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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1320514@logan.com>
Subject: Re: [FlyRotary] Re: Test
Date: Fri, 28 Jul 2006 12:22:34 -0400
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Chad, One thing that is crucial (in my opinion) in making a turbo/Na 
decision  is your intended operating regime.  If you intend to go high and 
fast then (in my opinion) a turbo starts to make more sense.  Or if you need 
considerable power to get a heavily loaded bird off the ground quickly and 
over a tall mountain - then  a turbo may make sense.

But, in my case, I very rarely every run it to my top end (for the reason 
mentioned) so adding a turbo becomes more of a technically interesting 
project - rather than one I really justify in my own mind.

Ed

Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
----- Original Message ----- 
From: "Chad Robinson" <crj@lucubration.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, July 28, 2006 11:44 AM
Subject: [FlyRotary] Re: Test


> Ed Anderson wrote:
>> I have two turbos sitting on my work bench - I've toyed with the idea on 
>> and off for years, but just couldn't convince myself that I needed one 
>> since I tend to cruise at lower airspeeds to keep the fuel burn and $$ 
>> down.  If I needed some extra boost just for takeoff, I'd probably just 
>> go NO2.  But, if I were to do a turbo, it would not be with the stock 
>> Mazda turbo but would use something like the TO4.
>
> I'm also toying with this decision, but fortunately in my case I have 
> plenty of time to make up my mind. The thing that keeps rattling around in 
> my head is that the Cozy I'm building was really intended to fly high. I 
> see pilots talking about exactly what altitude they start their oxygen, 
> and it adds fuel to my turbo fire.
>
> What I haven't been able to quantify is exactly how beneficial the turbo 
> is in this case - normalization. It seems you can calculate the numbers to 
> support either argument, and you have to weigh your goals against the pros 
> and cons of either decision. Sometimes choice is a bad thing.
>
> I guess, in the end, I will probably install a T04 mainly because I'm 
> following closely in John Slade's footsteps, and so far his T04 is working 
> out. I have enough time to watch how it continues to perform as he builds 
> up more hours on it. So far it seems promising. Eyes and minds open, I 
> guess.
>
> Regards,
> Chad
>
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