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Senin, 31 Oktober 2016

El Toro Trailer Updated

You probably dont remember but a while back, I did a posting on kayak trailers that could be towed behind a bicycle.  The tow bar on that one broke.  The fundamental problem on that one was that it was made out of a fairly skinny piece of redwood that just wasnt strong enough.  This time I used oak.  Oak is stronger but the bar sticking out from the trailer is still about 8 foot long and so it flexes quite a bit.  When youre pedaling, the rhythmic motion of the pedaling sets up a back and forth oscillation of the trailer which is not only annoying but also slows down progress.
There it is with an El Toro loaded up for a test run. The length of the tow bar might seem extreme, but it has to be long enough to tow 20 foot (7m) kayaks.
I knew how to fix the oscillation problem which is by adding some cross braces in the form of a triangle, the universal stable polygon. But due to lack of ambition, I never got around to it.  But since the tow bar broke and I had all the tools out to replace it, it was time to add the bracing as well.  Mission Accomplished! as George Bush would say.
margin-right: auto; text-align: center;">And the view from the rear.  The El Toro, an invention of the Richmond Yacht Club is 8 foot long and 4 foot wide.
Tow bar triangulated with two side braces for lateral stability.
And the link from the tow bar to the bicycle.  I should shorten that. Next time.

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