# Enceladus Within: cheaper truck mounts, aerial rigs and trees Research date: September 30, 2026. P011 extends the [engineering brief](engineering-research.md) and the [whole-artwork budgets](pricing-alternatives.md). **The strongest lower-cost direction is a dry-land, unoccupied moon: a low cradle for the first version, or a professionally assessed freestanding rig when floating is essential.** A truck can provide transport, a visual backdrop and approved power without being the sole support. No internal cameras are required for these versions. These are concept choices and quote briefs, not fabrication drawings or an approval to suspend a person. The historical boards depict an occupied sphere; the supplied v3 package's unoccupied development gate remains in force. We have no verified vehicle VIN/upfit specification, actual sphere mass, attachment rating, site soil data or signed venue placement. Product ratings below apply to the manufacturer's configuration, not automatically to this artwork. ## The economical choices, in order | Choice | What Andrew gets | Why it might cost less | Main unresolved issue | | --- | --- | --- | --- | | Low cradle or hemisphere | A convincing moon/ocean surface at audience height | Removes the overhead structure and its clearance problem | Wind restraint, surface durability and sightlines | | Independent portal beside the truck | A visibly floating moon, with the truck still part of the composition | Loads can go directly to the ground; truck integration becomes optional | Span, ballast/anchorage and support on sand | | Purchased or rented tall aerial rig | A reusable support with manufacturer documentation | Avoids designing every structural joint from scratch | Globe/leg clearance and approval for the globe's wind area | | Short, fixed truck structure | An integrated mobile-looking installation, parked for use | Eliminates telescoping sections, articulation and motorized motion | Chassis interface, reach and overturning still need design | | Assessed existing tree or venue support | A support that visually disappears | Saves purchased frame material if the site genuinely supports it | Permission and professional assessment can erase the saving | The cheapest suspension is not necessarily the cheapest artwork. A small ground screen with one projector can beat a low-price frame that forces a custom hanging envelope, complex setup and nightly weather recovery. Keep the existing [pricing workbench](https://thatsnozorb.muchadoaboutoneside.com/pricing/) for complete art costs; the support allowances below must not be added twice. ## Truck layouts worth pricing **A. Rear receiver crane with its own ground leg.** This is a real commercial category, not a boom inserted into an ordinary hitch extender. SpitzLift's receiver kit includes a 4-foot manual crane and a pedestal with a stabilizer leg; its published maximum is 700 lb. The manufacturer lists a 36.5-inch offset to clear the tailgate. It is a useful starting point for a material-handling quote, but its page does not approve a large sphere as an unattended scenic load, outdoor wind loading or human suspension. Price requires a configured quote. [Manufacturer product](https://spitzlift.com/receiver-hitch-crane/) and [2019 receiver cut sheet](https://spitzlift.com/wp-content/uploads/2019/03/14-RECEIVER-HITCH-SPITZLIFT-CUT-SHEET.pdf). **B. Bed-corner material crane.** HAUL-MASTER 61522 was listed at **USD 189.99** (regular USD 199.99). Its manual requires attachment to the truck frame rather than bed sheet alone, prohibits lifting people or loads over people, and lists 500 lb at the maximum 53⅜-inch boom extension. The winch only adjusts unloaded cable; the hydraulic ram raises the load. Treat this as a loading aid candidate, not a low-price substitute for the proposed show rig. Installation, suitable vehicle structure and ground support are additional costs. [Product price](https://www.harborfreight.com/1000-lb-capacity-pickup-truck-bed-crane-with-hand-winch-61522.html), [manual pp. 2–4 and 7](https://manuals.harborfreight.com/manuals/61000-61999/61522-193175501073.pdf). The geometric problem is independent of its weight rating: 53⅜ inches is about **1.36 m**, while the 3.4 m sphere has a **1.70 m radius**. Depending on where the boom pivots relative to the truck's rear/side edge, that may not put the sphere clear of the truck. A sloping boom has less horizontal reach than its length. A stronger winch does not fix insufficient reach or height. **C. Fixed chassis-mounted mast and short boom.