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From: "George Lendich" <lendich@aanet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-4195325@logan.com>
Subject: Re: [FlyRotary] Re: Weber chokes
Date: Mon, 5 Apr 2010 08:51:01 +1000
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 Bill,
Six sigma? isn't that like Windows, put out something flawed and get 
everyone using it to act as problem solvers.
George (down under)

> You are correct of course. The thing is that electrical power is more 
> reliably made than internal combustion! Don't forget that the operation of 
> a magneto realy is a simple generator. Modern alternators are very 
> reliable, and in conjunction with a battery as good as you will ever get. 
> A small secondary motorcycle battery will keep you running long enough to 
> get safely on the ground. The original Powersport system uses a mechanical 
> FI also. The Siemens direct injection is designed to be a six sigma part. 
> Once I can get that running I won't be worried. I am visiting my kids in 
> Utah. Driving here we drove across Nevada which is VERY desolate. There 
> are places where there is nothing for 100 miles. I wouldn't want an engine 
> failure there either but modern EFI is so reliable we take off and expect 
> to drive 400 miles at 75 MPH without stopping! The truck is diesel but has 
> EFI.
> Bill
> ------Original Message------
> From: George Lendich
> Sender: Rotary motors in aircraft
> To: Rotary motors in aircraft
> ReplyTo: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Weber chokes
> Sent: Apr 4, 2010 2:40 PM
>
>
>> George,
>> You are correct but remember the manifold efficiency is based on having
>> the correct size runners to begin with. The venturi is needed to improve
>> vacuum to draw fuel. The Weber has a secondary venturi as well, the 
>> little
>> bullseye one in the middle. So things are complicated in any case. A well
>> tuned FI is almost always better.
>> Bill Jepson
>
> Bill,
> I love the concept of FI, it's the electronics and the complexities of it
> all that worries me. I think Lynn said it best, FI is almost always 
> better -
> provided you have power. I couldn't have said it better myself.
>
> That statement struck a note for me, as I remember when I was traveling by
> myself in a very remote part of north Western Australia on a new bike 
> (1800
> Suzuki), it's got fuel injection the lot, all of a sudden it stopped and I
> was thinking %^&(*^$# how in the hell am I going to fix this out here.
> Luckily by the time it rolled to a stop I realized I had bumped the kill
> switch - -but for that moment there was a lot of anxiety.
> George (down under)
>
>
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