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All this porting stuff is soo..primitive

 
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Eson



Joined: 29 Aug 2005
Posts: 7
Location: Sweden

PostPosted: Sun Sep 11, 2005 3:07 pm    Post subject: All this porting stuff is soo..primitive Reply with quote

The rotary need a variable ports to evolve. Just look at a 2-stroke and a 4-stroke, to improve the 2-stroke you need to take the mill out and make bigger intake ports. On a 4-stroke, you just need to change the cam axle, which one is cheaper and require less time to install? And its exacly the same with rotaries.

Sure you miss the point with few moving parts that can fail, but does it really have to be? When i was on an engineering-fair they had a pneumatic driven valve which was controlled by a computer. This setup removed alot of weight, parts and also made it possible for easy experimental tuning.

If you look closly you see that the valve is moving (ghost image)



Why not have a valve on the exhaust too? The new Renesis's side exhaust made it possible for later exhaust timing which led to higher performance.
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