I have a Fox 36X that I bought at a swap meet.I'd like to use it on a Super Satan once it is finished.I need some info on fuel. Should I run all castor or 50/50? I'm thinking 10-15% nitro. This will be an ocassional flyer, I'll use the Pyschos for tearing up the sky. I do have one other question; When using these new engines( os .25 Tt 36) for combat, are you setting them up for a solid 2 stroke or do you keep the 2/4 break. My OS35 fp launches rich, after 10 laps or so it goes somewhat lean and runs the tank out that way. I'm using a plasic tank with hardlines(no clunk). Doesn't give the REAL lean laps at the end, just quits.Am I correct in thinking a solid 2 stroke run needs a higher oil %? My current fuel is Byron 10% w/ 20% oil(traditional mix?). I'm considering some Brodak fuel( higher oil %) or might wait and see what is available at the Nats
Thanks.

Steve 

I only tell you what we did in the 60s and 70s with these engines.  Back then, we used castor of at least 25%  content with much higher nitro content than you plan to use. They ran well on the hottest days and I never seized one up. The 36x, as you know, has ball bearings and I never had to replace them.

Fast forward 2008- I flew my  Larry Scarinzi hopped up 36xBB on my Sneeker for the first time since 1976. Yes, it required some afterun oil to free it up from the  dried varnish, but the engine ran great on a pacifier. After two flights, I  decided to let my engine guy look it over.

 After cleaning the interior varnish,  he was amazed at the condition of the internals. No rust or  wear  and great compression. All due, nodoubt,  to castor.

It's messy, smelly and not popular at any level (R/C or U/C) except with some Ukie flyers who swear it gives the the best protection.

Found the C-35 was thirstyer than the 21/35 in a stunter, Same for Combat ?

even the infernal Stalker engines are recomending 22 % , Syn. with 5 % or 1/2 castor . to taste.

Ya dina go lean on the Castor if theres heat about .

Doc, speaking from experience, that old G-21 .35 Tigre will be plenty of power for that Equalizer.  You are going to get some really hair raising flights with the right tank, fuel and prop..........TDurrill         

Matthew,  must be going racing as the Fox .36X's I had were some I used in combat.