And so it begins... but what?

First I would like to say thanks to a few nice dudes here that has been nice enough to answer a lot of my dumb question via some thread and PM. @bruce stephen, noorbeast, SilentChill,
BlazinH

Now I have finally get the idea how this work and got the motor running using Ardruino and MM driver. But I am sure got a lot more dumb question coming soon. I decided to buy a bunch of these DC brushed motor and try them out first, I haven't give up on my DC RC Brushless motor yet. Just want to get a brushed set up to run first to understand how thing work. In case anyone want to know what I'm saying " http://www.xsimulator.net/community...he-motor-have-to-change-direction.7163/page-2"

So, here's what I gather so far. ( I am planning to build a couple of platform, so I bought spares)

Assetto Corsa
Logitech G27 Racing set up
6x + Bodine DC brushed motors
10x MM driver (mind as well right? giving the reputation of defective) (this is why I want to try brushless rc motor, them speed controller is 95% more realiable).
2x HP power supply on the way.

Here's what I have laying around...
25mm heavy duty rail
25mm precision ball screw.

This isn't a build thread yet, I am still trying to throw around idea of what I should build? Any suggestion? Ball screw for surge? but these motor are slow, 45rpm (probably won't be fast enough with this ball screw. Are there any benifit using ball screw for surge or no?

I kind of know what I want to build... 2dof + surge? But then I thought since I already have bought a lot of motors, enough for a 6DOF, why not go straight there? But a 6d0f does have not have surge right?

IMHO I determine you do not know what "6DOF" does it mean and how it is working. The big advantage of a 6DOF is the moving of the platform in all directions. Already the 6DOF says it is a "Six degrees of freedom" platform: "the body is free to move forward/backward (surge), up/down (heave), left/right (sway )(translation in three perpendicular axes) combined with rotation about three perpendicular axes, often termed pitch, yaw, and roll".

Just go for the 6DOF and fix things on the way . That's what I did and it's turned out ok.

Thanks for the reply guys. The build for the 6DOF to me seem easier than a 2DOF and surge. But I am worry about configuring it, software wise. I guess I need to do more research and decide later, for now I start making some CNC arm for them motors.

Would it be a good choice if I go with 4 motor in a square config and the whole thing sit on a slider for surge? That would consider as 5DOF?

ahem, you are wrong. It is your decision, but do not complain once upon a time that we did not warn you

To me it seem 6DOF is just 6 motor holding up a flat platform? hardware wise look easier to build. 2DOF and slider for surge seem to involve more mechanic and hardware. ? You're right, I'm probably wrong. But I'm pretty good fixing my mistake and that seem to be the case with everything I build from DIY CNC machine to RC Heli.

If you would like to go the 6DOF route you should go. It is not impossible but not as easy as you think, that's it. If u are patient and you are willing to learn from the others you will have success.

Hi again helisfreak. May I ask why you are so intent on having a surge table? You do know that a 2dof seat mover does surge already don’t you? If fact, imo nothing works better than a seat moving to simulate surge. Again, just my opinion, but I believe a surge table, to really be effective, needs to have a lot of movement (with good speed). I’m talking about a dedicated building for your simulator to operate in a lot of movement (or at least a very large room). And a platform that rotates on its pitch axis to simulate surge is not as good as a 2dof seat either because the rotation at your feet does not feel natural and it also takes too long to move from one extreme to the other. A 2dof, with the right components, moves extremely fast and keeps up with you as fast as you can accelerate and brake and does the best job in making your brain think its real, again imo.

And while a 2dof is simpler to build than a 6dof, a 2dof with a surge table too makes it much more complicated and may be just as difficult as a 6dof in ways. But to be quite honest, imo the biggest issue with 6dof and simtools atm is there is not a way to do the math calculations required to make a 6dof work its best. It works yes, but the motion is just so-so from what it could be with proper math applied to your specific design.

Ps. If anyone didn’t see my disclaimers already, this is just imo

+1 Seat mover FTW!!!!!

You Aint getting this kinda speed and accuracy with a 6dof.

I beg to differ

Don't want to discourage you but a 2 dof will give the best bang for the buck. I am building a surge table just because i can, i don't think it will be that much of an improvement over my old 2dof but i had the pieces so why not. You will get a lot of challenges by building a 2dof to start, then you could aim for a 6 dof. I don't know if you have been simracing for a long time but i had one of my friend who asked to build him a 2dof and ended up not using long... I am just happy he did not spend the money for a 6dof!

But again it's just my opinion. I would love to see another 6 dof on this forum. Search around the web you will find a lot of nice diy 6dof.

No reason, I figured since I have a lot of ball screw and linear rail mind as well add surge. I have only been on the racing game at the game store, don't recall those have much of any motion. I know that 2DOF does have forward and backward.

Well, since I am still busy renovating my house, I think going with a simple 2DOF at the moment would be best choice. Later I might add surge or traction loss to increase the fun. Then do a 6DOF later and do some helicopter sim, I can throw the RC heli around pretty good, but would be fun to be in one.

One question, what's the advantage or disadvantage between mounting the lever at the shoulder or bottom of the platform for a 2DOF?

Also, if I use a 10K 1 turn pot, I can mount the pot shaft directly to the motor output shaft right?

full rig 2 dof maybe with traction loss like @SilentChill. imho chasing the pedals and wheel in a seat mover feels unrealistic, but others love them. again its all about what your going to use it for, so its just preference really.

100mph down the highway, HAMMER ON the brakes. Does the dash go forward, NO. Do the pedals go forwards, NO.....You do.

You don't either if you have a harness on

Im confused... are u guys talking about moving pedals vs fix pedals? I think i would want the wheels and pedals to move with the seat but fixed monitor. Isnt that closet to reality?