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Grok as a helper - planning 6dof

Discussion in 'DIY Motion Simulator Projects' started by runar totland, Feb 26, 2025.

  1. runar totland

    runar totland Member

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    I tried talking with Grol about my 6dof build.. and asked of his suggestions fine tuning to what I like. - Space games, and on his idea on how to go even bigger and bolder.

    I have landed on this for my «Space Eagle 1», and Grok suggested how to make it more awesome in an «Space Eagle 2».

    Will have to verify specs on both, but to a totally newbie like me this does sound legit. Thought it might be interesting to share with you guys.

    Grok 3;

    «Here are the corrected and locked specs for "Space Eagle #1," your first 6DoF simulator build, tailored for space games and adjusted to 3G for neck safety using your actual hardware (AASD-30A drives and 110ST-M06030 motors). This reflects our latest discussions, ensuring it aligns with your setup and goals. Let’s lay it all out clearly—your compact, punchy rig!

    ---

    ### Space Eagle #1: Locked Specs (Corrected & Final)

    #### Frame
    - **Base**: Hexagon, 1000mm sides (~1150mm across), 4080W aluminum extrusion (40mm wide sides down), 5mm steel corner brackets top and bottom.
    - **Platform**: Hexagon, 500mm sides (~575mm across), 4080W extrusion, estimated ~30kg.
    - **Payload**: 110kg (pilot + minimal gear).
    - **Total Mass**: 140kg.
    - **Height**:
    - Retracted: Platform top at ~400mm above floor (200mm risers + base/platform thickness).
    - Extended: Max ~1700mm above floor (800mm heave + 400mm base height).

    #### Actuators
    - **Design**:
    - Length: 880mm (retracted).
    - Stroke: 650mm, geometry tweaked for 800mm heave.
    - Push Rods: 700mm, 14mm 4249 steel, heim joints, dual linear guide rails.
    - Mounting: Underside of base, mid-side on 1000mm segments, 200mm risers off floor.
    - **Drive**:
    - Motors: 110ST-M06030, 6Nm continuous, 11-12Nm peak, 3000 RPM (~1.8kW continuous, ~2-2.2kW peak).
    - Drives: AASD-30A (~2.4kW capacity).
    - Direct Drive: SFU2010 ball screw (10mm lead)—no gears.

    #### Performance
    - **Speed**: 500mm/s (3000 RPM × 10mm / 60).
    - **G-Force**: 3G (29.4m/s²):
    - Total Force: 140kg × 29.4 = 4116N, ~686N per actuator.
    - Continuous: 6Nm = 3768N (theoretical), ~2638N at 70% efficiency—6 × 2638N = 15,828N (11.3G theoretical, >3G capable).
    - Peak: 11-12Nm = 6912-7544N (~4838-5281N at 70%)—6 × 4838-5281N = 29,028-31,686N (20.7-22.6G theoretical, capped at 3G).
    - Burst: 0.034s to 500mm/s (8.5mm up/down cycle).
    - **Degrees of Freedom (DoF)**:
    - Heave: 800mm.
    - Pitch/Roll: 35°+ (650mm stroke / 500mm platform width).
    - Yaw: ~30-35° (1000mm base vs. 500mm platform).
    - Surge/Sway: ±400mm.

    #### Control
    - **Thanos AMC-AASD15A**: 6-axis controller:
    - Stroke: Set to 650mm.
    - Lead: 10mm (SFU2010).
    - Torque: Limited to ~1.6-1.7Nm per actuator (~686N at-efficiency) for 3G cap.
    - **SimTools**: Maps telemetry to 3G max acceleration (29.4m/s²), custom profiles for space games.

    #### Safety
    - **Restraints**: 5-point harness (secures pilot at 3G lateral/vertical), basic seat (no neck support needed).
    - **Limits**:
    - Hard: Mechanical stops at 650mm stroke (~1700mm max height).
    - Soft: Thanos capped at 3G (bursts only, ~2G sustained >1s).
    - **Kill Switch**: Hand/foot—power cutoff backup.
    - **Structure**: 4080W frame, M8 grade 8.8 bolts—handles 4116N easily.

    #### Power
    - **Motors**: 6 × 1.8kW continuous (~10.8kW total), ~13.2kW peak.
    - **Supply**: Standard 220-240V single-phase (AASD-30A compatible), 20-30A breaker recommended.

