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armywrights(at)adelphia.n
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jhasbrouck(at)woh.rr.com
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 Posted: Tue Jan 16, 2007 4:54 pm Post subject: Control Stick interference |
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Rob,
I just finished rigging the elevators so let me take a shot at answering. Ultimately the range of control movement is determined by the stops on the respective control surfaces. I did find a few gotchas in this section that need attention. First, on page 39-8, fig. 3 I found that the hardware installation should be reversed. If you reverse the AN3-13 throught the control stick and put the head of the bolt on the side of the WD-1010, interference is eliminated with the weldment in full side to side movement. Also reverse the AN3-10As at the bottum of the control stick bases. If you don't you will find an interference at full aft stick and full side to side movement. The bolts hit the control cloumn mount. I used the neutral position jigs for both the elevator bellcrank and the control stick. The jig for the bellcrank is in the empennage plans and the one for the control stick is on page 39-10. These turned out to be useless when it came to rigging the elevators. I had to play with the rod ends to get F-1065 to miss the tunnel cut outs at full up elevator. I also found an interference, at full down elevator, with the F-1090 push tube and the bottum of the elevator bellcrank. I relieved the bellcrank a little to insure adequate clearance. My side to side stick movement is now limited by the cabin sidewalls so I'm pretty sure that's enough.....Hope this helps.
John Hasbrouck
#40264
[quote][b]
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rv10builder(at)bellsouth.
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| Posted: Tue Jan 16, 2007 6:14 pm Post subject: Control Stick interference |
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THANK YOU for posting this. I have been pulling my hair out for the past
week with similar problems:
The F-1090 tube and the bottom of the bellcrank interference required
that I extend the rod end bearing to resolve this problem and then
adjusted the opposite end to fix the F-1063 elevator idler arm moving to
far forward (all while ensuring at least half of the rod end threads
engaged). What I cannot seem to overcome is that I have the measuring
jig connected to the WD-1010 during elevator neutral, however moving the
controls full aft to stop causes the F-1089 rod end bearing threads to
impact the rear of the WD-1010 attach point. This should be impossible
if the jig is setup correctly during elevator neutral (shouldn't it?).
I can adjust it out so that all controls move free and clear to all
stops....but is this wrong?
Brian
#40308
http://www.mykitlog.com/rv10builder
I
John Hasbrouck wrote:
| Quote: | Rob,
I just finished rigging the elevators so let me take a shot at
answering. Ultimately the range of control movement is determined by
the stops on the respective control surfaces. I did find a few
gotchas in this section that need attention. First, on page 39-8,
fig. 3 I found that the hardware installation should be reversed. If
you reverse the AN3-13 throught the control stick and put the head of
the bolt on the side of the WD-1010, interference is eliminated with
the weldment in full side to side movement. Also reverse the AN3-10As
at the bottum of the control stick bases. If you don't you will find
an interference at full aft stick and full side to side movement. The
bolts hit the control cloumn mount. I used the neutral position jigs
for both the elevator bellcrank and the control stick. The jig for
the bellcrank is in the empennage plans and the one for the control
stick is on page 39-10. These turned out to be useless when it came
to rigging the elevators. I had to play with the rod ends to get
F-1065 to miss the tunnel cut outs at full up elevator. I also found
an interference, at full down elevator, with the F-1090 push tube and
the bottum of the elevator bellcrank. I relieved the bellcrank a
little to insure adequate clearance. My side to side stick movement
is now limited by the cabin sidewalls so I'm pretty sure that's
enough.....Hope this helps.
John Hasbrouck
#40264
*
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jhasbrouck(at)woh.rr.com
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| Posted: Tue Jan 16, 2007 7:37 pm Post subject: Control Stick interference |
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Brian,
As I discovered, the jigs were useless. I had the same interferences
with the F-1089 and the WD-1010 and finally adjusted them out so the
elevator traveled to both its stops without interference in the rest of the
control system. I tried extending the rod end on the F-1090 to clear the
bottom of the bellcrank but found I was chasing my own tail ( pardon the
pun ). My solution was to reshape the bottom of the bellcrank slightly thus
keeping the rod ends engaged properly. The goal is to get the control
surfaces to travel, unimpeded, to their full extent while keeping the rod
ends engaged as much as possible.
J. Hasbrouck
#40264
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jesse(at)saintaviation.co
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| Posted: Tue Jan 16, 2007 8:08 pm Post subject: Control Stick interference |
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I don't think saying the jigs are useless is fair. They do not necessarily
make a perfect fit every time, even if all of the pushrods are the exact
length the plans call for. I don't know where the difference is, but
probably a lot of it is in the elevator horns and maybe in the welded part
in the front. The jigs give you a place to start. Without them you would
be guessing from the start, not getting close, then tweaking to get
clearance. I don't know if parts have changed much/any, but I know that
most of the time the jigs have fit pretty well for us and have had clearance
needed so the control surface hits its stop first (40241 is not necessarily
that way). I am going to help rig a set of controls tomorrow and Thursday,
so I will give more of an opinion after that is finished.
Do not archive.
Jesse Saint
Saint Aviation, Inc.
jesse(at)saintaviation.com
www.saintaviation.com
Cell: 352-427-0285
Fax: 815-377-3694
--
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jhasbrouck(at)woh.rr.com
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| Posted: Wed Jan 17, 2007 8:35 am Post subject: Control Stick interference |
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Jesse,
I'll concede that useless may be too strong a word for the jigs but I
think the dimensions given in the plans for the push tube lengths are a
better place to start with the rigging. Your comment about the weldments
and the control horns being the source of the variations is probably
correct. Thanks!
John Hasbrouck
#40264
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johngoodman
Joined: 18 Sep 2006
Posts: 530
Location: GA
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| Posted: Sun Jun 22, 2008 5:35 pm Post subject: Re: Control Stick interference |
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This is a very old thread, but it is exactly where I am right now. I did the duty search and found that the range of motion due to the bolts is a minor issue for me, as well.
With more people passing through this stage, any comments? I think the bolt interference is a non issue because of the stops on the flight surfaces, right? Or, have other people reversed the bolts?
John
[quote="armywrights(at)adelphia.n"]All,
I’ve removed the front covers that fit around the control sticks. The plans say to move the controls throughout their full range of motion to check for interference. What is the actual full range of motion? Of course I can make the ends of the bolts on the control stick bases touch the F1033L control column mounts (P 39-7 and 39- as well as make the control pushrod (F1065) touch the curved slot in the sides of the tunnel.
I believe that once I attach the control surfaces this extra movement will go away, yet the plans say to check for interference without the surfaces installed (p39-8 Step 3). What other experiences are out there? Did anyone have to hack up the pre-formed slots or other areas once the control surfaces were installed?
Rob Wright
#392 QB Fuse
Control Sticks temp installed – looks like an airplane!!
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#40572 Phase One complete in 2011 |
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