Design the tub around the load paths
Generated from
content/lms/suspension-and-chassis-design/06-chassis-architecture/02-monocoque-and-semi-monocoque.md; edit the source file, not this page.
Source path: content/lms/suspension-and-chassis-design/06-chassis-architecture/02-monocoque-and-semi-monocoque.md
Course: Design suspension geometry that actually wins races
Module: Design the structure that carries it all
Estimated duration: 60 minutes
Principle: the tub is a load-path machine
A monocoque, semi-monocoque, honeycomb tub, or carbon composite molded car is not good because it looks more modern than a spaceframe. It is good only if the structure gives the loads somewhere sensible to go. The chassis has to be torsionally rigid enough that the suspension can do its job, strong enough not to break, light enough not to become a permanent handicap, and arranged so the major brackets, bulkheads, skins, and local reinforcements carry real forces rather than decorative loads. That is the core skill in this lesson: you do not draw a tub and then add pickups. You identify the forces first, then make the tub around the paths those forces need to follow.
The corpus gives you a clean rule from two directions. Costin and Phipps describe design as beginning as a set of forces that later become chassis members, and they warn that material choice comes after the design has been settled. Staniforth adds the practical version for tubs and chassis: suspension loads do not stop when they arrive at the chassis, and the structure must accept them with as little distortion as possible. Put those together and the tub becomes a routing problem. Your job is to route wheel, spring, damper, power-unit, accessory, and aero loads through the shell without asking a thin panel, a bracket foot, or a convenient flat area to do a job it was not designed to do.
This lesson sits next to spaceframe lessons in the same module, so the focus here is not how to triangulate a tube frame. The useful transfer from the spaceframe material is the discipline of thinking in load paths. A true spaceframe makes the force lines visible as tubes. A tub hides those lines inside skins, cores, bulkheads, brackets, inserts, and local plies, so you have to be more deliberate. If the force line is not visible on the drawing, it still exists in the car. The structure will find a path whether you designed one or not.
Start before the first panel: specification and layout
Before you begin detailed tub work, establish the overall specification and weight range. Costin and Phipps make this the first step because weight affects the structure, wheel sizes, and tyre sizes. The same is true whether the car is a single-seater or a two-seat sports car. For a tub design, the weight range is not just a number for the scale sheet. It tells you the expected wheel loads, the spring and damper loads, the acceleration and braking loads, and the scale of structure needed around the cockpit, suspension bays, and powertrain.
You also decide the power unit and transmission arrangement early. The source material is clear that the type and position of the power unit must be decided in the draft design stage. That is not because the engine is the subject of this lesson. It is because engine position, gearbox layout, final drive arrangement, foot room, exhaust routing, and weight distribution all shape the tub. A front-engined sports car with a combined gearbox and final-drive unit has different structural interruptions and different mass placement from a rear-engined single-seater. If you leave that until after the tub shape feels settled, the later packaging fix will usually cut across the cleaner load path.
The first practical move is to make a load-path map, not a body shape. Mark the wheels, the tyre contact patches, the suspension pickups, the spring and damper input points, the steering rack or steering linkage, the engine and transmission mounts, the driver bay, the fuel location if it is part of the main structure, and any aero structure that will feed load into the car. Then connect each item to the next real support. If a lower wishbone pickup feeds a bulkhead, the bulkhead has to take the load into the rest of the tub. If a pushrod drives a rocker and a vertical spring-damper, the rocker bay is not just packaging. It is a major load introduction point. If a wing, floor, or high-downforce bodywork loads a mounting point, that load must enter a stiff structure, not a flexible local patch.
The wheel is the source of several different loads
It is tempting to talk about a pickup load as if it were one arrow. Van Valkenburgh gives a better way to think. At the wheel, longitudinal force comes from braking or accelerating, lateral force comes from cornering, and vertical force comes from weight and aerodynamic loading. The hub also sees torques related to cornering, brake torque or bearing friction, and steering or aligning torque. The important design consequence is that a tub pickup does not see one clean textbook load in one direction. Braking can cause deflection or steering pull, bumps can cause steering reaction or camber change, and movements in one direction can create forces or movement in another direction.