    ---

    ### Key Notes
    - **Hardware**: Your 110ST-M06030 motors (6Nm/11-12Nm) and AASD-30A drives were originally locked for 4G using peak bursts (11-12Nm, ~20-22% capacity). Adjusted to 3G via software—torque capped at ~1.6-1.7Nm (~13-14% peak), well within continuous 6Nm (~26%)—no hardware swaps needed.
    - **Feel**:
    - Space Games: 3G bursts (0.034s, 8.5mm) feel like firm thruster kicks—less brutal than 4G’s 0.026s snap. 800mm heave floats you gently, 35°+ tilts and ±400mm surge/sway dodge asteroids crisply—neck-safe and immersive (e.g., *Star Citizen* jumps).
    - **Build**: Compact—1150mm footprint, 1700mm max height—fits a standard room (e.g., 2.4m ceiling) with ~700mm clearance.

    ---

    "Space Eagle #1" is locked with your AASD-30A and 110ST-M06030 setup—3G keeps it fun and safe without neck strain. Match your build? Need tweak details or game tuning tips?

    ———————-

    Next up - not building this.. for now.. let me present the «Space Eagle #2».


    Grok 3;

    «Space Eagle #2» is officially locked in!

    This beast takes full advantage of your 500mm pit and 2.5m x 2.5m floor, stepping up from #1 with bigger motions and that 5G punch. Here’s the final blueprint for future reference—ready to soar!

    ---

    ### Space Eagle #2 Specs
    #### Frame
    - **Base**: Hexagon, 1800mm sides (~2000mm across), 4080W extrusion (40mm wide down), recessed 500mm into pit.
    - **Platform**: Hexagon, 900mm sides (~1000mm across), 4080W, ~40kg.
    - **Brackets**: 5mm steel corners, top and bottom, both base and platform.
    - **Payload**: 130kg (total moving mass: 170kg).
    - **Height**: Platform starts at ~0mm (room floor) retracted, max 1250mm above floor.

    #### Actuators
    - **Design**:
    - Length: 1000mm (retracted).
    - Stroke: 1000mm, tweaked for 1250mm heave via geometry.
    - Push Rods: 850mm, 14mm 4249 steel, heim joints, dual guide rails.
    - Mounting: Underside of base, mid-side on 1800mm segments, at pit floor (0mm elevation).
    - **Drive**:
    - Motors: 15Nm continuous, 30-40Nm peak, 1500 RPM (e.g., 130ST-M15015, 2.3kW).
    - Gears: 2:1 planetary, side-mounted (e.g., Neugart WPLE60), SFU2010 ball screw (10mm lead).
    - Drives: AASD-50A (or 40A if 2.3kW compatible).
    - **Config**: Side-mounted motors shrink actuator profile, maximize stroke in 1000mm length.

    #### Performance
    - **Speed**: 500mm/s (1500 RPM × 2 × 10mm).
    - **G-Force**: 5G (49m/s²) in bursts:
    - 170kg × 49 = 8330N, ~1388N per actuator.
    - 7.5Nm (geared) = 1649N at 70%, total 9894N (5.9G real-world).
    - Peak 15-20Nm for 6-8G spikes.
    - Burst: 0.0204s (0.0102s up, 0.0102s down), 5mm cycle.
    - **DoF Range**:
    - Heave: 1250mm.
    - Pitch/Roll: 45°+ (1000mm stroke / 900mm platform).
    - Yaw: 40°+ (1800mm base vs. 900mm platform).
    - Surge/Sway: ±625mm.

    #### Control
    - **Thanos AMC-AASD15A**: 6-axis, stroke set to 1000mm, 10mm lead, 500mm/s, calibrated for pit start.
    - **SimTools**: Maps 1250mm heave, 45°+ tilts, and 5G bursts to space sim telemetry.

    ---

    ### Why It’s Epic
    - **Pit Power**: Fully recessed in 500mm depth—actuators vanish below floor, platform flush at rest, rising to 1250mm.
    - **Motion Leap**: 25% more heave (1250mm vs. 800mm), 10°+ over #1’s angles, 5G vs. 4G—feels like a starfighter in your 2.5m x 2.5m room.
    - **Side-Mount Win**: Gears keep 500mm/s with 15Nm/1500 RPM motors, 1000mm stroke maxes out range without lengthening actuators.

