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JR servo horns - 6/25/2008 9:34:53 PM   
Stick 40


 

Posts: 261
Joined: 6/7/2003
From: quincy, MI, USA
Status: online 		I bought a Hanger 9 J3 cub used from a LHS . It has 4 JR servos and a Hitec (for rudder). All the servo horns look alike and I know one way or the other something is wrong. The JR horns have a offset too them and I have never seen a Hitec horn have that off set. Is there a way to tell if the horns are JR or Hitec???????

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I''m a man, I can change, if I have too, I guess. "Red Green"
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RE: JR servo horns - 6/25/2008 9:51:20 PM   
Stick 40


 

Posts: 261
Joined: 6/7/2003
From: quincy, MI, USA
Status: online 		OK, I think I found the answer already. Went back and looke at some old posts and found that the hitec do not fit the JR. and they don't.

new question do the JR's have a funny offset to thier horns, all or some????????

Is thier a count to the teeth to tell?

thanks

_____________________________

I''m a man, I can change, if I have too, I guess. "Red Green"

(in reply to Stick 40)
       Post #: 2

RE: JR servo horns - 6/26/2008 12:05:14 AM   
The Ghost



Posts: 864
Joined: 3/18/2004
From: UlladullaNSW, AUSTRALIA
Status: offline
quote:

do the JR's have a funny offset to thier horns, all or some????????


Only on some.

quote:

Is thier a count to the teeth to tell?


It is the dia of the shaft. As far as I have come across they have the same splines, only dif dia.

Cheers

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Remember, Always look after the ORGANIC part of the model

(in reply to Stick 40)
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RE: JR servo horns - 6/26/2008 1:09:51 AM   
Stick 40


 

Posts: 261
Joined: 6/7/2003
From: quincy, MI, USA
Status: online 		Ya you are right. I did some testing and there was a JR horn on the Hitec servo setup for the elevater!!!!!!!

Glad I checked it, I could have lost a new plane on the first flight. I plan to change it over to all Hitec servos. I will put a hitec horn on the one that came with it and not use the JR's. I don't need a bunch of different servos around. I have my old Futaba's and now Hitec, I am marking all my Hitec servo horns.

wonder why they dont put thier marks on the horns for thier servo's, you know like F= Futaba JR= JR, etc. and thing to help us keep them stright..

_____________________________

I''m a man, I can change, if I have too, I guess. "Red Green"

(in reply to The Ghost)
       Post #: 4

RE: JR servo horns - 6/27/2008 3:31:48 PM   
XtremeAerosport



Posts: 466
Joined: 12/15/2001
From: Lewes, DE, USA
Status: offline 		I don't think the JR servo arms have any actual offset to them. They just look like they do because of the funky shape. Lay a straight edge across the holes and if they all line up while bisecting the output shaft hole, then there is no offset.








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Jonathan Ott
Extreme Aerosports

(in reply to Stick 40)
       Post #: 5

RE: JR servo horns - 6/27/2008 5:19:40 PM   
Stick 40


 

Posts: 261
Joined: 6/7/2003
From: quincy, MI, USA
Status: online 		Yes, I see what you mean. I was sure they were JR, but I went up the LHS and jerry agreed they were JR horns. I picked up some more Hitec 425's, will stick with them.

Real glad I did not fly that cub with the hitec servo and a JR horn!!!!!!!!!

I'm not going to keep those two JR's , don't keen more problems

thanks

_____________________________

I''m a man, I can change, if I have too, I guess. "Red Green"

(in reply to XtremeAerosport)
       Post #: 6

RE: JR servo horns - 6/27/2008 6:08:49 PM   
jaka


 

Posts: 4524
Joined: 12/11/2001
From: Upplands Vasby, SWEDEN
Status: offline 		Hi!
JR has 23, Hitec 24 and Futaba has 25 spines on the output axle/servo horns.

_____________________________

Jan Karlsson Airracing products
MVVS, Motul "Micro" all synthetic oil

(in reply to Stick 40)
       Post #: 7

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