Posted by NITRO on September 24, 1998 at 00:43:00:
In Reply to: Not far-fetched... posted by body on September 23, 1998 at 23:42:08:

Pneumatic valve closure and finally opening has been used by even domestic racing as far back as 1970, and as the systems eliminate the spring, they are very dependable and make those "little buzzy cars" run with little trouble in the valve train. The events themselves are dictated by piston to valve clearance, so the events are far from being infinitely variable.
Solenoids have been in use for twenty five years here for camshaft development, however, it's only been recently that dependable units that were capable of moving the valves at the necessary velocities with reliability have come available. It is safe to say that we will see valve by wire, just as drive by wire within the next 5 years in a lot of production cars.
Rest assured that we'll be trying to lead the way on this, unless the sanctioning bodies ban the use of electronic valve actuation. It could save many of our Pro customers $400.00/ valve spring that lasts 7 runs max...it's a good thing that they don't have 32 valves! The sanctioning bodies may balk at the use because the cam manufacturers make more money from spring sales each year than they make on cams, and ,of course, you have both NASCAR and NHRA banning electronic controls....the stuff would be illegal under current rules.

Posted by Haberdasher (sigma4@concentric.net) on September 24, 1998 at 12:45:52:
In Reply to: Re: Hydralics are not Electromagnetic posted by body on September 24, 1998 at 00:43:00:

He was pointing out the fact that if pneumatics can be used in the valve train, its reasonable to believe that solenoids could be used too, and apperantly they can. Its called inductive reasoning...perhaps you should try it sometime...

Posted by NITRO on September 24, 1998 at 18:54:20:
In Reply to: RacerX wasn't claiming that hydralics were electromagnetic... posted by body on September 24, 1998 at 12:45:52:

Any advice you can offer would be highly appreciated. We aren't so picky here, but now that we buy blowers from Germany and our other businesses have become international in scope, any positive imput you could provde would be helpful, as I don't want to upset potential partners with the wrong interpretation of what they are saying. If this lack of inductive reasoning is one of my problems, what is deductive reasoning....I don't understand the difference. If a timing light is inductive, could one work if it was deductive?
In an attempt to understand this more, I looked in the dictionary and now I see your point: inductive means to reason from parts to obtain a full picture, while deductive is to derrive conclusions by reason. Reason has no parts to put into the picture. I'm starting to see. T.O.O.'s right..the day you don't learn something new should be the day you die. Thanks, and more lessons would be appreciated.