Here is my cost data for the wheel skirts:
materials:
braces $8.00 bought two used one, cost is for both
screws $0.50 used some I had, but bought some to refill stock, cost is for ones used
sheet steel 0 free, had it laying around
brackets 0 free, taken off junk stuff
hinges 0 free, taken off junk stuff
Primer $5.00 Used 95% of one can
paint $14.00 bought two 8 oz cans used 1.5
clear coat $5.00 used less than half of can
Total $32.50 (only what was used = $22)
Time:
design time 2
build first bracket 2
build first skirt 2
mount and tweak first skirt 1
paint first one 0.75 (not counting dry time)
build second brace 0.5
build second skirt 1
mount and tweak second skirt 0.5
paint second one 0.75 (not counting dry time)
Total 10.5 hours
Testing:
Time:
planning 0.5
first ABA test 3.5
coast down 1.5
second ABA 2.5
Total 8 hours
Costs for testing:
gas 7 gal
cost $19.00
miles 280
So in total I have about $50 invested in skirts and testing. I also have 18.5 hours invested in making and testing them.
Testing takes a lot longer then I had thought
But good data is nice to have (and share)
Today
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I've been hoping to test again this summer, but so far each weekend has been otherwise occupied. I want the second test done at a different site (less traffic) to compare to the first, and to compare once I get a bellypan, which can't be A-B-A-B tested easily.
