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Engine basics => Engine set up tips => Topic started by: John Leidle on December 19, 2013, 07:21:55 PM

Title: My Super Tiger Stoped going Rich During Flight.
Post by: John Leidle on December 19, 2013, 07:21:55 PM

   I have a Tiger .51 that has gone rich & perplexed me for 5 years. At least it's been sitting than long because of it. So Monday I took it out & it still did some of it ,I went home, lost the small venture, ( .177")  lost the Merco NVA , put in a .204" Venturi & a PA NVA.. all hints of misrunning are gone.
   John ;D

Title: Re: My Super Tiger Stoped going Rich During Flight.
Post by: ray copeland on December 19, 2013, 08:23:55 PM

John, congratulations!!  Sometimes these things are just life's little mystery's. Next year i will start my first trials with a ST .51 on a pathfinder , hope i get it going like you did but hopefully it won't take that long.

Title: Re: My Super Tiger Stoped going Rich During Flight.
Post by: John Leidle on December 20, 2013, 02:06:43 AM

  Hi Ray, I'm sure your's will be fine,, mine was an exception  I have heard of this running richer & I've had it happed on occasion.
  John

Title: Re: My Super Tiger Stoped going Rich During Flight.
Post by: Steve Helmick on December 26, 2013, 08:37:53 PM

John, does the spraybar go through the venturi, or is it going through the drawbar hole? Mine has a .285" venturi with the .157" spraybar through. Too small a venturi will mean not enough fuel, and not enough oil to make the engine "happy".   H^^ Steve

Title: Re: My Super Tiger Stoped going Rich During Flight.
Post by: John Leidle on December 27, 2013, 02:38:17 AM

   Steve, the setup is a Trubore setup  I think I put a .209" W/spicket.