For the intermediate designer, that means you should draw each pickup with multiple arrows. For a front lower wishbone pickup, include braking, cornering, bump, and torque reactions. For a rear lower pickup, include drive, braking, lateral cornering, and vertical load interaction. For a damper or spring mount, include the load from the wheel rate you intend the car to have, not the convenient mount load you wish it had. The map should feel busy. If it feels tidy too early, you have probably hidden one of the loads.
Staniforth gives a useful severity ranking for suspension loads. The major suspension loads emerge from the coil spring and damper units, followed by the lower rear wishbones, top rear wishbones, front lower wishbones, and front top wishbones. Do not treat that ranking as a universal stress report for every car, but use it as a practical warning. The spring and damper input points are not secondary details. The lower links, especially at the rear, are not brackets you place after the shape is attractive. They are among the places where the tub must be most honest.
The pickup rule: feed loads on useful axes
Costin and Phipps show the ideal suspension bracket arrangement as one where the bracket feeds load into the chassis on the same axes as the linkages involved. They also show that offsets can become the acceptable compromise when other design factors prevent the ideal. In a tub, the same principle applies even when the bracket is bonded, bolted, riveted, or locally reinforced rather than welded to a tube. The bracket is not the load path. The bracket is the doorway. The load path is what the load sees after it passes through that doorway.
When you place a suspension pickup on a tub, ask four questions. First, what direction does the linkage want to push or pull? Second, what part of the tub immediately receives that direction? Third, how does that receiving area pass the load into a bulkhead, side panel, floor, upper skin, or other closed structure? Fourth, what secondary bending or twisting did you create by offsetting the pickup from that path? If you cannot answer those questions, the drawing is not ready for material selection.
The wrong habit is to make the outside shape of the tub, then attach pickups where there is space. That often creates a strong-looking bracket connected to a weak local area. It may pass a static pull test and still let the suspension deflect under combined load. The driver then feels a car that will not repeat itself. The engineer then chases springs, dampers, bars, or alignment, even though the real problem is that the chassis is moving. Staniforth states the consequence bluntly in engineering terms: a flexible chassis defeats every objective of the suspension designer.
Torsional rigidity is not a luxury number
Costin and Phipps warn that good roadholding depends on a good chassis and that even advanced suspension will not provide adequate roadholding unless the chassis is torsionally rigid. Van Valkenburgh frames the same goal as making the chassis torsionally stiff enough to let the suspension do its job while remaining far from the ultimate strength limit. This is a useful distinction. Ultimate strength asks whether the structure breaks. Torsional rigidity asks whether the structure moves enough to corrupt the suspension while it is still unbroken.
For a tub, that distinction matters because a monocoque can look substantial while still having weak openings, soft pickup zones, or poor load transfer across the cockpit. Costin and Phipps describe the cockpit as a critical area for stiffness in frame design, and the lesson carries over to tubs. The cockpit creates a large hole in the structure. The driver needs access, visibility, and safety space. The chassis needs continuous load paths around and across that hole. The design problem is not solved by calling the shell a tub. The shell must still carry torsion around the open volume.
Uniform stiffness also matters. Costin and Phipps note that if one part of a structure is too stiff, loads and deflection can concentrate elsewhere and lead to fatigue. In tub design, that warns against simply adding massive local reinforcement at every frightening point without considering where the load goes next. A very stiff pickup insert attached to a panel that has no continuation can move the problem outward. A strong local patch can turn the edge of the patch into the fatigue line. Good structure spreads the load into the tub, not just around the bolt.
Strength, stiffness, and light weight must be designed together
Staniforth gives the practical triangle: rigidity, strength, and light weight are all central in a tub or chassis. Heavy chassis are a handicap that cannot be removed, weak chassis break, and flexible chassis ruin the suspension. This is why the tub design cannot be treated as a simple make it stronger exercise. Adding material without a load path may add weight faster than it adds stiffness. Removing material without understanding the path may create a flexible or fragile region. You are trying to put material where force actually travels.
