I called my Dexter distributor this morning and changed the weight rating on the axle I ordered to 3000 lbs. (which was what was stamped on the original Henschen axle for my 65 Caravel). Thanks to Andy from Inland RV for explaining the domino theory of stiffer axle = more frame stress = more headaches. The irony is that Andy helped me order a competitors axle. He also took the opportunity to point out his alternative to people who don't want the trouble and responsibility of ordering an axle.
The advantage of using the original brand as a replacement, is that you can have a starting angle of 35 degrees, have 12 inch brakes if you wish, and not have to worry about any fitting problems, or under/over rated axles.
While costs are important, it is not everything to many owners, especially when they must assume "all" the risks of errors, since they are providing the specs, as opposed to just providing the trailer serial number, that assures them of a perfect fit.
So for you 65 Caravel
owners, here are my final axle order specs:
Dexter "Torflex Axle"
#10 torsion axle 3000lb. cambered (slightly curved)
74.5" Hub face to Hub face.
57.7/8" Outside bracket to Outside bracket.
Reverse orientation, side mount, low profile, brackets.
22.5 degrees down, trailing arm.
Grease bearings (not EZ-lube or oil)
5 lugs on 4.5" centers.
I am planning on cutting the vertical shock mounts off of the old trailing arms and welding them to the new axle and buying new shocks.
I'll post again if anything "interesting" comes up during the installation process.