This is listed as an evening race, so CCS racers might have time to check this out.

New Smyrna Speedway, Friday, Oct. 18, 6 to 8 p.m.
Sons of Speed is a motorcycle race inspired by early 20th-century board-track racing. Featuring stripped-down bikes with pre-1925 American V-Twin engines, Sons of Speed hearkens back to a wide-open, full-throttle, thrilling style of motorcycle racing. Founded by veteran motorcycle builder Billy Lane of Discovery Channel's Biker Build-Off and Monster Garage, the Sons of Speed race will feature some of the sport's most accomplished riders, builders, and enthusiasts  at New Smyrna Speedway's half-mile, paved, banked racetrack.            

Some photos from "Sons of Speed" March 2017.
No clutch, no nuetral.  So the push them up to the top of turn 4 and roll down to get them started

Old Harley Davidson.    I have no idea what year.

close up

Their are clearly modern-manufactured parts on these bikes.  But it appears everything is period-correct.

more closeups

more closeups

Well, maybe your bike has pressurized oil to lube your overhead cams.  But sometimes it just takes grease on the valve gear.

wonder what the tires cost for these bikes....
lessee.... 2+1/4 inch is about 57 mm  .....   what size front tire do you run on your R6 ?  RS250?

Not me.  (My cameras are a little bit newer.)