Costin and Phipps describe the broader compromise as rigidity on one hand and lightness and accessibility on the other. That compromise is not an excuse to be vague. It is a design accounting exercise. If you need a door opening, cockpit access, foot room, steering clearance, exhaust space, or service access, write down what load path that opening interrupts and how you are restoring it. If you need an inferior structural path to gain a superior suspension mechanism or avoid unacceptable aerodynamic disturbance, record that as a conscious trade. The source material explicitly allows that such compromise may be necessary. What it does not allow is pretending the compromise has no cost.
The tub should also avoid making small mounts into structural traps. Costin and Phipps warn that even relatively small items such as the coil, fuel pump, voltage control, and exhaust pipe need early thought, and that they should not be mounted in the middle third of a chassis member unless there is no alternative. For a tub, translate that into a broader rule: accessories are not free. A bracket for an exhaust, pump, electrical component, duct, or panel can inject vibration, local bending, or torsion into a part of the structure that was not designed for it. Exhaust mounting is a clear example because the exhaust is connected to an engine that moves and vibrates. The mount must restrain vibration without feeding unwanted torsion into the chassis.
Material comes after architecture, even in composites
Composite construction gives you more freedom, but it does not remove the load-path problem. Van Valkenburgh notes that in serious engineering design, the optimum material can vary by location in the same part. A beam may need different fibers or layers for compression, tension, and impact properties. Composite fabrics can mix carbon, Kevlar, and glass in the same cloth, and racing tubs often show mixed weave patterns. The lesson is not to choose a fashionable fiber. The lesson is to choose what each location needs after you know the local job.
For a tub, think in zones. Around suspension pickups, the job is to accept concentrated loads and spread them into the shell. Around the cockpit, the job includes carrying torsion around openings while preserving driver space and access. Around the floor and side structures, the job may include shear transfer and stiffness. Around impact-prone or abrasion-prone areas, the job may include toughness as well as stiffness. Around aero or spring-damper mounts, the job may include repeated high loads with limited local movement. The corpus does not give a laminate schedule, and you should not invent one. But it does support the decision order: architecture first, local material needs second.
This also helps you separate monocoque from semi-monocoque thinking. In a pure ideal, the skin and shell carry much of the load. In a semi-monocoque, skins, bulkheads, frames, local reinforcements, and attached structures share the work. The practical design question is the same: which part is actually carrying each load? If a panel is present mainly as closure or aerodynamic surface, do not let yourself count it as a primary structural member unless it is designed, attached, and validated for that job. If a stressed bodywork panel is part of the car concept, then its attachments and continuity become structural design, not bodywork detail.
The suspension does not forgive a soft tub
Deakin and colleagues describe the suspension design process as choosing desired wheel rates and damping, then designing a suspension system that exhibits those rates. They also emphasize kinematics and compliance analysis to understand actual wheel rates, effective spring and damper rates, geometry, and how each wheel moves relative to the body. That work assumes the body is a trustworthy reference. If the tub flexes at the pickup, rocker, spring mount, or damper mount, the suspension system the tyre experiences is not the one you drew.
This is where tub design becomes directly relevant to a driver. A driver may report that the car takes a set differently from lap to lap, that a damper change produces less effect than expected, that alignment settings do not hold behavior, or that braking produces a steering pull or toe-feel change. Van Valkenburgh's wheel-force discussion explains why that can happen. Loads in one direction can create movements in another. The tub and pickups are part of the compliance chain. If they move, they become an unwanted spring or steering input.
The calibration cue is simple: a good tub makes suspension changes more legible. It does not guarantee the setup is correct, but it gives the setup a stable platform. When you change a spring, bar, damper, alignment, or ride height, the car should respond in a way that roughly matches the mechanism. If changes feel muted, inconsistent, or coupled to unrelated behaviors, inspect the structural path before assuming the driver or the setup sheet is wrong.
