Wittman Tailwind W-10

The Wittman Tailwind is Steve Wittman's iconic plans-built two-seat high-wing taildragger, first unveiled at the inaugural EAA fly-in in 1953 and refined through the 1960s into the definitive W-10 variant. Sylvester J. "Steve" Wittman (1904–1995) was a legendary air racer and race-plane designer, and the Tailwind embodies his philosophy of extracting maximum speed from minimum airframe — a "speed on the cheap" homebuilt that, on modest Lycoming or Continental power, outruns many certified four-place cruisers burning twice the fuel. Over 350 Tailwinds have been completed worldwide, and the design remains one of the most respected plans-built cross-country machines in the experimental fleet.

Construction is classic Wittman: welded 4130 steel tube fuselage, wood-spar/wood-rib wings (some builders have executed metal wings via the Callbie conversion), and fabric covering throughout. The airplane is small, tight, and fast — a side-by-side two-seater with a narrow cabin and spring-steel main gear of Wittman's own design. Owners tend to be experienced taildragger pilots who value speed, fuel efficiency, and the satisfaction of flying something they built themselves from a stack of drawings.

The W-10's tapered wingtips (late-1960s update from Steve Wittman) simultaneously raised top speed and lowered stall speed — an unusual combination that made the W-10 the dominant variant.

The Tailwind's reputation as a fuel-sipping speedster is well-earned. CAFE Foundation flight-tested a 160 hp Lycoming O-320-powered W-10 in 1994 and recorded a cruise of 188 knots (216 mph) true on 9.6 gph at 7,000 ft — a specific range that shames most certified singles. More typical owner-reported cruise on a 150 hp O-320 is 155–165 KTAS at 8.0–8.5 gph.

Real-world performance is highly sensitive to build quality: rigging, fabric tautness, cowling fit, wheel-pant installation, and propeller selection can swing cruise speeds by 15+ knots between two otherwise identical airframes. A well-built Tailwind with a Catto or Sensenich composite prop and clean cowl will easily top 170 KTAS; a rough build with gaps and poor fairings may barely crack 145.

Stall characteristics are reasonably benign for a small fast airplane — the W-10's tapered tips give a warning burble, and the break is gentle, stalling around 55 mph (48 KIAS) clean. Landing is the Tailwind's hardest skill: short-coupled, narrow gear, high approach speed (70–75 mph over the fence), and a tendency to float make three-point landings an acquired taste. Wittman's tapered-rod landing gear is famously forgiving of small bobbles but will bite a careless pilot with a swerve on rollout.

With a max gross of 1,425 lbs and an empty weight of 876 lbs (typical W-10 with O-320), useful load is 549 lbs. Working the tradeoffs:

• Full fuel (35 gal, 210 lbs) + 2 pax (340 lbs): Total 550 lbs — right at gross. Two 170-lb pilots with a toothbrush each.
• Full fuel + pilot + 180 lbs of cabin load: Pilot and passenger of normal weight, basically no baggage — the Tailwind's cabin has almost no baggage space anyway (maybe 20 lbs behind the seats).
• Two 200-lb pilots + baggage: Must reduce fuel to ~25 gal (150 lbs), giving 4 hr endurance and ~550 nm still-air range at 155 KTAS cruise.
• Solo pilot, full fuel: 350 lbs of useful load left after fuel and pilot — the airplane becomes a legitimate 700+ nm cross-country machine on the 35 gal tanks, approaching the 690 sm factory range figure.

Heavier builds (some W-10s come in at 950+ lbs empty) can reduce useful load to 475 lbs, which makes two-adult flying with any fuel reserve marginal. Empty weight is a critical pre-buy data point.

Related pages: cross-country, local-fun-flying, valuation-methodology, insurance-underwriting, maintenance-ecosystem, avionics-pricing

• Cross-Country (8/10): This is what the Tailwind was built for. 155–180 KTAS on 8–9 gph gives it range and speed that rival a Mooney on half the fuel burn and a quarter of the purchase price. See cross-country.
• Local Fun Flying (8/10): Light, responsive, quick, and a conversation-starter on any ramp. Owners love them.
• Business Travel (5/10): Fast enough, but two seats, no IFR in most builds, and a cramped cabin with limited baggage limit its usefulness for real business missions.
• Backcountry (3/10): Not intended for rough strips — hard tailwheel, narrow gear, limited prop clearance, and high approach speed make it a poor bush plane.
• Surveying (3/10): Visibility is only fair for a high-wing (small windows, thick struts), and the airplane is too fast for low slow orbits.
• Flight Training (2/10): Single-seat-wide cabin, taildragger, hot approach, experimental — unsuitable for primary training.
• Cargo Hauling (2/10): Useful load around 550 lbs minus fuel leaves very little payload.
• Aerobatics (2/10): Not stressed for aerobatics. Wittman intended it as a high-speed cruiser.

As a plans-built experimental, the Tailwind has no "factory" panel — every airplane is unique. Typical tiers:

• Steam-gauge VFR ($3k–$8k): Uncertified altimeter, ASI, VSI, TC, compass, handheld comm, maybe a portable GPS. Common on older builds.
• Mid-tier EFIS ($8k–$18k): Single Dynon D10A/D100, GRT Mini, or Garmin G5 experimental, plus a single comm radio and Mode C transponder. Most flying Tailwinds sit here.
• Modern glass ($18k–$35k): Dynon SkyView HDX or Garmin G3X Touch 7", GTR 200 comm, GTX 45R transponder with ADS-B, autopilot servos. Usually seen in freshly rebuilt W-10s with O-320s.

