[Vwbeamer]

Ok, so I got some time. I want to explain why I did 40% coverage , instead of 50%. I looked at the original GM patient on the 50% cover. The test were done on a 1982 Chevy, standard cab, with 8 foot bed. I just happen to have a 79 Chevy with a 8 ft long bed. My truck is identical to the test truck in outside dimensions.

My thought the real secret is the ratio of the back of the cab height to the front of the cover. So I measured the cab height on the 79 truck. it about 44 inches. Half of 8 feet is 48 inches. So I used this ratio when designing my cover. Keep in mine my Toyota has an extremely short bed of only 5 feet.

I'm open to saying I could be wrong about this. Only way me to tell is to build a extension on my cover and do more A-B testing.

I also found a test done on a modern pickup, I'm sorry I didn't bookmark it. In that test they actually saw results but only covering last 12 inches of the bed. This was done on a modern crew cab short bed truck.