Downforce raises the price of flexibility
Trevor Harris, as reported by Staniforth, connects downforce and stiffness directly. High downforce with a flexible chassis is not a serious combination. Rigidity includes suspension links, uprights or hub carriers, and mounting points. This expands the tub lesson beyond the shell itself. A stiff tub with flexible uprights or weak mounting points still gives the tyre a moving reference. A high-downforce car with a soft mounting structure lets aero load change geometry and platform in ways the driver feels as balance shift, nervousness, or inconsistency.
For a monocoque or semi-monocoque, aero load should be included in the original load map, not added later as bodywork. If the car uses floors, wings, splitters, tunnels, or stressed bodywork, ask where those loads enter the tub at speed. Then ask what happens when those loads combine with braking, cornering, bump, and ride-height change. The corpus does not give an aero structural calculation here, so do not invent one. It does give the design discipline: downforce and stiffness belong together, and mounting points are part of rigidity.
Testing is part of the design, not an insult to the designer
The bond is unusually direct about validation. Harris says designers may assume they have done good work and resist actual testing, but they must remember they can make mistakes and be willing to change. Deakin and colleagues describe manufactured suspension designs being evaluated with data logging and kinematics and compliance rig tests. Smith's collection also points toward mathematical modeling, four-post testing, and vehicle-dynamics methods. The lesson is that the tub drawing is an argument, not proof.
Your validation plan should match the level of the car. At minimum, review the load-path drawing against the physical structure and check that every pickup, spring-damper mount, engine mount, and aero mount has a credible path into the tub. For a serious build, use kinematics and compliance analysis to find whether the wheels move relative to the body as intended. Use data logging where it can distinguish body motion, wheel motion, and handling response. Use physical inspection after running to find witness marks, cracks, fretting, loose fasteners, or local panel movement around load introductions.
Do not overclaim what one test proves. A static check may prove that a bracket does not fail under one direction of load. It may not prove that the tub is torsionally stiff enough under combined braking, cornering, vertical, and aero load. A data trace may show a symptom, not the root cause. A compliance rig may expose a movement that still needs interpretation. The professional habit is to combine the drawing, the model, the physical test, and the driver report until they agree well enough to act.
Worked example: Formula SAE single-seater tub as a rates-and-pickups problem
The University of Leeds Formula SAE material is useful because it describes the chain from desired vehicle behavior to actual suspension design. First, vehicle dynamics selects appropriate spring and damper rates as seen at the wheel. Then the suspension system has to be designed to exhibit those rates. Kinematics and compliance analysis determine actual wheel rates, effective spring and damper rates, and geometry. For a tub designer, that means the chassis is not downstream of suspension design. It is one of the things that decides whether the suspension design becomes real.
Imagine a narrow single-seater tub with pull rods or push rods feeding rockers and vertical spring-damper units. Staniforth notes that modern narrow Formula One forms encourage pull-rod or push-rod layouts with rockers and vertical spring-damper units because a top rocking arm would need awkward pivots outrigged in space. The load-path lesson is immediate. The rocker bay and spring-damper mount are major structural areas, not just packaging boxes. The suspension layout may be elegant, but the tub must receive those loads without local distortion.
The correct process is to place the suspension mechanism and the tub load path together. Put the pickup axes, pushrod or pullrod line, rocker pivot, spring-damper force direction, and nearby bulkhead or reinforced shell path on the same drawing. If the rocker load feeds a small local patch, redesign the patch into a load-spreading structure. If the front bulkhead is only a closure panel, it is not enough. If the spring-damper unit is vertical because that helps the body shape, the vertical load still has to be carried into the tub. The mechanism and structure win or lose together.
Worked example: David Gould and the hillclimb monocoque discipline
Staniforth describes David Gould's successful amateur designs as following three maxima: highest possible rigidity, careful suspension design, and a major step forward in concept. Gould's first full honeycomb monocoque took the British Hillclimb Championship in its first season, and later he succeeded with a heavily modified Ralt carbon tub. You do not need to copy those cars to learn from them. The important lesson is the ordering of values. Rigidity and suspension design are not competing hobbies. They are paired design conditions.
