Originally Posted by auchencrow

Thanks, T-Mar, for the info on the meaning of "Sprint" wheels - (I did not know that).

BTW - According to at least one local person, the rules were a tad more lax in the 70's: To wit:

"When the velodrome wasn't being used as a track for bikes the locals took it upon themselves to use the track for their drag racing.
You could even see the skid marks on the track from these cars.
One time during a training session, we heard a police car chase. Low and behold if we didn't see the guy running from the police come running up, over and through our track to escape the police.
If it weren't for us riding on the track, I'm sure the cops would've driven onto the velodrome without much hesitation."