Wheelwright Craft

The spoked wheel is one of humanity’s great inventions — light, strong, and elegant. It replaced the heavy solid disc wheel and made faster, longer-range transport possible. Building a proper spoked wheel requires precision, patience, and an understanding of how wood handles stress. It’s one of the most satisfying crafts you can learn.

A well-made spoked wheel lasts 10-20 years of hard use. The skills in this article take months to develop, but once mastered, you become indispensable to any community with wheeled transport.

Spoked Wheel Anatomy

A spoked wheel has four main components:

• Hub: The center block, bored for the axle, with mortises (square holes) for the spokes
• Spokes: Thin, strong wooden members radiating from hub to rim
• Felloes (pronounced “fellies”): Curved sections of rim, each connecting 2-3 spoke ends
• Tire: An iron band shrunk around the outside of the felloes, holding the entire wheel in compression

Engineering Principles

Dish: A wagon wheel is not flat. The spokes angle slightly outward from the hub, creating a shallow cone shape (like a dinner plate). This is called “dish.” Purpose: when the loaded wheel hits a bump or rut, the spokes can flex slightly without breaking. A flat wheel is rigid and brittle under shock loads.

Gather: The front face of each spoke is angled slightly forward (toward the direction of travel). This compensates for the tendency of spokes to twist backward under load.

Stagger: In wheels with many spokes (12+), alternating spokes may be offset slightly along the hub to prevent the mortises from weakening each other.

Wood Selection by Component

Each wheel component needs different wood properties:

Component	Best Wood	Property Needed
Hub	Elm	Resists splitting from mortises
Spokes	Oak, hickory, ash	Strength, shock resistance
Felloes	Ash, elm, beech	Bends without breaking

Critical: All wood must be well-seasoned (air-dried 1-2 years). Green wood shrinks as it dries, loosening joints. The exception is the iron tire — it’s applied to a dry wheel and holds everything tight.

Hub Construction

Turning the Hub

The hub is a cylinder 20-30 cm diameter, 25-35 cm long, with a taper at each end.

On a lathe (ideal):

• Mount the hub blank between centers on a pole lathe or treadle lathe
• Turn to a cylinder, then shape the tapers
• The finished hub should be symmetrical and smooth

By hand (slower but works):

• Saw the blank roughly round
• Shape with drawknife and spokeshave, constantly checking roundness
• A template cut from a board speeds up checking

Mortise Cutting

This is the most demanding step. Each mortise must be precisely angled to create the correct dish and gather.

1. Mark the mortise positions around the hub. For a 12-spoke wheel, mortises are 30° apart. For 14 spokes, about 25.7°.
2. Each mortise is a rectangular slot, sized to match the spoke tenon (typically 3 × 5 cm).
3. The mortise angle determines the dish. Tilt each mortise outward from perpendicular by 5-8° (the dish angle).
4. Cut with a mortise chisel and mallet. Work from both sides to prevent blowout.
5. Every mortise must be identical in size and angle. This is where beginners struggle — the difference between a true wheel and a wobbly mess is millimeters of precision.

Axle Box & Bearings

The center bore of the hub rides on the axle. Options:

• Cast iron box: If salvageable. Press-fit into the hub bore.
• Steel sleeve: A section of steel pipe, driven into the hub.
• Hardwood liner: A plug of extremely hard wood (lignum vitae, ironwood, or dense oak) bored to match the axle. Grease frequently.

Spoke Making & Fitting

Spoke Shaping

Start with a riven (split, not sawn) billet of oak or hickory. Riven wood is stronger because the grain runs continuously through the piece.

1. Split a log into quarters, then eighths, then individual spoke blanks
2. Shape with a drawknife on a shaving horse — a traditional clamping bench
3. The spoke is rectangular in cross-section: thicker in the direction of the wheel’s load (top to bottom) and thinner side to side
4. Typical dimensions: 4-5 cm × 2.5-3 cm at the middle, tapering slightly toward both ends
5. The hub end has a rectangular tenon matching the mortise: 3 × 5 cm, 5-6 cm long
6. The felloe end has a round tenon, 2 cm diameter, 4 cm long

Driving & Fitting

Spokes are driven into the hub mortises with a heavy mallet:

1. Apply a thin coating of glue (animal glue, or none — the tire compression holds everything)
2. Align the spoke tenon with the mortise
3. Drive it home with firm, square blows. The tenon should bottom out in the mortise with a tight fit.
4. Check the dish angle with a straightedge from spoke tip to spoke tip. All spokes should touch the straightedge simultaneously.