For a hillclimb car, the load cycle is intense even if the run is short. The car must respond immediately, and small inconsistencies matter because there are few laps to average out driver adaptation. A honeycomb monocoque or carbon tub can be the right architecture because it can combine stiffness and lightness when the load paths are clean. But the concept still has to earn its way. If the tub is rigid in the easy panels and weak at the suspension pickups, the material label does not save the car. If a modified carbon tub changes the pickup load paths without restoring the structure, it may look more advanced while becoming less trustworthy.
The practical takeaway is to treat an existing tub as a structure with history, not as blank material. When modifying a tub, ask what loads the original designer expected and what loads your new suspension, tires, aero, weight, or powertrain will add. If you move a pickup, alter a rocker, change a damper position, increase downforce, or add a bracket, you have changed the argument the tub was making. The tub may still be usable, but it needs a fresh load-path audit.
Worked example: high-downforce GTP tub discipline
The Staniforth chunk around Trevor Harris refers to a new tub for the 1988 Nissan GTP car and ties high downforce to stiffness. This is a different design environment from a club-built sports racer, but the lesson scales down. When downforce becomes large enough to matter, it enters the structure as real load. It changes wheel loads, suspension loads, and the demand on mounting points. A flexible tub lets the aero platform and suspension reference move at the same time, which makes both harder to tune.
The design response is not just thicker material. It is to include aero load introductions in the same map as suspension loads. Where does the wing load enter? Where does underbody load react? What mounts see combined aero, braking, and cornering load? Are the suspension pickup points, uprights, hub carriers, and mounting points rigid enough as a system? Harris's point includes more than the central tub: rigidity includes links, uprights, hub carriers, and mounting points. If one of those is flexible, the car does not care that the rest of the tub is impressive.
Common mistakes and what good looks like
Mistake one is choosing the material first. A builder decides carbon, aluminum honeycomb, or sheet construction will solve the problem, then draws a shape. Good looks like drawing the force map before the material map. Only after the loads and paths are credible do you choose local materials, skins, core, inserts, and reinforcements.
Mistake two is treating pickups as bracket placement. The bracket may be strong, but the structure behind it may be weak. Good looks like placing each pickup so its primary load enters a bulkhead, closed section, reinforced shell path, or other real structure with minimal unnecessary offset.
Mistake three is solving ultimate strength but ignoring stiffness. The part does not break, so the designer calls it done. Good looks like asking whether the pickup, panel, or tub moves enough to change wheel rate, geometry, toe, camber, steering feel, or damper effectiveness.
Mistake four is adding local reinforcement without continuation. The insert becomes very stiff, but the edge of the patch becomes the new failure or flex point. Good looks like spreading the load into surrounding structure so stiffness changes gradually enough to avoid concentrated deflection and fatigue.
Mistake five is letting packaging silently cut the structure. Foot room, cockpit access, exhaust routing, engine placement, and service access are real constraints. Good looks like recording each compromise and designing an alternate load path around it.
Mistake six is ignoring spring and damper loads. The wishbone bracket gets attention while the rocker, pushrod, pullrod, or damper mount is treated as secondary. Good looks like treating spring-damper inputs as some of the major loads in the car.
Mistake seven is chasing setup around chassis flex. The car will not respond cleanly, so the engineer changes dampers, bars, springs, or alignment. Good looks like checking the structure when setup changes produce inconsistent or coupled symptoms.
Mistake eight is refusing to test. The drawing feels convincing, so the builder avoids compliance checks, rig work, data review, or physical inspection. Good looks like expecting some assumptions to be wrong and using test evidence to find them before they become a trackside mystery.
Drill: one-hour tub load-path audit
At your next shop session, do this as a drawing drill before you touch a grinder, drill, layup table, or CAD detail. Use the actual car if you have one, or the concept drawing if you are still designing. The drill takes one hour and produces four marked sheets.
