News:



  • June 16, 2024, 02:49:15 AM

Login with username, password and session length

« previous next »
Pages: [1]   Go Down

Author Topic: Ball Link Problem  (Read 5473 times)

Offline Larry Borden

  • 24 supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 153
Ball Link Problem
« on: February 18, 2015, 07:47:50 AM »
I'm building a Mackey ME 109 from scratch, other than a rib set from RSM. I'm using the Du-Bro heavy duty ball link on the flap horn. There is not enough room to put another ball link on the horn for the elevator push rod. Has anyone used the smaller ball links? There is enough room for the smaller link for the elevator rod using one of the smaller ball link.
Any problems using the small one? Using RSM control horn.
Logged

Offline Alan Resinger

  • Trade Count: (0)
  • Captain
  • *****
  • Posts: 579
  • Welcome to the Stunt Hanger.
Re: Ball Link Problem
« Reply #1 on: February 18, 2015, 10:17:33 AM »
Larry,
Can't you put the link on the other side of the horn?
Alan Resinger
Logged

Offline Tim Wescott

  • 2016 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 12832
Re: Ball Link Problem
« Reply #2 on: February 18, 2015, 10:23:38 AM »
It imparts a twisting moment to the flap horn, but that's what I did on my current ride, which has over 500 flights on it with no signs of wear.
Logged
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Larry Borden

  • 24 supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 153
Re: Ball Link Problem
« Reply #3 on: February 18, 2015, 10:47:21 AM »
I'm using nylon insert nuts and there's the problem.  Not enough room because of the nut.  Could use loctite and regular nut. The swivel ball links fit.
Logged

Offline Allan Perret

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1892
  • Proverbs
Re: Ball Link Problem
« Reply #4 on: February 18, 2015, 10:50:25 AM »
You could make a custom horn with the two holes offset fore & aft to get needed clearance.  This also helps with control linearity.  
What are the Dubro numbers for the two ball links in question ?
Logged
Allan Perret
AMA 302406
Slidell, Louisiana

Offline Chris Belcher

  • Trade Count: (0)
  • Commander
  • ****
  • Posts: 242
Re: Ball Link Problem
« Reply #5 on: February 18, 2015, 11:24:00 AM »
Ran into the same prob with a nobler and oriental. Tom Morris has some good clevises to go back there. Some dont trust em but i've got hundreds of flights on both with no issues.  i wouldnt use just any ol clevis but the ones Tom sells are the best i've seen. Not sure what brand they are but give Tom a call..he's in the vendors corner under stunthanger i believe. Very nice guy and has always been willing to help...
Logged

Offline Chris Belcher

  • Trade Count: (0)
  • Commander
  • ****
  • Posts: 242
Re: Ball Link Problem
« Reply #6 on: February 18, 2015, 11:26:42 AM »
Sorry..its TOMS BUILDING SERVICE and then theres a link to his catalogue...great stuff and great service!!
Logged

Offline Larry Borden

  • 24 supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 153
Re: Ball Link Problem
« Reply #7 on: February 18, 2015, 11:39:41 AM »
Swivel is 497
Heavy 899
Logged

Offline Tim Wescott

  • 2016 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 12832
Re: Ball Link Problem
« Reply #8 on: February 18, 2015, 12:04:33 PM »
Quote from: Larry Borden on February 18, 2015, 10:47:21 AM
I'm using nylon insert nuts and there's the problem.  Not enough room because of the nut.  Could use loctite and regular nut. The swivel ball links fit.

If it's the 4-40 thread stuff you can get two sizes of nut: one's 1/4" across the flats, the other's 3/16".  I have the small nuts on my Twister, with loctite, and it's working fine (I feel strange giving serious advice based on a Twister.  But dammit, I'm flying in Expert and I'm going to replace that thing as soon as possible!)
Logged
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Allan Perret

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1892
  • Proverbs
Re: Ball Link Problem
« Reply #9 on: February 18, 2015, 12:30:20 PM »
Quote from: Tim Wescott on February 18, 2015, 12:04:33 PM
If it's the 4-40 thread stuff you can get two sizes of nut: one's 1/4" across the flats, the other's 3/16". 
You got a source for the 3/16" across flats.
Logged
Allan Perret
AMA 302406
Slidell, Louisiana

Offline Tim Wescott

  • 2016 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 12832
Re: Ball Link Problem
« Reply #10 on: February 18, 2015, 12:42:29 PM »
Quote from: Allan Perret on February 18, 2015, 12:30:20 PM
You got a source for the 3/16" across flats.

Um -- no?  I'm just compulsive about saving every bit of hardware that comes across my bench.
Logged
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Larry Borden

  • 24 supporter
  • Trade Count: (0)
  • Commander
  • *
  • Posts: 153
Re: Ball Link Problem
« Reply #11 on: February 18, 2015, 01:01:08 PM »
Thanks for all the help.   H^^ Got it fixed. The link that I was trying to use may have been one of the metric ones. May have picked up a metric link by mistake. The one I was try to use had a lot more material around the ball and that was the reason it wouldn't fit. Had a case of the dumba--. First time using these things.
Logged

Offline Target

  • C/L Addict
  • 2019 supporter
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 1692
Re: Ball Link Problem
« Reply #12 on: March 21, 2015, 09:59:54 PM »
Logged
Regards,
Chris
AMA 5956

Offline dennis lipsett

  • Trade Count: (0)
  • Admiral
  • ******
  • Posts: 1719
Re: Ball Link Problem
« Reply #13 on: May 11, 2015, 02:12:03 PM »
Larry,

I did this on an Oriental ARC. They have absolutely no room for almost anything back there and this was the obvious solution. Some may complain about the aesthetics of it but I am only concerned with the results.

Dennis
Logged

Offline Bill Little

  • 2017
  • Trade Count: (0)
  • Admiral
  • *
  • Posts: 12671
  • Second in COMMAND
Re: Ball Link Problem
« Reply #14 on: May 11, 2015, 03:16:19 PM »
Quote from: dennis lipsett on May 11, 2015, 02:12:03 PM
Larry,

I did this on an Oriental ARC. They have absolutely no room for almost anything back there and this was the obvious solution. Some may complain about the aesthetics of it but I am only concerned with the results.

Dennis

Hi Dennis,

I have to use "scabs" on almost ALL of the Classic models I have done with ball links.  They are basically hidden by the stab anyway! ;D

Bill
Logged
Big Bear <><

Aberdeen, NC

James Hylton Motorsports/NASCAR/ARCA

AMA 95351 (got one of my old numbers back! ;D )

Trying to get by

Offline Bill Johnson

  • 2016 supporter
  • Trade Count: (0)
  • Captain
  • *
  • Posts: 535
Re: Ball Link Problem
« Reply #15 on: May 12, 2015, 05:09:20 AM »
Quote from: Chris Behm on March 21, 2015, 09:59:54 PM
Who doesn't love McMaster Carr?
http://www.mcmaster.com/#90760a005/=wewxi5
http://www.mcmaster.com/#hex-nuts/=weww96

Regards,
Chris

If you have clearance issues, I would recommend what we call "missile nuts". McMaster Carr calls them "Jet nuts".
http://www.mcmaster.com/#hex-nuts/=x5aubr  From this link, go to "Flange Nuts", "Steel".
The MS21042 is good in all shear and tension applications up to 160K PSI and 450F. The 4-40 version is only 5/32" across the flats.
Logged
Best Regards,
Bill

AMA 350715

Advertise Here
Pages: [1]   Go Up
« previous next »
Tags:
 


Advertise Here