RE: Old Soviet Union MDS 10cc engine
I saw in the instruction you added in the last post, also i can read russian. The engine are made to run at FAI fuel (zero nitromethan), first running-in the engine who has 75% methanol and 25% castor oil (add extra oil to FAI fuel), first 7000 +- 1000 rpm in rich 10-15 minutes, then running in 40-60 minutes at normal running (no full power). The main needle unscrew out 3-5 turns before starting. Propeller size unknown since the instruction say 4 propeller was in the set togheter the engine from factory.