VaidotasR

On 14/02/2021 at 21:05, Bob27 said:

I recently ported and polished a radne 120 along with ceramic coating the cylinder head and piston. I also removed some access casting material saving about 200 grams of weight.

During a thrust test it came in at 85lbs (38kg) thrust, but I am 5000 feet above sea level. Based on other engines we have tested at both 5000' and sea level, this would equate to over 110lbs (50kg) measured thrust at sea level. I still haven't tuned the carb after porting the engine so I expect it is capable of even more than that.

I am going to switch to a Minari 200cc or electric so my ported radne is for sale.

Can you tell me where the raket cylinder needs to be modified? What is the thrust gain?

My Raket also have 44kg of thrust at 8300rps and 1,3m eprops propeller. 3,3lph.

I want a bit more, around 55-60kg of measured thrust, light and economic engine. 

If not an Atom80, then what?

EOS? Not reliable...

Moster? Way heavier and thirsty.

Thor 130 evo? 60kg thrust. Anybody know fuel consumption numbers?

Sky110s?

RickH: I don't think 300rpm would give more than a few kg of thrust.

I'm looking for some real life thrust numbers of Atom80 engine. Are those numbers in manufacturer site close to reality? 

Thinking it would be nice to swap my current motor raket120 with atom80, but not sure about the benefits.