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HelicopterCentury Radikal G20-30 N640 Hawk Predator › Tail Pitch Control Rod Set For The Raven .50
12-27-2008 06:52 PM  8 years agoPost 1
Buster0825

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I am at the step of installing the Tail Pitch Control Rod Set for my Raven .50 helicopter. The instruction manual is not really clear on how long to make set this rod assembly and was wondering if someone could tell me? I am using a Futaba S9254 servo with a ½ machined alum servo arm (dyn2530). Thank you in advance for your help.

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12-27-2008 07:31 PM  8 years agoPost 2
Breitenstein

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Denmark​(Scandinavia)

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On page 30 (step 40) in the manual, the length of the tail rotor pushrod is described = 823mm (center to center of the ball ends).

Jens

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12-27-2008 09:25 PM  8 years agoPost 3
Gearhead

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and step 44 tell you to set the Linkage length so the Tail's Pitch Lever is at an 8 degree angle..

Jim
Buzz Buzz Buzz

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12-27-2008 11:23 PM  8 years agoPost 4
Buster0825

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Thank you for all the help.

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12-29-2008 03:09 AM  8 years agoPost 5
Buster0825

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If I would set the pitch control rod at 823 mm then the rod would be longer than tail assembly. I am either confused or missing something. Any ideas??????

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12-29-2008 03:16 AM  8 years agoPost 6
Gearhead

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EDITED

keep in mind the servo mounts just about at the point of the tip of the Boom,, so once the Boom assembly is mounted in the frame just adjust the linkage so the Tail's Pitch Lever is at an 8 degree angle,, just make sure the Boom is all the way in the frame..

Jim
Buzz Buzz Buzz

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12-29-2008 03:19 AM  8 years agoPost 7
canbarelyhover

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Sunnyvale, CA

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Try flipping the tail servo so the wheel is towards the front.

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12-29-2008 03:21 AM  8 years agoPost 8
Buster0825

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It would be still to long.

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12-29-2008 03:24 AM  8 years agoPost 9
Gearhead

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Buster,, do you have the Holes in the Boom at the tail and the Slots in the Boom going in the frame ??

Jim
Buzz Buzz Buzz

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12-29-2008 03:28 AM  8 years agoPost 10
Buster0825

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Jim,

Yes, the holes are at the tail and the slots go into the air frame.

Thanks!
John

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12-29-2008 03:47 AM  8 years agoPost 11
canbarelyhover

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I always end up cutting it down a bit with a dremel. There is about 1 inch of thread and you only need about half that to attach the link.

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12-29-2008 03:52 AM  8 years agoPost 12
Human_Enigma

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Seattle Wa

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here's a good place to set it for starters, reguardless of the servo orientation. Servo centered and arm 90* , tail pitch arm paralell to tail shaft and 90* to boom.. then fine tune mechanically in rate mode during first few hovers..

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12-29-2008 02:39 PM  8 years agoPost 13
Buster0825

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Would it benefit me to upgrade the Tail Pitch Control Rod Set to the CARBON TAIL CONTROL ROD SYSTEM (CN2264)? If so, would the setup with the upgrade carbon tail control rod be easier to setup/change or would the one the came with the helicopter work just fine?

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12-29-2008 05:20 PM  8 years agoPost 14
Buster0825

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Just incase anyone else runs into this problem I called Heli-World and their tech support person stated that it is a miss print in the instructions and the length should be about 711.1999999999999 mm (28 in) not 823 mm (32.4015748031846 in). Thanks for everyone’s help with this.

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12-30-2008 04:25 AM  8 years agoPost 15
Human_Enigma

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Seattle Wa

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as far as the carbon tail upgrade is concerned, its not any easier to set up than the stock one persay. In fact when you assemble it you have to cut it and fit it just like the stock one to fit your application. Plus it is a one shot deal, once you cut and glue the ends on it the only adjustment you have is the amount of threads left on the link ends. It would be advisable to get the stocker dialed in and the length squared away, then after a while use the stock length as a guide for assembling the carbon upgrade if you choose to do so.

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12-30-2008 05:53 AM  8 years agoPost 16
Blade_Master1

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Canada

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I wouldn't use the carbon rod unless the servo is mounted on the boom
at least then you can slide the servo back and forth

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12-30-2008 10:31 PM  8 years agoPost 17
beavis1

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New York state

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Human_Enigma

Get rid of that romper room grey plastic ball link. Those are known to fail. The stock grey in the kit is fine but the red and grey made of that shiny soft plastic that come in the carbon rod kits have a high failure rate.

You may have the good link on there and it is just oil. If it has century stamped on it then it is a good grey. If not

Lost a preddy myself and know a host of others that learned the hard way with that link.

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12-30-2008 10:47 PM  8 years agoPost 18
Buster0825

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I am still having a problem with setting up the tail pitch control rod on the Raven .50. I hook the tail rod as it appears in the instructions but when turned on, the servo make the 'buzzing' sound. Should the ball link be attached to in inside or outside of the servo arm?

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12-30-2008 11:53 PM  8 years agoPost 19
canbarelyhover

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Sunnyvale, CA

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i noticed that too but i wouldn't get too hung up on that - my 401/9254 still buzzes a little. moving the rod guide closest to the servo back a bit sometimes helps.

i had to mount the ball on the outside. if you can mount on the inside and clear the servo case then i think it will help a little with reducing the buzzing.

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