Barry Harvey of Harvey Titanium (I would have to drive by, I drove by recently and it was still there but the name might have migrated) in Santa Monica might know if there were any others, the only one I ever saw was Skarin's. If you can find an old 1974 or so issue of Competitive Cycling or the newsprint version of Velonews, one of them would have an image of Skarin on his.
Campagnolo cranks, superlight pedals, Teledyne BB spindle and bolts, 3ttt bars & stem (get the SL bars). Ron used numerous wheels, low spoke count units when riding a medal stake pursuit.
Oh, yeah and he used an analog dialed computer, (namebrand escapes me) when racing the Nationals at Northbrook in 1974, pretty advanced, hall effect sensors for speed and cadence. The officials could not find anything in the rule book to not let him use it... They were avail. Just before or just after, for the price of like $200. Ron used to use an old huret cable fed speedo for training prior to that.
Don't remember the fork for sure, I did remember that the graphics for it were similar but not the same as what was used on the production road frames, and more fragile. The frame also had more of a brushed finish.
I may have an email address for Ron in another computer.
Palos Verdes Ca