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DIY gimbal - BRD style

Posted By: AIRWOLFMUTLEY

DIY gimbal - BRD style - 02/14/18 10:22 PM

Yeah, I know this is far from BRD products. But I try...

Anyhow,

Thanks to:

Sokol: for it's incessant help to the community
Mega Mozg: for giving to the community the MMJoy software, wich allow all of us to create our own projects
Baur (BRD): for the creation of (in my humble opinion) the best gimbal for joysticks

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Sensors part:

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Mounted:

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Posted By: Czary

Re: DIY gimbal - BRD style - 09/22/18 05:46 PM

Hello, thanks for your post. I've also tried to replicate Baur gimbal design- but no luck. Does your gilbal centers without any issues ?
The problem with mine is that there is no clear center. I can feel centering spring only near the max position of the rudder.
Here is my rudder centering cam and off center issue:

http://simhq.com/forum/tmp/11474.png
http://simhq.com/forum/tmp/11475.png

and my cam dimensions :

http://simhq.com/forum/tmp/11476.png
http://simhq.com/forum/tmp/11477.png
http://simhq.com/forum/tmp/11478.png

I'd greatly appreciate any help, after 2 years of using it it would be nice to finish the device with clear and strong center position.
Best regards, Czarek.

Attached picture main.png
Attached picture off center.png
Attached picture cam width.png
Attached picture cam lenght.png
Attached picture pivot to cam.png
Posted By: AIRWOLFMUTLEY

Re: DIY gimbal - BRD style - 09/22/18 08:52 PM

Hi Czary!!

You make a good job!!

Don't worry, I think you will solve the centering problem.

Mine is working pretty well!!

I strongly believe that your trobble is that you use the cam system as a scissors (at least is what the result appearing to be in the picures), which, by my intuition, is not good.

Try to make they work as a valley. Look the pictures in this link:

baur cam pedal
Posted By: Sokol1

Re: DIY gimbal - BRD style - 09/23/18 05:58 PM

Czary,

Nice craftsmanship. thumbsup

In your design CAM arms are too inclined, what created an pronounce "V" in the center position, so the follower bearing chock with opposite CAM arm, creating the defined center - tactile and perhaps audible.

For have an clear center - what is desired only for helicopter flights, because as penalty you have no more an absolute center, the circumference created by the two CAM arms need be slight big than follower bearing circumference.

Baur CAM profiles have models with "hard" center - but not hard like in your design, "soft" center, and "clear"center.
Posted By: Czary

Re: DIY gimbal - BRD style - 09/23/18 08:06 PM

Greetings, thank you guys for you kind words. The rudder was cut on my friend's CNC machine some 2-3 years ago.
Now, following your advice I've designed new cam arms. This is the left side arm, green circles represents movement of the centering bearing- 15ยบ to each side.
Thursday I'll cut a prototype out of some aluminum sheet, and if that works ok, I'll order lasercut version out of 3mm steel.

http://simhq.com/forum/tmp/11498.jpg

Attached picture newcam.JPG
Posted By: Clyber

Re: DIY gimbal - BRD style - 12/22/19 12:19 AM

I like this project ... keep it up salute
Posted By: AIRWOLFMUTLEY

Re: DIY gimbal - BRD style - 12/22/19 10:23 PM

Hi Clyber,

You are welcome!!
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