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#4503135 - 01/08/20 08:13 PM P47 throttle quadrant.  
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Madkite Offline
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Hi helpful people.

I'm looking to start to 3d model a P47 throttle quadrant to go with the joystick project.

Have managed to collect loads of photos. Not sure which model I will go for yet. But the main body is the same for all but the N I think. Just handle changes.

So the problem is I am have nothing to scale the photos against. And i cant find any drawings or pictures giving any dimension. Or even better an exploded diagram showing the mechanics of how the tension handle works.

And dimensions or information anybody has would be super useful. Especially on the mechanics.

Thanks in advance.

Inline advert (2nd and 3rd post)

#4503142 - 01/08/20 09:22 PM Re: P47 throttle quadrant. [Re: Madkite]  
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Sokol1 Offline
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Last edited by Sokol1; 01/08/20 09:25 PM.
#4503153 - 01/08/20 11:57 PM Re: P47 throttle quadrant. [Re: Madkite]  
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453Raafspitty Offline
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Heres all I have.

Attached Files airplane-throttle-quadrant-parts_1_a27c6a2e3da7c95b0d527_002.jpgairplane-throttle-quadrant-parts_1_a27c6a2e3da7c95b0d527_003.jpgairplane-throttle-quadrant-parts_1_a27c6a2e3da7c95b0d527_004.jpgairplane-throttle-quadrant-parts_1_a27c6a2e3da7c95b0d527430e.jpg
#4503160 - 01/09/20 04:51 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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found a grate site for ww2 American and some spit stuff. $5 to get in and pay to download. but can print and you can select print to pdf.

https://aircorpslibrary.com/

#4503161 - 01/09/20 04:52 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Oh wow thanks. Had not loaded posts.

#4503384 - 01/11/20 11:08 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Work in progress.

Attached Files Mixture plate v7.jpg
#4503385 - 01/11/20 11:18 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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#4503386 - 01/11/20 11:20 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Original had all the writing painted. But that seems way to difficult.

Can be engraved and filled easier.

#4503526 - 01/12/20 10:51 PM Re: P47 throttle quadrant. [Re: Madkite]  
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453Raafspitty Offline
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Have you thought of photoetching?Great start to it though smile

#4504004 - 01/17/20 06:08 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Work is coming along when I get time.

Looking at CNC routers but quite an array to choose from.

Any of you have any recommendations? Something like a 3040 or 6040, though that may be getting a bit big for my shop. Would have to make the bench a little wider for 6040. But it does give the option of routing guitar bodies! band

Found this one. It has a smaller build aria but looks like it has a much stronger construction than most cheep ones, and its got supported slide rods and sd card printing. Cant find any real info in it though. Or any reviews of anyone who has one.
https://www.ebay.co.uk/itm/UK-3-Axi...3102763?_trksid=p2385738.m4383.l4275.c10

And yes, by the time I have all this equipment I could have probably bought a real P47 throttle. But I have a sickness for tools and cad and things.

If I make it to the end of this project would people be interested in replica late K14 gun sight handle P47 throttles? I have the plans for the switch and everything so am going to make the handle as original and functional making the witch and contacts and twisty handle everything.

Though i cant decide if the handle should be an axis or just a double switch with some kind of return.

Attached Files Mixture_plate_2020-Jan-17_05-55-41AM-000_CustomizedView8605369777.pngMixture_plate_2020-Jan-17_05-55-21AM-000_CustomizedView29612727706.png
Last edited by Madkite; 01/17/20 06:08 AM.
#4504011 - 01/17/20 08:44 AM Re: P47 throttle quadrant. [Re: Madkite]  
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453Raafspitty Offline
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I kept my P51 throttle all mechanical so people can add their own electronics to the ends of pushrods at the front of their pits for easy access.The K14 gunsight was adjusted via bowden cables (bike brake cables) in real life so no need to reinvent the wheel.
Most small desktop CNC engravers are good for small engraving jobs or jobs with small side loads..For most knobs I 3D print them and use a lathe for machining jobs.

#4504102 - 01/17/20 11:11 PM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Yes I have the plans for the cable joint. And i used to make cables like that in my previous job. It just if I want it to be a switch or axis. I think a 2 position switch will be better. Not sure how it actually interacted with K14 sight.

Was it like a smooth control or a switch like the cowl flap control?

Plus I think most games that model it have it as a switch type thing . Not a slider control.

