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Engine basics => Engine set up tips => Topic started by: Peter Nevai on March 01, 2021, 03:50:31 AM

Title: OS 46VF break in
Post by: Peter Nevai on March 01, 2021, 03:50:31 AM
Hi Randy, I gather the 46 VF I sent you to have new bearings and the ABC piston and liner installed will need to be broken in again. What would the best way to do this? Thanks
Title: Re: OS 46VF break in
Post by: RandySmith on March 01, 2021, 11:28:42 AM
Use fuel with 20% oil, mostly synthetic, 75-25  or so, Run it with a 11 x 4 prop, run the fastest 4 cycle it will run in, then turn the needle just into a 2 cycle for 10 seconds at a time. rotate back and forth between the 2 setting, I would run 4 ounces at a time, and try to use 1/2 gallon of fuel. When you decide  to run it in a plane, use a 12 to 12 1/4 x 4 to 4.25  prop 2  blade  or  11.5 to 12 inch  3 blade  with about  4.5 pitch.  We burned  about 5.5   to 6 ounces of fuel  piped, and a little  less  run on a muffler, Use a  hot  glow plug, like a  Glow Devil 300, big bore hot, etc

Randy
Title: Re: OS 46VF break in
Post by: Peter Nevai on March 10, 2021, 06:32:34 PM
Use fuel with 20% oil, mostly synthetic, 75-25  or so, Run it with a 11 x 4 prop, run the fastest 4 cycle it will run in, then turn the needle just into a 2 cycle for 10 seconds at a time. rotate back and forth between the 2 setting, I would run 4 ounces at a time, and try to use 1/2 gallon of fuel. When you decide  to run it in a plane, use a 12 to 12 1/4 x 4 to 4.25  prop 2  blade  or  11.5 to 12 inch  3 blade  with about  4.5 pitch.  We burned  about 5.5   to 6 ounces of fuel  piped, and a little  less  run on a muffler, Use a  hot  glow plug, like a  Glow Devil 300, big bore hot, etc

Randy

Thanks Randy. I have 11/ 4 two blade wood and 12 4.25 three blade carbon props.  I have a 6oz uniflow tank and Merlin Glo plugs. Is the merlin plug good? It wil be on a pipe.
Title: Re: OS 46VF break in
Post by: RandySmith on March 11, 2021, 08:50:52 PM
Thanks Randy. I have 11/ 4 two blade wood and 12 4.25 three blade carbon props.  I have a 6oz uniflow tank and Merlin Glo plugs. Is the merlin plug good? It wil be on a pipe.

The Merlin  2004  and  2005  are  good  for this engine,  i would  break in with the  11 x 4  2  blade

Randy
Title: Re: OS 46VF break in
Post by: Leonard Bourel on December 17, 2022, 03:22:15 PM
Thanks I got the answers i needed Len