[VAC] new participant and axles

[Warren Little <wlittle@xxxxxxxxx>]

In my conversation with Andy a few weeks ago I was told that my axle had
a travel of 36 deg. and a hang angle of 22 1/2 deg. I therefore
calculated the maximum up ange to be 13.5 deg. With these numbers,
operating the trailer with a operating load angle of plus 5 deg. seems
reasonable to me as explained in my first submission to the list.

Knowing the maximum up angle is the key to making a good decision.
Loading the axle so that it bottoms out in order to measure the maximum
up angle does not seem feasible to do with the axle in place. I guess
the axle could be removed and tested with an hydraulic press. Hopefully
Andy and Henschen will be able to carefully check the original specs.

Andy mentioned that when the trailer hits a bump the weight of the
trailer momentarily increases. That is not correct. The mass of the
trailer together with the parameters of the springs, tires and shocks
form a dynamic system that has a response that is well understood. The
shocks play a significant role in determining the dynamic response
including the maximum displacement of the wheel.

I did not say that I intended to operate my trailer with low air
pressure in the tires but I did say that I intend to operate it at the
lowest tire pressure that will not cause excessive heat build up in the
tires. Some tire experts state that this is how tires should be
inflated. I have an infrared point and click temperature sensor that
will be good for measuring the tire temperature.

Warren Little #9302
76 Sovereign