Synergy Tech Support

Electronics Setup Information => Setup Info => Topic started by: Jabird on December 16, 2012, 10:33:53 AM

Title: Tail rotor servo arm distance.
Post by: Jabird on December 16, 2012, 10:33:53 AM

Just a question. How many mm are you guys out on the servo arm on the tail rotor, and able to achieve max throw with regards to not stalling out the tail? I am running a cgy750, futaba servo and os55 hz engine. I cant get much more without binding the pushrod on the fanshroud and the engine needle. I have flipped the ball on the rear pivot. But I am missing alot of throw with regards to not being able to up my rates in the CGY for tail servo throw.. Am i just missing the obvious, or is there another trick. Im at the 3rd hole out on a 4 star servo horn, arm pointed down. This is on an N5c


HELP A BROTHER OUT..

Title: Re: Tail rotor servo arm distance.
Post by: James Mineo on December 16, 2012, 01:22:29 PM

Hey Jabird,

Check out page A43 of the N5c manual and you'll see that you are supposed to use the 4 arm servo horn with the pivot ball installed in the last hole (16.5mm).

Now set everything to 90° mechanically, make sure to set your servo horn at 90° with the servo at neutral. Once you are satisfied with the mechanical, initialize the CGY750, go into the Tail Gyro (basic) menu, and set your limits. They should end up around 100.

Remember, on the N5c it is not necessary for the pitch slider to hit the right radial bearing in the tail case. At this point, the tail blades are pretty much stalled. So stay around 100/100 on your limits and you should be fine.

I hope this helps. Let me know if you have any other questions.

James

Sent from my EVO using Tapatalk 2

Title: Re: Tail rotor servo arm distance.
Post by: Jabird on December 16, 2012, 07:54:35 PM

I know that's what the manual states, but if I do that I hit on the carb's  needle? So I was wondering what others have done.

Title: Tail rotor servo arm distance.
Post by: flyalan on December 16, 2012, 08:01:26 PM

You can loosen and slightly turn the carb counterclockwise as you look down on it. This will lower the needle just a bit and should give you some clearance.
Hope that helps.

Alan

Alan Butler
Team Synergy

Title: Tail rotor servo arm distance.
Post by: Kevin Dalrymple on December 16, 2012, 08:33:15 PM

I have my servo ball flipped like you have and the ball at the 4th hole out. No binding on the carb. It is close. I might have moved the carb a little down as others have suggested.

Title: Tail rotor servo arm distance.
Post by: Kevin Dalrymple on December 16, 2012, 08:36:42 PM

You need to be in the outer hole on a futaba 4 star horn. I have tested both holes and the tail will not hold as good in the 3rd hole. You will notice this in a fast backward flight or a tail slide. Be careful if you fly in the third hole.

Title: Re: Tail rotor servo arm distance.
Post by: Jabird on December 17, 2012, 01:31:41 PM

ill try twisting the carb a bit.

Title: Re: Tail rotor servo arm distance.
Post by: Ross Lawton on December 19, 2012, 06:16:49 AM

Hi Jabird,

Just following up on this thread, did you manage to get everything sorted?

Cheers,
Ross

Title: Re: Tail rotor servo arm distance.
Post by: Jabird on December 29, 2012, 06:37:26 PM

yep, got er all sorted out. did a little twisty on the carb. Now im free and clear the whole way.