Hi, Gents.
I bought 2 CRRC 45cc motors in the last 18 months, Had trouble with the bearings on one. Took it apart, easy enough,
changed to SKF bearings, got rid of the elec. ignition, bored the needles a bit bigger and made a plug adapter for
glow plug. 6% oil and 94% methanol, and it goes like the clappers. Even converted the second one, now.
Use Klotz oil and industrial methanol, which we get here in SA. (no nitro).
They run a bit cooler and have a bit more gusto than petrol.(IMHO). Spares are available as well.
Just be carefull of the flame that shoots out, when over-primed. I learned the hard way.