Adding 2DOF motion to my 80/20 GS-4 Rig

Thanks.

I'm more than happy with the result and i'm very much looking forward to put this rim on my AccuForce when it arrives.
I just got shipping notificatons of the DSD32 micro button controler. It's only 50x35mm big and can fit right in the middle of the rim between the 6 bolts.

Cool! Did you try different button layouts for the Blue / White?

If it were me, I would make it match the badge a bit more by having all blue top left, then all white top right then all blue bottom right and all white bottom left??

Artists Impression:

That looks pretty cool too and very impressive photo shop skills

Well it looks like @eaorobbie was right after all. The SCN6 didn't last long

Before i ordered the SX4000 kit at SimX i mailed about my design. I asked if it was even possible and submitted a drawing with all the measurements and angles The answer was : Yes it can be done.

A little over a month ago i noticed minimal lateral play on both acculators 0.2mm. That didn't get worried, but a few weeks later i suddenly noticed some axial play on the right acculator. This is probably a sign that the pin connecting the rod with the motor isn't gonna last much longer. Due to save concerns in such a tight space i stopped using the motion simulator immediately. I contacted SimXperience support and they offered me a refund, since changing the design is not possible.

So i send everything back and SimXperience has refunded the entire purchase (shipping included). So kudo's to them

I was gutted. I even seriously considered quiting simracing entirely. Over 100 hours of planning, building and modifying the office for nothing. A lot of money spend on extra 80/20, special brackets, import taxes ect ect. and still motionless. Didn't touch the rig for over 3 weeks and now the urge to race is comming back to me. I got the AccuForce this week and it's awesome.

Racing motionless actually shows how good the GS-4 is. The simulated G-forces in the corners are still really awesome and the GS-4 does a better job simulating them than the motion system.

I still miss the motion for all those other effects though.

The GS-4 is still mounted on the pivot and held in place by two rods.





I'm not up for the whole trial and error experience of the DIY motion yet, but i'm already starting to explore the options.

I could really use some help with chosing the right motor this time. Something that can handle the smaller angle AND the weight of the GS-4

@HoiHman , dont toss in the towel yet, got buy a pair of JRKS and 12v 200 watt motors with 60:1 boxes on them. put some 50-60mm CTC levers and you will be moving like SCN for a fraction of the cost.

Agreed, Dont give up. As we've said from the beginning, DC motor's are where its at. Price and Performance wise.

Thanks guys

I haven't given up on motion yet, but i do need some time to recover

This was a very big set back. The shipping cost of sending back were pretty steap and i'm still trying to get the taxes i paid back ( 450 euro ) but i'm very happy with the refund. What hurts the most is that i spend more time building the motion rig then i raced in it

I always enjoyed working on the rig and this is comming back slowly.

The arrival of this beast has a great part in that



I didn't like the stock rim and replaced with a Momo Mod 30. The BMW formula also works like a charm and is really awesome to drive



Tonigh i took the AF buttonbox appart and replaced the 4 lower red buttons with yellow ones. It now even looks better.



@noorbeast I don't know the exact weight of the GS-4 but a rough guess:

GS4 : 25 kg
5 Bk: 6kg
reinforments and 80/20 : 5 kg

So total for the GS-4 : 36kg
I weigh around 87kg

Total weight somewhere around 115kg estimated.

With a full metal rig and DIY, i'm not taking the risk of frying myself with AC motors, so i definately want DC motors. I'm just being a little extra carefull this time and I want to be well informend before making new purchases.

All advice is very much appriciated guys.

50:1 or 60:1 with a decent lever on it, JRK's or Ard, decent pair of PSU's, some pots, Heatsinks, Fans and your rockin buddy.

Hey. I am sorry to hear about your problems with your motion simulator.

It was a real shame because I was really impressed with your build and how you managed to build such a compact motion simulator.

It is really good that SimXperience gave you a full refund including shipping.

Great to see you finally got your Accuforce, it is a great wheel. I love your aftermarket wheels. I will be swapping my stock rim over for a Mod.30 at some stage and I am also building a custom formula wheel.

