Hi Forrest,
If all measures as I envisioned it, the bracket welded to the axle will
position against the bottom of the frame and bolt to the plate welded to the
outside of the frame. The axle can't be positioned higher against the
frame. Dexter give choices of down angle at 22.5, 32, and 45. I originally
choose 22.5 as that's the angle that I believe Henchen used for the original
axle. Just before making a final decision, I moved it to 45, then thought
more about the parking brake and changed the down angle to 32 degrees. The
45 degree down angle won't allow the parking brake to function due to
mechanical interference.
Had to consider lots of issues. Is it a good idea to increase the bearing
weight of the axle? Is it necessary to install shock absorbers? Will
changing the down angle change the ride characteristics of the finished
restoration? It went without question that the larger drums and oval pads
were essential changes. I think Andy at Inland provided answers to some of
these questions. Other's I got from the Owner's and Service Manual.
Finally, lots of input from joining in the Valist over the years.
Dexter has many options for fabrication of the bracket to hold the axle.
I'm sure I made the right choice. The shock mount only comes in one
configuration, take it or leave it, it's positioned "down" rather than "up"
as with the Henchen. There will be a modification the Airstream shock
mount. Possibly a benefit as it's a tight pinch to remove/replace the OEM
shock. The other issues of camber and toe-in I left to Dexter and the
designer's of the axle.
The change in the height of the trailer due to the axle might change the
towing angle. I think I can accommodate this change with a change in the
drawbar drop if necessary. Most likely, the increased height won't change
the inherent stability on the road.
Thanks for adding your experiences to axle replacement. Each bit of
information will help overcome problems encountered with a change like this.
Sure would like to hear from other restorers that have changed their axles
and or are considering making the change. The pre '70 Henchen torsion bar
rubbers is subject to deterioration; whereas, those post '69 last for ever
if not abused? Torsion arms always bouncing on the upper stop must damage
the structure, loosening rivets, damaging appliances, etc. Seems to me that
there is justification for replacement with many of the classics. My '74
Argosy has torsion arms that ride about 5 degrees up angle and the unit has
considerable rivet stress throughout the trailer.
Regards, '69 Safari,
Joy