RunRyder RC Helicopter Topic - advice for 90ing the servo arms

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Main Discussion > advice for 90ing the servo arms

AllJeep
Heliman
Location: East Coast

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I am having some trouble getting my servos to 90 degrees.

I have Futaba BLS 252 servos and tried 3 different servo arms. None of which allow me to install the arms at 90 degrees with out adding about +50 of sub-trim.

The problem I have is if I add that much sub-trim it doesn't leave me with much throw in one direction.

Any suggestions?

07-03-2009 07:39 AM

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f penfold
Key Veteran
Location: uk

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You should still be getting equal trow each way with that much sub trim.What radio are you using? And have you spun the arms so you have tried all four points . one of them should get you close enough to 0 .
Make sure you do not have any trim in the servo and then make sure all your sticks are centered while your doing this.That means that you throttle is at 50 in 50 out. 50 is imho two high of a number so play around with it and you will get it.

I know I used lock tight why did my head explode

07-03-2009 08:40 AM

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JetFire
Key Veteran
Location: The Golden STATE

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Another option... is purchasing yourself some Align servo wheels. They're great and you can keep rotating them until you get your 90.

Trex700N Pro
Spartan/DS620
Futaba 7C2.4

-The ONLY way you fail is when you quit.-

07-03-2009 09:00 AM

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JRjoe
Elite Veteran
Location: Portage, IN USA #1

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You might try using round wheels and then drilling the holes in the correct position. Works for me.....

JRjoe
Indoor plumbing??? No, we don't need that!!!

07-03-2009 02:51 PM

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TMoore
rrProfessor
Location: Cookeville, TN

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Since the splines are asymmetrical, did you rotate the arms to get the best location or did you just cut them and put them on?

TM

I thought I wanted a career, turns out I just wanted the paychecks.

07-03-2009 04:00 PM

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AllJeep
Heliman
Location: East Coast

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These aren't the star type arms. The are metal arms with only one side.

Kind of like this,

07-04-2009 03:06 AM

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rc.chris
Senior Heliman
Location: brunswick, ga. 31525

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+1 for the Align servo wheels! I have then on all my nitro heli's!

http://www.jaxrc.com

07-04-2009 03:10 AM

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TMoore
rrProfessor
Location: Cookeville, TN

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Quote
These aren't the star type arms. The are metal arms with only one side.

That's the problem, with the metal arms you have no control over where they broach the spline relative to the arm so IMHO, these are a waste of time except on a plank where it makes virtually no difference.

TM

I thought I wanted a career, turns out I just wanted the paychecks.

07-04-2009 03:52 AM

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evo4ever
Senior Heliman
Location: kenna w.v.

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Agreed metal arms are for looks on a heli. The Align wheels or futaba wheels that you drill yourself are the way to go.
Devan

07-04-2009 05:14 AM

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Main Discussion > advice for 90ing the servo arms

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