Which is why they're experimenting with electromagnetic valve actuation, then you can get rid of the camshafts,cam drive gear etc and have infinitely variable valve actuationOriginally Posted by cowpoos
In the riders seat
Which is why they're experimenting with electromagnetic valve actuation, then you can get rid of the camshafts,cam drive gear etc and have infinitely variable valve actuation
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Forum whore
flow even more air with rotary valves!!
Forum whore
Aprilia used them on their triple....
Formula 1 cars are limited to 19,000rpm for their motors, but can spin to over 20,000!
“- He felt that his whole life was some kind of dream and he sometimes wondered whose it was and whether they were enjoying it.”
Royal Enfield user
New news ? My ole Enfield has been using ignition variable cams for donkeys years ...
Stephen
Ps Fogot about the dukes desmo .. ( as you do ) yes they will be getting a lot of area under that valve lift chart ,,, and the drive out of the corners ...
Stephen
"Look, Madame, where we live, look how we live ... look at the life we have...The Republic has forgotten us."
Valiant Man
Personaly I think the problem is not the speed but the tyres, how many races this year have the tyres plaid a big part in the outcome of the races. Fitting a new motor can give Rossi more Hedaches, shure the Ducati's are alot faster but on the more technical tracks Rossi has been cleening up apart from rain affected races whare his choice of tyres was wrong. Going to be exciting though eh!
parting of the sensory
True, but it's not Rossi's team that's made the mistakes - it's Michelin that's screwed up, and big time! If you look at each of the races (particularly the wet ones), if Rossi hasn't done well, then neither have most other riders with Michelin-shod bikes (Edwards, Pedrosa, Hayden, etc.) In fact, up until the last race, Michelin had done a crap job of supplying decent tyres, and the restrictive tyre rules operating this season have made it even more tricky. So far Bridgestones rule in the wet, so it'll be interesting to see if that's true for all wet races, or if Michelin can provide something that sticks and doesn't fall apart before the end of the race.
... and that's what I think.
Or summat.
Or maybe not...
Dunno really....
Ducatisti
Hardcore Biker
I had thought that F1 were already using electromagnetic valves, but that must have been false info. If you think about it that is the way to get pefect valve control with minimal ancillary components and mechanical drag. That is what they should be bringing to motogp in my opinion.
And cowpoos, I'm not familiar with these rotary valves. Could I get an explanation or a link?
Hardcore Biker
Just get rid of the valves and all the associated whirring springy slappy gappy bits and return to real racers with no valves , bring back the 2 strokes !
In the riders seat
What about the reed valves?
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Pretengineer
There's always oneWhat about the reed valves?
Forum whore
YPVS....Yamaha Power Valve SystemWhat about the reed valves?
Forum whore
Google is your friend
now where's some dirt!
Ahh that makes sense. Guess they are quite bulky though. No springs to break or valves to hit the cylinder heads though. Guess its pretty much identical to the rotary valves in 2 strokes (ala aprilia 250 and 125 motogp bikes).Google is your friend
Forum whore
bulky!!! how deep is a modern DOHC head??
they have the potential to flow a high volume of air...I'm pretty sure one of the short comings of thier development was lubrication...but oils,metalology and techonology has come along way...I'm sure the short comings would easily be solved!!
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