OEM 737 Throttle parking brake mechanism

[archen]

Hello all,
I'm working on a new product for the parking brake lever on the throttle Quadrant.

Features:
- Automatic release when pushing on brakepedals.

- Realistic method for setting the parking brake. You need to press the brakes to be able to pull the handle all the way.

- To set the parking brake you also need keep your hand on the lever until you release the brakes.

- When set, you can't push the handle down. You need to release the pressure on the brake pedals.

It will work by electronics (solenoid) OR a mechanical linkage to the pedals. The second version will be later on.

The main design is finished and I'm manufacturing the first prototype at the moment.



I need you input, what kind of connector do your OEM parking brake rod have?

Was your rod cut when you purchased the TQ?

Share your pictures, thanks [emoji4]

Anders

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[mickc]

OEM TQ has a small bellcrank at the bottom, this connects to the linkage with a rod end.  This linkage is usually cut or stays with the aircraft depending on how much of a rush the dismantler is in 

Below is a layout of the full linkage

[archen]

Hello Mick,
Seems like there are some methods out there when dismantling the TQ. Many are cut as I can see. Do you know how the rod connects to the bellcrank? Any dimensions of the connector?

The rod will connect to a arm in my construction, just thinking about to design the connection so it will fit those TQs that still have the connector.

I suppose it's something like attached picture?



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[mickc]

Hello Mick,
Seems like there are some methods out there when dismantling the TQ. Many are cut as I can see. Do you know how the rod connects to the bellcrank? Any dimensions of the connector?

The rod will connect to a arm in my construction, just thinking about to design the connection so it will fit those TQs that still have the connector.

I suppose it's something like attached picture?

Yes, but with a male thread.  It just has a 3/16" through bolt holding it on.  I can measure and take pics tomorrow

[archen]

Awesome! Thank you very much mick

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[kattz]

Hi, Anders,

Sign me up when you have them finished!

Regards,

Kev

[archen]

Hey Kev,
Thanks! I'll post video and updates in this thread once available.

I have a working prototype now, waiting for some hardware before sending it out to a friend that has a OEM TQ for integration.

Br.
Anders

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[kattz]

I have one too!  Ready to test!

Kev

[archen]

Awesome. I'll be in touch [emoji4]

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[archen]

Prototype is more or less finished. I'm waiting for threaded inserts, then I will be able to assemble the unit and send it for testing.

Design worked as planned. I plan to use some kind of friction material on the lever to introduce some inertia.



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[archen]

Prototype ready and sent for testing in Real 737 TQ.



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[Trevor Hale]

Prototype ready and sent for testing in Real 737 TQ.



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Brilliant engineering.  Well done.

Trev

[MistyBlue]

Nicely done!  I'd be up for one of these but not sure it'll fit in my RevSim TQ.  Will have to get some dimensions.

[archen]

Thanks Trev! 😊

Misty, that would be interesting to know if it would fit.

Br.
Anders

[kattz]

Outstanding work, Anders!  When you make them, put me down for one, please.

I just bought the N1/SPD and autobrake switches from you.  Excited for their arrival!

Cheers!

Kev

[archen]

Thanks a lot [emoji4] video coming today or during the weekend

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[archen]

I'm also working on making the unit even smaller by realigning the solenoid and optimizing parts.

I think I'll be able to cut 30mm on the height and maybe a little on the width.

Always tight on space in simulators [emoji23]

Br.
Anders

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[archen]

New version with smaller footprint

Dsub  moved to make more space for connector.

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[archen]

Drawing with dimensions of V2.

https://drive.google.com/file/d/17RGddr_UH0WW0XXphfLOjoLq-c5_mL-w/view?usp=sharing


*edit* new link

[kurt-olsson]

I just recieved mine!

Excellent quality!
This thing is really sturdy and is also very easy to mount due to predrilled holes/lines in the module.

I made a small video of this item that is used in my OEM throttle quadrant.

[kurt-olsson]

The demo

https://youtu.be/xsqBU63LlJs

[archen]

Support ticket created with prosim to implement support for the module.

I have also sent V2 to another simmer here in Sweden to be interfaced with prosim737.



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[KyleH]

Sweet. I imagine I could adapt it for my 767?

[archen]

Sweet. I imagine I could adapt it for my 767?

I'm not familiar with the 767 TQ but if it has a rod connecting the lever, it should work.

Can you measure the total travel between on and off position?

I have added 2 more holes on the leverarm so it will work with many different TQs.

Measure and let me know.

Br.
Anders

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[KyleH]

Hi Ander,

I do not have a real 767 TQ, it's a purpose built simulated one for an FTD, and has no parking brake handle...yet.

I opened up the pedestal had had a look, there is lots of room for me to fabricate a mount.
The 767 parking brake is a handle on a rod that pulls up directly vertically so I'm thinking it would work fine.
No idea the distance it pulls up. I'll have to look into that.