SMALL - Telemetry SMALL - Radio
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Old Oct 23, 2005, 01:19 AM
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Full vectorial Thrust.

Some Ideas to make a full vectorial thrust pusher electric plane.

what do you think about it?.

Manuel V.
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Last edited by manuel v; Oct 23, 2005 at 12:42 PM.
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Old Oct 23, 2005, 01:32 AM
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Quote:
Originally Posted by manuel v
what do you think about it?.
I think that bottom drawing is going to spin that ball around in its socket and twist up your control rods like bread-ties.
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Old Oct 23, 2005, 01:50 AM
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riffrafff.
You are right. my first option is the upper draw.
thaks for your observation.
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Old Oct 23, 2005, 01:51 AM
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On the upper version... the servo that moves it in the slot should be on the hinged piece to prevent inadvertant mix effect.

The lower one reminds me a bit of an old Buick's remote operator for the side mirror. It has some potential. Its not hard to add a couple of guide pins and slots to the ball to prevent it from spinning.
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Old Oct 23, 2005, 02:09 AM
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fhhuber506771

Thank for your comments.

Another idea.
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Old Oct 23, 2005, 07:51 AM
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try placing your pivots as close to the ballance points of the motor with the prop fitted,it will less strain on servos,think of a gimbal type setup like what is used on marine compass, just a suggestion thats crossed my mind on more than one occasion
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Old Oct 23, 2005, 07:52 AM
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Believe it or not, there's a LOT of force on the motor mounting system, even on the little electrics. The main forces are due to gyroscopic effects while the model is pitching or rolling. If you pitch the model you'll get a gyroscopic force on the prop in the yaw axis, and vice versa. You can actually HEAR the gyroscopic effects when you do a wall, snap, etc... Try holding a motor that is mounted to a false firewall... run it up and move it around.

These forces are strong and will undoubtadly overcome most small servos... you'll need a lot of holding power to keep the motor where you want it.

Good luck,
Jason
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Old Oct 23, 2005, 10:14 AM
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Agreed on that ,they would need to be high torque for sure
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Old Oct 23, 2005, 04:16 PM
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Thanks for the pointers. Jason.

Olmond. I put a figure 4. with same idea +,- . what do you think?
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Old Oct 23, 2005, 05:03 PM
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The main reason i stopped thinking about such a system was what happens with power off to the motor
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Old Dec 09, 2012, 12:27 PM
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Nice item from HK.
http://www.hobbyking.com/hobbyking/s...Outrunner.html
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Old Jul 03, 2015, 09:31 PM
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Cuando uno tiene una idea, no debe uno abandonarla, hay que estudiarla hasta el final. esto propuesto en este foro es tan comun que es increible que haya tenido detractores.
No cabe duda, para avanzar, hay que romper paradigmas.
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