Round Magic

A beautiful engine.

There are two types of people in the world; those who like round engines, and everyone else. Shane Madson from Westlock, Alberta, Canada falls soundly in the first category. His highly modified J3 Cub sports a Verner 9S nine-cylinder radial produced in Czech Republic. Madson hopes to become the Canadian distributor for Verner Motors.

Changing the oil filter is definitely an easy task on the Verner. Also visible is the electronic ignition pickup ring.

Other Verner radials start with three cylinders, and go up to nine cylinders in increments of two (3, 5, 7, and 9-cylinders). The radials range in horsepower from 43 BHP to 158 BHP. The largest, Scarlett 9S nine-cylinder engine is installed on Madson’s Cub.

All the Verner engines are direct drive, slow turning affairs. In other words, they sound like a “proper” radial.

Madson’s custom Cub is an unusual match for the Verner radial. He reports that most find their home on warbird replications, both WW I and WW II.

Dual sparkplugs and a beautiful exhaust, as well as a custom engine mount are available.

Verner 9S Details

  • Price: $26,500 (USD)
  • Weight: 238 lb dry
  • HP: 158 HP @ 2400 RPM (takeoff), 136 hp @ 2300 RPM (Cruise)
  • Number of cylinders: 9
  • Reduction Drive: None
  • Bore & Stroke: 92mm x 102 mm
  • Compression Ratio: 7.8:1
  • Size (Displacement): 372 cu-in / 6084 cc
  • Fuel: 95 octane minimum
  • TBO: 1000 hrs.
  • Ignition: Duel Electronic
  • Carburetor: S & S Slide, Marvel Schebler, or fuel injection

Madson hopes to become the Canadian representative for Verner. He can be reached via the Mad Custom Cubs website,

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Bill Repucci
Bill Repucci was handed his Private Pilot’s certificate back in the days when the written test was taken with a Number 2 pencil. At the time, Bill was told that he now had a “License to Learn.” And learn he did, mostly that there was humor buried in the quirky ways of those of us who call ourselves aviators.



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