The Gee Bee Model R, the Granville Brothers of Springfield, and the Racing Machine That Defined the Golden Age at Two Hundred Fifty Miles an Hour

The Gee Bee Model R was the fastest and most unforgiving racing airplane of its era. Built by the Granville Brothers of Springfield, Massachusetts, it set a closed-course world speed record of 252 miles per hour at the 1932 National Air Races in Cleveland, Ohio - faster than most military pursuit aircraft of the time. The machine that achieved this was, by almost any conventional measure, barely flyable.

What Did the Gee Bee Model R Look Like?

The honest description is a barrel. A painted barrel with a radial engine bolted to one end and a tiny tail on the other. The wings look like an afterthought, the cockpit sits so far aft that the pilot’s head is practically at the vertical stabilizer.

The dimensions confirm the impression: roughly 25 feet long with a 25-foot wingspan. The Granvilles had essentially built a flying square - and it was the fastest thing in the sky.

Who Were the Granville Brothers?

The Granvilles were not formally trained aeronautical engineers. Zantford “Granny” Granville, the oldest, had a near-instinctive feel for aircraft design. His brothers - Tom, Mark, Bob, and Edward - were mechanics and craftsmen who could make metal and wood do exactly what a drawing specified.

They came from a working-class New England family with no deep pockets, no wind tunnels, and no factory floor. What they had was a rented building at the Springfield, Massachusetts airfield that became one of the most consequential small aircraft operations in the world for about three years in the early 1930s. Their planes were called Gee Bees - G.B. for Granville Brothers.

How Did the Granvilles Get Into Air Racing?

They started with sport biplanes on the regional New England circuit - nothing that made headlines outside Massachusetts. But Granny had been watching the National Air Races and identified a pattern in the competition: existing racers were compromised. They were designed to be reasonable airplanes that happened to be fast.

Granny wanted to reverse that equation. Pilot comfort, forward visibility, landing margins, low-speed forgiveness - all negotiable. Speed was not. The engineering logic was straightforward: minimize drag, maximize power. Wrap the smallest possible airframe around the biggest possible engine, and nothing on the course can match you. The consequences of that approach were understood and accepted from the start.

What Was the Thompson Trophy?

The Thompson Trophy was the crown jewel of American air racing - a closed-course pylon race flown at low altitude, full throttle, around a set circuit. Whoever pushed an airplane fastest around that course went home with the trophy, the prize money, and a name known at every airfield in America.

Winning it in the early 1930s was the aviation equivalent of breaking a world speed record. For the Gee Bee, it literally was one.

The Model Z: Proof of Concept (1931)

The Granvilles built the Model Z for the 1931 National Air Races in Cleveland. The event drew a quarter million spectators - families spread across the infield, children pressed against fence wire, the air over the course carrying the smell of exhaust and castor oil from those big radials.

Lowell Bayles, one of the most capable racing pilots in the country, flew the Model Z around the Thompson course at 236 miles per hour. That was faster than most Army Air Corps pursuit aircraft flying that same year. A machine built by five brothers in a rented building had beaten everything the major manufacturers and the military could field.

Three months after that victory, Bayles was dead. While attempting a land speed record over Detroit, something went catastrophically wrong at low altitude. The exact cause was never fully determined - one theory held that a fuel cap came loose at speed and struck him - but whatever the sequence, he did not survive.

What Made the Gee Bee Model R So Dangerous?

The danger was structural to the design philosophy, not incidental. Reducing the airframe to minimize drag also reduced wing area. Less wing area raised the stall speed. The airplane wanted to fly fast at all times - including the moments you most needed it to slow down.

Shortening the fuselage reduced the tail’s leverage over the nose. A shorter moment arm made pitch inputs hypersensitive and the airplane reactive to small corrections. There was no margin for imprecision.

Two variants were built for the 1932 Nationals. The R-two ran a Pratt and Whitney Wasp Junior producing 535 horsepower. The R-one ran the larger Pratt and Whitney Wasp producing approximately 800 horsepower - in an airframe weighing roughly 3,000 pounds fully loaded.

For scale: a Cessna 172 has a 36-foot wingspan and produces about 180 horsepower. The Gee Bee R-one packed roughly four and a half times that power into an airframe with barely two-thirds the wingspan.

