Hi Speedy and Max,

For what is worth the straight finned flywheel takes noticeably more power to spin than the curved one. It also pushes a lot more air. We noticed this when racing Kirby KAV87's etc. on karts, they used the same flywheels. For racing we preferred the steel centred ones as they were more durable when being "punished"

Love the Pope, keep up the good work!

Regards,

FG

"Quality is remembered long after the price is forgotten"