Hummel Engines, Hummel VW aircraft engine conversions, 2 & 4 cylinder WV conversions.

Ultralight Aircraft Magazine -
Reliable Four-Stroke Power
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. 
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 Building TEAM SuperMax
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.
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.

2 CYLINDERS ENGINES
 
28 hp    88 mm bore x 69 mm stroke   840 cc  85 to 103 lbs.
Options – New Case , Battery ignition, Dual ignition, Bed, Radial or Mosler mounting, Starter, Alternator
 
32 hp    92 mm bore x 69 mm stroke   917 cc   81 to 103 lbs.
Options- New Case , Battery Ignition , Dual Ignition, Aluminum NiCom Cylinders, Bed, Radial or Mosler Mounting, Starter, Alternator
 
37 hp    92 mm bore x 78 mm stroke  1037 cc  81 to 103 lbs.
Options-  New Case , Battery Ignition, Dual Ignition, Aluminum NiCom Cylinders, Bed, Radial or Mosler Mounting, Starter, Alternator
 
45 hp    94 mm bore x 86 mm stroke    1200cc 84 to 102 lbs.
Options -  New case, Battery Ignition, Dual Ignition,Starter,Alternator Bed, Radial or Mosler Mounting. ( Note ) This engine comes standard with Aluminum NiCom cylinders.
 
All 2 CYLINDER EGNINES CAN BE MADE WITH THE CUT CASE OR FULL CASE VERSION

 4 CYLINDER ENGINES
 
50 HP  85.5 mm bore x 69 mm stroke  1600 cc  140 to 160 lbs.
Options – Starter, Alternator , Accessory Case
 
60 HP  92 mm bore x 69 mm stroke  1835 cc   135 to 165 lbs.
Options- Starter, Alternator, Accessory Case, Dual Ignition, Aluminum NiCom Cylinders
 
76 hp  92 mm bore x 82 mm stroke   2180 cc   137 to 167 lbs.
Options- Starter, Alternator, Accessory Case, Aluminum NiCom Cylinders, Dual Ignition
 
85 hp 94 mm bore x 86 mm stroke  2400 cc 137 to 167 lbs.
Options- Starter, Alternator, Accessory Case, Aluminum Nicom Cylinders, Dual Ignition