Mailing List flyrotary@lancaironline.net Message #42671
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Rotor Housings
Date: Fri, 2 May 2008 22:14:09 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Mazdatrix offers new rotor housings one for an 89-92 N/A Front housing will run you $571.90   They also have the rear housing as well.
 
 
I have a paper which showed that the exhaust splitters reduce the noise energy by 8 DB - a considerable amount.  The fact that it did reduce the noise level by that much was cause for the conclusion by a number of folks that using a turbo housing without the obstruction to exhaust flow would result in more power.
 
So, Joe, I guess my question is if you are willing to go to the cost and effort to produce a PP (for more power presumably) then why would you  be willing to give up power by using a NA housing with a splitter.
 
On the other hand, I am not aware of any dyno charts showing use of a turbo and N/A housing and the effects on power so there may not be that much of a difference.  I just  keep remember about reading that the power output of a rotary was very sensitive to  exhaust back-pressure and have always tried to keep my exhaust system free flowing.. 
 
Perhaps our list expert, Lynn, could provide some credible info on this question.
 
Good luck, I would like to see someone produce a PP, several have come close, but none seem to ever end up in an aircraft.
 
Best Regards
 
Ed
----- Original Message -----
From: Joe Berki
Sent: Friday, May 02, 2008 9:16 PM
Subject: [FlyRotary] Rotor Housings

Does anyone have a set of new rotor housings for 89 to 92 13B?  Where should one look?  What is a good price  for them?  I want to build a P Port but I wonder if the non turbo variety would help for noise suppression?  Thanks for any help.
 
Joe Berki
Limo EZ
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