Mailing List flyrotary@lancaironline.net Message #48017
From: John Slade <jslade@canardaviation.com>
Subject: Re: [FlyRotary] Regarding Scott Emery's turbo manifold
Date: Sun, 06 Sep 2009 21:42:11 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
> Is there a conventional wisdom as to when to use a waste gate.
Chris,
My wastegate is automatic. It takes a vacuum feed fro the intake manifold and cuts in and out automatically.
John

Chris Barber wrote:
Scott/Group,
 
I was just looking at the turbo set up that you posted.  http://gallery.eaa326.org/members/semery/?g2_page=1  Thanks for posting.
 
It looks great.  It is continuing my motivation to pursue the turbo. I also have the Conversions Concepts mount.  I too will likely have to fabricate - read that as have fabricated since, contrary to my manly man status :-), I know not how to weld :-(   - my turbo manifold.  I like how clean and simple yours is.
 
I am trying to decide the best position for it.  The current extension that I have on my engine - in order to clear the Mistral Injectors location puts my aftermarket turbo manifold perilously close to my aileron control linkage (about 3/4 of an inch, or so).  Also, it is right up on the top of the cowling.
 
My question to you is, I did not notice a waste gate mounting place on your turbo exhaust manifold.  Both my aftermarket manifolds have a place to mount a waste gate.  Did I miss it, is the wastage internal to the turbo? which I think is how Mazda did it, but figured this was not the case with the larger T04's we seem to be using).  Where might I add one to a manifold I would have made.  Would the position be secondary to just putting it in the place with most clearance?
 
While I have learned a great deal about how turbo's work, I am far from versed enough yet.  Is there a conventional wisdom as to when to use a waste gate.  I thought they were standard and the primary means to control boost, along with a pop off valve (if that is the correct term and idea?)
 
Advice and insight is sought and appreciated.
 
Thanks in advance guys and gals.
 
All the best,
 
Chris
 
Cpl. Christopher Barber, JD
Badge 330
Bellaire Police Department
5110 Jessamine
Bellaire, Texas 77401
 
713-668-0487
713-662-8289 fax
 
CBarber@BellairePolice.com

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