Showing all posts tagged 737tq:

Removing Pinion Gear From Stepper Motor : .sha VS pinion

Back in September I tested using a 12V 28BYJ48 Stepper Motor to move the throttle levers on my 737 Throttle Quadrant. It worked, but I believed it was at the limits of the motor's torque capabilities. If you look back at the video, you'll notice the motor jumps a bit when crossing the 45 degree point probably due to the sudden shift in weight. My gut instinct told me that I should upgrade the motor now before proceeding with the rest of the design. The motor size is the biggest (literally) h...

DIY 737 Throttle Quadrant - Testing Motorized Throttle Levers

Testing a Motorized Throttle Lever for my Flight Simulator. When the auto-throttle is engaged, aircraft's systems are supposed to control the engine throttles automatically, which includes moving the actual levers. I've used a 12V 28BYJ48 Stepper Motor (modified for bipolar format for more torque) and a A4988 Bipolar Stepper Driver, together with a potentiometer to sense the Throttle position. Right now I'm still testing it standalone, with a Raspberry Pi generating pulses every 30 mil...

DIY 737 Throttle Quadrant - Time For Some Housekeeping ...

My 3D printer went bust last Friday ... it's fixable but I have to wait for parts to arrive. So the whole weekend has been spent suffering from 3D Printer Withdrawal Syndrome. Meanwhile, an idea came to me on how to better edit the 737 Throttle Quadrant body. Earlier, I had imported the original 3D model by thingiverse user jamang1999 (https://www.thingiverse.com/thing:725470) into TinkerCAD where I planned to slice and dice it into smaller pieces so that it could easily be printed on a 3D p...

737 Throttle Quadrant - Fuel Cut Off Levers

The micro limit switches I ordered arrived today (10pcs Micro Limit switches for USD1.29 with free tracked shipping at that!). This is for the fuel-cut of lever of my 737 Throttle Quadrant. The spring forces you to lift the lever upwards to move it, when it is in end position it engages the switch. Turns out they are a lot smaller than I expected them to be (for reference, the nut beside it in the photo is an M3). Which is good as space is quite tight. No chance to screw this in place, I wil...

737 Throttle Quadrant - Flap Lever Mechanism

Having sliced and diced and 3D-printed the 3D Model of the 737 Throttle Quadrant (originally designed by jamang1999 on Thingiverse), I started work on the mechanics, targetting the Flap Lever first. The Flap Lever on the 737 has a number of fixed positions, corresponding with flaps 0, 2, 5, 10, 15, 25, 30 and 40. The flap lever can sit in these specific positions, and needs to be lifted upwards when you want to change flap positions. To achieve this, a special gate controls where the flap le...

DIY 737 Throttle Quadrant - Printed the 3D Model

I finished printing the 3d model of the 737 Throttle Quadrant ((https://www.thingiverse.com/thing:725470). It took me a day short of two weeks, with the 3D printer printing almost all the time. the Prusa Mk2 is really a workhorse. The reason it's white and green is because i ran out of filament half way through -- It's going to be covered over and/or spray painted anyway so the base colour doesn't matter. I made a couple of changes to the base design, and my modified version can be found ...

Thingiverse: Boeing 737 Throttle Quadrant

https://www.thingiverse.com/thing:725470 This should be an interesting project. It's too big to fit into my 3D printer, so I have to chop it up and print it in parts and then glue it together. Also because I don't like printing with supports (you can't print material above a "hole" unless you add temporary supports) I have to print the "above" and "below" parts separately. All possible but will probably take some weeks. The internals should be more interesting. I've ordered some sliding...