New 80/20 rig design

Brun · Feb 17, 2019

Been using a GT Omega rig for the last few years which I've had to modify in order to cope with the stresses of OSW and load-cell pedals. Despite (or possibly because of) this it's still rather creaky so I've decided to build myself a new 80/20 rig.

Motion's out due to the fact that I'm limited for space and it needs to be relatively easily moved. I currently have all the parts for this in my basket at Motedis...

The pedal box is on sliders for the sake of adjustability and the fact that it needs as small a footprint as possible when I'm not using it. Because that's not rigidly connected I wanted to make sure the rest of it was solid. Am hoping it's suitably over-engineered and that I've not over looked something really stupid in the design.

Brun · Oct 31, 2019

Here's a couple of work-in-progress shots to be going on with. More details to follow...

Wmacky · Nov 1, 2019

Good Job. Looks great!

Brun · Nov 1, 2019

Thanks! More details, as promised...

Am really pleased so far. Usually when I attempt something like this I manage a massive oversight, or something doesn't work as expected. This time round it's been pretty much flawless.

Sliding pedal box seems perfect, which is a great relief. Main concern was that I'd misinterpreted the drawings for the sliders and didn't get the gap right. However, it's absolutely spot-on. Moves freely enough but should be solid when locked. Unfortunately it hasn't been locked yet because the locking sliders weren't supplied with the hardware to fit them in this situation. Needs screws with low profile heads so I've had to order some. Until then I'll be able to use some angle brackets to do the job.

Haven't quite figured out how I'm mounting the pedals yet. They need to be removable with minimal hassle for when swapping into aircraft mode. From the looks of the photos above I reckon they might need raising a bit as well, especially since I've tilted the seat back a bit more than it was on my previous rig.

DrRob · Nov 1, 2019

@Brun looks very tidy, sturdy and clever! Like it.

Veldhuizen · Nov 1, 2019

This looks really good and also wit a good WAF. Can you share the part list / drawing with us?

Daniel oliver · Nov 1, 2019

Nice job. What the length when its in put away mode?

Brun · Nov 1, 2019

Veldhuizen said:
This looks really good and also wit a good WAF. Can you share the part list / drawing with us?

Will definitely share the parts list and more info on how to put it together. As mentioned previously, just bear with me while I make sure it's all working as intended. Already noticed one thing I'd change.

@Daniel oliver It's exactly 1m when collapsed. You could probably shorten that if necessary, but the rigidity of the pedal box will depend on how much overlap there is between it and the rest of the rig.

Brun · Nov 4, 2019

Saturday was very long, but I got everything sorted...

Cable management is a bit of a pain cos I need to be able to easily remove this lot and replace it with flight stuff. Not sure of the best way to go about that.

Noahbet · Nov 4, 2019

wow this Looks awesome, Looking Forward to the part list and drawings

Brun · Nov 4, 2019

In case anyone's really keen and fancies a head start, here's the meat of it:

40x120 I-type Slot 8 - 1000mm - x2 - Main chassis sides
40x120 I-type Slot 8 - 410mm - x1 - Main chassis rear*
40x120 I-type Slot 8 - 570mm - x2 - Main chassis uprights
40x80 I-type Slot 8 - 410mm - x1 - Main chassis front*
40x80 I-type Slot 8 - 630mm - x2 - Pedal box sides*
40x80 I-type Slot 8 - 322mm - x2 - Pedal box ends
40x40 I-type Slot 8 - 490mm - x2 - Wheel mounts*
40x40 I-type Slot 8 - 480mm - x2 - Seat mounts*

Bracket 40 I-Type slot 8 - x26
Bracket 80 I-type slot 8 - x2
Bracket 40x80 I-type slot 8 - x10

L connector plate 116x116x5 - x 4

Slider I-Type slot 8 - x 4
Slider with clamp lever I-Type slot 8 - x 2

Some notes on the above:

That only accounts for the main frame and pedal box. Doesn't include the shifter mount as seen in the initial renders.

I used the 2x Bracket 80s on the rear of the pedal box, and 4x Bracket 40x80s on the front. Reason being is it would allow the upper pair of the front ones to be installed facing the other way up, allowing the pedals to be mounted slightly lower if necessary.

