[hardtop351]

I have a CRRC Pro GF45I 45 cc engine converted from petrol to methanol. no changes made other than an adaptor to use a standard glow plug. this engine turns a bolly 20x8 carbon prop at 7700rpm.

it uses my own design of muffler that is separate to the engine eg...the muffler is solid mounted to the airframe. exhaust is via an engine header pipe through a flexible joiner then to the muffler.

fuel/oil ratio is 40:1 synthetic oil/ methanol.

its no powerhouse like a DA 50....but it hauls my 84" wingspan extra around no worries. all up weight is around 8kg's the engine is making around 12kg's of thrust on the ground....would expect around 14kg's thrust in the air once the prop unloads a little.