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HomeAircraftHelicopterAlignT-REX 600N › Which FBL balls for the swash plate????
10-08-2012 07:15 AM  5 years agoPost 1
BladeStrikes

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Shelby TWP,Mi

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Im putting new FBL balls on the swash plate because mine need replaced,talking about the 2 that the link rods from the grips connect too..Well I have a bunch of the short ones from older flybar 600's but the ball links pop onto the balls too easy and there pretty loose/sloppy ..Are the short balls that come with part number HN6116 bigger so the ball link fits tight around them??

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10-08-2012 02:33 PM  5 years agoPost 2
NQNA

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USA

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You will need 5mm balls (700 size) instead of the stock 4.75mm balls to fit the links, but I don't know the correct length. I have the same problem as you with my 550.

The stock length is 9.77mm for the entire ball. All I can find/have are 12mm or 10.5mm.

I think you need (m3x3) 5x9.77mm to have the exact same geometry. The (m3x4) 5x10.5mm will be .27mm shorter at ball center and the (m3x4) 5x12mm will be 1.23mm longer.. If my math is correct..

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10-08-2012 04:40 PM  5 years agoPost 3
BladeStrikes

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Shelby TWP,Mi

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Would these be the ones needed,says the ball is M3x3.5 ?

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10-08-2012 05:51 PM  5 years agoPost 4
NQNA

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USA

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I am using these..

Linkage ball B(M3x4) × 2(Φ5x12mm) H70121 or HN7065

They are the top ones in the photo.

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10-08-2012 09:19 PM  5 years agoPost 5
NQNA

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USA

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The 12mm were too long for the AR7200BX cyclic ratio. I'm using these instead M3x3.5 5x8.5mm.

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10-22-2012 04:31 PM  5 years agoPost 6
John Davis

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St. Cloud, Florida - USA

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If you are using the Align FL head then the swash will have four balls on the top swash ring. Two large balls and two smaller balls. The two large balls use 700 size ball links and rods that go up to the blade grips. The two smaller balls on the swash connect to the radius arms. If you have connected the radius arms to the large balls at some point then you will need to replace the radius arms as the holes for the ball will be stretched oversize and be to loose for the smaller balls.

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HomeAircraftHelicopterAlignT-REX 600N › Which FBL balls for the swash plate????
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