For the first fifteen minutes, draw the plan and side view of the tub or semi-monocoque shell with only the important load points: tire contact patches, suspension pickups, spring-damper inputs, rocker pivots if used, steering mounts, engine and transmission mounts, driver opening, major bulkheads, floor or side panels, and aero mounts. Do not draw body styling.
For the second fifteen minutes, add arrows. Use separate colors or line styles for braking and drive, cornering, vertical load, spring-damper load, steering or aligning torque, engine and exhaust mounting load, and aero load if the car has meaningful aero. The success criterion is not prettiness. It is whether every major load has a visible direction and a visible receiving structure.
For the third fifteen minutes, circle every place where the load enters through an offset, a thin local panel, an unsupported bracket, a hole edge, a cockpit opening, a middle-span accessory mount, or a structure whose job you cannot explain. These circles are not failures yet. They are questions.
For the final fifteen minutes, write one action beside each circle. Use one of four actions: align the pickup better, spread the load into a bulkhead or closed structure, accept the compromise because another mechanism is more important, or test the area before committing. The drill is successful when every circled area has an action and no major pickup or spring-damper load ends at a mystery panel.
When to accept an imperfect structural path
Costin and Phipps are realistic about compromise. They note that a designer may accept an inferior structure to gain a superior mechanism, avoid unjustifiable aerodynamic disturbance, or preserve suspension geometry. That is important because the correct lesson is not rigid purity. A race car is a pile of conflicting requirements. The skill is to know when you are compromising and what the compromise costs.
A good compromise is explicit. You can say what structural ideal you gave up, what performance mechanism you protected, how much you expect the structure to suffer, and how you will validate it. A bad compromise is invisible. You moved a pickup because the body looked cleaner. You added a hole because access was annoying. You mounted an exhaust or pump where it was convenient. You assumed the tub would take it because tubs are strong. The car may run, but the load path has become accidental.
The professional habit is to keep a flexible mind without losing the load-path discipline. Costin and Phipps say a designer must be prepared for early ideas to change as detail considerations appear. That is not weakness. It is how the design gets better. If a pickup location, powertrain position, exhaust route, or aero mount forces a poor structural path, change the package if you can. If you cannot, redesign the local structure and test the result. The tub is not finished when it has a shape. It is finished when the loads have somewhere believable to go.
Worked example: Formula SAE tub as a rates-and-pickups problem
A Formula SAE single-seater makes the load-path problem compact enough to see. The desired wheel rates and damping may be selected through vehicle-dynamics work, but those rates only become real if the suspension system and the tub exhibit them. If a pushrod, pullrod, rocker, or vertical spring-damper unit feeds a flexible local bay, the wheel does not see the clean rate the designer intended. The worked move is to draw the pickup axes, rocker loads, damper loads, and tub reinforcement on the same sheet, then make the rocker bay and bulkhead part of the primary structure rather than packaging afterthoughts.
Worked example: David Gould hillclimb monocoque discipline
David Gould's hillclimb cars show the value order for a successful tub: rigidity, careful suspension design, and a meaningful step forward in concept. A honeycomb monocoque or modified carbon tub is not automatically correct. It becomes correct when the suspension loads, weight target, and structural concept work together. The audit for a modified tub is especially strict: each new pickup, damper position, aero load, or powertrain change must be checked against the original load paths instead of assuming the existing shell can absorb the change.
Worked example: high-downforce GTP tub discipline
The high-downforce GTP context raises the stakes but uses the same rule. Downforce and stiffness belong together, and rigidity includes the suspension links, uprights, hub carriers, mounting points, and tub. The structural map must include wing, floor, and bodywork loads wherever they enter the car. The wrong answer is simply adding local thickness around a mount. The better answer is to route aero loads into the same coherent structure that already carries suspension and wheel loads, then test rather than assume.
Common mistakes
The common errors are choosing material before load paths, treating pickups as bracket placement, proving strength while ignoring stiffness, adding local reinforcement without load continuation, letting packaging silently interrupt structure, underestimating spring and damper loads, chasing setup around chassis flex, and avoiding tests that might prove the drawing wrong. Good work looks different in each case: forces are drawn before materials are chosen, brackets feed useful axes, stiffness is checked as well as strength, reinforcement spreads load into the shell, compromises are recorded, damper and rocker loads get structural priority, setup symptoms are checked against compliance, and testing is treated as part of design.