The torque from an 800-horsepower engine swinging a large propeller generated enormous rotational force on the airframe. At full power it pulled hard to one side. Any imprecision on the rudder from the moment of throttle advancement put the airplane ahead of the pilot - and its corrections were not gentle.

The cockpit position compounded every difficulty. Seated so far aft, the pilot’s forward view over the engine cowling while on the ground was nearly blocked. Takeoff required weaving the nose side to side to see ahead - a technique that demanded either extensive time in the seat or a level of physical intuition that was not widely distributed.

Jimmy Doolittle and the 252 mph Record

Jimmy Doolittle had that intuition, along with the engineering foundation to understand exactly what he was managing. By 1932 he held a doctorate in aeronautical engineering from MIT and had spent years testing and racing aircraft with methodical precision.

He flew the R-one in the 1932 Thompson Trophy race and averaged 252 miles per hour around the course - a world record for the event. Spectators described the sound of the Gee Bee coming around the far pylon as something between a scream and a roar, the engine note shifting as the airplane banked hard and the propeller loaded differently in the turn.

Doolittle landed, climbed out, and walked away from the Gee Bee on his own terms. By most accounts, he said he was done with it. He had made his point.

The Crashes That Followed

Not everyone walked away. Russell Boardman - a long-distance record holder with serious credentials - was attempting to fly the R-one at an air meet in Springfield in 1933 when the airplane ground-looped on takeoff. There was fire. Boardman was severely burned and died from his injuries months later.

The R-two changed hands repeatedly over the following years, each rebuild modifying it slightly, each pilot managing something a little different from what the previous one had flown. The margins never widened.

Granny Granville died in April 1934 in a crash at a small air meet in Spartanburg, South Carolina - not in one of the extreme racers, but in a Gee Bee sportster, one of the company’s tamer machines. The company did not survive long without him. Racing airplanes do not sustain themselves financially without consistent sponsorship, and that was always difficult for a small operation to hold together.

What Was the Gee Bee’s Lasting Impact on Aviation?

The easy reading of the Gee Bee story is that it represents recklessness - a less informed era we have since moved past. That reading is too simple.

The pilots who flew these machines were specialists operating at the frontier of what was knowable. Every flight extended the understanding of what a piston-engine airplane could be asked to do. Every failure mode fed information downstream. Engine manufacturers learned from what the radials endured at peak performance. Airframe designers mapped the limits of controllability in real time, with consequences that ran forward into every aircraft that followed.

The high-performance military fighters that appeared over Europe and the Pacific a decade later were, in part, an inheritance of what was learned on the Cleveland course and in that Springfield building. The refined cowlings, optimized cooling systems, understanding of propeller torque and how to counter it - that knowledge ran directly downstream into aircraft that shaped the outcome of a world war.

The races also mattered to the people watching. A quarter million people in the grandstands, families who drove in from across the Midwest, children at the fence who went home that evening certain of what they were going to do with their lives. The Gee Bees were part of that certainty: ugly, impractical, dangerous, and absolutely riveting.

Where to See a Gee Bee Today

The New England Air Museum in Windsor Locks, Connecticut has a full-scale reproduction of the R-two. Standing next to it - taking in the proportions, the enormous cowling, the inadequate-looking tail - makes the engineering choices legible in a way photographs do not fully convey.

Key Takeaways

The Gee Bee Model R was designed by Zantford “Granny” Granville around a single principle: maximum speed, with everything else negotiable - including pilot safety margins
Jimmy Doolittle flew the R-one to a closed-course world record of 252 mph at the 1932 Thompson Trophy race in Cleveland, then walked away from the airplane by choice
The design’s hazards were inherent: high stall speeds, hypersensitive pitch response, massive torque, and near-zero forward visibility from the cockpit
The Granvilles lost Lowell Bayles in late 1931, Russell Boardman died from crash injuries in 1933, and Granny himself was killed in April 1934 - the cost of operating deliberately at the edge of what was then knowable
The technical knowledge extracted from the Gee Bee program - cowling design, cooling optimization, propeller torque management - fed directly into the high-performance military aircraft of World War II