This has all the makings of a new cottage industry for someone with the right machinery.  Rework the apex seal slots, maybe .025 - .030 oversize, with properly sized apex and side seals.  Once you’ve built the tooling, these could be turned out in very little time.  Any takers?

Mark S.      

 

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From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Sunday, April 17, 2005 2:35 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: New rotors, New housings

 

I do know that my worn slots measured 1.98 mm at the bottom and range from 2.16 to 2.26mm at the top - giving an out of vertical of from 0.18 to 0.28 mm.  The specs say a maximum feeler gauge between an inserted apex seal and wall is given as 0.15mm, I could insert an 0.18 mm feeler in some and an  0.15mm in all.   I don't think I would feel comfortable flying with a rotary in that shape (anymore {:>)).  Putting them in an auto is a different story - if it breaks - park on side of the road rather than strain the eyeballs looking for an airpatch.

 

Ed A

----- Original Message -----

From: Echo Lake Fishing Resort (Georges Boucher)

To: Rotary motors in aircraft

Sent: Sunday, April 17, 2005 3:24 PM

Subject: [FlyRotary] Re: New rotors, New housings

 

Ken I screwed up on reporting the  rotor slot width, it should be 2.17 to 2.26mm not 2.017 to 2.026mm Georges  -------Original Message-------   From: Rotary motors in aircraft Date: 04/17/05 07:51:53 To: Rotary motors in aircraft Subject: [FlyRotary] Re: New rotors, New housings       -------------- Original message from keltro@att.net (Kelly Troyer): -------------- Georges,     Are these numbers in reference to the apex seal slot taper from the bottom of slot (2.017 mm) to the top of slot (2.026 mm) which is a taper of (.009 mm) or about 3.54 thousands here in the 48 ?? -- Kelly Troyer Dyke Delta/13B/RD1C/EC2   -------------- Original message from "Echo Lake Fishing Resort (Georges Boucher)" <echolakeresort@telus.net>: -------------- Correction, the readings were 2.017 to 2.026mm Georges     -------Original Message-------   From: Rotary motors in aircraft Date: 04/16/05 19:05:31 To: Rotary motors in aircraft Subject: [FlyRotary] Re: New rotors, New housings    Hi! Ken Do you you cut on a taper, where does your taper start? or do you just skim 0.015" off each side for a total of 0.030". I just measured the two rotors that were in a "GOOD" running 92 13b NA & got a reading of 0.017 to 0.026mm, I guess they are toast.    Georges Boucher -------Original Message-------

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