Notices
RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

Servo Horn Screws?

Old 07-25-2013, 05:02 PM
  #1  
drube
Thread Starter
 
drube's Avatar
 
Join Date: Sep 2009
Location: North Port, FL
Posts: 1,647
Likes: 0
Received 0 Likes on 0 Posts
Default Servo Horn Screws?

Hi guys,
This is the first time i've had to mount a servo horn this way. What kind of screws / nuts and bolts do I use to mount my servo horn? Where do I get them and what size are they? They also look like Allen head bolts. I have the exact same horn that's in the pic.

Thanks


Old 07-25-2013, 05:12 PM
  #2  
BuschBarber
Senior Member
My Feedback: (2)
 
Join Date: Jan 2002
Location: Rochester, NY
Posts: 4,756
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?


ORIGINAL: drube

Hi guys,
This is the first time i've had to mount a servo horn this way. What kind of screws / nuts and bolts do I use to mount my servo horn? Where do I get them and what size are they? They also look like Allen head bolts. I have the exact same horn that's in the pic.

Thanks

[img][/img]
I am guessing these servos have metal gears. The type of servo arm does not necessarily have anything to do with the screw used to hold the arm on. Microfastners is a good place to look for socket head servo arm screws. They carry metric as well as sae sizes. Just call them and give them the servo model. You could also ask the servo mfg.
Old 07-25-2013, 05:20 PM
  #3  
drube
Thread Starter
 
drube's Avatar
 
Join Date: Sep 2009
Location: North Port, FL
Posts: 1,647
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?

I don't understand why they would need to know the servo make and model? I'm looking for the 4 Allen head screws which could be used on any servo I would think. I will try microfastners to see what they have.
Thanks
Old 07-25-2013, 05:49 PM
  #4  
karlik
Senior Member
 
karlik's Avatar
 
Join Date: Aug 2008
Location: Spanaway, WA
Posts: 784
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?

That looks like a custom control horn mounted to a standard all round horn with 4 screws? If so, the allen head screws would be the same size as a ball link.
Old 07-25-2013, 05:54 PM
  #5  
BuschBarber
Senior Member
My Feedback: (2)
 
Join Date: Jan 2002
Location: Rochester, NY
Posts: 4,756
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?


ORIGINAL: drube

I don't understand why they would need to know the servo make and model? I'm looking for the 4 Allen head screws which could be used on any servo I would think. I will try microfastners to see what they have.
Thanks
I thought you were referring to the scree that holds on the servo arm to the servo output gear. I understand now that you meant the bolt on adapter arm.
Old 07-25-2013, 05:57 PM
  #6  
drube
Thread Starter
 
drube's Avatar
 
Join Date: Sep 2009
Location: North Port, FL
Posts: 1,647
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?

Yeah, this is the first time i've seen these horns. It's what came with my Aerobeez 30cc Sbach. I agree that it's mounted on a round horn, I will check to see if my ball link screws will fit.. They may be too long though.
Thanks
Old 07-25-2013, 05:59 PM
  #7  
drube
Thread Starter
 
drube's Avatar
 
Join Date: Sep 2009
Location: North Port, FL
Posts: 1,647
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?


ORIGINAL: BuschBarber


ORIGINAL: drube

I don't understand why they would need to know the servo make and model? I'm looking for the 4 Allen head screws which could be used on any servo I would think. I will try microfastners to see what they have.
Thanks
I thought you were referring to the scree that holds on the servo arm to the servo output gear. I understand now that you meant the bolt on adapter arm.
No prob. I could have explained it better..lol

Old 07-25-2013, 06:27 PM
  #8  
drube
Thread Starter
 
drube's Avatar
 
Join Date: Sep 2009
Location: North Port, FL
Posts: 1,647
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?


ORIGINAL: karlik

That looks like a custom control horn mounted to a standard all round horn with 4 screws? If so, the allen head screws would be the same size as a ball link.
I just checked and the ball link screws that came with the plane are too big.

Old 07-26-2013, 12:42 AM
  #9  
A.T.
Senior Member
 
Join Date: Jul 2002
Location: Auckland, NEW ZEALAND
Posts: 2,581
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?


ORIGINAL: drube Hi guys,
This is the first time i've had to mount a servo horn this way. What kind of screws / nuts and bolts do I use to mount my servo horn? Where do I get them and what size are they? They also look like Allen head bolts. I have the exact same horn that's in the pic.
Thanks
Use 2.56 DuBro screws and locknuts or, depending upon type and thickness of lower arm, small sheet metal screws
. Servo - Horn Arm Extension - DIY Alloy, FRP, CF & Nylon
. Servo - Horn Arm Spline Count and Inter Brand Compatibility

Much more information available under sub section
"Servo - Alterations, Calculators, Databases, Leads, Repairs, Convert to an ESC or winch & FAQ."
below
"Radio Systems, Accessories, Alterations and FAQ" at
Alan's Hobby, Model & RC FAQ Web Links

Alan T.
Old 07-26-2013, 03:14 AM
  #10  
drube
Thread Starter
 
drube's Avatar
 
Join Date: Sep 2009
Location: North Port, FL
Posts: 1,647
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?

Thank you! 2.56 it is then.
Old 07-31-2013, 07:12 AM
  #11  
raptureboy
 
raptureboy's Avatar
 
Join Date: Dec 2005
Location: Kempton PA
Posts: 2,620
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?

Why not just use a std servo arm like everyone uses?
Old 07-31-2013, 07:24 AM
  #12  
AMA 74894
Moderator
My Feedback: (1)
 
AMA 74894's Avatar
 
Join Date: Jun 2002
Location: Spicer, MN
Posts: 1,212
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?

I used those on a 50CC Commander (review should be published here over the next couple days)
one thing I did slightly differently, your mileage may vary:
I installed the screws from the bottom of the servo arm, with the nuts on top. (the nuts are where the screw heads are in your pic)
this eliminates the possibility of the screws interfering with the servo body (if they are too long) and makes it obvious if a nut should come loose and fall off.
(use locktite on them too )

Raptureboy: these are used on larger airplanes where a longer servo arm (than standard) is desired. they're typically stronger too.
Old 07-31-2013, 07:56 AM
  #13  
drube
Thread Starter
 
drube's Avatar
 
Join Date: Sep 2009
Location: North Port, FL
Posts: 1,647
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Servo Horn Screws?

Thanks, that makes sense to put the nuts on top.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.