OS 1.4 RX Header and Pipe installation in Focus II

[Robert Harden]

Thanks for that advise, a Mueller header already at the correct dimensions would be nice.  I have the engine set at 5 degrees right thrust; is that where you have yours set?  Was wondering what the group consenses is on right thrust necessary for the Focus II.

Bob
  ----- Original Message ----- 
  From: Mike Austin 
  To: Robert Harden 
  Sent: Tuesday, September 13, 2005 6:21 PM
  Subject: Re: OS 1.4 RX Header and Pipe installation in Focus II


  Bob, I just finished a new Focus 2/wOS 140 and installed a Mueller header. If you want the exact size without fussing with bending a Macs, email him at the below. Same price as a Macs and it fits the first time. Actually it's a 3" rise if I'm not mistaken. Tell him what plane it's for and he will fix you up.

  Mike Austin
    ----- Original Message ----- Karl G. Mueller
    E-mail Address(es):
      kgamueller at rogers.com


    From: Robert Harden 
    To: discussion at nsrca.org 
    Sent: Tuesday, September 13, 2005 11:45 AM
    Subject: OS 1.4 RX Header and Pipe installation in Focus II


    I would like some advise for installing a header and pipe in a Focus II.  I have the OS 1.4 RX engine, the OS 72102100  Header and the OS T-6010 Tuned Silencer.  My problem is that the header has interference with the firewall. I don't really want to remove material from the firewall to gain clearance.  Is there another header that I could use?  My other question is if the OS Tuned Silencer is the best choice?  I also would like to know what the length should be if the tuned silencer is used.  I am planning to use an APC 17 X 13 prop and Magnum # 1  2 cycle fuel (approx 23% nitro).  All suggestions are welcome.

    Bob Harden
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