Zanzottera MZ 201 explained

The Zanzottera MZ 201 and MZ 202 are a family of twin-cylinder, in-line two-stroke, dual ignition aircraft engines designed for ultralight aircraft and motor gliders.[1] [2] [3]

The engine was originally designed and produced by Zanzottera Technologies of Italy, but the design was sold, along with the rest of the company's two-stroke ultralight aircraft engine line, to Compact Radial Engines of Surrey, British Columbia, Canada. Compact Radial Engines was then in turn acquired by Fiate Aviation Co., Ltd. of Hefei, Anhui, China in August 2017.[4]

Development

The MZ 202 was developed first as a 600NaN0 lightweight competitor to the liquid-cooled 640NaN0 Rotax 582. Later the MZ 201 was developed from the MZ 202 as a de-rated 450NaN0 version intended for motorgliders and single place ultralights that needed more power than the single-cylinder Zanzottera MZ 34.

The MZ 201 and 202 both have a cylinder barrels that are Nikasil-coated. The bore and stroke are the same as the single-cylinder MZ 34 engine. The MZ 201 features an optional recoil starter or electric starting, while the MZ 202 has electric starting only. The MZ 201 has a choice of a reduction drive belt or gearbox, while the MZ 202 offers just the gearbox with reduction ratios of 2.18, 2.55, 2.88, 3.11 or 3.66 to 1.[5]

The owners manual acknowledges the limitations inherent in the design of the engine, stating:

Variants

MZ 201
  • Twin-cylinder, air-cooled, two-stroke dual ignition 450NaN0 aircraft engine optimized for motorgliders and single place ultralights. Equipped with a single Tillotson carburetor.
    MZ 202
  • Twin-cylinder, air-cooled, two-stroke dual ignition 600NaN0 aircraft engine. Equipped with dual Bing carburetors.
    MZ 202i
  • Twin-cylinder, air-cooled, two-stroke dual ignition 670NaN0 aircraft engine. Equipped with electronic fuel injection, controlled by a computerized engine management system. No longer in production

    Applications

    MZ 201
    MZ 202

    External links

    Notes and References

    1. Cliche, Andre: Ultralight Aircraft Shopper's Guide 8th Edition, page G-10 Cybair Limited Publishing, 2001.
    2. Web site: MZ-201, 2 cylinders 2 stroke; comes with belt or gearbox. 2010-01-12. Compact Radial Engines Inc. 2009. https://web.archive.org/web/20130824180629/http://www.compactradialengines.com/mz201.html. 24 August 2013. dead.
    3. Web site: MZ-202, 2 cylinders 2 stroke complete with gearbox & clutch. 2010-01-12. Compact Radial Engines Inc. 2009. https://web.archive.org/web/20130824174034/http://www.compactradialengines.com/mz202.html. 24 August 2013. dead.
    4. Web site: Fiate Aviation. 23 November 2021. Fiate Aviation. fiate.net. 2018. https://web.archive.org/web/20210608204753/http://www.fiate.net/en/. 8 June 2021. live.
    5. Web site: Instruction and Maintenance Manual MZ 202. 2010-01-12. Compact Radial Engines. n.d..

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