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« on: July 13, 2010, 10:38:40 PM »
prateek13
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http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10592&Product_Name=CR23L_Counter_Rotating_BL_System1100kv_

and also

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10591&Product_Name=CR23M_Counter_Rotating_BL_System1550kv_
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« Reply #1 on: July 13, 2010, 10:57:18 PM »
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When you try to make a model like this one. Do a bit of google research on 'Counter /Contra Rotating Props' and you will know why they are used.

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SpitfireContraRotatingProps.jpg
Re: where can this be used in?
* SpitfireContraRotatingProps.jpg (22.83 KB, 800x576 - viewed 223 times.)
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« Reply #2 on: July 14, 2010, 06:12:44 PM »
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'Counter /Contra Rotating Props'
First time seeing/noticing in a plane, normally used in marine applications.
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« Reply #3 on: July 14, 2010, 08:56:37 PM »
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I believe you can use a product like this :

http://www.dionysusdesign.com/product_info.php/cPath/50/products_id/185

and make a coaxial stabilized heli (like the Lama) with the above HK product (along with 2 ESCs and a gyro).  When the all-in-one receiver boards of such helis burn out, people go this route.
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