Graham Horne Square Fours

[allan.walker]

Could anyone please tell me if Graham Horne ever converted a standard, single downtube-type Square Four frame to swinging arm rear suspension? I know he modified s/a (or prf if you prefer) frames to accept Square Four engines and gearboxes, but did he ever fit a s/a rear subframe etc. to the front cradle of a standard Square Four frame?
A friend has been offered a Square Four with a single downtube, s/a rear frame and the owner has made certain claims about it......

Thanks!

[Roger Gwynn]

I have never heard of such a conversion by Graham, doesn't mean to say that he didn't. Dave Pitt is the man most likely to know as 'our man in the Midlands'

[Vincent.vanGinneke]

This is one.....

and one in a Triumph frame

99f4f4d3-dfe7-40fc-89cb-dce11d2c0eb0-atlg.jpg (239.91 KiB) Viewed 381 times

[allan.walker]

Thanks for the replies, gentlemen. It turns out that the bike in question has a twin downtube frame and the owner had Graham Horne build it for him.
Mystery solved!

[Paul_Linden]

Is there a way to identify a Graham Horne square four frame? Did he put his mark on them?

[allan.walker]

Good question! Someone must know....