christianUK
Well-Known Member
Oh what we'd all give for a RHD GT350
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Kidney anyone?!Oh what we'd all give for a RHD GT350
Love the idea on a race engine... but look at all those windings and solder joints on each controller. Would you want to own it out of warranty with the catastrophic possibility of a failure? Maybe on a lower compression non interference design.Discovered this on Youtube the other night. Interesting stuff ..... S650 tech maybe? ... extend the life of the V8 by allowing efficiency improvements? ....
Yep, could be messy .... but I guess theoretically the default position would be closed so possibly not as catastrophic as a timing belt failure. How does it work on a pneumatic system like a Formula 1 engine, does that default to closed in the event of a failure? But ultimately technology and materials move on, so given the significant benefits I'm sure manufacturers will invest in the system and reliability will come. Going a step further though, I'm sure some bright spark must have come up with a design for a no-valve engine? .... get rid of the reciprocating mass altogether with some kind of rotating valve or something. Didn't Ducati do something like that on their MotoGP bikes a while back? ..... over to our resident bike expert [MENTION=13920]Enoch[/MENTION]Love the idea on a race engine... but look at all those windings and solder joints on each controller. Would you want to own it out of warranty with the catastrophic possibility of a failure? Maybe on a lower compression non interference design.
Thanks mate .... I knew Ducati had done something different with valves but couldn't remember what. That said, I could have sworn somebody had a go at a rotating disc kind of valve .... maybe I was dreaming?! :shrug:Camless engine... interesting
The Ducati system still uses cams, the difference between it and a traditional cylinder head, is that instead of using a spring to close the valve, the Ducati closes it mechanically with the cam...
The trouble with a spring is that at high revs they can bounce, and this in turn can hold the valve open slightly when it should be closed, thus losing power.
By mechanically closing the valve, you get more stable valve action and therefore higher revs without valve bounce..
It's very old tech, but with modern materials and management etc works very well
Camless looks like a whole new level of technology
Springs will always have there limits.... to light and you get flutter like you did, so replace with a stronger spring.... this eliminates valve bounce, but puts extra load on the cam, or follower..I had valve flutter in my Harley after I built it. Had to go back in and change the springs... solved that. Would have been cool to eliminate those springs altogether by like just attaching the valve to the pushrod or something like that. Seems logical... but I ain't no engineer.