ORIGINAL: gulfhawkii
Hello everyone
First I would like to add thanks for the help on my Goldberg P6-E Hawk I flew it for the first time it flew right off the building board. For a OS.20 for power it took a lot of run way to get off ground a scale take off. Landing was smooth too.
Okay next question for you U-Controllers out there, I have here a kit I bought back in 1972 of the Sterling Greatlakes trainer, Calls for again 19 to 35 engines. I have a OS .15 I have not installed it yest does it have enough power to fly my Greatlakes ?. I would surmise it would prably fly slower the plane is all done except for engine installation. I,mm trying to make good use of my smaller engines i wqould hate to waste them around my house collecting dust. Thanks agine folks
Frank
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In 1966, while in the USAF, a friend of mine built Sterling's Fokker D7. I think that was in the same size range as your kit. My friend did a beautiful job of building it using silk and dope for covering and finish. But, I was dismayed when I saw the engine he had chosen to build around and into the nose of the model. It was a McCoy Bluhead .19 R/C engine. He had also made a throttle control setup that was actuated by a spring loaded bellcrank, utilizing a single line for control.
That McCoy .19 was a bear to hand start and no one had electric starters back then. I was elected to test fly the model. After finally getting the brand new engine started and adjusted, I picked up the handle to throttle up and takeoff. I didn't think it would get off the ground and I hated to see such a beautiful model destroyed on the initial flight, but my friend insisted that I fly it.
I pulled the throttle trigger and the model began rolling. It may have taken a complete lap, but it eventually lifted off and flew extremely well, but not fast. It was not a windy weather flyer, but it flew really well. That was with the engine set up very rich for break-in too.
So, do I think your PT-17 will fly with a .15 up front for power? Well, if the engine is strong and broken-in and if you build the model light and use shorter than normal control lines, yes, I think your model has a chance of flying. But I wouldn't try it in much of a wind.
Ed Cregger