DC Gyro
05-25-2005 | 06:12 PM
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From: Lakeland,
FL
DC Gyro
Just finished a DC Gyro. Poweered by an OS 40, 18" Aero Balsa Blades. Made one flight Tuesday and it was very windy and I put it up after that flight and waiiting for a more calmer weather.. I had too much through also..
The tail feathers and rotor pylon are from Richard Anderson's crashed- modified DC Gyro.. I believe it will fly OK..
This is a 25 size gyro but I used what I had.
Jim
The tail feathers and rotor pylon are from Richard Anderson's crashed- modified DC Gyro.. I believe it will fly OK..
This is a 25 size gyro but I used what I had.
Jim
05-26-2005 | 05:02 PM
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From: Christchurch, NEW ZEALAND
RE: DC Gyro
Looks good, a .40 will be a lot of power! I modified a DC gyro to .35 power (instead of .25) and fitted rotors that give a diameter of 48 inches. Also raised the fuselage where the pylon mounts by an inch for more clearance. Photo is on my website. The old .35 gives sufficent power.
Colin
Colin
05-30-2005 | 09:43 PM
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From: King,
NC
RE: DC Gyro
I have a question. I am building the RCM DC gyro but I'm using the PT25 head and aerobalsa blades. I noticed how similar the DC and PT25 look, except for the tail. Does the DC gyro need the upturned ends on the tail? If yes, then how does the PT25 get away with out them?
Marcus
Marcus
05-30-2005 | 10:53 PM
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From: Bartlett,
TN
RE: DC Gyro
I had the same question about the upturned tips on the horizontal tail a couple of years ago when I first started tinkering with gyrocopters. The most logical answer that came along was, that back in the day of full size gyrocopters, the vertical tails were almost always on the small size due to the rotor blades extending past the tail. Therefore to gain back some of the lost vertical tail area, the stab tips were angled upwards. So when we first started with the design process for the PT Gyro, I just took the PT17 tail design (that's how we came up with the name PT Gyro)and made the tail moment just a 'tad' longer so that the rotor blades would pass in front of the vertical fin. It flew great and we never looked back. I'm pretty sure a DC Gyro will fly just fine with a flat stab...
Mark Thomas
Mark Thomas
05-31-2005 | 05:41 AM
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From: Lakeland,
FL
RE: DC Gyro
Mark,
I think you are right on.. But I am not going to cut them off to see.. Maybe they will fall off. On the same note when most make the Gyrace we add the 2 sub rudders. As recommended it Autogyro.com.. Flys OK so must be OK..
Looking forward to the Autogyro meets this year. Muncie and then Lakeland.
Jim
I think you are right on.. But I am not going to cut them off to see.. Maybe they will fall off. On the same note when most make the Gyrace we add the 2 sub rudders. As recommended it Autogyro.com.. Flys OK so must be OK..
Looking forward to the Autogyro meets this year. Muncie and then Lakeland.
Jim
