Man, there just isn't a whole lot of useful info out there, more confusing than anything.
http://www.pva-ppe.org.uk/standards.htm#1
http://www.webbikeworld.com/Motorcycle-clothing/motorcycle-clothing-safety-standards.htm
Abrasion test from Cycle Sept 1988
Reprint from a
Sept 88 "Cycle" magazine article "Abrasion Testing: Torn in the USA".
Drag Test
"For the Drag Test, samples were stitched to a bag that held a 75-pound
sandbag inside a milk crate, then dragged behind a pickup truck..."
New, 100% Cotton Denim Jeans ----------------------- 3' 10"
Senior Balistic Nylon ----------------------------------- 3' 10"
Leather, Lightweight, Nude Finish, 2.25 oz/sq. ft. --- 4' 3"
Leather, Fashion Weight, 1.75 oz/sq ft. ------------- 4' 4"
Two-year-old 100% Cotton Denim Jeans ------------ 4' 5"
Cordura Nylon Type 440 ----------------------------- 18' 3"
Kevlar 29 Aramid Fiber, Style 713 ------------------ 22' 1"
Leather, Competition Weight, 3 oz/sq. ft. -------- 86' 0"
Taber Test
"For the Taber Test, the specimen was mounted on a rotating platform and
scuffed by two rubber-emery grinding wheels." The numbers represent the
number of revolutions until the fabric totally fails. A vacuum clears
debris.
Two-year-old 100% Cotton Denim Jeans 168
New 100% Cotton Denim Jeans 225
Kevlar 29 Aramid Fiber, Style 713 506
Cordura Nylon, Type 440 559
Leather, Lightweight, Nude Finish, 2.25 oz./sq. ft. 564
Leather, Fashion Weight, 1.75 oz./sq. ft. 750
Senior Ballistic Nylon 817
Leather, Competition Weight, 3 oz./sq. ft. 2600
More to consider...
"Finally, protection from road abrasion cannot be guaranteed by a
materials abrasion resistance alone. A jacket may have panels of
highly abrasion-resistant materials, yet if low-quality stitching joins
those panels and the seams come apart upon impact or during a slide, then
the abrasion resistance of the panels could count for nothing.
Furthermore, an ill-fitting garment may ride up in a slide, contorting
the body and exposing the skin. And the best jacket in the world, left
unzipped and/or unsnapped, won't give riders the protection they pay
for. When it comes to safety, the issues are more complex than just the
abrasion resistance of materials."
MCN apparently had some back in 2000 "Hambleton, Sarah, 2000. Crash Protection Performance: A Scientific Comparison of Leather and Synthetic Riding Suit Materials."
But I couldn't find any info on waxed cotton.
oh well, back to your regularly scheduled programming..