Laverda - Odds and sods from the WWW

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The Sock said:
"Seek out a bike with an expert owner who has fitted a modern electronic ignition,"
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Well, that certainly wasn't written by an expert for a start. No doubt a member of the occult motorcycle in the living room sect.
Probably ridden Honda mopeds all his life.

Paul
 
Not a bad write-up when compared to others I've seen over the years (like an Australian journo who commented SF lacked the stability of its triple cylinder brother because it didn't have down tubes and a full cradle frame!!!!).

Had to laugh at the claim that the front brake 'was good enough for the factory endurance racers' ... really? Maybe for the very early races?? But not for long!! And the cycle parts (like switchgear) are from the dodgy parts bin??? ND and Bosch, dodgy parts bin stuff, eh?
 
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A fair enough appraisal I would agree with Q. The earlier bikes had those universal tin switches and I see them still working fine but he must have got a bad one. Dead easy to go ND switches on any SF if that was a concern. I bet that John O Groats trip was done with points not electronic ign, as were our two day Melbourne - Perth trips back in the day. But give me discs any day of the week.
 
bazzee said:
www.mcnews.com.au

Iconic Italian Motorcycles | Laverda's 750 SFC | MCNews

Phil Aynsley looks at an unrestored Laverda 750 SFC, from the second batch of 1978-1980 bikes constructed or the 8.000 series...
www.mcnews.com.au www.mcnews.com.au
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That’s my old bike. Phil Aynsley took the pics in the heart of winter, not in a studio as you would expect, but outside. We were so lucky with the weather. The street was part of the set, which necessitated us to get out of the way with cameras and lights every time a car approached. Makes you look differently at the fantastic pictures he took that day!

Marnix
 

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The picture of the SFC being ridden shows a replica made by Moto Officina.
Picture from the French mag Moto Légende. No credit given for that.

Paul
 
I’m thinking that the valveless engine, has valves that cut in ........ buggered if I know how that works? I’ll admit, that lifting the hood on a car with that motor, would be slower than me closing it.

Even on my car, I just look for the yellow bits and that’s about all I know about under there.
 
Electronically steered pneumatic valves are already being used, so it would be a development of these. MotoGP use pneumatic valves, not sure if they are electronic though. Just like firing orders have become more flexible with oddball cranks, so are they working with variables of valve actuation. Great stuff.
 
The pneumatic valves on MotoGP bikes just use air pressure rather than springs to close the valves. They still have camshafts to open them and there's no fancy electronic control as far as I'm aware.

Koenigsegg uses a fully pneumatic system to open and close the valves, which does away with the camshafts altogether. A computer tells each valve when to open, how far to open, and when to close. The timing and opening height can be controlled precisely according to the engine's needs. It's the ultimate in valve control technology. It's also mechanically simpler than camshafts, eliminates the need for throttle bodies (mixture flow is controlled entirely by the valves) so engines can be smaller, lighter and cheaper to build, at the same time as being way more efficient and cleaner running. I dunno why the technology hasn't been enthusiastically adopted by other engine manufacturers. Mechanical valve operation is past its use-by date. Why the fuck are most manufacturers still persisting with camshafts?

Christian Von Koenigsegg explains the technology very well.
 
The speed required to control this is WOW. There was a time when just simple variable cam timing was pretty impressive.
 
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