Message-ID: <003e01c4659f$a6bd3640$2402a8c0@EDWARD>
From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-300107@logan.com>
Subject: Re: [FlyRotary] Re: Turbo post mortem
Date: Fri, 9 Jul 2004 06:29:44 -0400
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit

If he is using the stock Mazda turbocharger, I believe he can get that kind
of boost at altitude.  The stock turbine out-let area is really inadequate
for the amount of exhaust gas mass flow you can get at WOT.  They have had
continuos problems with boost creep on the Rx-7 (at least some model years)
due to this.  So with the effective A/r of the turbo that small, 38" is
probably attainable where it wouldn't be with a turbine housing sized for
aircraft use.

I personally believe getting the stock turbo modified as offered by the
Aussies at this URL overcomes some of the limitations of the stock turbo for
aircraft use as I see them.  Of course going to some of the T4/T3 series
turbos can do the same as they have turbine housings with A/rs ranging from
around 0.4 to over 1.2.

http://www.turbonetics.com.au/ATS_p&s_12a_13b.htm

Ed

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message ----- 
From: "Michael D. Callahan" <micallahan@worldnet.att.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, July 09, 2004 1:14 AM
Subject: [FlyRotary] Re: Turbo post mortem


> Hard to put out 38" at 11.5K with the gate wide open;-) I want an intake
> like HIS if he can do that! Mike C.
>
>
> > That doesn't sound right.  How big is the wastegate, and what style (ie,
> > throttle plate or Delta-gate (or Race-gate)?  With the wastegate fully
> open
> > the majority of the exhaust should be bypassing the turbo.  Or am I
> > misunderstanding your comment?  WOuldn't be the first time. <g>
>
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html
>