Posted by Red Mist on February 02, 2010 at 07:17:59 from (67.142.130.25):
In Reply to: NF wedge-plate posted by Leo S on January 30, 2010 at 11:10:23:
rustyfarmall said:
Mike, you and I are in total agreement on this issue. That wedge has GOT to be installed with the narrow edge toward the front to produce "POSITIVE" caster.[/quote]
It seems that way initially, Rusty, but I am not so sure about that. Look at those two diagrams again in the article you attached. See the vertical dotted lines showing the axis center vs. the contact area? They are the same in both examples as far as their relationship to each other...... I'm not ruling Jim's position out; just that it's hard for me to envision the shopping cart front wheel having positive caster. But, I think he's right - darn it!
Maybe the wedges were designed NOT to stabilize steering, but to ease steering effort on tractors without power steering. mike
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