My DIY 2DOF simulator project

Hi,
Before presenting my project , I will present myself.
I'm Steve, 33, from Chailly-lès-Ennery, near Metz in France.
I'm a computer scientist.

My project was initially to do a cockpit with triple screen on the base of this commercial one :


I created the structure. But browsing the french forum PCSHM , I saw some dynamic simulator projects, very interesting and exciting, and specially the simukit from @Wanegain .
Fortunately it was yet compatible with my project.
So I decided to integrate a 2DOF seatmover and i ordered a kit to @Wanegain .
After some tests , that's some pictures of the project's progress.

Soon a video and details if you're interested.
And sorry for my english
Bye

Those motor mounts and rear arm mounts look to be on the Thinner side. have you tested and seen any undesirable flex in the mounts ?

I really like the cockpit. This a very good and beautiful work.
But I think @Nick Motley is right. It seems very thin... Don't forget that there is a lot of weight at theses points!

Thank you @Wanegain
@Nick Moxley @Wanegain For the moment, I still testing different ways to fix the motors.

We can see the left motor shaking. This is however well built.
What I can suggest to increase the optimization is to lenghten the rods if possible.

Great setup!
Thanks for sharing the photos and video @stamer57

Thats a very nice rig! Very immersive!

Thank you @Leo Burton

Salut Wanegain,
Tu peux me préciser ce que veux dire "rods"? Sont-ce les cames?

Ce sont les bielles.

Une autre remarque pour avoir les mouvements bien symétriques : il faut qu'en position moyenne l'axe vertical qui passe par la rotule supérieure traverse la came en son milieu comme le montre cette image.

Another note for well-balanced movements : in mean position, the vertical axis passing through the upper ball cross the crank in the middle as shown in this picture:

Merci @Wanegain
Oui effectivement mes bielles sont courtes, surtout sur le moteur droit.
Pour la position de la rotule supérieur avec la came, oui c'est prévu. Pour l'instant mon entraxe sur la came ne fait que 30mm. J'avais prévu 49mm pour avoir 15° de mouvement. Les moteurs sont déjà fixés pour cette configuration.

Thank you Wanegain
Yes my rods are short, especially on the right engine .
For the position of the upper ball with the crank, so that's expected. For now the crank is only 30mm . I planned 49mm for 15 ° movement. The engines are already set for this configuration.

Motor's have Far more torque than most give credit for. I would beef up those mounts somehow.


PS try and get the screen to show as well, makes matching the motion to whats happening on screen Much easier.

Bonjour Stamer57,

J'ai réalisé une petite étude pour optimiser un 2DOF.
Si tu respectes ces règles tu gagneras en réactivité en éliminant un max de mouvements parasites et tu diminueras d'autant l'usure des moto-réducteurs.

http://pcshm-simulateurs-homemade.c...-pour-la-conception-d-un-simulateur-2-DOF.htm

I conducted a small study to optimize a 2DOF.
If you respect these rules you will gain responsiveness by eliminating a max of unwanted movements and thou shalt diminish even wear gear motors.

90 degree gussets where both mounts turn IMHO would eliminate a lot of the flex at motors and at the point where the rods attach.


clean build nice attention to detail

Merci @momoclic
Je connais déjà ton étude que j'ai lu sur PCSHM.
Je vais essayer de respecter au maximum ce que tu conseilles. La seule chose que je ne pourrais pas respecter c'est d'avoir les rotules supérieures des bielles sur le même plan que le joint de cardan.

Thank you @momoclic
I already know your study I read on PCSHM .
I'll try to follow up what you advise . The only thing I can not do is to have the upper ball joints connecting rods on the same plane as the universal joint .

Sorry @Nick Moxley
I don't understand this sentence. Can you try to say differently please.

I have new motor support. I'll try a different configuration this week end, maybe vertical.
I'll post new video.

Thanks to all for your advice

He's just saying that it would be nice to see your screen on the video when the sim is in movement (both your screen with the game and your seat).

Il voulait juste te dire que ca serait sympa de voir ton écran avec le jeu en même temps que ton simu sur la vidéo, histoire de pouvoir comparer les mouvements

Merci pour la traduction @Vef445
Oui j'essaierai de faire de meilleurs vidéos

Thanks for the translation @Vef445
Yes, I'll try to do better video next time.

As promised I have some work this weekend.
Especially on motors supports and cranks.





New video

It seems reactive ! I think surge is a little bit stronger, maybe you should lower the % in Axis Assignments. And I suggest you to add roll, pitch (an easy value to test is -30/30 in Tuning Center and 100% in Axis Assignments) and heave (very useful Force but probably the hardest to define).

For a better immersion with Seat mover, a harness will provide you better sensations (you can't absorb effects).