Hi all In the Netherlands we have to do a noise test. This year I have to do it....cost will be 600 euro. And if you are to loud with your plane you have to do it again...and pay again..grgrgrgr. A few guys from the air field told me that our plane is making a bit more noise than normal. So I need to design an muffler. I have surged on the internet but there is a lot information. I think to make a turbo muffler (strange name) so I have to design something.
My easiest fix is to install my catilisator again. Before the first flight I removed it to save some weight an this cat gives Also a lot backpressure. On the end off the system I have the original BMW muffler (absorber). My idea is to design a turbo muffler instead of the catalisator. Is there someone in our KR family who can help me to design something? The engine sound is 6500 rpm sound. The lenght I can easily use is 12/ 13 inch. If I go longer I think I have to install the Muffler outside the cowling. That is not what I want. http://www.masttotaalconcept.nl/kr2/styled-27/index.html The link above you will see at 3/4 from the top my exhaust system ( at this moment the cat is not there and it is only a tube). The last muffler is the original BMW type. Hope someone off you have some tips for me. Stef Steph and his dad are building the KR-2S see http://www.masttotaalconcept.nl/kr2 http://www.masttotaalconcept.nl/kr2 _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/[email protected]/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to [email protected]
