Quote:
Originally Posted by freebeard
... personally I'd go with Polymetal [or equivalent] or 1/8" sheet ABS. Polymetal is stiffer, but ABS can be heat-formed and cemented.
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Polymetal! Of course. I had forgotten. I am going to start with just the spoiler, which has just one very mild curvature. Not making the side plate yet, probably, and its the part needing more bending. The rigidity of polymetal will be perfect.
Quote:
Originally Posted by freebeard
Bonneville spoiler is subjected to low pressure on the bottom, just as a diverter is subjected to high pressure on the top. Use turnbuckles with magnets on the end. ...
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Turnbuckles are perfect.
Quote:
Originally Posted by Vman455
I'm not sure you'll be able to calculate that to any degree of certainty without some data. Do you have a Magnahelic or any other type of pressure gauge?
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No gauges. There is no formula for an reasonable estimate? This aint a race car... seems like an estimate should be good enough if I build something twice as strong as estimated need and be fine, no?