Steering Knuckle Profile Axle vs Steering Wheel: Front Axle Basics
By eitech Metallbaukasten | Published: 2026-10-31
Category: How-to Guides
Learn how to fit an eitech steering knuckle profile axle and mount a black steering wheel to build a working front axle, with clear steps and mistakes to avoid.
Quick answer
Fit the steering knuckle profile axle first to create the pivot point, then mount the black steering wheel onto the steering column. Keep the knuckle free until the wheel is secure, and check that the axle turns without binding before tightening any screws.
Why the knuckle and wheel are not interchangeable
The steering knuckle profile axle (SKU 01583) is a structural pivot that connects the wheel hub to the axle beam. The black steering wheel (SKU 01572) is the control interface the builder turns. They serve different jobs: the knuckle carries load and sets steering geometry, while the wheel transfers motion. Mixing them up leads to a steered axle that either binds or has excessive play.
Because the knuckle is part of the Manufaktur line, it is designed to match other eitech profile axles. The steering wheel is a simple plastic part with a 28 mm diameter and a center hole for screw attachment. Neither part includes fasteners or a steering column in the listing, so you will need to supply those from your existing eitech stock.
When to use each part in a front axle build
Use the steering knuckle profile axle whenever you need a steerable joint at the wheel. It is the correct choice for front axle assemblies that must pivot left and right. Use the black steering wheel only at the driver position or where a hand control is needed. If you are building a simple non-steering axle, you can omit the knuckle and use a fixed axle instead.
One trade-off: the knuckle adds height and complexity, so it may not fit low-profile chassis without adjustment. The steering wheel is thin and light, but its plastic material means you should avoid over-tightening the center screw to prevent cracking.
Step-by-step: fitting the knuckle and mounting the wheel
- Prepare the axle beam: Attach the steering knuckle profile axle to the axle beam using the appropriate eitech screws and nuts. Leave the screws slightly loose so the knuckle can move freely. Checkpoint: the knuckle should pivot by hand without resistance before you proceed.
- Align the knuckle with the wheel hub: Slide the wheel hub onto the knuckle's profile axle. Ensure the hub sits flush and the knuckle arm points in the direction of steering travel. Common mistake: forcing the hub onto the profile can damage the axle splines; if it does not slide on, check for burrs.
- Secure the knuckle: Tighten the knuckle mounting screws evenly, alternating between them to avoid misalignment. Do not overtighten; the knuckle should still rotate smoothly. Checkpoint: re-check free movement after tightening.
- Mount the steering wheel: Place the black steering wheel onto the steering column so the center hole aligns with the column's screw hole. Insert the screw and tighten until snug. Common mistake: over-tightening can crack the plastic wheel; stop as soon as the wheel is secure.
- Connect the steering linkage: Link the steering column to the knuckle using your eitech steering arms or rods. Adjust the linkage length so the wheel turns the knuckle through its full range without binding. Checkpoint: turn the steering wheel lock-to-lock and confirm the knuckle follows smoothly.
- Final check: Test the complete front axle on the bench: turn the steering wheel and watch for any play or stiffness. Tighten any loose screws and re-check. If the steering binds, loosen the knuckle screws slightly and re-test.
Product facts
- Steering knuckle profile axle: The eitech Steering knuckle profile axle is a component from the Manufaktur line, SKU 01583, Standard variant. This identifies it as a compatible profile-axle part for eitech models, so you can match it to your existing axle system.
Steering knuckle profile axle - Steering wheel, black: The black steering wheel has a 28 mm diameter, plastic construction, and a center hole for screw attachment. The center hole means you must align it precisely with the steering column and use a screw that fits without forcing.
Steering wheel, black
