Design #50 -- This is really nice; however, we think this looks to much like a car tach. Perhaps a technique used on some of the other design would make it more motorcycle-like.
Designs #50, #65, & #66 -- Each offer elements we like. We like the tach needle in #50 and the more modern interpretation of a tachmeter as shown in #65 and #66 - although showing the redline of the tach is a nice touch. We like how you represent "EUROPEAN MOTORCYCLES" and the black line in #66. Perhaps try "OF WESTERN OREGON" in red text without a box may be worth a try.