Thread: R3 20" rule
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Unread 18-02-2014, 10:29
jvriezen jvriezen is offline
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Re: R3 20" rule

The technique I saw being used for checking this at the LaCrosse WI week 0 event may be helpful.

Hold a plumb bob* so that it touches the furthest reaching (or suspect) point of the extension. If the horizontal distance from the string to the frame perimeter (where the bumpers attach) is > 20" you have a problem.

The plumb bob is also useful to assure that the starting configuration is legal and that everything is inside the frame perimeter

* a free hanging weight attached to a string to produce a vertical line
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John Vriezen
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