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Esprit Model . Thunder Power RC . Mikado Modellhubschrauber

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Scale Model RC Helicopters > Scale flybarless servo selection S9252 or S9255 700mm blades
 
 
HS10Senior Heliman - Location: Elk River, MN - My Posts This: Topic  Forum
Hi Folks

I currenty have S9252 servos on my flybarless 700mm scale Jet Ranger...

One servo is starting to act up (twitching & noise)

Are S9252 servos a resonable selection for this application???



Logo 14/24 (Agusta 109A-MKII) (MH-6 Little Bird) (OH-58A) Navy - Retired
06-29-2009 11:54 PM
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marc28
Senior Heliman
Location: new york

My Posts This: Topic  Forum
Their fine,I have them in my flybarless gasser
06-30-2009 12:11 AM
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FrittsLogic
Senior Heliman
Location: Honolulu, Hawaii

My Posts This: Topic  Forum
I started my FBL setup for my IonX2 with 690mm blades and the 9252's. It seemed a bit sluggish. Put on some BLS351's (stronger and faster), and the improvement was spectacular. On my 600mm helis (I use Vbar on all of my FBL birds), 9252's seem to be enough. The head gyros can command the servos faster and more often than you ever would, so the cyclic servos need to be as fast as you feel willing to spend. And since you don't have the flybar, which acts as a kind of "power steering" for the rotor disk, you need to make sure your cyclic servos are also strong enough. You will also want to make sure that your system can pump the amps to the cyclics. Consider one of the pass through regulators to help with this. Some guys doing hard 3-D have had their receivers brown out form the voltage dip caused by big current draws from the cyclic servos.

My current favorite for bigger helis are JR8717's. Very fast and very strong. I put them on my 800mm, 4 bladed Apache. I also use pass through regulators on all 600mm and up size helis.

We don't need no stinking flybars!
06-30-2009 12:13 AM
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HS10
Senior Heliman
Location: Elk River, MN

My Posts This: Topic  Forum
Great feedback...

Does anyone have experience with HS5645MG servos???

A friend has 4 of these...

Logo 14/24 (Agusta 109A-MKII) (MH-6 Little Bird) (OH-58A) Navy - Retired
07-02-2009 03:42 AM
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Futaba-RC . Boca Bearings . XHELI.COM

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Scale Model RC Helicopters > Scale flybarless servo selection S9252 or S9255 700mm blades
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