Mailing List flyrotary@lancaironline.net Message #20165
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: Fw: Rx-8 Rotors useable in 91 13B?
Date: Tue, 12 Apr 2005 19:41:38 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Thanks George, I will look around
 
Ed
----- Original Message -----
Sent: Tuesday, April 12, 2005 7:00 PM
Subject: [FlyRotary] Re: Fw: Rx-8 Rotors useable in 91 13B?

Ed,
About $50 to $60 bucks a slot ( wirecut - EDM), this was my first quote and I have yet to look for alternatives. This is still cheaper than a RX7 9:1 rotor.
 
BTW $270 US is not the cheapest price, I only paid $273 Aust ( I believe with a 70% mark-up) and the exchange rate is 77c in the US dollar. So a good price to you chaps is $210 - 220. Got to shop around.
 
George ( down under)
----- Original Message -----
Sent: Wednesday, April 13, 2005 6:48 AM
Subject: [FlyRotary] Fw: Rx-8 Rotors useable in 91 13B?

Here is the response I got from Mazdatrix about using RX-8 rotors in a 91 block.  The rotors are $270 less than the 9.7:1 rotors, but I imagine that milling the slot deeper will cut into that price differential a bit.  But, on the other hand I could have an RX - 7 1/2 engine in my aircraft.
I am going to look into this a bit more and find out how much to mill a rotor.  A lighter rotor => more rpms without increasing stress?
 
 
----- Original Message -----
Sent: Tuesday, April 12, 2005 4:21 PM
Subject: Re: Rx-8 Rotors useable in 91 13B?

You can run the renesis rotors if you get the apex seal grooves milled deeper to accept the 86-95 apex seals, or the 74-85 3mm seals. The Renesis seals are not tall enough to pass over the exhaust port without warping and breaking. You also need to run the 86-95 corner seals, not the Renesis corner seals. (there's a metallurgical conflict with the side housings) 
The front and rear counterweights from the Renesis engine to balance the rotors are available.

Geoff Barton
Mazdatrix
2730 Gundry Ave
Signal Hill, CA 90755
www.mazdatrix.com
geoff@mazdatrix.com
 
 
 
 

 
----- Original Message -----
Sent: Tuesday, April 12, 2005 12:40 PM
Subject: Rx-8 Rotors useable in 91 13B?

Can the RX-8 rotors be installed in the 91 13B block?  Assuming you get the seals,bearings, etc for the RX-8 Rotors?
Are counter weights for the lighter RX-8 Rotors available?
 
Thanks
 
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
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