ORIGINAL: combatpigg
Those are some smokin' set ups!
The problem with trying to run any engine in the real high frequencies isn't just the wear and tear on parts, but on the radio gear. It even erodes unmoving parts, like the fit between the liner and the case, or the liner and the head. It even can attack bladder tanks and make them pop for no apparent reason.
So there are more troubles with taking glow to the next level in rpm than meets the eye at first glance. RPM has always been the easy way.......but there is a practical limit.
So, if a Cyclon .061 powered plane can go faster with more prop and less rpm, that sounds like a constructive [and realistic] direction to go. To make more torque, the engine will need more nitro and a compression adjustment.
The guys who are doing 150 in 1/2A C/L speed aren't doing it with ''off the shelf'' props or engines...they have quite a lot of expensive and time consuming trial and error invested in their set ups.
Yep, basically the idea is to trade off a few percent of the peak HP/RPM for a larger increase in prop efficiency. That, and to take advantage of the E-prop's thinner airfoil and aspect ratio. They are a much better prop than the glow models, just can't stand up to repeated abuse when Clem cartwheels his airplane and stresses the hub then keeps on flying-they ain't Rubber Ducky props, that's for sure.
I'm holding hope for the Profi .06.. Jim booker told me it had a lot more torque than the .049 and spun 3k faster, which I translate to mean that it allowed more lattitude with prop choice. Hope it doesn't take until I turn 50 to find out-my mold was specifically set up to take Cyclons if need be. Just wish I had a place to fly these engines[
].. I can't even fly my F5D's at my current weekend location-too many houses to be safe.