F-18C Hornet Mini 3D Printed Throttle Unit - Help wanted!

[obious]

Hi All,

 

Long story short, I'm designing and 3D printing my own mini F-18C Hornet throttle unit (with a few associated buttons, knobs etc) and need a little help in working out the gearing ratio for the pots that'll transfer the liner input of each throttle axis into a digital signal (plugging into a Leo Bodnar board). 

 

The below pictures detail my progress so far but as mentioned above, does anyone have the technical knowhow to help me create the correct gearing ratio (red highlighted area in mech.png)? I'm trying to transfer the full range of motion from each throttle unit (70 degrees) to utilize the full 265 degrees of motion of the pots I'm using (link to data sheet is here).

 

Any help would be greatly appreciated and as a 'thank you', I'll publish the STLs here once I'm finished so that those with a large printer at home can print their own rather than spend the £600+ on something like Winwing's unit. Also as you can probably tell, I'm trying to keep the size and weight down and am designing the unit to mount to a spare Mounstertech table mount I had laying around in case anyone is wondering how it'll mount to a desk.

 

Thanks!

 

 

Edited December 30, 2020 by obious
Adding additional image

[Sokol1_br]

Nice look project.

 

Why not use Bi-Tech 6120 series HALL sensor "potentiometer"  instead P-260 potentiometer?

 

https://www.digikey.com/en/products/detail/tt-electronics-bi/6127V1A60L-5/2620660

 

Bi-Technologies and TT Electronics are the same group.

 

This 6120 series have models with 35, 60, 90º (and more) of "effective electric angle" what make more easy match throttle levers movement.

 

[obious]

10 hours ago, Sokol1_br said:

Nice look project.

 

Why not use Bi-Tech 6120 series HALL sensor "potentiometer"  instead P-260 potentiometer?

 

https://www.digikey.com/en/products/detail/tt-electronics-bi/6127V1A60L-5/2620660

 

Bi-Technologies and TT Electronics are the same group.

 

This 6120 series have models with 35, 60, 90º (and more) of "effective electric angle" what make more easy match throttle levers movement.

 

 

Interesting, I didn't even know these were a thing! I'll check them out, thanks!

[rustclar]

Could You send me a link to your current stl files to play with?

 

[drcsany]

Hi Obious,

I've been searching for F18 throttle stl files and yours is the best model I found so far on the whole internet!  I really like the whole panel!

Is it possible to ask for the stl files?

BTW, did using the HALL sensor solve it for you?

[Hempstead]

On 12/31/2020 at 3:35 AM, obious said:

 

Interesting, I didn't even know these were a thing! I'll check them out, thanks!

I suggest you go search in Digikey, like https://www.digikey.com/en/products/filter/angle-linear-position-measuring/549?s=N4IgjCBcoKwCwyqAxlAZgQwDYGcCmANCAPZQDaIcADGABy1whEDMcA7AJxwdMjMwA2KswgsOzKm0ZjaVAEzNe1Zm34gAukQAOAFyggAyjoBOASwB2AcxABfG0TnkQACWxYABHjRo8yHe-xzHGJjDSJEaBAtKDBtaMg5GHsQASQQUwATfQBaMBpeXX1eHQBPLTx9DBxUOyA

[PARADiME]

On 12/30/2020 at 3:34 PM, obious said:

Any help would be greatly appreciated and as a 'thank you', I'll publish the STLs here once I'm finished so that those with a large printer at home can print their own rather than spend the £600+ on something like Winwing's unit.

Hey obious,

Your design looks amazing. I'm kinda just looking for an "enclosure" that I could then add a Winwing Throttle and Tek Creations panels to, to make a left console like the Dogfight Dynamics one that I could bolt to whatever.

Would you be willing to provide the stls?

[Sierra99]

So without putting to fine a point on it...You don't have to know the ratios if you are using a Bodnar Board.

Fit it for the Potentiometer of your choice and once it's wire and operational you can adjust the curves in DCS until it works to your satisfaction.