Dale Drake, later of Meyer-Drake Offy fame, was working with Leo Goosen on a flat 2 cylinder air cooled engine for midget use in the mid 30's. He apparently did not feel the design was adequate and opted for a Harley Davidson converted to liquid cooling with integral cylinders and heads. At 89 cubic inches, it was smaller than an Offy but had more torque making it very suitable for slippery dirt ovals.

The famous Indy driver Bill Vukovich campaigned one of these “Poppers” very successfully in California's Central Valley early in his career. The “Popper” name came from the way the engine exhaust sounded at low speed.
Block Manufacturer : Dale Drake; Drake Machine Corp.
Crankcase Manufacturer: Harley-Davidson Motor Company Block Material : Cast Iron and Alloy
Cylinders : 2
Cubic Inches : 89
Bore :
Stroke :
Block Year : 1937
Head Manufacturer : Dale Drake; Drake Machine Corp.
Head Material : Cast Iron
Cam : In Crankcase
Cam Drive : Gear
Carburetion : Riley
Head Year :
We're constantly discovering new information about our collection. If you have additional information on this item, please let us know!
Large Image

Harley-Davidson 'Knuckle Head', Drake, Midget Racing

 
View Larger View Larger
  • Harley-Davidson 'Knuckle Head', Drake, Midget Racing
  • Harley-Davidson 'Knuckle Head', Drake, Midget Racing
  • Harley-Davidson 'Knuckle Head', Drake, Midget Racing
  • Harley-Davidson 'Knuckle Head', Drake, Midget Racing
  • Harley-Davidson 'Knuckle Head', Drake, Midget Racing
mouse over the thumbnails for alternate views
CLOSE [X]
Engine: Harley-Davidson 'Knuckle Head', Drake, Midget Racing
Item #:
15341
Email a Friend
Close [X]
Tell a friend
Fill out the fields below and click 'send'. Your friend will receieve an email with the picture of this museum piece and a link back to our site.
Harley-Davidson 'Knuckle Head', Drake, Midget Racing
Your Name:
Your email:
Their Name:
Their email:
Personal Message: