The rules state that the Cheney clamps do not have the screwdriver slot cut through and a round head. My Cheneys, and they are clearly stamped as such, have round heads but the slots are cut through. What's wrong with the rule?
Submitted by SW03-09811 on Fri, 01/05/2007 - 17:20
The JCNA Rule Book Chapter VI, page 19, Note e. states:
"e. Hose Clamps: Hose clamps must match the original including the material, the finish, the configuration of the adjustable band, and the shape and style of the adjusting screw head. All pre-1971 hose clamps should have round head, straight-slot adjusting screws; their adjusting bands should be grooved, not perforated. (Hex-headed clamp adjusting screws did not appear until Series III E-types and their contemporary XJ6s (~1971)). Brand name is not judged. Clamp bands must be the appropriate length (size) for the application; clamps with MORE than approximately one inch of the band showing beyond the adjusting screw will receive a non-authentic deduction."
I believe you may be concerned over the wrong part of the clamp. It's the adjusting band screw-thread grooves that should not be cut through, not the edges of the screwdriver slot.
I hope this helps.
Dick