BMW S1000RR Forum banner

Nearing the limit of mechanical valves in a production bike?

1K views 3 replies 4 participants last post by  DrIoannis 
#1 · (Edited)
I am not sure if this is new (probably not) but this great cut away footage of the valves on an Sthou engine at full tilt. Pneumatic or magnetic valve tech is still limited to racing engines (although I read somewhere that Koenigsegg are planning something), how much more horse power can we expect to see from 1ltre without forced induction?

https://www.facebook.com/MotorcycleScene/videos/1209759335718752/
 
#2 ·
It's not so much the opening of the valve, but somehow the spring pressure has to be high enough to close the valve so that it stays in contact with the follower. That is the challenge, to stop the valve from slamming shut, or hanging (even worse) open. Maybe we'll all switch to the Ducati method, or pneumatic springs. Or rotary valves?
 
#4 ·
You might find it a bit strange but the cost will be the factor so the current bikes will go up one more step in horse power in the near future. When the cost to produce more power reliably with the current solutions will be higher than introducing a new technology to produce more power, then the switch to pneumatic valves, valveless or what ever will happen.
There are soooo many things that will come. 5-6 years ago everything was about horsepower and then the BMW S1000RR came and changed the game.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top