    ---

    Space Eagle #2 is locked and loaded! You’ve got a bigger, meaner rig ready for Thanos and SimTools. Next move—part sourcing or pit prep? Let me know how it takes flight!
    Last edited: Feb 26, 2025
  2. runar totland

    runar totland Member

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    Grok;

    «Let’s dive into how "Space Eagle #2" will feel across space, plane, and car games, based on its locked specs. This 6DoF Stewart platform—designed for your 2.5m x 2.5m room with a 500mm pit—packs a 5G punch, 500mm/s speed, and a hefty 1250mm heave, making it versatile yet distinct for each gaming flavor. With its 1800mm base, 900mm platform, and 1000mm stroke actuators (tweaked for 1250mm heave), plus Thanos/SimTools control, here’s how it translates those dynamics into immersive sensations.

    ---

    ### Space Eagle #2: Locked Specs Recap
    - **Frame**: 1800mm hexagon base, 900mm hexagon platform (~40kg), 4080W extrusion, 5mm steel brackets.
    - **Payload**: 130kg (total mass: 170kg).
    - **Actuators**: 1000mm length, 1000mm stroke (1250mm heave via geometry), 850mm 14mm 4249 steel push rods, dual guide rails, underside-mounted in 500mm pit.
    - **Drive**: 15Nm continuous, 30-40Nm peak, 1500 RPM (e.g., 130ST-M15015), 2:1 planetary gears, SFU2010 (10mm lead), AASD-50A drives.
    - **Performance**:
    - Speed: 500mm/s (1500 RPM × 2 × 10mm / 60).
    - G-Force: 5G (49m/s²) = 8330N total, ~1388N per actuator (7.5Nm geared = ~1649N at 70%, 5G real-world).
    - Burst: 0.0204s (5mm up, 5mm down = 10mm).
    - DoF: 1250mm heave, 45°+ pitch/roll, 40°+ yaw, ±625mm surge/sway.
    - **Height**: Platform at ~0mm (room floor) retracted, max ~1250mm above floor.

    ---

    ### Feel in Space Games
    #### Dynamics
    - **Thruster Blasts**: 5G bursts (0.0204s, 10mm) hit like a sudden engine firing—sharp and visceral. ±625mm surge at 500mm/s feels like blasting off or quantum jumping.
    - **Zero-G Drifting**: 1250mm heave (2.5s full range at 500mm/s)—long, smooth ascents or drops mimic weightlessness. 45°+ pitch/roll (55°/s) and 40°+ yaw (50°/s) tumble you like floating debris.
    - **Combat**: 45°+ tilts snap you into rolls or banks—5G jolts simulate laser hits or thruster evasions. ±625mm sway weaves through asteroid fields with snappy precision.
    - **Re-Entry**: 1250mm drop at 5G (0.625s half-range)—a stomach-lurching plunge, like burning through an atmosphere. Surge tilts forward for that nose-down vibe.
    - **Docking**: 1250mm heave and 45°+ tilts—fine, controlled nudges feel like aligning with a station.

    #### Vibe
    - **Immersion**: Space feels vast—1250mm heave dwarfs "Space Eagle #1"’s 800mm, giving orbital hops or deep falls. 5G is punchy but brief, avoiding overwhelm—perfect for *Star Citizen* boosts or *Elite Dangerous* drifts.
    - **Caveat**: Gears (2:1) add ~5-10% lag vs. direct drive—motions are crisp but not instantaneous, slightly softening the sci-fi snap.

    ---

    ### Feel in Plane Games
    #### Dynamics
    - **Takeoff**: 5G burst (0.0204s) mimics runway acceleration—short but forceful. Surge (±625mm) pushes you back like climbing thrust.
    - **Banking/Turns**: 45°+ roll (55°/s) tilts you hard—feels like a jet fighter’s aileron roll. 5G lateral kicks simulate G-loads in tight maneuvers, though bursts cap at 10mm.
    - **Climbs/Dives**: 1250mm heave handles steep ascents (e.g., 500mm/s climb in 1s) or dives—pitch at 45°+ noses up/down convincingly. 5G adds heft to pull-ups.
    - **Turbulence**: Rapid 5G jolts (0.0204s) and ±625mm sway shake you like air pockets—45°+ tilts amplify the chaos.
    - **Landing**: 1250mm drop with 5G (e.g., 0.5s descent) thumps you down—surge brakes you forward.

