You probley wont believe this but-----------Back in 1992 i invented the the cooling flywheel---I started a company called cricket racing products--we made parts for alot of racers in offroad gas. I was the first to design the vented flywheel---the concept was great but the demand was not[]--we also made titanum front braces for the rc10gt gas truck. Richard Saxton ran them on his truck win he won the us gas nationals at the ranch pit shop in cal. I have seen copies and variations of the cooling flywheel over the years in car action mag.

***note*** the flywheels dont provide a significant amount of cooloing but they are lighter.

good luck in your search.