engineer for the worlds 5th largest automaker.

You?

 

Use GOOD old FORD PARTS ! We lost a nice 3Window with aftermarket parts. Bob

 

There has been about a friggin' billion discussions about this same shit.....there has also been about a billion suicide front ends in about every manifestation that could ever be thought of.......it ain't never been about old iron properly done- failing.....If one of them front ends comes apart it's cause it wasn't done in a manner that was remotely sound from a common sense perspective. Like every other part of this game, the attempts , the discoveries, the failures.....all part of the fabric that makes the whole deal what it is........so beat er' ta death....again......and again. Springs and shocks that work right are your friends. Location points properly installed are your friends ......It don't matter where you hang that axle.

 

Is it coincidental that at the same time this thread is up, there is a separate thread with a guy looking for forged spring perches because the perch he bought from So Cal broke. Good thing it was a standard spring over axle arrangement with the perch mounted vertical.

 

Here's the thread I've mentioned twice now. This link is to page 8 of the thread, where @HotRodWorks did some static stress analysis. You can see how by placing the perch horizontal rather than vertical the stresses on the part are multiplied by several times. Just an FYI, word for the wise. Read the whole thread.
https://www.jalopyjournal.com/forum/threads/oh-nooo-32-wreck.1078515/page-8

 

Here is where I’m at with the 3w Larry style front suspension.
I will have cross steering with a Vega box instead of side steering with a franklin box like Larry’s

 

Tony whatever happened on your 38 COE.?..that was a cool project!!

 

Just a small update on my 32 frame:
I will be using original 32 ford perches with the shock ball removed and tapered leafs with a reverse eye main (to be installed on final assembly). I also ended up pitching the front rails 4”, plus Vega cross steering and pan-hard bar.

 

65standard.....it appears you have a good supply of resources available for your builds! The work on your frame looks great.

Lynn