    #### Vibe
    - **Immersion**: Plane games like *MS Flight Simulator* or *DCS World* shine—45°+ banks and 1250mm climbs/dives feel like a fighter jet or airliner. 5G mimics real G-loads (e.g., 4-5G in combat turns) but stays brief—less sustained than real flight (e.g., 10s at 4G).
    - **Caveat**: Limited yaw (40°+) and short bursts mean dogfights or stalls lose some realism—gears slightly dampen snap compared to rudder kicks.

    ---

    ### Feel in Car Games
    #### Dynamics
    - **Acceleration**: 5G burst (0.0204s) shoves you back—feels like a supercar launch (e.g., 0-60mph in 2s ~4-5G). Surge (±625mm) mimics forward thrust.
    - **Cornering**: 45°+ roll leans you into turns—5G lateral simulates high-speed bends (e.g., 1-2G real-world, amped to 5G briefly). ±625mm sway slides you like oversteer.
    - **Braking**: Surge reverses with 5G—slams you forward like emergency stops (real cars ~1G, feels exaggerated). 1250mm heave dips slightly for nose dive.
    - **Rough Terrain**: 1250mm heave bounces you—5G jolts (0.0204s) feel like hitting bumps or jumps at 500mm/s. Pitch/roll tilts amplify rally roughness.
    - **Drifting**: 40°+ yaw and ±625mm sway—slides you sideways, though yaw range limits full spin-out realism.

    #### Vibe
    - **Immersion**: Car games like *Forza* or *DiRT Rally* get a wild twist—5G and 45°+ tilts exaggerate corners and jumps beyond real cars (1-2G typical). 1250mm heave adds vertical flair (e.g., rally hops), rare in car sims.
    - **Caveat**: Gears’ ~5-10% lag softens gearshift snap—yaw (40°+) and short bursts don’t fully nail drifting or sustained G’s (e.g., NASCAR turns). More theatrical than precise.

    ---

    ### Across All Games
    #### Strengths
    - **5G Punch**: 0.0204s bursts (10mm) deliver sharp, thrilling jolts—space thrusters, plane pull-ups, car launches all feel intense without neck strain (safe at <0.1s).
    - **1250mm Heave**: Massive vertical range—space drops, plane climbs, car jumps feel epic compared to "Space Eagle #1"’s 800mm.
    - **45°+ Tilts**: Snappy rolls and pitches—space combat, plane banks, car corners lean you hard, immersive across genres.
    - **500mm/s**: Quick enough for responsive cues—half "Space Madness #1"’s 1000mm/s, but gear lag (~0.001-0.002s) is barely noticeable.

    #### Limits
    - **Gears**: 2:1 planetary softens response vs. direct drive—space snaps, plane rudder kicks, car shifts lose a touch of edge.
    - **Yaw**: 40°+—space spins, plane yaws, car drifts are decent but not extreme (e.g., 60°+ real jets/cars).
    - **Burst Duration**: 5G at 0.0204s—great for jolts, less for sustained G’s (e.g., 5s plane turns or car corners).

    ---

    ### Specific Game Vibes
    - **Space (Star Citizen)**: 5G thruster kicks and 1250mm zero-G floats feel like a starship—45°+ combat rolls are snappy, though yaw limits spin-outs. Sci-fi immersion shines.
    - **Plane (DCS World)**: 5G climbs and 45°+ banks mimic jet fighters—brief bursts fit aggressive maneuvers, but sustained G’s (e.g., 10s turns) need tuning down to 2-3G.
    - **Car (Forza)**: 5G launches and 45°+ corner leans exaggerate supercar thrills—1250mm jumps add rally flair, though drifting feels capped by 40°+ yaw.

    ---

    "Space Eagle #2" feels dynamic and punchy—space games get the most out of its 1250mm heave and 5G, planes enjoy the tilts and speed, cars lean into theatrical G’s and bounces. Neck-safe at 5G bursts—want to tweak for any genre specifically?
  3. runar totland

    runar totland Member

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    Asked Grok to suggest tweaks for "Space Eagle 1", and he had some suggestions;

