flyrotary@lancaironline.net Mailing List Archive

Thanks yvon, The Hushpower have turned out to be the best I have tried thus far. They would work even better IF 1. I did not have the turbo block without the splitters in the exhaust ports - the splitters knock 8 db of energy off the exhaust noise. So that alone makes a noticeable difference. 2. I did not have two header pipes. Exhaust theory shows it would take a muffler 1/2 the size I am using or one the size I am using would be twice as effective if I had the exhaust from both rotors going through the same muffler. However, it was cheaper by 1/2 to go with two mufflers than have my exhaust header modified for one muffler. The bottom line is for those two reason, my exhaust is still quite a bit louder than I would prefer. However, the reason I made those decisions back a long time ago - was for POWER! MORE POWER Scotty!. At that time, I was looking for every HP I could find. Now that I have a much better induction system, the 2.85:1 gear box, larger prop, etc, I could probably trade off some power for quite. But, all things considered I'll keep the Hushpower II mufflers. Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com http://www.andersonee.com http://www.dmack.net/mazda/index.html http://www.flyrotary.com/ http://members.cox.net/rogersda/rotary/configs.htm#N494BW http://www.rotaryaviation.com/Rotorhead%20Truth.htm -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Yvon Cournoyer Sent: Friday, October 09, 2009 4:21 PM To: Rotary motors in aircraft Subject: [FlyRotary] 13B exhaust system Many types of 13B exhaust systems and configurations have been discussed and experimented since we began flying the 13B (and other rotary engines configurations) For exemple, Ed Anderson is using two exhaust pipes and two muffllers, and is apparently well satisfied with this arrangement. Ed, could you please list the pros and cons of such an exhaust configuration. Thank you Yvon -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3267 (20080714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com