** Remove the telescoping mast, projector arms and moving joints from the render. A fabricator can quote a fixed structure with an engineered truck interface and separately supported projectors. This reduces mechanisms, not the need to calculate lateral loads, fatigue, vehicle reactions and safe installation. The truck's tow rating and fifth-wheel rating do not establish a crane rating; adding two attachment points does not automatically divide load equally or create redundancy. This is a proposed configuration, with no verified manufacturer design yet. **D. Truck-assisted portal with ground-bearing legs.** Place a goalpost or portal behind/beside the parked truck and carry its gravity load down its own legs. The truck may locate part of the frame only if the design accounts for that connection. A removable ground leg at the outboard end can shorten the unsupported span, although it adds a foot/ballast zone and an audience obstacle. Tires, suspension and sand settle differently; do not improvise a rigid mixed support without calculating how the reactions change. This is the most useful custom truck-related quote to compare against a bought rig. **E. Trailer-based portal.** A dedicated equipment trailer can keep the truck available and carry the rigging kit, but requires its own structural design, stabilization and permitted placement. Trailer payload capacity alone is not an overturning check. Compare a complete parked setup, not just the trailer price. No trailer has been selected or verified. In all cases, put projectors on independently assessed stands if possible. Attaching them to the sphere support makes every movement both a structural event and an image-alignment problem. The truck remains stationary during use; transport configuration is a separate design case. ## What an aerial-rig version would actually need The concept load path is **documented support → approved connectors/suspension assembly → a spreader or cradle designed for the sphere → the unoccupied scenic object**. The inflatable shell, handles or inflation fittings must not be assumed to be suspension points. The sphere supplier needs to approve its attachment interface, orientation and pressure range. A rated top bar does not rate the shell beneath it. Use the rig manufacturer's approved attachment locations and restrictions. A qualified rigger should specify compatible hardware, how the object is raised and lowered, the inspection points and recovery procedure. Adding a pulley can increase the force at its support: a downward-running rope on both sides of a fixed pulley loads that point with both rope tensions. Mechanical advantage at the operator's hand does not mean the structure sees a smaller load. If orientation matters to projection, uncontrolled rotation is a problem. A swivel solves rope twisting but can defeat registration. Any anti-rotation restraint introduces additional forces and must be part of the assessed system. A secondary retention path also needs assessed geometry and catch loads; two lines sharing the same unsuitable attachment are not independent protection. ### Height is only the first fit check An illustrative space budget is: `support-point height ≥ sphere diameter + ground gap + bridle rise + hardware + movement allowance` For **3.4 + 0.3 + 0.6 + 0.2 + 0.3 m**, that is **4.8 m**. The extra dimensions are placeholders for comparison, not specified safe clearances. A nominal 16-foot rig is 4.88 m high, leaving almost no additional margin in this example; its actual attachment point may be lower. A 20-foot rig is a more plausible candidate to investigate. Neither number proves fit. The sphere must also fit between the sloping legs at **every elevation**, including its widest section, suspension spreader, projected light paths and permitted movement. A 5 m ground footprint does not provide a 5 m unobstructed space halfway up. Obtain the dimensioned leg/top-bar geometry and overlay the actual sphere envelope before paying for a rig. Include foot cables, ballast, exclusion area and an accessible route in the placement footprint. ### Products with useful primary documentation | Product | Observed hardware price, not a delivered quote | Useful facts / disposition | | --- | --- | --- | | X-POLE A-Frame | GBP 499.99 on the UK listing | Maximum stated bar height 3.48 m. The standard footprint chart is only 2.777 × 3.189 m there. Unsuitable geometry for the original 3.4 m globe; manual also excludes professional performance use and dynamic drops. | | JuggleGear MK3 | CAD 3,095; CAD 369 optional pulley system | 12/16/20 ft configurations. Manufacturer lists 566 kg WLL, distinct from its breaking load. The metric 20-ft footprint is 5.25 × 5.25 m, while the paired imperial label says 18 × 18 ft; reconcile that inconsistency before layout. | | CircusConcepts ACHILLE | CAD 3,999 displayed starting price; selected height/extras affect quote | 16/20/24 ft options