flyrotary@lancaironline.net Mailing List Archive

Kelly, they are talking about taking metal off of each side of the rotor from the tip to about 3/4 of the way to the first oil seal ring (toward center of rotor) of the three vertexs. As the rotor rocks under the stress of HIGH horsepower generation due to flexing of Eshaft the rotor tips can touch the side housing causing damage, this is to give a bit more clearance under those conditions. For normal usage, it appears to convey no benefit - but high boost or N20 usage may require this to prevent rotor/wall contact.

Ed.

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

From: Kelly Troyer

To: Rotary motors in aircraft

Sent: Sunday, April 17, 2005 10:51 AM

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-------