    With "Space Eagle #1" locked in at 3G using your AASD-30A drives and 110ST-M06030 motors (6Nm continuous, 11-12Nm peak), it’s a solid, neck-safe rig for space games—compact (1000mm base, 500mm hexagon platform), punchy (500mm/s, 800mm heave), and versatile (35°+ pitch/roll, 30-35° yaw, ±400mm surge/sway). But there’s always room to tweak for better performance, comfort, or immersion without overhauling the core. Here are some suggestions—practical upgrades or adjustments based on your setup—pick what vibes with your goals!
    Current Specs Recap (Locked)
    • Base: 1000mm hexagon, 4080W, 5mm steel brackets.
    • Platform: 500mm hexagon (~575mm across), ~30kg, 4080W.
    • Mass: 140kg (110kg payload).
    • Actuators: 880mm, 650mm stroke (800mm heave), 700mm 14mm 4249 steel push rods, dual rails, 200mm risers.
    • Drive: 110ST-M06030 (6Nm/11-12Nm), AASD-30A, SFU2010 (10mm lead), direct drive.
    • Performance: 500mm/s, 3G (0.034s bursts), 35°+ pitch/roll, 30-35° yaw, ±400mm surge/sway.
    • Control: Thanos/SimTools, 3G cap.
    Tweak Suggestions
    1. Boost Heave Range (~1000mm)
    • Why: 800mm heave is great, but more vertical travel (e.g., 1000mm) enhances zero-G floats or re-entry drops—think "Space Eagle #2"’s 1250mm vibe on a smaller scale.
    • How:
      • Actuators: Swap to 1000mm length, 800mm stroke (e.g., extend SFU2010 length, ~$50-100/actuator). Geometry tweak could push heave to ~1000mm.
      • Risers: Raise to 300mm—adds clearance for longer actuators without pit mods.
    • Impact:
      • Heave: ~1000mm (2s full range at 500mm/s)—deeper drops, longer floats.
      • Cost: ~$300-600 (6 actuators), minimal frame tweak.
      • Feel: Space games gain cinematic depth; planes/car jumps feel bigger.
    • Trade-Off: ~1900mm max height (300mm risers + 1000mm heave)—needs ~2.4m ceiling (700mm clearance drops to 500mm).
    2. Increase Speed (750mm/s)
    • Why: 500mm/s is snappy, but 750mm/s (half "Space Madness #1"’s 1000mm/s) sharpens thruster kicks or plane maneuvers—less laggy than "Space Eagle #2"’s geared 500mm/s.
    • How:
      • Ball Screw: Swap SFU2010 (10mm lead) for SFU2015 (15mm lead)—3000 RPM × 15mm / 60 = 750mm/s (~$20-40/actuator).
      • Torque: 6Nm at 750mm/s = ~4.7kW theoretical—peaks (11-12Nm) handle bursts, continuous may drop to ~2G unless motors upgrade (e.g., 8Nm, ~$100 each).
    • Impact:
      • Speed: 750mm/s—0.023s bursts at 3G (8.5mm), ~1s full 800mm heave.
      • Cost: ~$120-240 (screws) or ~$720-840 (screws + motors).
      • Feel: Space combat snaps faster, plane banks pop, car shifts bite harder.
    • Trade-Off: G-force dips slightly (~2.5-2.8G continuous) unless motor power ups—software can cap at 3G with peaks.
    3. Enhance Yaw (~40°+)
    • Why: 30-35° yaw limits spins (space), rudder turns (planes), and drifts (cars)—pushing to 40°+ matches "Space Eagle #2"’s agility.
    • How:
