Jim....
You bring up a very good point.
Some tend to think of loop legs being parallel in only one plane, when it is necessary to have them close to parallel in ALL planes.
I think your method would serve to make this clear.
Thanks !
Gordy
From: "homesforall" <homesforall@xxxxxxxxxxxx>
To: "Gordon Hill" <hillshead@xxxxxxx>
CC: "Floyd Franke" <ephemera@xxxxxxx>
Subject: Parallel loops demo
Date: Mon, 29 Aug 2005 13:28:56 -0400
Gordy,
Last winter I spent a few hours with Floyd Franke and when we were discussing how to demonstrate parallel loops we never came up with a great way to show the tracking error (out of plane). It has been bothering me ever since and I may have a good suggestion. I used it in my Masters test.
We all draw with our lines on the ground ?tight, open and tails are easy to show, but the out of plane is hard to demonstrate.
Let me know what you think of this:
First separate the rod tip from the rod.
Second ask a student or examiner to hold the line (the loop) with 1 or 2 hands (for larger loop)
Instructor holds the rod tip (controls the bottom or rod leg) and the top or fly leg.
Now it is easy to demo all including out of plane, the student gets an accurate picture and is involved in the demo, easier learning and entire class gets more interested.
Also gives the ability to show parallel and out of parallel in other than the vertical or pure horizontal plane (eg 45 deg if top and bottom are in the same plane they are parallel)
Probably could also work in the stroke rotation error.
Student involvement is a carry over from ski instructing and they always seem more interested when involved.
Jim Valle (MCI)