I've reviewed and used many gas engines in this size and I suggest two. #1 is the Zenoah G-26 with no electronic ignition. I run mine on 32:1 ratio and I'm swinging a 16x8 at around 8000rpm. With the magneto ignition they're a snap to install and setup, easy to run, and with their extra weight they usually take care of any balancing issues you may have. I have mine on my Giant Big Stick and it's a great performer with no headaches. #2 is the SPE 26 if you just must have electronic ignition. I run mine on the same prop and gas mixture as the Zenoah and they're goof proof. One nice extra about the SPE is that it has a choke but it's also about a pound lighter than the Zenoah. If you go with the SPE you'll probably end up adding nose weight for balancing. I had an SPE 26 on the nose of my CMPro AT-6 and my Flyboy Models BV141-B and they performed great. Both of these engines can usually be had on RCU for under $200 shipped.

I have had both an EVO26 (electronic ign.) and a Zenoah26 (magneto). They both ran great and turned an 16 x 8 at about 8 grand. Both were mounted inverted. I am not sure about others but my EVO26 required a starter while the Zenoah could be hand flipped.

Definitely some great info fellas. I appreciate you taking the time to share that with me and anyone else who reads this thread.

I must admit, figuring out what engine to buy is not at all easy.

Frank