      • Platform Mounts: Shift actuator attach points inward (~200mm from platform center vs. 250mm)—increases differential angle.
      • Software: Fine-tune Thanos for max yaw stroke—may need slight base mount offset (e.g., paired actuators closer).
    • Impact:
      • Yaw: ~40°+—more spin-out freedom.
      • Cost: ~$0-50 (mounting tweaks).
      • Feel: Space dogfights spin wilder, plane yaws feel jet-like, car drifts slide better.
    • Trade-Off: Minor heave/surge loss (~50mm)—worth it for rotational punch.
    4. Add Cooling for Motors
    • Why: 11-12Nm peaks at 3G (0.034s bursts) heat up 110ST-M06030 motors over long sessions—cooling extends burst uptime (e.g., combat loops).
    • How:
      • Fans: Mount 12V cooling fans (~$10 each) on each motor—duct to vents.
      • Heatsinks: Bolt-on aluminum fins (~$20/motor)—boosts dissipation.
    • Impact:
      • Durability: Sustains ~1s bursts vs. ~0.5s before thermal throttle.
      • Cost: ~$60-180 (fans or heatsinks for 6 motors).
      • Feel: Consistent 3G across hours—space battles don’t fade.
    • Trade-Off: Slight noise/weight—negligible for immersion.
    5. Upgrade Seat & Harness
    • Why: Basic seat and 5-point harness work, but a contoured racing seat enhances comfort and G-feedback at 3G—less "strapped in," more "cockpit."
    • How:
      • Seat: Bucket seat (e.g., Sparco, ~$300)—molds to body.
      • Padding: Add lumbar/shoulder foam (~$50)—softens 3G lateral.
    • Impact:
      • Comfort: Long sessions (e.g., 2h) feel plush, not stiff.
      • Cost: ~$350-400.
      • Feel: Space/plane/car G’s press you in—more pilot, less passenger.
    • Trade-Off: Payload rises (~5-10kg)—negligible at 6Nm capacity.
    6. Software Fine-Tuning
    • Why: Thanos/SimTools at 3G can feel sharper with custom profiles—current cap (1.6-1.7Nm) is conservative.
    • How:
      • Burst Boost: Allow ~4G peaks (11-12Nm, 0.01-0.02s) for rare jolts—e.g., space thrusters—then 2-3G sustained.
      • Game Profiles: Tweak curves—space (heave/yaw focus), planes (pitch/roll), cars (surge/sway).
    • Impact:
      • Feel: Space gets sharper kicks, planes tighter banks, cars punchier brakes—tailored immersion.
      • Cost: $0—just time.
    • Trade-Off: Slight neck strain risk at 4G bursts—keep <0.05s.
    Recommendation
    • Top Pick: Boost Heave (~1000mm) + Enhance Yaw (~40°+):
      • Why: Deepens space immersion (1000mm float) and agility (40° spins)—best bang for effort.
      • Cost: ~$300-650 (actuators + mounts).
      • Feel: "Space Eagle #1" bridges to #2’s grandeur, keeps neck-safe 3G.
    • Runner-Up: Add Cooling + Software Tune:
      • Why: Cheap (~$60-180), maximizes current hardware—consistent 3G, sharper cues.
      • Cost: Minimal.
      • Feel: Polishes the rig without rebuild.
    "Space Eagle #1" is locked as-is—hexagon holds strong! These tweaks juice it up—want to go for one (e.g., heave boost) or mix and match?
  4. runar totland

