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Home✈️Aircraft🚁HelicopterHIROBOHirobo Freya › Want to convert Freya to FBL ?
06-13-2018 11:40 PM  15 months ago
Brian C

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Houston, TX

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Photos of my converted Freya FFZ-II head, all OEM except push rods. Not trying to do heavy 3-d with it, fly's fine. Carbon pushrods from Central Hobbies 2mm pushrod kits, unfortunately they no longer make them. Stock Hirobo rod ends are stronger than I would have guessed. Washout assembly converted to swash driver, clamps onto main shaft, no set screws. Pushrod to grip is not vertical to clear bolt head in damper. Main grips are flipped upside down from stock, Control arm is now on leading edge not trailing and swash still moves up for positive blade pitch. Control rods are moved in almost 50% on servo arms to get 6 degrees cyclic to work with FBL controller.

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06-14-2018 06:29 PM  15 months ago
Goober1228

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That looks nice! Real similar to what I am attempting.
I like those linkage rods and am going to do what you did to the "hole" below the yoke. That is sweet!
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06-14-2018 06:42 PM  15 months ago
Goober1228

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I am wondering what size blades you use with that?
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06-15-2018 10:09 PM  15 months ago
Brian C

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Houston, TX

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Using 690, that was the standard length for the FFZ-II head when converted to a 90 size engine. You can get away with a little longer depending on how long your Tail Rotor blades are.
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06-16-2018 04:00 AM  15 months ago
Goober1228

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Thanks for the info!
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06-28-2018 12:09 AM  15 months ago
Brian C

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Houston, TX

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Good News, Central Hobbies is carrying the 2mm pushrods again.
Not offered in a set anymore, but you can order the rods and rod ends separately.
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Home✈️Aircraft🚁HelicopterHIROBOHirobo Freya › Want to convert Freya to FBL ?
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