While most of these are not technically real Board Track Racers but mere replicas and some of them are just bicycles. Description from chicosgarage.wordpress.com. I searched for this on bing.com/images
1914 Indian single cylinder 500 cc
Rugged Motorized Bicycles
‘79 Honda CBN400 - Ed Turner Motorcycles
‘79 Honda CBN400 – Ed Turner Motorcycles | Pipeburn.com
i love this bike.
How To Build A Scrambler
Scrambler motorcycle: Jack Pine
LM5. Incredible--like a cross between a light-weight motorcycle and a whippet.