Rusty Bucket USA wrote:All true.
There's another article I read last year by Kevin Cameron - which, unfortutely, has never been published on the Cycle World website - that talked about how the cam shafts start to twist in the rev range they're now running in MotoGP. The theoretically limitless top speed is one thing, but the movement up and down the tach wreaks havoc on valve timing because of this.
But, yes, the system is largely more efficient in that the parasitic losses from the extra rotating mass of the camshafts is less than the high compression from the valve springs (be they air or metal).
yzr-m1 wrote:One of the reasons big bang engines were introduced for 990cc was to decrease tyre wear...
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