That's right . The Stalker 51 compares nicely power wise to a ro-jet 40 on pipe. Definately less power than a PA 40 on pipe , but for a beginner ,who doesnt want to go through the learning curve and expense associated with tuned pipes , is a good choice. Actually on my two Oriental Plus planes I ended up with nose weight , so the Stalker 61 might be even a better choice , if you subscribe to the common theory that bigger is better . You would still get a nice 2-4 break , which is what Stalkers do so well , and on very little fuel . My 51 needs 3 1/2 ounce of 10 % with the .300" ventury that is supplied , and in the hot weather ,if I use a .310" venturi it needs about 4 ounces of 10%. Also the Oriental Plus is one very easy build, (kit or plans)
Keith Varley