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From: david mccandless <daval@iprimus.com.au>
Subject: Re: [FlyRotary] Re: WARNING V Grooves
Date: Sun, 24 Apr 2005 08:03:37 +0800
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>


On 24/04/2005, at 7:43 AM, Ernest Christley wrote:

> david mccandless wrote:
>
>> Hi to all, has anyone ever considered ball-milling out the apex seal 
>> grooves and pressing in a round tough steel insert and then milling 
>> the seal slot in the steel insert. This would then be' horse shoe' 
>> cross section, so to speak. The corner button seals could also fit 
>> into the ends. Maybe a new rotor would be cheaper, but this may have 
>> better reliability and longer life. FWIW, Dave Mc
>> On 24/04/2005, at 5:24 AM, Ed Anderson wrote:
>>
>
> Sounds expensive.  And how will you keep the insert from flying out of 
> the rotor as centripetal force tries to fling it out at 2000RPM?
> ****Hi Ernest, I think you mean centrifugal force; and if the slot was 
> ball-milled, the insert would be captured by both "claws" of the 
> milled channel; also, just like the seals, the rotor housing would 
> contain the whole assembly. Anyway, I think your comments about 
> 400hrs/ 5 years makes much more sense in the overall scheme of things. 
> BR,Dave McC