o.s. 160 question

[Mark Hunt]

Jon,

I have about 31.0" from the glow plug to the back of the main body.  I am currently using a piece of old 7/8" wing tube as a header extension until I can get a header from karl mueller (the best you can get).

vp30 pump...best $35 I've spent.


Mark
  ----- Original Message ----- 
  From: JonLowe at aol.com 
  To: discussion at nsrca.org ; flyintexan at houston.rr.com 
  Sent: Sunday, June 20, 2004 9:22 PM
  Subject: Re: o.s. 160 question


  In a message dated 6/19/2004 8:04:34 PM Central Daylight Time, flyintexan at houston.rr.com writes:
    I am running the OS in intermediate as well.  I used the iron bay with some
    success, until it locked open during a sequence, flooding out the motor.  My
    setup with the regulator and greve pipe always ran rich in the midrange.  It
    got better when I lengthened the pipe, but not perfect.  With that setup it
    flew the outside loop o.k., but I always throttled up just before the very
    bottom of the loop.  As it would come up through mid range, a bit of smoke,
    maybe a cough, and away we go.
  Thanks for the info.  I too am running a Greve.  I've tried an Iron Bay regulator with a Cline one way valve after the IB vavel failed, am unsatisfied with the midrange, and am ready to go to the Perry pump. What is the length you are running on your Greve, from the glowplug, around the header, to the end of the main body of the pipe?  What prop?  I have no one around me running a similar setup, so I'm looking for a "cookbook" formula that works.

  Thanks.

  Jon Lowe
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