The renders included plates on the ends of the main chassis and pedal box (T connector plate 116x116x5 and Square connector plate 76x76x5 respectively). I ordered these but haven't bothered using them, they don't seem necessary.

*If wanting to adjust the width, add or subtract the same amount to these sections. I needed to make sure it was wide enough for my rudder pedals (MFG crosswind), so it could be narrower.

RCHeliguy · Nov 4, 2019

So far it looks very clean.

An area of concern for me with a rig for both driving and flight is that the seat position and seat to pedal geometry are very different for each. Ideally there seems to be a consensus that the seat back should be about 40 degrees and the pedal deck should put your heels at the same height as the seat of your pants for driving. However for flight the seat is more upright and the flight pedals are lower.

Your seat currently looks upright for flight, but the flight pedals would be a little high. For driving you may want more of an incline for the seat.

I think you could solve this by using your seat's side bolt mount and adjustable seat brackets on the sides. You could mount the bottom of the side mounts to your slider and then adjust the angle of your seat for flight and driving. The bracket would also raise your seat for a better flight geometry.

I'm getting ready to try using 8mm lever bolts with side mount seat brackets to adjust the shell seat I have ordered. My seat hasn't arrived yet, but I'm hoping that this will work well. I believe the holes below will work for driving and then I'll level it out completely for flight. Hopefully I'll have an idea how well this works later on this week.

There is a simple solution to raise and lower your pedal deck. You could add a couple pieces of 40x80 on top of the front of your frame and join them with a couple "40 Series 8 Hole Rectangle Flat Plate". Then you could move your pedal deck up 3" for driving and then back down for flight. I only added a single 40mm width for mine, but my pedal deck has sits on top of this and can not submerge like yours can. Obviously these plates are mounted inside on my rig and would be outside on your rig.

Hatsy_09 · Apr 3, 2020

How have you found the rigidity of the pedal box being on a slider? Personally I think this looks very nice. Also would you be able to provide updated product list including the side mount for shifter.

Thanks!

Brun · Apr 3, 2020

Pedal box is absolutely solid in terms of rigidty. Locks perfectly with the two clamps.

For the shifter mount I just used some spare bits I had lying around, which were...

30x60 B-type Slot 8 - 500mm (way longer than necessary. See first photo in my post above, you can see the end through the hole in the seat)
30x30 B-type Slot 8 - 250mm
Bracket 30 B-type Slot 8 - x6 (4 for the rig and 2 to attach the shifter)

The 30mm section works fine for the shifters, but is a little award because you need to use washers here and there (see photo) to accomodate for the difference between it and the rest of the rig. I'd suggest going for 40mm just to make life easier, even though it's overkill for the shifter. In that case you could just go with 40x40 for the horizontal piece, I'm sure it'll be fine.

Beef36 · Apr 3, 2020

RCHeliguy · Apr 3, 2020

Hatsy_09 said:
How have you found the rigidity of the pedal box being on a slider? Personally I think this looks very nice. Also would you be able to provide updated product list including the side mount for shifter.

Thanks!

It's very solid. I have a whole build thread that has links and descriptions of almost every part of my build.

Brun · Apr 4, 2020

Beef36 said:
There are many examples of compact motion rigs that are portable.

Some context may help. It really is pretty tight in here

For further context I'm in London, so very fortunate to have this space at all.

badash199 · Apr 4, 2020

Very nice rig man!

How would you rate the confort of that Sparco Sprint seat? Thinking of getting it for my future rig...

dud · Apr 4, 2020

Brun said:
For further context I'm in London, so very fortunate to have this space at all.

That must be the best "London flat rig" ever deployed.

Hatsy_09 · Apr 5, 2020

RCHeliguy said:
It's very solid. I have a whole build thread that has links and descriptions of almost every part of my build.

Awesome thanks will look into this!

RCHeliguy · Apr 5, 2020

Hatsy_09 said:
Awesome thanks will look into this!

There are a lot of permutations of my rig over the last year. It started out as a full Fanatec rig with a seat out of a wrecked car and then eventually all the controls were replaced, a shell style seat was added, the pedals were inverted along with piles of other changes as I tweaked my design. It started with a Sim-Lab P1 chassis and then evolved from there.

Mobile Driving/Flying Cockpit with Motion and Tactile ( Build )

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