with published attachment heights and footprints; tall candidate for fit study. Manufacturer's no-anchor statement for normal use does not approve the wind load of a large globe. | | Uplift Active adjustable rig | USD 849.99 displayed in its FAQ/product links | Useful low-cost training-rig comparison, not a selected full-size support. Product-specific geometry and allowed uses still need checking. | Sources: [X-POLE listing](https://x-pole.co.uk/pl/shop/aerial/a-frame/xpole-a-frame/), [2024 manual p. 12](https://x-pole.co.uk/wp-content/uploads/2023/04/A-Frame-Version-2.0-2024.pdf), [footprint chart](https://x-pole.co.uk/wp-content/uploads/2023/04/A-Frame-Footfall-August-2024.pdf), [JuggleGear MK3](https://jugglegear.com/aerial-rig-mk3-20ft-16ft-12ft.html), [ACHILLE](https://circusconcepts.com/shop/Freestanding-Aerial-Rig-Structure-ACHILLE-Tripod-24-ft.html), [Uplift FAQ](https://upliftactive.com/pages/faqs). JuggleGear's page metadata identifies CAD; the visible dollar symbol alone was ambiguous. Its page also has conflicting product-weight fields, so no transport weight is accepted here. No exchange-rate conversion, inventory reservation or manufacturer approval for Enceladus is implied. Rental or a local circus/theatre partnership may be cheaper than ownership for one event. Ask for the assembled configuration, equipment examination records, rigging supervision, ballast, delivery, load-in/out days, weather response and insurance together. A daily frame-only hire rate cannot be compared with a delivered, staffed package. No Miami aerial-rig rental quote has been obtained. ## Could a tree work? For a lightweight, unoccupied scenic moon, a tree is a **site-specific candidate**, not a free rated anchor. The tree, attachment point and load direction have to be evaluated together. A trunk diameter rule copied from a hammock guide is not a rating for a high, wind-exposed globe. Uplift's own guidance cautions against tree rigging and calls for both an arborist and an experienced rigger because hidden damage and changing tree condition matter. [Manufacturer guidance](https://upliftactive.com/pages/faqs). Love Burn's conduct policy explicitly addresses damage to flora, tree limbs, park infrastructure and ocean-water diversion. It does **not** grant permission to use a particular tree. The park's general visitor rules also restrict water activities and vehicle locations. Those general rules are not a substitute for the event's special permit and a written site-specific decision. [Love Burn conduct policy](https://theloveburn.com/consent), [park information](https://virginiakeybeachpark.net/park-information/). For a quote/approval request, identify the proposed tree and exact placement, show object mass and wind area, and ask who can approve temporary attachments. The arborist should assess health, roots and the particular limb/union; the rigger/engineer should assess forces, attachment method, neighboring structures and retrieval. Include how bark/root areas are protected and inspected. Do not cut, drill, prune, dig or rely on park furniture to make the concept fit. Two-tree suspension can be worse than one suitable overhead point. For an ideal symmetric static span, each side's tension is `T = W / (2 sin θ)`, where θ is measured above horizontal. At 30° each side carries tension W; at 10° it is about 2.88 W; at 5° about 5.74 W. These are explanatory equilibrium ratios, excluding wind, motion, unequal geometry and rope stretch—not a sizing method or a suggested rig. Pulling the line almost level greatly increases anchor demand. Avoid making a two-tree highline the budget baseline. For an occupied sphere, the problems expand to the person's support, dynamic motion, entrapment, entry/exit, ventilation and rescue. An aerial-rated frame or healthy tree does not resolve those. Keep this a separately commissioned system and retain the unoccupied alternative as a complete artwork. ## Wind, scale and the real source of savings A 3.4 m sphere presents **9.08 m²** of frontal area; a 2 m sphere presents **3.14 m²**, or about **35% as much**. At the same conditions, reducing diameter reduces both the projected surface to illuminate and the area exposed to wind. This is a stronger cost lever than replacing one hoist with a cheaper hoist. For intuition only, use `F = ½ ρ V² Cd A` with assumed air density 1.225 kg/m³, diameter 3.4 m and **illustrative** Cd = 0.47. Calculated steady drag is about **209 N at 20 mph, 470 N at 30 mph and 836 N at 40 mph**. A 2.5 m lever turns the last into roughly 2.09 kN·m before other loads. These are not design wind loads, safe operating speeds or shutdown thresholds. Surface roughness, deformation, seams, attachments, turbulence, gusts and