I thought that there had been a definitive answer to the question of the intended rear spacing and freewheel for a portacatena device on the list some time ago. A search of the archives failed to bring up anything definite but I don't have Chuck's skills as a burrower of archives.
I'd like to set up my portacatena dropout-equipped Holdsworth Professional and could use some advice. A 6-spd fwl on a 126 spaced hub clearly does not have the necessary clearance. 6-spd fwl and 128 OLN, 5-spd fwl and 126 OLN, ..?
Thanks, Charlie "hoping that 130mm OLN is not the answer" Young Honeybrook, PA