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Coaxial Rotor Helicopter 3D Models and STL Files

This collection gathers 3D models built around coaxial and counter-rotating rotor layouts: toy copters, scale kits and individual blades. It is useful for 3D printing because the stacked rotor geometry is hard to source as a ready-made part, while an STL can be scaled and reprinted. Most entries come from hobby designers rather than manufacturers. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

O texto desta coleção está em inglês; a busca funciona em qualquer idioma.

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O Polyzon monta esta coleção a partir dos resultados de busca dos sites conectados. Repetições e modelos sem prévia são removidos, correspondências fracas vão para o final e o restante segue a ordem da busca. Os modelos pertencem aos seus autores — confira os termos na página de cada modelo.

Regras de seleção: equipe editorial do Polyzon · Texto atualizado em 14/10/2026

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«Coaxial Rotor Helicopter 3D Models and STL Files»

The models fall into a few groups. Some are small flying toys driven by a rubber band or pull string, where the rotor is a single printed piece. Others are scale kits of twin-rotor helicopters, often split into fuselage, rotor head and blade parts. A third group is spare geometry: blades, rotor clips and hubs meant to replace a broken part on an existing toy or model.

When choosing a model, read the author's page for the rotor diameter and overall length, since coaxial designs scale poorly if one rotor is resized alone. Check how many parts are involved, whether the blades print as separate pieces, and whether the author lists supports, layer height or material. Photos of finished prints show how thin the blade tips and hub walls really are.

To widen the search, try terms such as counter-rotating rotor, twin rotor, rotor head, blade set or pull-string toy, and look at related topics like helicopter scale models, drone propellers or RC rotor blades. Combining a rotor keyword with a size or material word usually narrows the list faster than browsing a whole category.

FAQ

Perguntas frequentes

What does coaxial rotor mean on a printed helicopter?
It means two rotors mounted on the same vertical axis, turning in opposite directions. The upper and lower blades cancel each other's torque, so no tail rotor is needed.
Do these models need supports?
It depends on the part. Flat blades and kit-card layouts often print without supports, while fuselages and rotor heads may need them. The author's page usually states what was used.
Can a printed coaxial helicopter fly?
Small rubber-band and pull-string toys can spin and lift briefly. Larger scale kits are usually static display models, so check the description to see which kind you are looking at.
How do I scale a rotor blade correctly?
Scale the hub and the blade together and keep the blade thickness in mind, since very thin tips become fragile at larger sizes. Reprinting a single blade to match an existing hub is often easier than resizing the whole model.
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