RE: Tires (50mm intakes)

["Aaron Ness" <aaron@makuta.com>]

As I understand, electromagnetic valvetrains have been attempted but have
not yet been feasible for production.  I think the early efforts used so
much power that there was nothing left for the wheels or something like
that.

There's a push towards 42V electrical systems in cars, but I expect the US
may be the last major market to see them (behind Japan and Europe).  This
will make electrically-driven accessories more feasible so they can be
driven only on demand, such as A/C, power steering, water pump, etc.  More
importantly to us, though, is the fact that it will make an
electromechanical valvetrain much easier to accomplish.  According to the
trade magazines I've seen (Ward's Auto World, Automotive Industries), this
stuff isinthe development stages right now and the 42V system is just down
the road.  I believe there are suppliers that are already offering
electrically driven, on-demand power steering modules that improve fuel
economy and reduce assembly costs, but I'm not aware of any cars that use
them at this time.


> -----Original Message-----
> From: owner-scirocco-l@scirocco.org
> [mailto:owner-scirocco-l@scirocco.org]On Behalf Of cory fonger
> Sent: Wednesday, October 04, 2000 11:28 AM
> To: scirocco-L@scirocco.org
> Subject: Fw: Tires (50mm intakes)
>
>
> everyone has done that, just honda gets all the fame. im not
> sure who came
> out with it the very first, but toyota has the VVTL-i. rover
> had one for
> theyre 4 cyl, porsche did too on the 968, and some other
> companys did also.
> the thing is, that just changes when and/or how much the air
> enters the
> engine. ford/mazda did something a bit different. the 93
> probe gt's and up
> have a "variable geometry intake" or somethingorother. after
> about 3500rpm
> you suddenly get a surge of power on this car. its similar to
> when a turbo
> kicks in, only not nearly as much power. the taurus sho
> (engine by yamaha)
> has a two stage intake. after a certain rpm the shorter
> fatter runners open
> up and dump loads of air into the engine. you can rev the sho
> to hell, and
> still have power just because it can flow so much air. im
> surprised no one
> came up with an electromagnetic valvetrain yet. that would
> make the valve
> openings infinitely variable. one thing i was thinking of
> was, not that hole
> bigger or smaller thing, but somthing similar to a chinese
> finger trap.
> where if you pull on it, it stretches out and gets narrow,
> and when you push
> it together it gets wide and short. but thats kinda tricky i
> s'pose. it
> would leak air, so you would have to have a hose or
> something, that could
> follow the movements, inside of it. hmmm......im just babbling!
>
> have a good day people,
> cory
>
>
>
>
>
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