Received-SPF: pass
 receiver=logan.com; client-ip=66.133.182.167; envelope-from=canarder@frontiernet.net
Message-ID: <425FC47E.7020907@frontiernet.net>
Date: Fri, 15 Apr 2005 08:41:18 -0500
From: Jim Sower <canarder@frontiernet.net>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040514
MIME-Version: 1.0
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: V shape Apex Seal Slots?
References: <list-870187@logan.com>
In-Reply-To: <list-870187@logan.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Lee,
This would seem to indicate that if one discovered "tapered" slots 
before the seal came out and ate up the engine he could cut them out to 
3 mm and give the rotor a whole new life.
Does that make sense? ... Jim S.
PS  For '88 and '89 NA engines, how does $400 for a running engine and 
$250 for a core sound?

Lehanover@aol.com wrote:

>In a message dated 04/15/2005 1:44:52 AM Central Daylight Time, 
>lendich@optusnet.com.au writes:
>
>The slot is perfectly straight. No taper at all. If you stand a new or near 
>new apex seal on end in the slot, the exposed end should not move more than 
>(about) 3/16" total. New slot and new seal gives nearly no movement. The 3/16" 
>would be end of life span. 
>
>For aircraft use, new or nearly new is the way to go. 
>
>You can take engines apart that have been running fine, and the apex seals 
>are just about to fall out of the slots they are so short. The slots can wear 
>into obvious "V" shapes, and the engine is still running fine. My wife's RX-3 
>did that. I was just sitting at a stop sign one day and whack!!  A seal came out 
>of what was left of a big "V" slot and the rotor crushed it against the 
>housing. There was no chrome left on the rotor housings. Big grooves in the irons. 
>The only piece I could use was the crank.
>The whole thing was scrap.   
>
>The rotors are made of cast steel. You can weld on them. I have TIGed holes 
>shut and built up gouges and smoothed them off. Again not for aircraft but for 
>a dune buggy or any non critical application, I see no reason for scrapping a 
>piece I can fix quickly. 
>
>I grew up during W.W.II and you were literally not allowed to throw anything 
>away. So I don't (until recently). 
>
>Lynn E. Hanover
>
>  
>
>>> Homepage:  http://www.flyrotary.com/
>>> Archive:   http://lancaironline.net/lists/flyrotary/List.html
>>>      
>>>
>
>
>  
>