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Engine basics => Engine set up tips => Topic started by: bob whitney on December 17, 2019, 12:33:14 PM

Title: fuel for PA75
Post by: bob whitney on December 17, 2019, 12:33:14 PM

what is a good fuel mix for the PA75

Title: Re: fuel for PA75
Post by: Brett Buck on December 17, 2019, 01:47:55 PM

Quote from: bob whitney on December 17, 2019, 12:33:14 PM

what is a good fuel mix for the PA75

  Powermaster RC "Air" (18% 50/50 oil), or Powermaster RC "Air" with David's mix of added synthetic and castor to get it to 22%. I think David usually runs 10% nitro at sea level, and 12.5% at Muncie.

   SIG is not recommend due to the "tater" issue.

    Brett

Title: Re: fuel for PA75
Post by: RandySmith on December 17, 2019, 03:09:25 PM

Quote from: bob whitney on December 17, 2019, 12:33:14 PM

what is a good fuel mix for the PA75

whatever  fuel  you buy or make use    20 % oil  with mostly synthetic, I would not use over  1/4 of it being castor . Many make their fuel and  use  Super Techniplate, which is 25% castor, Use  5% in cooler months, and ... IF... is needed.  then go to 7.5%  , 10%, Sig is  oK  but NOT  SIG Champion, as it has  way too much castor in it, and  as Brett  said  will tater up badly,  I have used a lot SIG 4 Stroke fuel, with 2 ounces castor added

Randy

Title: Re: fuel for PA75
Post by: bob whitney on December 17, 2019, 05:36:32 PM

thanks guys ,RAD