Hummel Engines

Hummel 1/2 VW Conversion

Experimental and Ultralight Aircraft Engine Conversion Packages

Reliable Four-Stroke Power

Hummel Aviation Ultracruiser The Hummel 2 Cylinder VW — Powering the Hummelbird, Ultra Cruiser and other Experimental Amateur Built and Ultralight aircraft, Morry Hummel's 1/2 VW engine conversion plans have become a trusted standard in the aviation community.

The original Hummel conversion has been refined over time, allowing larger displacement and the options of NiCom aluminum cylinders, dual ignition, alternator and electric start.

Thatcher CX-4 built by Scott Casler Hummel 4 Cylinder Engines — Scott Casler's VW conversions are available for many popular homebuilts and Light Sport Aircraft. Hummel Engines have powered aircraft designs like the Sonerai, Sonex, Ultracruiser Plus, Aerosport Quail, Avid Flyer, Corby Starlet and others.

Now Flying...Scott Casler's own Thatcher CX-4!

Scott Casler operating CNC Vertical Mill Full Machining Services — Hummel Engines has the capability to perform the machining operations required for VW conversions, maintenance and upgrades.

Contact Scott with your requirements for a price quotation.

Scott Casler and J-3 Kitten Engine Seminars — Speaking in forums and clinics at several national and regional aviation events, Scott Casler has established himself as the leading source of 1/2 VW conversion information and products. With hundreds of hours of VW based flight time and a full line of parts and services, he has the experience and knowledge required to support your VW conversion.

VW Gathering 11th Annual VW Gathering — Join Hummel Aviation and other VW conversion enthusiasts for a day of fun, flying and forums!

NOTICE: Scott Casler will not be attending the Hummel VW Gathering this year

Saturday, July 7, 2012
Williams County Airport (0G6)
Bryan, Ohio

For more information, contact Hummel Engines or Hummel Aviation.

Price List

Engine Specifications

Event Schedule

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Motor Oil Information

Some modern motor oil formulations lack the lubricity needed for use in your VW conversion.

A Message from Scott

Approved by Falcon Insurance Agency

Complete 2 Cylinder and 4 Cylinder engine packages built by Hummel Engines can be insured.

Falcon Insurance can evaluate the insurability of your airframe and engine combination.

NiCom Aluminum Cyinders in stock!

Our own billet aluminum cylinders with Nickasil plating. Save 2 1/2 pounds per cylinder!

Available in 92mm and extended length 94mm sizes...ideal for long stroke conversions.

All Hummel Engines are available with dual ignition.

Call for details about our 2 Cylinder electric start and alternator options.

HUMMEL ENGINES - 5464 East Storey Road - Coolidge, AZ 85128 - (520) 723-5283 - (520) 518-4708 Mobile