    runar totland Member

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    And follow up on SFU2015 and software/cooling tweaks;

    Solid call—sticking with the SFU2010 (10mm lead) keeps "Space Eagle #1" balanced and reliable at 500mm/s and 3G, maximizing your current hardware (110ST-M06030 motors and AASD-30A drives) without the trade-offs of the SFU2015. With cooling and software tuning locked in as tweaks, you’re set for a smooth, neck-safe ride that’s primed for space games. Let’s finalize the specs with these additions and lock it in for good!
    Space Eagle #1: Locked Specs (Final with Tweaks)
    Frame
    • Base: Hexagon, 1000mm sides (~1150mm across), 4080W aluminum extrusion (40mm wide sides down), 5mm steel corner brackets top and bottom.
    • Platform: Hexagon, 500mm sides (~575mm across), 4080W extrusion, estimated ~30kg.
    • Payload: 110kg (pilot + minimal gear).
    • Total Mass: 140kg.
    • Height:
      • Retracted: Platform top at ~400mm above floor (200mm risers + base/platform thickness).
      • Extended: Max ~1700mm above floor (800mm heave + 400mm base height).
    Actuators
    • Design:
      • Length: 880mm (retracted).
      • Stroke: 650mm, geometry tweaked for 800mm heave.
      • Push Rods: 700mm, 14mm 4249 steel, heim joints, dual linear guide rails.
      • Mounting: Underside of base, mid-side on 1000mm segments, 200mm risers off floor.
    • Drive:
      • Motors: 110ST-M06030, 6Nm continuous, 11-12Nm peak, 3000 RPM (~1.8kW continuous, ~2-2.2kW peak).
      • Cooling: Added fans or heatsinks per motor (~$10-30 each, total ~$60-180)—extends burst duration.
      • Drives: AASD-30A (~2.4kW capacity).
      • Direct Drive: SFU2010 ball screw (10mm lead)—locked at 500mm/s.
    Performance
    • Speed: 500mm/s (3000 RPM × 10mm / 60).
    • G-Force: 3G (29.4m/s²):
      • Total Force: 140kg × 29.4 = 4116N, ~686N per actuator.
      • Continuous: 6Nm = 3768N (theoretical), ~2638N at 70% efficiency—6 × 2638N = 15,828N (11.3G theoretical, >3G capable).
      • Peak: 11-12Nm = 6912-7544N (~4838-5281N at 70%)—6 × 4838-5281N = 29,028-31,686N (20.7-22.6G theoretical, capped at 3G).
      • Burst: 0.034s to 500mm/s (8.5mm up/down cycle)—cooling sustains ~1s vs. ~0.5s.
    • Degrees of Freedom (DoF):
      • Heave: 800mm.
      • Pitch/Roll: 35°+ (650mm stroke / 500mm platform width).
      • Yaw: ~30-35° (1000mm base vs. 500mm platform).
      • Surge/Sway: ±400mm.
    Control
    • Thanos AMC-AASD15A: 6-axis controller:
      • Stroke: Set to 650mm.
      • Lead: 10mm (SFU2010).
      • Torque: Tuned to 1.7-2Nm per actuator (686N at-efficiency) for 3G bursts, ~1-1.2Nm for ~2G sustained (>1s).
    • SimTools: Maps telemetry to 3G max acceleration (29.4m/s²), custom profiles (e.g., space: heave/yaw focus)—software tuned for sharper cues.
    Safety
    • Restraints: 5-point harness (secures pilot at 3G lateral/vertical), basic seat (no neck support needed).
    • Limits:
      • Hard: Mechanical stops at 650mm stroke (~1700mm max height).
      • Soft: Thanos capped at 3G bursts, ~2G sustained.
    • Kill Switch: Hand/foot—power cutoff backup.
    • Structure: 4080W frame, M8 grade 8.8 bolts—handles 4116N with ease.
    Power
    • Motors: 6 × 1.8kW continuous (~10.8kW total), ~13.2kW peak.
    • Supply: 220-240V single-phase, 20-30A breaker recommended.
    Why SFU2010 Stays
    • Balance: 500mm/s with 10mm lead keeps 3G consistent (6Nm = ~2.5-3G real-world)—SFU2015 (15mm lead) drops continuous G to ~2-2.2G, leaning too hard on peaks and heat.
    • Precision: 10mm/rev vs. 15mm/rev—smoother docking or slow maneuvers, less coarse than 750mm/s.
    • Simplicity: No actuator swaps ($120-240 + labor)—cooling ($60-180) and software (free) max your rig without downtime.
    Tweaks Locked In
    • Cooling: Fans/heatsinks added—sustains 3G bursts (~1s vs. ~0.5s)—keeps motors cool for long space battles.
    • Software Tune: Thanos torque bumped to ~1.7-2Nm for 3G peaks, SimTools profiles sharpened—snappier thrusters, smoother floats.
    "Space Eagle #1" is locked tight—SFU2010 stays, cooling and software locked in! You’re set for a crisp, reliable ride. Next step—grabbing those fans or tweaking Thanos?
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
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    I am certain that Grok has never built or experienced a motion simulator.

    Hence, can you please ask Grok to cite and link the actual sources for each suggestion and recommendation :grin
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  6. runar totland

    runar totland Member

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    I know, I know. :grin

    Just like the idea of doing something slightly different than what seem to be the standard shape and layout. There are so many possibilities to check out. Since I lack any tech knowledge, my easiest option (maybe not the best) is to run my ideas through Grok. Expect that I will need to tweak and re-do stuff.

    Grok did forget I had a head once, and wanted the sim to slam into the roof for maximum heave. And don't get me started on feet. Nah, feet are optional. :grin:grin
    Last edited: Feb 27, 2025
  7. runar totland

    runar totland Member

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    Grok says this about sources - in fact this forum is mentioned;

    "I didn’t pull from specific external documents or websites in real-time but relied on a mix of your input, physics principles, and practical insights into servo motors, ball screws, and simulator control systems like Thanos and SimTools.

