A call to the electrical engineers of the list

[brads@mindspring.com (Brad Sheridan)]

  Oh, so you have found a solid state nitrous solenoid? Nifty!

 20hz is the limit, not because of the relay, but because of the 
nitrous solenoid. You might be able to drive it a little faster than 
that, but that frequency is what I have seen used in commercially 
available units which use solid state electronics, and not relays to 
drive the solenoids. Apparently, nitrous solenoids are a little 
slower to turn on and off than your typical injector, and require 
more current too. It might have to do with the pressure of the 
nitrous, or just that they were never designed to switch fast. Also, 
I said NOT to use relays and instead use an ignition coil driver, 
because they can handle the switching of 10 plus Amps at a reasonable 
frequency and not go POOF. 

Brad

On 12 Mar 2002, at 23:14, Brian McGarvey wrote:

> 
> you konw folks were are in the age of solid state electronics.
> where as 20hz is fast for a relay its really slow for power electronics.
> brian
> 
> On Tue, 12 Mar 2002, Brad Sheridan wrote:
> 
> >
> > The ones I have seen, dont have a fixed pulsewidth, but rather a fixed
> > frequency they are working with. This is 5,10 or 20 hZ, from what I have
> > seen available. The quicker you pulse the solenoids, the shorter life
> > expectancy they will have. Also, dont use a relay to drive the solenoids if
> > you are going to pulse them, the relay switches too slowly, and they dont
> > like being pulsed like that. You'll need something along the lines of an
> > ignition coil driver to do that...
> >
> > Brad
> >
> > >>On Mon, 11 Mar 2002, Allyn wrote:
> > >>
> > >> > I got you covered. Also if you can find out what pulse width the
> > >>variable nos controllers use i can
> > >> > make you a programmable ramp-up from x rpm minimum nos to y rpm full
> > >>nos.
> > >> > Al
> > >> >
> > >> > ----- Original Message -----
> > >> > From: "Night Shadow" <soltwede@privateI.com>
> > >> > To: "Scirocco List" <scirocco-l@scirocco.org>
> > >> > Sent: Monday, March 11, 2002 10:54 PM
> > >> > Subject: A call to the electrical engineers of the list
> > >> >
> > >> >
> > >> > >
> > >> > >
> > >> > > Hey guys,
> > >> > >
> > >> > > I am in need of a simple device for my NOS setup, and I don't want to
> > >> > > spend big bucks on a NOS controller.  What I want is an RPM sensing
> > >>switch
> > >> > > that will only turn on at or above a certain RPM.  How hard/expensive
> > >>is
> > >> > > this to build, and anyone willing to design something for me?
> > >> > >
> > >> > > --
> > >> > > Eric
> > >> > > Northglenn, CO
> > >> > >
> > >> > > 76 Honda CB400F Super Sport
> > >> > > 80 Scirocco (Parts car again, no more DD duty)
> > >> > > 81 Scirocco S (2.0 16v swap and complete restoration in progress)
> > >> > > 81 Rabbit Truck LX Diesel (THE NEW RIDE)
> > >> > > 91 Cabriolet (2.0 Crossflow 8v swap and mechanical rebuild in
> > >>progress)
> > >> > > 00 Golf GL TDI (Katy is driving this for now)
> > >> > >
> > >> > > "For Aquarians, the physics of loopholes is a perfectly valid
> > >>science."
> > >> > > -Kelli Fox
> > >> > >
> > >> > >
> > >> > > _______________________________________________
> > >> > > Scirocco-l mailing list
> > >> > > Scirocco-l@scirocco.org
> > >> > > http://neubayern.net/mailman/listinfo/scirocco-l
> > >> >
> > >>
> > >>--
> > >>Eric
> > >>Northglenn, CO
> > >>
> > >>76 Honda CB400F Super Sport
> > >>80 Scirocco (Parts car again, no more DD duty)
> > >>81 Scirocco S (2.0 16v swap and complete restoration in progress)
> > >>81 Rabbit Truck LX Diesel (THE NEW RIDE)
> > >>91 Cabriolet (2.0 Crossflow 8v swap and mechanical rebuild in progress)
> > >>00 Golf GL TDI (Katy is driving this for now)
> > >>
> > >>"For Aquarians, the physics of loopholes is a perfectly valid science."
> > >>-Kelli Fox
> > >>
> > >>
> > >>_______________________________________________
> > >>Scirocco-l mailing list
> > >>Scirocco-l@scirocco.org
> > >>http://neubayern.net/mailman/listinfo/scirocco-l
> > >
> > >
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