"How do you remove o-rings from a motor?"
I tried a Lark's Head knot. I found that a well lubed motor would slip out
of the O-ring. It took some care to keep the O-ring on the motor while
handling, until it was under tension.
To tie a Lark's Head, slip a loop of the motor through the O-ring then pull
the other end of the motor through the loop. You can also put the loop
through the ring and pull it around to the other side of the ring, harder to
visualize until you have seen it.
I am not sure what effect a Lark's Head knot will have on the breaking point
of the rubber. It may add to the local stresses.
I was surprised to hear that wiping the lube off before weighing was
allowed, because the rule is quite clear that the lube is included in the weight.
But if dirt gets on the motor, it makes sense to wipe it off. I would think
that to comply with the rules, the motor could be washed and relubed for
weighing. Or weigh it before it has a chance to get dirty.
Gary Hinze
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Received on Mon Mar 26 2007 - 13:38:51 CEST