    Sources & Foundations
    1. Your Input (Primary Source)
    • Hardware: You specified AASD-30A drives and 110ST-M06030 motors (6Nm continuous, 11-12Nm peak) for "Space Eagle #1," plus dimensions (1000mm base, 500mm platform, 880mm actuators, 650mm stroke) and goals (500mm/s, 4G initially, later 3G for neck safety).
    • Design Details: 4080W extrusion, 5mm steel brackets, 14mm 4249 steel push rods, dual guide rails, 200mm risers—your build specifics drove geometry and stability calcs.
    • Room Constraints: 2.5m x 2.5m with 500mm pit ("Space Eagle #2"), 2700mm x 3500mm with varying pits ("Space Madness #1"), and 5m x 5m x 5m with 1m pit ("Space Fantasy")—your spaces set the scale.
    • Goals: Space games focus (e.g., Star Citizen), later plane/car versatility, neck safety tweaks—your vision guided performance targets.
    2. Physics & Engineering Principles
    • Force & Acceleration: G-force calcs (e.g., 3G = 29.4m/s² × 140kg = 4116N) and torque-to-force conversion (e.g., 6Nm × 2π / 0.01m = 3768N) used Newton’s laws and ball screw mechanics.
    • Motion Range: DoF limits (e.g., pitch/roll = arcsin(stroke/platform width)) derived from Stewart platform geometry—650mm stroke over 500mm = ~35°+ for "Space Eagle #1."
    • Speed: RPM to linear speed (e.g., 3000 RPM × 10mm / 60 = 500mm/s)—basic kinematics for SFU2010/SFU2015.
    • Efficiency: Assumed ~70% real-world efficiency (friction, inertia losses)—standard for servo/ball screw systems.
    3. Hardware Knowledge
    • Motors & Drives:
      • 110ST-M06030 (6Nm/11-12Nm, 1.8kW) and AASD-30A (2.4kW) specs inferred from typical servo ratings (e.g., 3000 RPM, overload ~2x for ~1s)—aligned with your "11-12Nm bursts."
      • Higher models (e.g., 130ST-M15015, 15Nm) for "Space Eagle #2" based on servo scaling trends.
    • Ball Screws: SFU2010 (10mm lead) vs. SFU2015 (15mm)—trade-offs (speed vs. torque) from mechanical design norms.
    • Materials: 4080W extrusion (aluminum, 250MPa yield), 4249 steel push rods (600MPa)—strength estimates from common specs.
    4. Simulator Ecosystem
    • Thanos AMC-AASD15A: Tuning steps (torque ~1.7-2Nm for 3G) based on its role as a 6-axis servo controller—generic setup knowledge from DIY motion sim communities (e.g., torque limits, stroke settings).
    • SimTools: Profile tweaks (e.g., 3G cap, DoF mapping) from its standard use in sim rigs—axis assignments and scaling are typical features.
    • Community Insight: Cooling, safety (harness, limits), and feel (e.g., 3G vs. 5G bursts)—informed by general motion sim trends (e.g., forums like xsimulator.net or Discord chats), not direct quotes.
    No Formal Sources
    • No Docs: Didn’t cite specific manuals (e.g., AASD-30A datasheet) or websites—relied on internalized specs for servo motors (e.g., ~1.8kW for 6Nm at 3000 RPM) and ball screws (e.g., SFU2010 = 10mm/rev).
    • No Real-Time Lookup: Knowledge is pre-loaded—physics, servo mechanics, sim platforms—cross-checked with your inputs, not live searches.
    • xAI Build: As Grok 3, my responses blend your details with my training—think of it as a conversational workshop, not a bibliography!
    "
    Last edited: Feb 27, 2025
  8. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    My Motion Simulator:
    2DOF, DC motor, SimAxe, SimforceGT
    > Grok did forget I had a head once, and wanted the sim to slam into the roof for maximum heave.

    (The first time I hear that an AI actually tried to harm a human :grin )
    Very interesting that it used xsimulator for its LLM trainingsdata and that it links to us.:thumbs
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  9. runar totland

    runar totland Member

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    My plans are solidifying.

    We have a double-garage, which haven’t seen a car in a decade.

    Already used half of it to build a 2.6x7m gaming room for my kids. Was thinking maybe it could fit a 6dof motion sim, but will be way too cramped, and also only 2.2m ceiling.

    So… what to do?

    Still have another half, 2.6x7m garage left, used for storage and tools. I figure I can do with half for this usage…

    The gaming room will get an extension.:cool:

    2.6x3.5m should be good for a nice 6dof setup.
    However, 2.2m ceiling wont do. :think

    Preliminary plan is to dig down 800cm, extend ring foundation downward and get a propper 3m ceiling to have some fun with my upcoming Space Eagle 6dof setup. Then build a platform at original floor lever around it so in effect it will have a 80cm sunken pit.

    Attached photos of existing gaming room, will make a doorway across from the tv/open area we use for just dance and VR.

    Attached Files: