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Cwehner
Joined: 15 Jan 2009
Posts: 17
Location: Tulsa, OK
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 Posted: Mon Apr 20, 2009 12:11 am Post subject: New Control stick |
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After being inspired by a friends Schweitzer (helicopter) control stick I decided to design and fabricate new control sticks that would keep the grip in the same location as the stock grip but have absolutely no contact with the seat in aft positions. After finally talking a local tube bending machine shop into taking a crack at it (without a minimum order of a 100 sticks) here's what I came up with. Our new grips were a few inches taller than the generic stock grips so I was able to modify them to have the stick enter through the front instead of the bottom thus lowering the grip an inch without lowering the stick. Shot it with an etching primer and an auto urethane to match the plane powder-coat.
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| Description: |
| New stick and stock stick side by side |
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| Filesize: |
376.12 KB |
| Viewed: |
13223 Time(s) |
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| Description: |
| Stick with modified new grip |
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| Filesize: |
374.96 KB |
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13223 Time(s) |
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| Description: |
| Stick in Neutral position |
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| Filesize: |
410.53 KB |
| Viewed: |
13223 Time(s) |
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| Description: |
| Stick in full aft position |
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| Filesize: |
371.44 KB |
| Viewed: |
13223 Time(s) |
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_________________
Chris Wehner
Tulsa, Oklahoma
Kitfox IV, 912, Final push for completion! |
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Cwehner
Joined: 15 Jan 2009
Posts: 17
Location: Tulsa, OK
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| Posted: Mon Apr 20, 2009 7:05 am Post subject: Re: New Control stick |
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I also wanted to add that We'll be making the sticks removable (also inspired by my friends Schweitzer). I'm 6'4" and have a really hard time getting in and out with either stick. Instead of an AN3 bolt holding them in place, there will be a quick release ball lock pin. here- http://www.carrlane.com/Catalog/index.cfm/27625071F0B221118070C1C513E111D081B0006280B1713050245221E0107070F1A3C3B28535640
And the wires will be connectect with a military quick release Cannon plug. here- http://www.ittcannon.com/product.aspx?id=1102
This is how my friends certified Helicopter has them done and it seems to work extremely well. It's so easy to get out of the plane with the stick not in it.
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Chris Wehner
Tulsa, Oklahoma
Kitfox IV, 912, Final push for completion! |
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Paul A. Franz, P.E.
Joined: 02 Dec 2008
Posts: 280
Location: Bellevue WA
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| Posted: Mon Apr 20, 2009 8:49 am Post subject: New Control stick |
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On Mon, April 20, 2009 8:05 am, Cwehner wrote:
| Quote: |
I also wanted to add that We'll be making the sticks removable (also inspired by my
friends Schweitzer). I'm 6'4" and have a really hard time getting in and out with
either stick. Instead of an AN3 bolt holding them in place, there will be a quick
release ball lock pin. here- http://www.fixtureworks.net/Home/Tec...humbPath=5|0|0
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That link isn't a good one. I did a little fishing around and maybe you meant this one
(as a tinyurl):
<http://preview.tinyurl.com/cbuwpf>
There's other's nearby though.
If I understand you correctly, every time you get in and out of your plane you will be
unplugging this connector? I have an inclination to believe that this connector isn't
intended for such frequent usage. But maybe you won't often have to disconnect it.
Just pulling the lock pin and laying the stick to the side might be all you actually
do most of the time.
Thanks for the sources of these items.
--
Paul A. Franz
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
THE LAST WORD
"This year federal government spending will rise to 28.5 percent of
GDP, the highest level ever, with the exception of the peak of the
Second World War. The 44th president is proposing to add more to the
national debt than the first 43 presidents combined, doubling it in the
next six years, and tripling it within the decade. But to talk about it
in percentages of this and trillions of that misses the point. It's not
about bookkeeping, it's about government annexation of the economy, and
thus of life: government supervision, government regulation, government
control. No matter how small your small business is -- plumbing,
hairdressing, maple-sugaring -- the state will be burdening you with
more permits, more paperwork, more bureaucracy. And don't plan on
moving. Ahead of this week's G20 summit in London, Timothy Geithner,
America's beloved Toxic Asset, called for 'global regulation.' 'Our
hope,' said Toxic Tim, 'is that we can work with Europe on a global
framework, a global infrastructure which has appropriate global
oversight.' 'Global oversight': Hmm. There's a phrase to savor. 'We
can't,' he continued, 'allow institutions to cherry pick among
competing regulators and ship risk to where it faces the lowest
standards and weakest constraints.' Just as a matter of interest, why
not? If you don't want to be subject to the punitive 'oversight' of
economically illiterate, demagogic legislators-for-life like Barney
Frank, why shouldn't you be 'allowed' to move your business to some
jurisdiction with a lighter regulatory touch?"
