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Date: Fri, 20 May 2005 14:13:26 -0400
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Sized 13b
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Ed Anderson wrote:

> Plugs Up itself was not the problem,  inadequate understanding or 
> attention to the details of lubrication subsystem was the problem. 
>  
>  Dave now uses one of powersports spur gear PSRUs, the one that 
> weights 65 lbs and cost $6500.  He apparently went through several 
> Ross drives and having gone through one myself I can understand - 
> although not agree - with his views concerning the planetary drive. 
> Simply a less than adequate design as embodied in the Ross drive.  
> Tracy's drive is a different breed of cat altogether.
>  


Goes back to something you said last Saturday.  You said it 
off-handedly, but it really carries a lot of weight and import.  I can't 
quote it exactly, so I'll paraphrase:

If you're going to copy a system, you have to copy it exactly.  Any 
changes makes it a different system.  Then you have to go back to the 
basics and actually understand how the system works.

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