<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'><P>Bob,</P>
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<P>You are correct. There are flex headers available for gas engines. I am using those with extremely good results. The one I have now have around 500 flights with no problems. If forgot the brand now but I could find if interested. The canister should be soft mounted in the back. This allows free movement and avoid bending stresses that could break the header. </P>
<P>Regards,</P>
<P><BR>Vicente "Vince" Bortone<BR><BR>----- Original Message -----<BR>From: "Bob Richards" <bob@toprudder.com><BR>To: "General pattern discussion" <nsrca-discussion@lists.nsrca.org><BR>Sent: Tuesday, September 22, 2009 8:04:10 PM GMT -06:00 US/Canada Central<BR>Subject: Re: [NSRCA-discussion] unknowns<BR><BR></P>
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<TD vAlign=top>Don't know about DA, but I do know that one problem with soft mounting the larger engines is the muffler connection. This is not as much of an issue with headers and cannisters as it is with the standard mufflers or wrap-around Pitts mufflers.<BR><BR>--- On <B>Tue, 9/22/09, John Pavlick <I><jpavlick@idseng.com></I></B> wrote:<BR>
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<DIV>Why is that? Because it may reduce bearing life-span?</DIV>
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<DIV>John Pavlick<BR></DIV>
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