-- columnist Mark Steyn
In general, the art of government consists of taking as much money as possible from
one party of the citizens to give to the other.
-- Voltaire (1764)
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_________________
Paul A. Franz, P.E.
Registration/Aircraft - N14UW/Merlin GT
Engine/Prop - Rotax 914/NSI CAP
Bellevue WA
425.241.1618 Cell
425.440.9505 Office |
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Av8r3400
Joined: 22 Sep 2008
Posts: 83
Location: North Central Wisconsin (KRRL)
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| Posted: Mon Apr 20, 2009 9:11 am Post subject: Re: New Control stick |
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| Paul A. Franz, P.E. wrote: |
If I understand you correctly, every time you get in and out of your plane you will be
unplugging this connector? I have an inclination to believe that this connector isn't
intended for such frequent usage. But maybe you won't often have to disconnect it.
Just pulling the lock pin and laying the stick to the side might be all you actually
do most of the time.
Thanks for the sources of these items.
--
P |
In Industry we call those Amphenol connectors.
http://www.newark.com/jsp/brand/brands.jsp?mfg=AMPH&CMP=KNC-G10000027&HBX_PK=amphenol&HBX_OU=50&s_kwcid=TC
They are for frequent use, especially the quick couplers like the one shown.
Awesome idea.
The ball-lock pin is a great idea too...
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Thanks,
Av8r3400
Kitfox Model IV-1200 W/912UL & IVO
Kitfox Model IV-1050 W/912UL & Warp
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WurlyBird
Joined: 16 May 2008
Posts: 207
Location: North Pole, Alaska
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Cwehner
Joined: 15 Jan 2009
Posts: 17
Location: Tulsa, OK
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| Posted: Mon Apr 20, 2009 10:16 pm Post subject: Re: New Control stick |
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| WurlyBird wrote: | | If you had ordered 100 copies, I sure would have taken a couple off your hands. I'm just sayin . . . :D |
It seemed all the places around here with the proper equipment to do such a task were used to bending bigger more industrial pipe. After telling me that they weren't sure how they would turn out because of diameter and the thin wall, I was afraid I would end up with 100 ugly paper weights.....or I might have ordered 100 :D
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Chris Wehner
Tulsa, Oklahoma
Kitfox IV, 912, Final push for completion! |
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Tom Jones
Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA
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| Posted: Tue Apr 21, 2009 6:49 am Post subject: Re: New Control stick |
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Chris, Just some ideas, maybe I'm all wet. Without the stick contacting the seat, strong arm force will be put on the elevator control tubes and rod ends at full aft elevator when the rod end at the aft end of the control tube contacts the vertical fin tail post. You will have some pretty significant leverage advantage on those parts with the stick Might want to caution anyone else that might fly the plane to stop pulling when the stop is felt. It is a very nice looking modification.
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Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA |
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Cwehner
Joined: 15 Jan 2009
Posts: 17
Location: Tulsa, OK
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| Posted: Tue Apr 21, 2009 7:15 am Post subject: Re: New Control stick |
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| Tom Jones wrote: | | Chris, Just some ideas, maybe I'm all wet. Without the stick contacting the seat, strong arm force will be put on the elevator control tubes and rod ends at full aft elevator when the rod end at the aft end of the control tube contacts the vertical fin tail post. You will have some pretty significant leverage advantage on those parts with the stick Might want to caution anyone else that might fly the plane to stop pulling when the stop is felt. It is a very nice looking modification. |
Hey Tom, You have a good point and I should have described that portion a little better. About 3" from the bottom of the stick at the point where it bends forward, it actually stops on the seat bar at the same time that the elevator stop is reached. what I meant by not touching the seat was that the stick is not buried in the cushion when aft. the stick still stops on the front seat bar.
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Chris Wehner
Tulsa, Oklahoma
Kitfox IV, 912, Final push for completion! |
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