Certainly some fascinating claims, Dave.    1 psi would appear in the feasible category on the one.  The $299. price for the other which from the photo appears not to be a turbo compressor scroll, but black ABS plastic which is different from the Thorton photo of a turbo compressor scroll for $99.00.
 
The Thomas Knight electric supercharger appears the most credible by far.  He is using 3 starter motors to drive a positive displacement compressor to get 3-6 psi boost using 700 amps at 12 volts - It appears he went to three 12 volt batteries in series to get the voltage higher and lower current.  So that installation has got to weigh a ton counting the three batteries.
 
Still looks like the mechanical driven supercharger or exhaust drive turbocharger are still the most credible means of forced induction.  I had hopes for the Aeorchallenger Turbo that came out requiring no lubrication lines back a few years ago (had its own self contained lubrication), but they never had one for the rotary and it appears they have vanished from the scene.
 
Well, fun to think about a $99 supercharger that would produce 3-6 psi of boost - but, I don't see it happening.  So guess got to wait for the 16B as Dave suggested.
 
Ed

    ----- Original Message -----
    *From:* David Leonard <mailto:wdleonard@gmail.com>
    *To:* Rotary motors in aircraft <mailto:flyrotary@lancaironline.net>
    *Sent:* Thursday, December 20, 2007 11:42 PM
    *Subject:* [FlyRotary] Re: Fw: Give A Head Start to Your Car with
    our Electric Supercharger!!

    OK, here is another company that seems to be selling the same
    supercharger at the same price:
    http://www.electricchargers.com/
    at least they have an address (Tacoma, WA) and a phone number to
    call for further info.

    Here are some video of people playing with them...

    Launching beer cans:

    http://www.youtube.com/watch?v=oGQ-Xsj7hE4&NR=1
    <http://www.youtube.com/watch?v=oGQ-Xsj7hE4&NR=1>

    6 psi of static boost:
    http://www.youtube.com/watch?v=b6kvkR_NX8w&NR=1
    <http://www.youtube.com/watch?v=b6kvkR_NX8w&NR=1>

    *Here is a similar company* with* more info* and a different
    product.  Specifically, they have much more realistic claims,
    looks to be a compact size as well.  I think this is the real deal.

    http://www.electricsupercharger.com/products-eram.html

    Here is the report (from a different website) of a guy who put one
    of those on his NSX:

    http://www.240sx.org/faq/articles/superchargers.htm

    No need to add an extra battery Ed,  If you are just using short
    bursts it will draw off your current battery.

    Here is a guy who tried to build his own out of a Marine
    blower...  did not work,  tiny little motor so probably not a fair
    comparison:

    http://homemadeturbo.com/tech_projects/el_blower/index.html

    Finally, here is a Q and A from a guy who built his own for real
    racing...  won't apply to us, but he did it right (just does not
    say how)

    http://www.turbomagazine.com/tech/0406tur_knight_turbo_electric_supercharger/index.html


    Dave Leonard

    On Dec 20, 2007 6:57 PM, Ed Anderson <eanderson@carolina.rr.com
    <mailto:eanderson@carolina.rr.com>> wrote:

         This is the response I got from Thorton Electric Supercharger.  I
        specifically asked for weight which is not given.  You be da
        judge.

        Ed

        > Hi,
        >
        > Yes, we do have the specific model of supercharger package
        you need for
        > your Mazda Rx-7.
        >
        > We personally guarantee 30% gains in horsepower and torque.
         Your actual
        > gains will depend on your existing engine conditions.
        >
        > The price of one supercharger and complete package including
        shipping
        > comes out to US$124.95 for customers outside of the USA, USA
        customers
        > will pay US$109.95.
        >
        > Extraneous testing sources indicate the following results :
        >
        > Air Flow:  1100CFM
        > Pressure:   8 PSI
        > Motor Speed:  25000 RPM
        > Current:   50 AMPS
        > Power Consumption:  600 Watts
        >
        > The installation instructions that are included with your
        order will
        > explain how to do a professional install in a matter of a
        couple hours.
        > The supercharger will hook in parallel with your intake, and the
        > performance chip will hook up in parallel with your ECU.
        >
        >
        > Delivery will take 1-2 weeks.
        >
        >
        > If you have any further questions, feel free to ask.
        >
        > thanks,
        > Jeff
        >
        >
        >> -------- Original Message --------
        >> Subject: Contact Us
        >> From: eanderson@carolina.rr.com
        <mailto:eanderson@carolina.rr.com>
        >> Date: Thu, December 20, 2007 9:32 am
        >> To: sales@electricsupercharger.net
        <mailto:sales@electricsupercharger.net>
        >>
        >> Name: Ed Anderson (Rotary_Ed)
        >>              Car Make :  Mazda              Car Model :  Rx-7
        >> Car Year:  1991          E-mail address :
         eanderson@carolina.rr.com <mailto:eanderson@carolina.rr.com>
        >> Enter question or concerns here :           I can find no
        specifications
        >> for your product on your website. Have I simply missed it?
        Interested in
        >> technical details such as weight, size, power requirements,
        compressor
        >> maps suitable for RX-7 Rotary engine use.ThanksRotary_Ed
        >


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    --     David Leonard

    Turbo Rotary RV-6 N4VY
    http://N4VY.RotaryRoster.net
    http://RotaryRoster.net