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From: "George Lendich" <lendich@aanet.com.au>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-4195434@logan.com>
Subject: Re: [FlyRotary] Re: Weber chokes
Date: Mon, 5 Apr 2010 17:27:56 +1000
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Bill,
Just stirring! I had a quick look up on Google and seemed to indicate that 
it was a kind of quality measure - I saw no hard facts on it though.
George (down under)

> NO NO NO!
> Six sigma is a program where there will be 99.99999% good parts. Windows 
> is more like -99% good parts! I can understand your reluctance though if I 
> was talking windows!
> Bill
> Sent from my Verizon Wireless BlackBerry
>
> -----Original Message-----
> From: "George Lendich" <lendich@aanet.com.au>
> Date: Mon, 5 Apr 2010 08:51:01
> To: Rotary motors in aircraft<flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Weber chokes
>
> 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)
>>
>>
>> --
>> Homepage:  http://www.flyrotary.com/
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>>
>> Sent from my Verizon Wireless BlackBerry
>> --
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>>
>
>
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