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I noticed that the apex seals in my rotors were concave on the sides, although I didn't measure the actual gap when you add what is left of the seal thickness to the .20mm or so measured you probably have 0.50mm play. Did you have a lots of wear on the side of your side seals? I'm with you Ed if the measurements are not within specs. the rotors are not going in my airplane.
Ken, I'm planning on a max of 7500rpm & a 50hp NOS boost when required , do you think rotor machining would be required?
Georges Boucher
-------Original Message-------
Date: 04/17/05 12:35:17
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 -----
Sent: Sunday, April 17, 2005 3:24 PM
Subject: [FlyRotary] Re: New rotors, New housings
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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-------
Date: 04/17/05 07:51:53
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>: --------------
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Correction, the readings were 2.017 to 2.026mm
Georges
-------Original Message-------
Date: 04/16/05 19:05:31
Subject: [FlyRotary] Re: New rotors, New housings
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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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