I previously believed the only way 2 strokes were going to see a rebirth (since legislation won't help us) was through direct injection. This is not to say that the rules in motocross couldn't be changed to allow existing carb'd bikes equal displacement and therefore a rebirth that way, but as far as 2 strokes becoming mainstream again, i thought it had to be via direct injection. But after watching the Rotax E-Tec videos over and over
http://www.ski-doo.com/brphtml/skidooenginetech/en/Index.htm it occured to me that this kind of technology - which would be unbelievably awesome and revolutionary for a streetbike - is exactly what we DON'T need for the dirt. Everyone complains about the high entry fee and nightmare rebuilds of 4 stroke mx racing. Well the E-Tec is LOADED with technology and expensive bits - an ECM that is cooled by fuel, high tech fuel pump, complex injectors, complex oil pump, intricate exhaust valve. Bits tend to fail no matter how well built they are. I'd like to keep it simple and inexpensive. Perhaps use the lower tech Semi-direct injection or Ficht systems - greener than carbs and very frugal with fuel. We aren't talking about bikes that need to pass emission standards anyways.
The one added expense i'd like to see become standard on all 2 stroke mx bikes regardless of fuel delivery is Oil Injection. A well designed system would add maybe a pound or so, and since it would borrow from existing technology, wouldn't add much to the cost of the bike. But it would eliminate yet another reason why people should go 4 stroke (yes i know about frequent oil changes on mx 4 strokes). And less people buying 4 stoke is how we get our beloved 2 stroke back.
Thoughts?