If a spoke is loose in its mortise, glue a shim of hardwood veneer to the tenon before driving. A loose spoke is a failed wheel.

Felloe Construction

Steam Bending Felloes

Each felloe is a curved section of the wheel rim. A 12-spoke wheel typically uses 6 felloes, each spanning 2 spokes.

Steam bending process:

1. Build a steam box: A long wooden box (or large pipe) connected to a boiling water source. The wood sits inside in steam.
2. Steam the felloe blank for approximately 1 hour per 2.5 cm of thickness.
3. Remove the steamed blank quickly and clamp it to a bending form — a curved template matching the wheel’s radius.
4. Let it cool and dry on the form for at least 24 hours (longer is better — it will spring back slightly).
5. After drying, drill holes for the spoke tenons at the correct positions.

Jointing & Doweling

Felloe sections meet end-to-end between spokes. The joint must be tight:

• Cut the meeting faces square and flat
• Drill a dowel hole across the joint — a hardwood dowel locks the sections together
• When the iron tire is applied, it compresses the joints tight

Iron Tire Setting

The iron tire is the climactic step. When done right, it transforms a collection of wooden parts into a unified, incredibly strong wheel.

Forging the Tire

The tire is a flat iron bar (typically 5 × 1 cm or thicker for heavy wagons) bent and welded into a circular hoop.

1. Measure the wheel circumference precisely with a traveler (a small wheel gauge you roll around the rim)
2. Cut the iron bar about 1-2 cm shorter than the circumference. This is critical — the tire must be slightly smaller than the wheel so it compresses when applied.
3. Bend the bar into a circle on the anvil
4. Forge-weld the ends together to form a seamless hoop

Hot Shrinking Process

This is the most dramatic moment in wheelwright work:

1. Build a large fire (or use a tire-heating platform) and heat the iron tire until it’s uniformly red-hot. The metal expands.
2. Lay the wooden wheel flat on the ground, felloe-side up, on a tire-setting platform.
3. Quickly lift the hot tire with tongs and drop it over the wheel. It should just barely fit over the felloes when expanded.
4. Hammer it down to seat evenly on the rim.
5. Immediately quench with water — pour water over the tire from all sides. As the iron cools, it contracts, squeezing the felloes, spokes, and hub together with enormous force.
6. The joints tighten, the dish firms up, and the wheel becomes a single unified structure.

The hissing, steaming, smoking spectacle of a tire being set is unforgettable. But the timing must be right — too much delay and the tire burns the wood. Too little heat and it won’t shrink enough. Practice with a small model wheel first.

If the tire is too loose after cooling, it must be cut, shortened, re-welded, and set again. If it’s too tight, it can crush the felloes. Getting the initial measurement right (1-2 cm short of circumference for a typical cart wheel) is the key skill.

Wheel Repair & Troubleshooting

Common problems and fixes:

• Loose tire: The wood has shrunk (dried out). First try soaking the wheel in water for 24-48 hours — the wood swells and may re-tighten. If not, the tire must be removed, shortened, and re-set.
• Broken spoke: Replace with a new spoke of the same dimensions. Drive out the old tenon from the hub, clean the mortise, and drive in the new one. If a spoke breaks in the field, continue at reduced speed — a wheel can survive temporarily with one missing spoke.
• Cracked felloe: If the crack is in the outer face, the tire may hold it together. If the crack extends to a spoke hole, replace the felloe section.
• Worn hub bearing: The hub hole has worn oversize. Line it with a new hardwood or metal sleeve.

Wheel lifespan: A well-made spoked wheel with iron tire, kept properly maintained, lasts 10-20 years. Without the iron tire, expect 1-3 years before the felloes wear through. The tire pays for itself many times over.

Building your first wheel: Start with a small wheel (40 cm diameter) as practice. Use a wagon wheel pattern with 8 spokes. The skills transfer directly to full-size wheels once you understand the principles. Expect your first attempt to be imperfect — wheelwrighting is a craft that improves with every wheel you build.