Hello;

In my personal experience, a good setup is;

5 Oz tank uniflow vented (adjusting lately to the consumption, probably no more than 4,5 Oz)
11x6 to 12x5 prop, depending on your taste, model weight & drag...
fuel; 22% castor 5% nitro
        25% oil (half sinthetic, half castor) 5% nitro.

In my opinion, power delivery will be OK for Super Chief, Magnum, 660 Stiletto, Maikis Indigo.

Best with average weight in the 55 ounces range.

Regards from Spain.

I bought two of the 46 SF-S's back when they were still being produced.  They weren't really popular at the time.  They're nicely made and don't weigh all that much considering its a ball bearing RC engine.  Get rid of the factory muffler and they really start to look nice. 

I ran one stock, it was more touchy then any FP.  Had needle setting issues, run aways, short runs, etc.. I hung the plane at the local hobby shop for a few years, when they moved I got the plane back and sent the engine to Lew Woolard (Silver Fox) and had him rework it.  After that we gave it a few test runs, then put it back on the same plane (a very overweight profile Magnum).  It proved to run a lot better, nice consistent, etc...  Lots of power. 

I haven't gotten to fly it much because the fields I fly off here are too rough for the wing mounted gear, but it seemed to work well with a Rev-Up 12-5, and Sig 10% Champion fuel. 

Since you've had it reworked you might want to check with Dixon for a recommended setup.

I did get the letter from Tom, and have cocidered what he recommends, I was just looking for some experienced help from someone who has actually flown it.
Years ago PAMPA Stunt news did a review of the engine but when comparing it to other .46's, they did not allow a modified version. Very unfair as some of the other engines had been modified. All they said was "it would pull most .60 size planes anywhere in the hemisphere", lotta help there.

I'm hoping Bob Dixon did the job right as per his usual fine stuff.