The cabin is small — panel real estate is limited to roughly a 6x10" usable area, which forces difficult choices. See avionics-pricing for experimental-tier pricing.

STCs don't apply to experimental aircraft, but the Tailwind community has a rich culture of builder modifications:

• Callbie metal wing conversion: Replaces the wood wing with an all-aluminum structure. Raises gross weight, simplifies inspection, and eliminates wood-rot concerns. Plans/info sold alongside the Wittman plans.
• Jim Clement prefab parts: The late Jim Clement produced welded fuselage kits, wing kits, and pre-fabbed components that shortcut years off a scratch build. His parts still circulate on the used market.
• O-320 upgrade (most common): Builders routinely install 150–160 hp Lycoming O-320s in place of the original 85–108 hp Continentals, netting 15–25 kt in cruise and dramatic climb improvements.
• Composite cowl and wheel pants: Custom-molded cowlings and tight wheel pants recover 8–15 kt vs original designs.
• Bubble canopy mods: Some builders have replaced the standard windshield/door arrangement with bubble canopies for visibility and drag reduction.

As an experimental, the builder (as Repairman Certificate holder) or any A&P can sign off the annual condition inspection. In practice:

• Parts availability: Fair. Aircraft Spruce stocks drawings, hardware, spruce, fabric, and engine mount steel. Wittman-specific parts (fairings, cowlings, fittings) are builder-fabricated or sourced from community members. Jim Clement's parts still trade on TailwindForum.
• Mechanic familiarity: Specialist. Most A&Ps can handle the Lycoming engine, but the wood wing, fabric work, and Wittman-specific airframe details require an IA or EAA tech counselor familiar with the type. Owner-builders generally handle their own annuals.
• Annual condition inspection cost: $500–$1,500 if owner-performed, $1,500–$3,000 if shop-performed.
• Typical annual cost (fuel, oil, insurance, hangar, inspection, reserves): $4,000–$6,000 per year for a lightly-flown hobby airplane. Fuel burn is low enough that even 100 hrs/year at $6/gal avgas only runs ~$5,100 in fuel.
• Expensive items: Wing recover ($8k–$15k), full fabric strip and recover ($12k–$20k), engine overhaul ($18k–$25k), Wittman gear replacement ($2k–$4k).

See maintenance-ecosystem for general experimental maintenance context.

Community support is excellent: the TailwindForum on groups.io remains active, the EAA Type Club resources are available, and builder networks extend to pre-fabbed parts sources and veteran Tailwind mentors at most EAA chapters.

Tailwind pricing is driven almost entirely by build quality, engine time, and avionics — the "brand" adds little beyond a modest premium for airplanes with well-known builder pedigrees. Typical 2026 market:

• Project / disassembled / needs recover: $4,000–$12,000
• Flying W-8 with small Continental, steam gauges, old fabric: $15,000–$22,000
• Well-built W-10, O-320, mid-time engine, mid-tier EFIS, good fabric: $25,000–$35,000
• Show-quality W-10 with fresh O-320, modern Dynon/Garmin glass, new fabric, composite prop: $38,000–$55,000

Engine time follows standard experimental rules: a run-out O-320 knocks $10k–$15k off the top, and a fresh overhaul ($20k–$25k) is rarely fully recovered in resale. Fabric in the last 5 years of its life should discount the airframe by the cost of a recover ($8k–$15k). See valuation-methodology for general experimental valuation principles.

Plans from Aircraft Spruce (exclusive distributor since January 1996) currently run about $195. A scratch build from plans typically totals $35k–$60k in materials, engine, and avionics depending on choices, spread over 3–7 years.

As an experimental, the Tailwind has no FAA ADs — but it has well-documented failure patterns the community tracks:

• Wood wing spar rot: The single biggest pre-buy red flag. Moisture ingress at the fabric/wood interface, hangar rash, and leaky roofs can rot Sitka spruce spars invisibly under fabric. Borescope inspection through wing inspection covers is mandatory on pre-buy.
• Fabric condition: Ceconite/Poly-Fiber has a practical life of 20–25 years. Many flying Tailwinds are on their second or third recover.
• Wittman tapered-rod gear cracks: The spring-steel main gear can develop cracks at the fuselage attach points, particularly on airplanes that have seen hard landings. Annual dye-penetrant inspection is standard practice.
• Engine mount cracks: Welded-tube engine mounts on O-320-powered airplanes with aggressive props can crack at tube intersections; inspect annually.
• Builder quality variance: This is the overwhelming issue. Two Tailwinds built from identical plans can differ by 20 knots in cruise and 200 lbs in empty weight. A professional pre-buy by someone familiar with the design is essential.

Insurance for a Tailwind is firmly in experimental-taildragger territory:

• Hull premium: Roughly 3–5% of insured value, so a $25,000 airframe runs $900–$1,500/year for hull, plus $400–$600 for liability.
• Typical annual all-in: $1,200–$1,800 for a qualified pilot.
• Underwriting requirements: Most carriers (Avemco, BWI, USAIG's experimental desk, SkyWatch) require at minimum 200 total hours, 25 hours tailwheel, and 5–10 hours of dual in make/model or similar high-performance taildragger. First-time builders without tailwheel time face difficulty placing coverage at any price.
• Low-time transition pilots may be quoted dual-requirement endorsements of 15–25 hours before solo.
• Claims history: Landing accidents (ground loops, runway excursions) dominate Tailwind claims — the narrow gear and fast approach speed are unforgiving.

See insurance-underwriting for general experimental insurance context.