Since this 02 post I have been running a few G-62Â´s, mostly on Menz props, but recently I had the good fortune of trying out the Fiala line of props. http://www.vrtule-fiala.cz/index.php?lang=en
My current G-62 is mounted on a 1:3 scale Hostetler Tri-Pacer, weighing in at about 37lb. Engine is a stock G-62, outfitted with the newest type of stock silencer with both outlets fed into a single 15mm stainless pipe leading out the cowl, and a Toni Clark 90Â° carb elbow, making the carb face to the rear, and a carb stack.
This setup spins a Fiala 26x8 at 6100 rpm, and power is comparable to the Menz 24x10 that was used previously.
Most takeoffs are performed at about 2/3 power, with cruise being around 1/3 to 1/2 power. Full power results in a 40Â° climb which is a LOT more than the full size Tri-Pacer is capable off...:-)
Since power is more than plenty I have ordered a Fiala 26x10 prop to lower the rpm a bit, but being a lightly loading prop I may try a 26x12 to get the rpm down to about 5000 on full power.
Oh, and by the way, idle is rock steady at about 1000 rpm with almost no vibrations, and starting is the easiest I have ever tried. One or two flips with choke on, and one to three flips to start. When the engine has been run recently, one single flip usually has it puttin away again....:-)
And yes, I DO know that the ZenoahÂ´s likes to spin up to put out the most power, but over the years I have developed a taste for quiet, smooth engines, both of which are aided by low rpm and large props. And personally I like the low humming at 5K much better than a screaming engine powering away at 7 to 8K.
And if I need the extra power, IÂ´ll mount a bigger engine, also running a large prop..:-)