[Rhodes22-list] New traveller and shift extender.

[Curtis Ruck]

Graham,

When I worked on my windward traveler on harken track on fiberglass tubing,
I did the calculations for load... at 30 knot winds (estimating for a worst
case gust) estimations had the traveler only putting 450lbs force on my two
backstays.

Though my math was focused on the traveler rail and tubing failure, the
force should be comparable to what is exerted on railing.