[CYCLE_MONKEY]

If 5-valve heads are superior, why doesn't the most advanced and highly-developed form of 4-stroke racing on the planet (F1) use them? I'll give you a hint:



They aren't as good. I read a couple of technical articles on the fact.



Feel better now? Here's another one for you:



Why did Honda stick with an obviously inferior V-4 engine configuration for as long as it did when the Ducati's were eating their lunch for all these years? MARKETING REASONS. They switched to the twin, took advantage of the rules, and won the first time out. Doh! Feel stupid now?

 

[CYCLE_MONKEY]

1ST: BLOW ME.

2ND: Define "extra long swingarm".

3RD: Who cares about EXUP? It's actually been around longer than that, but I wouldn't expect a kid to know that.



4-valve heads were copied from aircraft piston engines of the 40's. So what?



Do you have a point besides the one on the top of your head?