The blue bike was photographed at a show in Florida earlier this year.
The red bike made an appearance at the Clubmans All-British Weekend in California in 2005 and is the one it seems featured in a magazine article in 2010 having found it's way to Australia.
According to the Vintage drag bike thread on the Jockey Journal it may have been put together by the legendary Arno St Denis (actually misnamed but I'm sure that's who is being referred to).
Take a look at Ron's rather fine double engined BSA among the other bikes photographed at the show,Ron is named as the owner of the Blue bike on the Triumph Custom Bikes FB page
Any more info is more than welcome
According to the Vintage drag bike thread on the Jockey Journal it may have been put together by the legendary Arno St Denis (actually misnamed but I'm sure that's who is being referred to).
Take a look at Ron's rather fine double engined BSA among the other bikes photographed at the show,Ron is named as the owner of the Blue bike on the Triumph Custom Bikes FB page
Any more info is more than welcome