As the others said, DC motor is the way to go. I would say go for some 50:1 or 60:1 motors but be careful of the problems that myself and others have had with high speed motors (4,500RPM and above) when using the JRK's. You can minimise the motor errors by adding a brake duration and lowering the duty cycles but it is a workaround at best. I am still looking in to more powerful controllers that can handle a full reverse at 4,500RPM+

The GS-4 is a lot of weight to be moving around and I guess the moral of the story is not to underestimate how much it takes to move them around.

Thx Guys

I have a coupe questions, i just might startover sooner than i tought at first

1> So gearbox needs to 60:1 just to safe (higher is better correct ?)

Still undecided on the JRK's vs Arduino. JRK's are easier but my kid is a real arduino wizzard and he would love help set up an Arduino powered motion simulator.

Setting it set and spending some quality time with my son building the motion simulator should be great too

Could some of you guys give me a more specific advice about the motors needed for moving somewhere around 115Kg with a small angle at the back?

2> 12v or 24v. Is there any advantage running 24v
3> What is the recommend RPM / Torque / Wattage

4> On the page @noorbeast posted i see 256RPM and 3200 RPM motors and Richard is talking about 4500RPM??

Motion dynamics is too far away for me. Shipping of 2 motors will cost me 300 dollars. I looking for preferably a european vendor.

The 4,500RPM+ is the motor speed, before the gearbox.

My motors are 5,800RPM at the motor then stepped down to an output shaft speed of 116RPM through a 50:1 gearbox.

A 25:1 motor normally runs at about 3600RPM before the gearbox then drops down to around 160RPM at the shaft.

The higher the ratio the slower the output shaft speed, so if you put a 60:1 on my motor then the output shaft would drop just below 100RPM but it will have more torque.

Because of the slower output shaft then you also need a longer lever arm to get enough speed at the end of the arms.

In my testing I have found that the JRK doesn't like doing a full reverse on motors over around 4,500RPM so they are not ideal for faster spinning 50:1 motors.

I am not experienced with any other controllers but I might look in to them soon because the JRK is too small for 50:1 motors.

Yes, that is what I said

So yes, you wouldn't have a problem with slower spinning motors attached to 50:1 gearboxes. I was specifically talking about the faster spinning (over 4,500RPM) motors that are typically attached to 50:1 gearboxes.

Because of the gear reduction most motors with a 50:1 gearbox are usually over 4,500RPM

If you put a 50:1 gearbox on a 3600RPM motor like in the Motion Dynamics motor then the output shaft speed would be down around 70RPM which is probably be too slow for motion.

Thanks for the detailed reply and the PM

So the motors of motion dynamics are too slow. With over 300 dollars shipping cost, it isn't real option anyway.
I have been searching all evening yesterday and this morning, but i can't seem to find any motor that meets the requirements.

I've tried ebay, alibaba, google ect ect.

Does anybody have a good tip where to look for these?

The lack of available strong DC gear motors in the EU is the reason I bought winches. I would not do so if I would have any choice but ebay is not your friend for once. Some months ago motion_control_products has offered some nice 60:1 motors but they are sold out.
I asked the dealer if he would bring in supplies but no response so far. Perhaps we should raise a request to aliexpress...

What i mean is according to @Avenga76 they too slow if you use a 60:1 gearbox and end up with an RPM of 54 at the end of the gearbox shaft. If you use 25:1 you get a RPM of 128.

I'm a total newbie at this, so please correct me if i'm wrong

You're rig looks awesome, but making my own gear with chains is not the direction i want go.


Never thought that finding a motor for DIY motion would be so difficult Offcourse i'm also handicaped by the large weight of the GS4 and the small angle.

I have found a company in the UK called paralux with a broady range of DC motors. I'm just not sure which motor i would need. Could you guys please check the PDF i have enclosed and give me an advise.

If i know which motor should get, perhaps i can enquire if they can deliver 2 of them, since they are not all available in their shop online.

@HoiHman the chains are driving the potentiometer and not the seat itself only to clarify

the PM90-180 is very interesting. IMO the motors will be very expensive due to the professional background of using them?