RE: RCG 26cc - Anyone using this engine?
FWIW, I now have 3 of these RCG/Hobby King 26's as well as an Evolution 26 (read Horizon Hobby $499) and an OS 33GT and I would put the RCG's up against an Evolution or DLE any day of the week but not the OS, it is in a class above the 26's. I was really reluctant to make the jump to the inexpensive motors till a club mate bought one for me to install on his airplane, I did so with much reservation till I started it and flew it the first time. I put about 6 flights on it wringing out the new plane and fell in love with the motor. I ordered 1 to try myself in a Pulse 125XT and now have 2 more for other projuects. The motor starts perfectly even when cold soaked and after setting the needles it hauls the pulse around identical to the DLE30's at our club in the same airframe.
Are these motors a replacement for the better supported and higher quality motors - ABSOLUTELY NOT.
Would I recommend them to someone - Depends, if they have some experience with gas motors and can do a little tinkering to get the "perfect" the yes but if they are new to the gas engines then I would suggest they go with a more popular and better supported motor till they get their feet wet.
In short, I am now running 3 of the 26's and a few of the 50's from Hobby King (the 50's btw are actually 55.6cc measured) and am very happy with them. They are rough with no pretty machine work, they have "taillight" warranties which means once they leave the factory they are your problem, there is no such thing as customer support but if you have an airpalne you love to throw around down low and dirty and will likely take a dirt nap long before the engine wears out then these may fit the bill. I lost a scratch built Waco with an Evolution 26 in it due to a battery failure and for what it would cost to repair the damage to the Evolution I can purchase a new RCG with money left over.