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From: "William" <wschertz@ispwest.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-971134@logan.com>
Subject: Re: [FlyRotary] A little clarification...
Date: Tue, 31 May 2005 20:12:50 -0500
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Bill Schertz
KIS Cruiser # 4045
----- Original Message ----- 
From: <bbradburry@allvantage.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, May 31, 2005 7:37 PM
Subject: [FlyRotary] A little clarification...


>I am new to be reading this list and I seem to be terribly uneducated and
> stupid.  I know that this is true because I am seriously considering 
> putting
> a rotary in a Lancair Legacy Fixed Gear. *Not a sign of stupidity, but one 
> of expermentation*
>
> I wish someone would clarify some things for me.
>
> What is the difference in the 4 port and 6 port Renesis, and why should I
> choose the one that I should choose?
*Mazda makes two versions of the Renesis engine. Tracy installed a 4 port, 
the 6 port is from a six speed manual transmission version, and is designed 
to 'breath better at high rpm' and therefore make more horsepower. To my 
knowledge, no one is flying a 6 port version yet.*
>
> What does P Port mean and how is it different from the normal port?  *P 
> port stands for peripheral port. The 13-B exhaust port is a peripheral 
> port.

Does
> the Renesis (either one) have a P Port *no* and should it be modified to 
> have one
> put in it? *You are getting into research to do that*
>
> It seems to me that some of the mods needed to put the rotary in a plane 
> are
> pretty well figured out by you guys...Intake, Exhaust, EC2, Etc..  Some
> other things, cooling for oil and water, still being invented but with 
> some
> idea of what to do.  Other things that seem to be pretty basic and should
> have been solved by the certified industry 100 years ago, like how to run
> gas from the tank to the engine and back, are still being debated like we
> just realized we needed to consider it.
>
> I would really appreciate some help here.  I would like to build a plane 
> and
> fly it.  Low on the build and high on the fly part.  *Alternative engines 
> ALWAYS take longer to install than a standard aircraft engine* I am not 
> interested in
> doing R&D or starting a business building parts.
>
> There is a lot of discussion about the gentleman who died as to whether he
> had his fuel system set up correctly....How can this be?  How many 
> different
> CORRECT ways to do it are there?  Is the fuel system for the rotary 
> totally
> different from a REAL airplane engine? *The fuel system for a rotary 
> requires high pressure electric pumps for the injectors. Gas (excess to 
> what is burned) is returned to the tank. This results in added plumbing. 
> Some builders try different systems to get around the added plumbing and 
> the need for a 'duplex' valve. All designs have various 'features' and 
> shortcomings.  Apparently small changes from a given system can have 
> unexpected consequences, and this _may_ have been contributing to Paul's 
> problem ( used a 'sump' which has been used on hundreds of Cozy's 
> successfully, but changed the design to be shallow and wide rather than 
> deep.)
>
> I know that this sound really critical, but I don't mean it to be.
>
> Please help!!
>
> Bill Bradburry
>
>
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