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Author Topic: Leadout / Bellcrank / Pushrod Alignment  (Read 1015 times)

Offline Jerry Reider

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Leadout / Bellcrank / Pushrod Alignment
« on: January 03, 2010, 07:34:58 PM »
Getting my elevator at 0 and my leadouts even has always been a crap shoot to some degree for me.  I came up with a method to get this right for sure.  When I make my leadouts I always make them the same length.  I clamped a piece of 1/2 x 3/8 x 4" maple to top and bottom of the elevator/stabilizer assembly to hold the elevator at 0.  I bent a piece of about .05 music wire as shown in the picture below.  I threaded it through the end wire loops of my leadouts.  I hung the music wire fixture from a water pipe in my basement.  I then added a weight to the landing gear to get the main spar plumb.  I was able to mark and cut off the pushrod and solder the clevis into the exact location while having my elevator at 0 and my leadouts even on the ends.  Since I always start with equal length leadouts I know that my Bellcrank is also at 0.
« Last Edit: January 05, 2010, 04:29:37 AM by Jerry Reider »
Jerry

Offline Roger Vizioli

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #1 on: January 03, 2010, 08:48:37 PM »
Neat trick. Close to what I do. Sure beats the  "by guess and by God" method or TLAR system. H^^

TLAR
A term often used by Rollin.
did he get it from you, or vice versa!   ???

Roger V.
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Offline Geoff Goodworth

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #2 on: January 04, 2010, 12:38:05 AM »
Roger, TLAR has been around for a long time. I had my first argument about it in 1970. I had studied plastics technology at university and designed a plastic component for the Leyland Mini that we were building in Australia but my boss' TLAR was twice as thick as my strength calculations indicated.

We compromised by settling on a mid-point thickness and the couple of examples that I saw last year were still going fine.  LL~ #^

Cheers, Geoff

Offline Roger Vizioli

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #3 on: January 04, 2010, 07:03:56 AM »
Thanks Geoff.
My first "hearing" of the term was in the 90's.
Happy New Year!
Roger
Roger Vizioli
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Florida/Space Coast

Offline john e. holliday

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #4 on: January 04, 2010, 10:40:33 AM »
Is that as good as the "KISS" principle?
John E. "DOC" Holliday
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Offline Dick Pacini

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #5 on: January 04, 2010, 11:23:51 AM »
.......? ???
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Offline Randy Powell

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #6 on: January 04, 2010, 12:26:12 PM »
Sort of like another engineering term: SWAG.
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 Randy Powell

Offline Roger Vizioli

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #7 on: January 04, 2010, 04:37:15 PM »
Is that as good as the "KISS" principle?

yes Doc!  LL~
Roger V.
Roger Vizioli
AMA L-2408
Florida/Space Coast

Offline Geoff Goodworth

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #8 on: January 05, 2010, 03:05:19 AM »
It is so good to be able to have a bit of a laugh without acrimony.

Over the last 24 hours, I have been on on a Sydney-based political blog where three regulars have been playing a bit of a game with words that sound the same, are spelled differently and have very different meanings. It was all a game but there were still a couple of people who chose to make things unpleasant.

As I said, it is so good to be able to have a bit of a laugh without acrimony.

Thank you  H^^

Offline john e. holliday

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Re: Leadout / Bellcrank / Pushrod Alignment
« Reply #9 on: January 05, 2010, 09:04:53 AM »
What good is living if we can't have fun.  But, some people can't take what they dish out. 
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.


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