The Stinson Reliant Gullwing and the Detroit Cabin Cruiser That Still Rules the Vintage Rows at Oshkosh

The Stinson Reliant Gullwing is a high-wing cabin monoplane built by the Stinson Aircraft Company of Detroit during the golden age of aviation between the two world wars. Its signature feature is a double-tapered “gullwing” - introduced around 1936 - that rises off the top of the fuselage, bends at the lift-strut attachment, and tapers to a slender tip. Designed as a luxury “cabin cruiser” for well-off private owners, it remains one of the most admired vintage aircraft on the field at EAA AirVenture Oshkosh.

What Is the Stinson Reliant Gullwing?

The Reliant is a big, radial-powered cabin monoplane sitting on fat tires, with a wing that doesn’t run straight out from the fuselage the way most do. It bends upward off the top of the cabin, then tapers back down toward the tip - a shape that stops people in their tracks on the vintage rows.

It was the executive airplane of its era: an enclosed cabin, comfortable seats, and room for the owner, his family, and a couple of friends. In the 1930s, this was the private aircraft of a man who had arrived.

Who Was Eddie Stinson?

Eddie Stinson was one of the great pilots of the golden age and the man whose name is on the tail. He came up flying in the years around World War I and could fly anything, setting endurance records by staying aloft for a full day and more - a genuine feat back when simply keeping an engine running that long tested both machine and pilot.

The whole Stinson family was aviation royalty before the term existed; his sisters flew too. In the mid-1920s, Eddie decided he was done flying other people’s machines and set out to build his own.

Why Detroit Mattered

Eddie set up shop in Detroit, and the location was no accident. In the 1920s, Detroit was the beating heart of American industry - the place where the automobile had already proven that a machine could be built well, built beautifully, and sold to a man who had done all right for himself.

Stinson looked at that and asked why an airplane should be any different. Why should flying mean sitting in an open cockpit in the wind and oil spray with a leather helmet strapped on? His answer was the cabin monoplane: an enclosed cabin with real seats and windows, an airplane a businessman could climb into wearing a good suit and step out of still looking like a gentleman.

The Early Stinsons and a Pilot’s Death

Through the late 1920s, early models like the Detroiter and the junior ships built the company’s reputation - solid, handsome cabin airplanes that sold well and flew honestly.

Then, in 1932, tragedy struck. Eddie Stinson was flying near Chicago when his engine quit at low altitude over a golf course full of people. Right to the last second he fought the airplane to keep it away from the crowd below. He clipped a flagpole, went down, and was killed - still a young man, still at the controls of a machine carrying his own name. He died the way many golden-age greats did: flying, trying to do the right thing with a dead engine and no altitude to spare.

The company he founded lived on.

What Makes the Gullwing Special?

The Reliant name first appeared in 1933, but those first Reliants had a straight wing. They sold fine but looked like a lot of other cabin ships of the era. The airplane we remember arrived around 1936, when Stinson’s engineers completely redesigned the wing into the double-tapered gullwing.

Most wings taper one way. This one tapers two ways at once:

From the front, the wing rises off the top of the cabin, bends at a hard point near the lift-strut attachment, then angles back down toward the tip - the same gull-bend idea seen on bent-wing warbirds, rendered gently on a civilian airplane.
From above, the wing is deep and fat where it joins the fuselage and narrows steadily to a slender, rounded tip.

That shape was engineering, not decoration. Putting the thickest, strongest structure against the fuselage placed it where the loads are highest. It gave the pilot a better view up and out over the cabin. And it produced gentle, honest stall manners - a well-designed taper lets the inboard wing quit flying before the tips do, so the pilot keeps aileron control right down into the stall. That’s the difference between an airplane that mushes and warns you and one that snaps a wing.

What Engine and Interior Did It Have?

Stinson hung a big radial engine on the nose. Different models used different powerplants over the years - Lycoming, Wright, and others - generally in the 250 to 300 horsepower range and up. Fire one up on a cool morning and you get the lumpy, uneven cough of cylinders catching one at a time, then that deep, syncopated round-engine rumble, along with the smell of warm oil, raw fuel, and hot metal.

Inside was the entire point of the airplane. Mohair upholstery, a real cabin, and room for four, sometimes five. Some interiors would embarrass a modern light airplane, built by people who cared about how flying felt, not just whether it worked. It was, in effect, a 1930s luxury automobile that happened to have wings.

The top of the line was the SR-10, the finest of the gullwings. By the late 1930s these were about as much airplane as a private owner could want - fast for the day, comfortable, and good-looking enough to turn heads at any airport in the country.

How Did the Reliant Go to War?

When Britain needed aircraft to train navigators and radio operators - before American factories fully turned over to fighters and bombers - a batch of Reliants crossed the Atlantic. The Royal Navy’s Fleet Air Arm flew them in military paint, doing the unglamorous but vital work of teaching young men to navigate and work a radio before they moved on to combat crews.

That gullwing cabin cruiser, born as a rich man’s runabout in Detroit, put on a uniform and went to war. Few airplanes have a life story like that.

Why Are Surviving Reliants So Rare?

After the war, surplus Reliants came home and could be had cheap, the way so many wonderful airplanes could for a few years. Many were used up hauling freight or left sitting in the weather. Fabric rotted, the wood in those wings dried out, and plenty of Reliants quietly disappeared one forgotten tie-down at a time.

That’s why every flying Reliant at Oshkosh matters so much - somebody saved it. Each one represents years of a person’s life: tracking down a fuselage in one barn and a set of wings in another two states over, learning to build up a wooden wing rib, to stitch and dope fabric tight as a drum, to find or fabricate a magneto for an engine that hasn’t been made in three generations. Type clubs keep the Stinson faith alive, sharing drawings and hard-won knowledge without which these airplanes would be gone.

The Living Heritage Behind the Restoration

This is the whole reason EAA exists and why pilots fly into this field every July. It began with the belief that an ordinary person, in an ordinary garage, could build an airplane or bring a dead one back to life - that the knowledge shouldn’t die, and that heritage isn’t something to hide behind velvet rope in a museum. It’s something you start up and fly and let the kids climb into.

When a gullwing Stinson taxis past on the grass with its engine loping and sun coming through those big cabin windows, you’re watching that idea made real. The golden age didn’t end. Someone just kept it airworthy.

Key Takeaways

The Stinson Reliant Gullwing was a luxury cabin monoplane built in Detroit, conceived by Eddie Stinson to bring automobile-style comfort to private flying.
The distinctive double-tapered gullwing arrived around 1936; the first 1933 Reliants had a conventional straight wing.
The gullwing’s shape was functional - placing the strongest structure at the root, improving visibility, and giving gentle, controllable stall behavior.
Powered by radial engines in the 250–300 hp range, the top-of-the-line SR-10 was among the finest private aircraft of the late 1930s.
Reliants served with Britain’s Royal Navy Fleet Air Arm as navigation and radio trainers, and surviving examples today owe their existence to dedicated restorers and Stinson type clubs.