support geometry alter the result. NASA specifically explains that sphere drag varies with Reynolds number. [NASA shape/drag explanation](https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/shape-effects-on-drag/). The physical designer must supply the actual load cases and operational wind plan: monitoring location, thresholds, who decides, how early lowering starts, how long it takes, where the object is secured, and what happens on power loss. Ballast, ground-bearing pressure and sliding matter on sand. Water adds changing buoyancy, current/wave loads, electrical exposure and recovery difficulty; it is not included in the cheaper dry-land options. ## Support-only budget alternatives The following USD figures are **Codex planning allowances**, not sourced vendor quotes. They cover the stated support work only, before tax and contingency. They exclude sphere/screen, projectors, media equipment, content, general event transport, insurance and any human-bearing system. Do not multiply them by a generic safety factor or read their upper end as a guaranteed ceiling. | Concept | Hardware/fabrication | Review and specialist assessment | Ground interface / install allowance | Support subtotal | | --- | ---: | ---: | ---: | ---: | | Low cradle, 1.5–2 m prototype | $300–1,200 | $500–1,500 | $300–900 | **$1,100–3,600** | | Truck-adjacent ground portal | $1,500–4,500 | $600–1,800 | $600–2,200 | **$2,700–8,500** | | Fixed truck cantilever | $2,500–7,000 | $1,200–3,500 | $800–2,500 | **$4,500–13,000** | | Tall documented freestanding rig | $2,500–6,500 | $800–2,400 | $1,500–4,800 including suspension | **$4,800–13,700** | | Approved tree, light unoccupied prop | $200–800 | $1,300–4,500, arborist + rigger | $500–2,000 | **$2,000–7,300** | For the tall-rig allowance, the hardware band is a budgeting placeholder for a delivered configuration; it is not a conversion of the Canadian listings. A one-off rental may move it substantially. If the real quotation exceeds the band, change the budget or scope. The tree option may be rejected before any hardware is bought. A fixed truck mount can cost more than a complete aerial rig once custom upfitting is included. The existing pricing workbench includes projector count, daily rate, chargeable days, external capture, contingency and documented credits. Use it to compare the finished experience. For a small first version, prioritize one good image, one accessible interaction and a controlled viewing side over nominal 360° coverage with an unproven surface. Dropping internal cameras removes capture integration; dropping movement removes a separate tracking problem. ## Standards and the quote packet ESTA currently lists **ANSI E1.21-2024** for temporary ground-supported outdoor entertainment structures and **ANSI E1.43-2025** for performer flying; the older 2016 performer-flying edition is superseded. Their applicability and the local approval basis belong to the qualified designer and authorities. Their titles are not certifications of this concept. The public catalogue was search-readable; direct download-page access returned 403 during this check, so this research does not claim a complete clause-by-clause review. [ESTA published standards](https://tsp.esta.org/tsp/documents/published_docs.php). Send one bounded technical brief when Andrew chooses to seek quotes: 1. **Experience and geometry:** unoccupied, dry land, actual diameter/weight, surface and certified attachment details, audience routes, required viewing sides and scale drawing with the complete swept envelope. 2. **Site and support:** placement coordinates, allowable footprint, terrain, permitted ballast/anchors, truck identity and upfit restrictions if used, tree identity/owner permission if proposed. 3. **Operation:** stationary versus moving, unattended periods, setup crew, daily inspection, weather monitoring/lowering, power-loss recovery and access. 4. **Priced deliverables:** delivered equipment, engineering, installation, ground protection, supervision, transport, rental days, insurance/permits, exclusions, validity period and reusable versus event-only costs. 5. **Acceptance evidence:** manufacturer approval for the configuration, structural/rigging review, documented inspection and commissioning, venue signoff and an actual optical prototype. Human occupancy needs its own scope. No manufacturer, arborist, venue or grant committee has been contacted in this research. No purchase, application or physical test has been performed. The next useful physical experiment is the small ground-supported optical sample; the next useful procurement comparison is a tall rig against a ground-bearing portal, with the same unoccupied sphere specification supplied to both.