Dual Cam Setup
I'm working on setting up a new Reese Dual Cam setup. I think I need a 1" extended ball, and wonder if I would benefit from a 2". Here's are some photos of where I'm at now: Side view, I think...
Forum Discussion
Ron Gratz wrote:
For a large sway angle of, say, 5 degrees, a cam will move about 0.5" longitudinally and, due to the slope of the bar, will lift the bar about 0.25". The added upward force on the bar will be equal to 0.25" times the spring constant. For an 800# bar with a base load of 1000#, the force will increase by 0.25"x200#/inch = 50#. The upward force will increase from 1000# to about 1050#. For a 1200# bar with a base load of 1000#, the force will increase from 1000# to about 1075#.
IMO, the "claim to fame" for the Dual Cam is the fact that the cam/bar friction force is much greater when the TT is trying to swing away from centered than it is when the TT is trying to swing toward centered.
I'm trying to make sure I understand. Your increase from 1000# to about 1075 above is just the chain tension force due the the bar being tensioned more due to an additional 1/4" (fixed typo) distance. This part I understand, it's just like tightening up the chain by 1/4" (fixed typo).
Then when sway occurs, there's some additional (large?) friction force that occurs as the bar tries to climb the 45 degree bend at the end of the bar. This force only occurs during motion (sway or turning) Is that correct?
If yes, then during sway does this friction occur on both sides since for a small angle the spring bar is climbing the cam on both sides?