Drill: one-hour tub load-path audit
Spend one hour on four sheets. First draw only the tub, pickups, spring-damper inputs, steering mounts, powertrain mounts, cockpit opening, bulkheads, and aero mounts. Next add arrows for braking, drive, lateral, vertical, spring-damper, steering or aligning, accessory, and aero loads. Then circle offsets, unsupported brackets, thin local panels, hole edges, cockpit interruptions, and unexplained load endings. Finally assign each circle one action: align it better, spread it into a bulkhead or closed structure, accept the compromise for a named mechanism, or test it before committing. The success criterion is that no major load ends in an unexplained panel or bracket.
When to accept an imperfect structural path
The corpus supports compromise when another requirement is genuinely more important, such as suspension geometry or aerodynamic disturbance. The difference between good and bad compromise is whether you can name the cost and validation plan. If the structure is made worse to protect a better mechanism, write that down and test the affected area. If the structure is worse only because a bracket, hole, or accessory mount was convenient, the design is not mature enough.
Author Review
No quiz questions are attached to this lesson.
Sources
| # | Document | Chunk | Pages | Score | Collection |
|---|---|---|---|---|---|
| 1 | Racing and Sports Car Chassis Design Costin Micael Phipps David | b76a342e-5c16-6bd3-cb79-1b1626ca1ceb | 32 | 1 | uio_books_raw_v1 |
| 2 | Competition Car Suspension Design Construction Tuning Staniforth | 7be110cc-73be-027d-6b73-8187cf153fef | 66 | 1 | uio_books_raw_v1 |
| 3 | Racing and Sports Car Chassis Design Costin Micael Phipps David | 92415aa0-0a4f-c8be-f37b-7e3780c6bd50 | 32 | 1 | uio_books_raw_v1 |
| 4 | Racing and Sports Car Chassis Design Costin Micael Phipps David | 8c4cec2b-f19c-73e2-3d06-47e084bbfa27 | 110 | 1 | uio_books_raw_v1 |
| 5 | Race Car Engineering Mechanics Paul Van Valkenburgh | ca7a3241-be1f-1f6f-b111-5291d7865790 | 96 | 1 | uio_books_raw_v1 |
| 6 | Race Car Engineering Mechanics Paul Van Valkenburgh | 33a36355-186c-850f-fbbd-e74c05a2156e | 21 | 1 | uio_books_raw_v1 |
| 7 | Racing Chassis and Suspension Design Carroll Smith | 641284b1-db2d-2ec6-42ff-218f9b509d67 | 128 | 1 | uio_books_raw_v1 |
| 8 | Competition Car Suspension Design Construction Tuning Staniforth | 52c09a48-202a-10c0-3b4d-9e1dad4802bd | 145 | 1 | uio_books_raw_v1 |
| 9 | Racing and Sports Car Chassis Design Costin Micael Phipps David | 60dc13f5-b86b-1e2a-13f6-6da0f24a9f73 | 123 | 1 | uio_books_raw_v1 |
| 10 | Racing and Sports Car Chassis Design Costin Micael Phipps David | 4f93c1bf-26b9-7014-db55-42d7245ad689 | 21 | 1 | uio_books_raw_v1 |
| 11 | Racing and Sports Car Chassis Design Costin Micael Phipps David | ead4ce53-c6ae-5a4c-2a93-7567140f03d5 | 73 | 1 | uio_books_raw_v1 |
| 12 | Competition Car Suspension Design Construction Tuning Staniforth | e21b3668-beb1-861f-3ec2-62762a514708 | 189 | 1 | uio_books_raw_v1 |
| 13 | Racing and Sports Car Chassis Design Costin Micael Phipps David | 1d4ff083-706a-e9f3-607f-60c68e359f89 | 4 | 1 | uio_books_raw_v1 |