A lot of the Meriden Triumphs did it for many years. It was standard for the one piece eyebolt clamps in the R models which had one inch bores and used two 1/16" thick shims to clamp the bar up tight.
I installed 7/8" bars on my 83 HD XR1000, too, worked fine.
[ This message was edited by: Mecchanica on 2006-12-11 13:13 ]