Quote:
Originally Posted by RobertSmalls
...Interestingly, the bumper rebar is already at the end of a three foot long "diving board" of aluminium honeycomb, so a three foot extension would make a six foot cantilevered beam....
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You are correct, but when looking at the Uni-body construction under the car, one can also make out lots of sheet metal around the "center" beam, which makes this incredible in strength, much more than just a beam by itself. No need to calculate the moment of inertia here (Z-section if you like math).
Quote:
Originally Posted by RobertSmalls
...To add rigidity to it, I will make a few triangles between it and the strong location just above your center lumber, where Honda has provided three threaded holes in strong sheet metal....
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I was looking at those three fasteners as well, and will use some small aluminum L-brackets to tie those points to the lumber.
Quote:
Originally Posted by RobertSmalls
....I am anxiously awaiting the completion of an Insight tail extension, whether Jim's meticulous work in fiberglass, Jim E's cardboard prototype, or my own coroplast + Al tail....
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I would just like to wrap things up before the weather gets real cold, just like last year with the under-body panels.
Quote:
Originally Posted by RobertSmalls
...What kind of fuel economy is an Insight really capable of?...
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Well I don't know for sure, but I think that over 100 mpg is possible with my turtle driving style. How about you guys? Any guesses?
Jim.