#4504111 - 01/18/20 12:17 AM Re: P47 throttle quadrant. [Re: Madkite]  
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453Raafspitty Offline
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Rotary Pot on the K14 would work.Theres a guy on DCS Forums whos doing an Ez42 gyro Gunsight using an Arduino.
https://forums.eagle.ru/showthread.php?t=132743&page=12

#4504202 - 01/18/20 10:51 PM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Well its all going to be turned milled and cut out of metal as original as possible.

So the water injection switch you push in and slide. But this means its always on. Not sure hoe sims will handle that but will cross that bridge when I get there.

Originality is the thing I'm after. The controls are an after thought really. Will do what works best in IL2 when i look in to it.

Never actually play for all the time I spend doing this stuff.

#4504238 - 01/19/20 06:29 PM Re: P47 throttle quadrant. [Re: Madkite]  
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Sokol1 Offline
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Originally Posted by Madkite


So the water injection switch you push in and slide. But this means its always on. Not sure hoe sims will handle that but will cross that bridge when I get there.

Originality is the thing I'm after. The controls are an after thought really. Will do what works best in IL2 when i look in to it.


Games - specially IL-2 Bo'X' that use momentary press for all commands (exception Flaps and Landing Gear) - suposedly for be friendly for "casual new gamers", since this game series start as a "combat flight game", not "combat flight simulator" , but a switch always ON don't cause issue, don't send repeatedly commands.

But are another issue in this game, the game expect that you press a key/button or turn a switch for turn Water Injection ON and again for turn Water Injection OFF, awkward with a ON-OFF, switch resulting in unrealistic operation (Turn ON for start, turn ON again for stop).

So for deal with this limitation (again due the game simple commands approach for "new players) need use a keymapper software, e.g. Joystick Gremlin that will send a momentary command
when switch is turned OF and another momentary command when the switch is turned OFF, mimic real life switch.

An option use a optocoupler circuit between switch and controller for send only the momentary command, drawback is that optocoupler require external 5V source.

Other option is use an Arduino with Lynx CUBE firmware as USB controller for you throttle quadrant.
This firmware deal with this games issue, a ON-OFF switch will only send a momentary command in the change state for OF and OFF positions.
http://lynx.dk/cub-firmware/

Arduino PRO Micro +MMjoy2 firmware (by MegaMozg, VirPil electronics developer) is other option.

The popular USB Controller L.Bondar BU0836A will require the use of keymapper sofware, since don't deal with OFF state of toggle switches.


Last edited by Sokol1; 01/19/20 06:32 PM.
#4504286 - 01/20/20 05:15 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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That an interesting program.

Its a bridge I will cross when I get there. May be able to do it with relays and timer. lol.


Work is progressing on design. Going to be a while before I have saved for router though.

#4504289 - 01/20/20 07:12 AM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Looking good.

Attached Files Mixture_plate_2020-Jan-20_07-07-52AM-000_CustomizedView5370126423.pngMixture_plate_2020-Jan-20_07-08-51AM-000_CustomizedView8603540001.pngMixture_plate_2020-Jan-20_07-10-43AM-000_CustomizedView30420352068.png
#4504294 - 01/20/20 09:01 AM Re: P47 throttle quadrant. [Re: Madkite]  
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453Raafspitty Offline
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Very,very nice smile

#4504350 - 01/20/20 07:19 PM Re: P47 throttle quadrant. [Re: Madkite]  
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Sokol1 Offline
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Nice drawing skills, very good.

About the water injection switch, a simplification, avoiding use external software or additional circuit is forget how this work IRL
and adapt for how the games want the command, using a (MON)-OFF-(MOM) or (MON)-OFF switch
that work for games like momentary press a key or button.

Drawback, you loose the tactile and visual feedback of switch status (if is ON or OFF). C'est la vie!.

An circuit with optocoupler (H11AA2), the 100 uF capacitor give a 1/2 second pulse (button pressed). Scheme show wired in BU0836 6x6 matrix.

[Linked Image]

Last edited by Sokol1; 01/20/20 07:29 PM.
#4504358 - 01/20/20 09:52 PM Re: P47 throttle quadrant. [Re: Madkite]  
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Madkite Offline
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Been looking at the switch and there is another way I think that a lot more practical.

The switch is pushed down to make contact. Then is rocked over so its held down by the spherical cap.

So it has constant contact, the two bronze contacts have to be wide so it keep contact through the whole travel arc.

So I can either cut away part of the contacts so when its rocked over it loses contact. Or insulate half of them. Then when its rocked in and over and back and pops up it will make momentary contact during each actuation either way.

Will draw up as original and then draw the modified one.

No electronic needed then.

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