Paul, I expanded the notch in the S-beam to provide .062 clearance.
This required removing .4375 in from the front flange and .375 in.
from the back flange.  If shorter bolts (AN7-20) can be  used, the
back flange will  only have to be reduced .125 in.  I have ordered a
set which I can test tomorrow.

Jerry Hey

Now we need a picture of the installed reinforcements.

Paul Lamar

No problem if they are just two strips as shown.  I have .125 x .5
304 SS strips on hand.  Will they do?   Jerry


I have heard that welding SS to 4130 is not a problem but
it sounds scary to me. I would be more comfortable with
4130 strips and the right rod.

BTW If you static test this with the front tire of the truck
that would be great. Place the beam with the slot up.

Build a fixture out of 3 inch angle to apply the load to
just the bolts. Don't let the fixture touch the reinforcing strips.


Paul Lamar

No problem at all welding 304 SS to 4130 using 309 SS rod.  In fact
using 309 rod to weld 4130 to itself produces a beautiful weld that
is tougher in high vibration situations than using standard TIG  rods
such as ER70S2.   I will do mine and do the static load test.  It
will take a few more days.

Mark,   Expanding the notch on the S-beam as shown takes about ten
minutes in the mill and/or it would be easy to grind or cut depending
on your equipment. Feel free to  contact me directly at
jerryhey@earthlink.net.  I will help in any way I can.      Jerry



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