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Austro-Daimler 6

I-6 piston aircraft engine family

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionApr 14, 2026
Entity authorityQ783801 ↗
Source-derived summary

The Austro-Daimler 6 was a series of Austrian six-cylinder water-cooled inline aero engines first produced in 1910 by the Austro-Daimler company.

Design and development

The first Austro-Daimler six-cylinder engine was designed by Dr-Ing Ferdinand Porsche to be an aircraft engine from the outset. Of high quality manufacture, the Austro-Daimler was modestly rated at relatively low rpm, which gave the engine family a reputation for robustness and reliability.

Features of the Austro-Daimler included welded steel water jackets (originally copper), seven main bearings and large diameter inclined inlet and exhaust valves opened by dual action push-pull rods and closed by spring pressure.

The single-overhead cam (SOHC) valvetrain of later engines was driven from the crankshaft through the usual vertically-oriented shaft as the contemporary Mercedes D.III was, but the Austro-Daimler had its vertical camshaft drive system mounted at the front of the engine instead, and not the usual aft-end placement of other Central Powers straight-six SOHC liquid-cooled aircraft powerplants, like the Mercedes and BMW designs.

The Austro-Daimler inspired many imitators such as the Mercedes D.II, Benz Bz.IV and Hiero 6. Limited availability of the Austro-Daimler engines forced some aircraft manufacturers to substitute Mercedes (the German Daimler company) engines in their aircraft, due to greater availability. From 1913, the 90 and 120 hp models were produced under license in Scotland by William Beardmore and Company. The Beardmore 120 hp went on to power many British military aircraft during WW1.

Variants

Data from:

Austro-Daimler 90 hp 6-cyl.

Editorial summary

“Austro-Daimler 6” enters the record as i-6 piston aircraft engine family. Crown Archives preserves that source wording while asking what Austro-Daimler, piston and aircraft can confirm, complicate or overturn.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1910, 1913—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Austro-Daimler, piston and aircraft.
Editorial analysis

Why this record matters

“Austro-Daimler 6” is worth following because a concise public description often conceals a longer documentary argument. Here, Austro-Daimler, piston and aircraft provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Apr 14, 2026. The linked authority identifier is Q783801. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1910 and 1913.

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Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Source & attribution

This entry incorporates text from “Austro-Daimler 6” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.