I know it's faster but makes taking up the class a little easier, supposedly. 21.5 2s seems to have saved 12th scale in Japan. When I was there it was the biggest class at the race I was at. I can see the the Logic and can even picture how it was sold to IFMAR, the math is wrong but hey not everyone is an Electrical engineer. Somebody should have been there to do the math for them and show them how wrong they are.