While I applaud your tenacity and desire to make something substantial yourself, I highly recommend taking some fabrication classes or spending to money to get the right hard-cover.I'm just waiting for the next thread about this where those self-tapping screws rip out of the plastic they are threaded through, this cover flaps around, breaks or outright flies off, creating a hazard for anyone behind you. My intent is not to bash you, but a genuine concern for your safety and the safety of any motorist following you.
Quote:
Originally Posted by kach22i
UPDATE:
I did some test driving today, some observations below.
45 mph:
You can really feel the aero down force, I'd say there is just as much at 45 as there was at 50 mph before.
70 mph:
The truck tracks really good, better than before - likes to stay in a straight line (which is good).
80 mph:
More down force than before, just shy of that feeling that you are towing something, feels very secure for a vehicle which sits so high off the ground.
There is still some buffeting and deflection of the material past the last spar - just before the rear spoiler. However it is 1/8th to 1/4th of what it used to be. I can see that a perfectly rigid top for the bed would be an even greater improvement.
I was seven pounds low in tire air pressure, huge improvement in rolling resistance now.
I was so happy with the results, that I went to the self-serve car wash and gave her a bath.
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