[NSRCA-discussion] OS140 Header/Pipe

[Richard Strickland]

I used one with 1.45 Bullys for several years--and it sure acted like a pipe.  'If it walks like a duck.....'  seems like we were 13-14" from the glow plug to the tangent 'high' point start.  They tended to clog up after 150-200 flights.  I had good results with everything from laundry detergent to thinner--followed by high pressure air done two-three times both directions. Some guys drilled the last baffle with a couple 1/8-3/16" holes--but I don't think that's needed.

RS
 


From: lightfoot at sc.rr.com
To: nsrca-discussion at lists.nsrca.org
Date: Fri, 6 Feb 2009 08:29:10 -0500
Subject: [NSRCA-discussion] OS140 Header/Pipe





 
I am installing a OS140RX engine and OS Header, and a Bolly MF 480 R pipe into a new (Impact) airframe. From the “Bolly Book” this appears to be more of a muffler than a tuned pipe. This model is not in the “book”.
 
Is anyone running this configuration?
 
Space is a little tight and I was thinking of cutting off some of the header but have no idea of the implications of this move. Evidently Bolly no longer produces CF pipes and I can find no specific information on this setup.
Jay Marshall 

 
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