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dmaib@me.com
Joined: 25 Apr 2006
Posts: 455
Location: New Smyrna Beach, Florida
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 Posted: Sun Jan 21, 2007 3:57 am Post subject: Pitch Trim Bellcrank Assembly |
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Worked on the trim bellcrank assembly last night and seemed to have some rotational binding of the F-1095B bellcrank when assembled. We took it apart and sanded the two thin spacer washers as instructed. We went through this drill a couple of times without much improvement. The bellcrank moves very freely on the bolt, but is still binding a bit on the spacer washers. I am wondering just how free the bellcrank should rotate. I would hate to get it to the point where I begin to have side play.
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_________________
David Maib
RV-10 #40559
New Smyrna Beach, FL |
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Tim(at)MyRV10.com
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| Posted: Sun Jan 21, 2007 6:40 am Post subject: Pitch Trim Bellcrank Assembly |
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You want that bellcrank to move pretty freely. Mine is loose
without being overly sloppy. It must be from the positional
mounting of those 2 angle pieces that caused you to have a slightly
tighter fit than normal. Mine was pretty good just with the
standard washers and no sanding. Even if you had a tiny bit
of side play, it probably wouldn't be a huge problem.
The one thing you absolutely want to watch for on this assembly
though is that you will probably find that the bolt as it
rotates thru the slot, gets very close to the frame, and could
possibly hang up if everything had enough play in it.
So you will probably want to file a bit on the frame part
of the assemby where the bolt goes through, to give a little
extra clearance.
Tim Olson - RV-10 N104CD - Flying
do not archive
dmaib(at)mac.com wrote:
| Quote: |
Worked on the trim bellcrank assembly last night and seemed to have
some rotational binding of the F-1095B bellcrank when assembled. We
took it apart and sanded the two thin spacer washers as instructed.
We went through this drill a couple of times without much
improvement. The bellcrank moves very freely on the bolt, but is
still binding a bit on the spacer washers. I am wondering just how
free the bellcrank should rotate. I would hate to get it to the point
where I begin to have side play.
-------- David Maib RV-10 #40559
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=89217#89217
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davelammers(at)mchsi.com
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| Posted: Sun Jan 21, 2007 7:08 am Post subject: Pitch Trim Bellcrank Assembly |
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David,
I just finished this step last night and had the same problem/question.
You do want free motion with no play and that means: The washers need to
be thinned A LOT!!!. If you have the right measuring tools you can
measure the gap and then sand away at the washers until the two of them
equal the size of the gap. From these measurements you will see that
you need to do a lot of sanding. This may sound silly but I taped
(double sided) them to my index and middle finger and went back and
forth on a file (pausing occasionally to let my fingers cool down). It
took about 400 strokes on the file to get them to my target dimensions.
Then I installed them, no side play and smooth running. No magic
bullet here. Just some work.
Dave Lammers
fuselage
dmaib(at)mac.com wrote:
| Quote: |
Worked on the trim bellcrank assembly last night and seemed to have some rotational binding of the F-1095B bellcrank when assembled. We took it apart and sanded the two thin spacer washers as instructed. We went through this drill a couple of times without much improvement. The bellcrank moves very freely on the bolt, but is still binding a bit on the spacer washers. I am wondering just how free the bellcrank should rotate. I would hate to get it to the point where I begin to have side play.
--------
David Maib
RV-10 #40559
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=89217#89217
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dmaib@me.com
Joined: 25 Apr 2006
Posts: 455
Location: New Smyrna Beach, Florida
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| Posted: Sun Jan 21, 2007 8:20 am Post subject: Pitch Trim Bellcrank Assembly |
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Thanks Dave and Tim O. We are heading to the hangar to file some
washers!
David Maib
#40559
do not archive
On Jan 21, 2007, at 9:08 AM, Dave Lammers wrote:
David,
I just finished this step last night and had the same problem/
question. You do want free motion with no play and that means: The
washers need to be thinned A LOT!!!. If you have the right measuring
tools you can measure the gap and then sand away at the washers until
the two of them equal the size of the gap. From these measurements
you will see that you need to do a lot of sanding. This may sound
silly but I taped (double sided) them to my index and middle finger
and went back and forth on a file (pausing occasionally to let my
fingers cool down). It took about 400 strokes on the file to get
them to my target dimensions. Then I installed them, no side play
and smooth running. No magic bullet here. Just some work.
Dave Lammers
fuselage
dmaib(at)mac.com wrote:
| Quote: |
Worked on the trim bellcrank assembly last night and seemed to have
some rotational binding of the F-1095B bellcrank when assembled. We
took it apart and sanded the two thin spacer washers as instructed.
We went through this drill a couple of times without much
improvement. The bellcrank moves very freely on the bolt, but is
still binding a bit on the spacer washers. I am wondering just how
free the bellcrank should rotate. I would hate to get it to the
point where I begin to have side play.
--------
David Maib
RV-10 #40559
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=89217#89217
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This message has NOT been classified as spam. If it is unsolicited
mail (spam), click on the following link to reclassify it: http://
127.0.0.1:6083/Panda?ID=pav_40584&SPAM=true
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_________________
David Maib
RV-10 #40559
New Smyrna Beach, FL |
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