Technical information
Seats
Engine
Horsepower
Engine Mount
Gear Configuration
G Loading
Roll Rate
Typical Cost Including Build
*Typical Cost Incl. engine, avionics and propeller, see "PRICING" for more details.
Typical Build Time
Overall Length
Height
Wingspan
Internal Cabin Width
Gross Weight
Empty Weight
Typical Useful Load
-Max Fuel Load
-Useful Load Max Fuel
2
Lycoming / UL Power
180 hp / 200 hp / 210 hp
Dynafocal / Conical
Tail Wheel / Nose Wheel
+ 6.0, - 4.0
110 deg/sec
US$92,000 / ZAR1,300,000
550 hours
22 ft 6 in / 6.30 m
6 ft 2 in / 1.9 m
26 ft 2 in / 8.00 m
47.2 in / 1,193 mm
1
2,138 lbs / 970 kg
1,213 lbs / 550 kg
925 lbs / 420 kg
388 lbs / 176 kg
538 lbs / 244kg
85 kts
106 kts
115 kts
120 kts
136 kts
155 kts - 55% Cruise
160 kts
176 kts
180 kts
6.16 USG/hr - 23.3 liters/hr
5.10 USG/hr - 19.3 liters/hr
4.76 USG/hr - 18.0 liters/hr
5.46 USG/hr - 20.7 liters/hr
6.87 USG/hr - 26.0 liters/hr
8.61 USG/hr - 32.6 liters/hr
9.80 USG/hr - 37.1 liters/hr
10.38 USG/hr - 39.3 liters/hr
11.15 USG/hr - 42.2 liters/hr
Fuel Capacity
Fuel Consumption ( 55% Cruise, typ)
Fuel Type
Top Speed (typ)
Cruise Speed - Sport (typ 75%+ Power)
Cruise Speed - Economy (typ 55% Power)
Stall Speed
Take Off Ground Roll
Landing Distance
Rate of Climb
Max Operating Altitude
Range (Incl. Reserve, Taxi, Takeoff)
Endurance (Incl. Reserve, Taxi, Takeoff )
63 USG / 240 liters
8.5 USG/hr / 32.17 liters/hr
AVGAS / MOGAS
184 kts / 211 mph / 340 km/h
175 kts / 201 mph / 323 km/h
155 kts / 178 mph / 287 km/h
52 kts / 60 mph / 96 km/h
630ft / 192m
656ft / 200m
1,540 ft/min / 7.82 m/s
25,500 ft / 6,858 m
1,137 miles / 1,850 km
6:38 Hours
Download Additional Technical Information
Compare to Other Aircraft
Download Build Manuals
The X350 Gen II is a two seat, cross-country sport aircraft, with a limit load factor of plus 6.0 and minus 4.0g’s.
The wings feature a carbon fiber structure tested to an ultimate load factor of 12.0 g’s. The Gen II’s wing tanks have a total fuel capacity of 63 US gallons, giving a range of 1,000 nautical miles and an endurance of over 6 hours.
The aircraft also has one of the widest interiors on the market today, featuring leather interior (Optional) and plenty of baggage room making the Gen II perfect for comfortable cross-country trips.
Typical Useful Load - 925lbs / 420kg | 175kts | Range - 1,137miles / 1,830km
BUILD & MANUAL
The X350 kit can be completed in +-500 hours depending on your current skill set, when you receive your kit all structural parts and large surfaces will be completed. The kit ships with a base coat already sprayed to insure product quality, and ultimately the finished aircraft quality. The kit ships with 90% built Wings, Horizontal Stab, Rudder, Flaps, Ailerons, Elevators and Fuselage. Within a short time your aircraft will be ready for motor installation.
Building any kit aircraft is complicated, so it's important to have proper literature and illustrations to carry across what is to be built and completed and in what order. This makes a complicated project less complicated and understandable, thus making the "build" easy and faster. It was therefor essential for us to meet this criteria and properly illustrate to the builder so to have the builder be well informed and to also get across why a certain technique is used and how to use the techniques correctly.
Want to know more about composite? Check out the X350 Build Manual Chapter 1 - Introduction, to find out more about the materials used in the Gen II.
Available CAD Drawings
All assemblies in the aircraft can be reproduced by the builder using provided CAD drawings should it be required.
Color Illustrated Exploded Views
The build manual features color "exploded" views of all assemblies located in the Gen II.
Few Composite Layups
No need to worry about extensive layups, quick, simple, clean.
Pre-Primed
Primed and ready to go, all composite parts is pre primed so to minimize body work done by the builder, saving crucial time and funds.
Build at Home, Trailer to Hangar
Build your Gen II in your garage, when completed, trailer your aircraft to your hangar and finish her off.
Build Assist Program
Customizable builder assist at your facility. First to build in your region? We'll cover half the builder assistance costs!
Download a sample build manual.
Download Build Manuals
The X350 has been designed with the pilot in mind, sounds cliché right? Well its true, from small things such as wheel spats that have access to inflate the tires, stowage space in the cockpit to keep all items tidy on a busy flight, and various pilot and passenger safety elements. All these features result from the X350 aircraft design, while at the same time allowing a build time of approximately 500 hrs (can built in a two car garage) and meets the FAA 51% rule.
Open Canopy
Close Canopy
Key Design Features:
Passive Safety Elements | Computer Aided Finite Element Analysis | Built and Tested to Certified Aircraft Standards (FAR 23).
All Composite Airframe
Composite carbon fiber construction, vacuum bagged for lightness, then post cured for stiffness and strength. Carbon fiber main spars and spar-box for extreme G-loading conditions.
Corrosion Resistance
Composites do not corrode. Any aircraft owner close to the coast will caution you to the horrors of corrosion on metal aircraft and metal parts, the X350 has no such issues as 95% of the aircraft is built using composite.
Large Aluminum Avionics Panel
The large avionics panel supports up to 11" EFIS screens and a traditional radio stack.
Adjustable rudder pedals
Adjust your rudder pedal independently for maximum comfort.
Independently Adjustable Seats
Adjustable semi-reclined seats, offering a wider range of comfort.
Large Canopy
The large acrylic canopy allows for spectacular views from within the aircraft throughout your journey. The large canopy also has a unique rearward tilt opening mechanism to allow for easy ingress or egress.
Canopy Air System
The canopy has fresh air integrated into its frame so to allow hot or cool air to the canopy glass and crew, perfect for those hot, or cool days.
Engine Cooling Plenum
No complicated air baffling required. The plenum allows for easy access to the spark-plugs and keeps the engine at optimum operational temperature.
Large Storage Bay
The two seats fold forward so to easily load up to two golf bags, your fishing rods and camping equipment all with ease.
Long Range Fuel Tanks
The X350 Gen II sports two large wing tanks with a combined 63USG / 240 liters worth of fuel and with a range of 1,180 miles / 1,900 km or fuel what you need and increase your useful load more,
500 Hours Build Time
The X350 kit can be completed in +-500 hours depending on your current skill set, when you receive your kit all structural parts and large surfaces will be completed, the kit ships with a base coat already sprayed to insure product quality and ultimately the finished aircrafts quality.
Trailer-able Within Minutes
Easily removable horizontal stabilizer, and wings. Have your aircraft ready to be trailered or stored within 15 minutes.
Cockpit Stowing Space
Over 200l worth of stowage space, space for books, iPads, cellphones, pens, keys, and anything else you can fit, finally cleaning up the copilots seat or lap from clutter.
Tri-Gear or Tail Dragger
Optional
Internally Balanced
All control surfaces are internally balanced, leaving no exposed elevator leading edges vulnerable to small stone damage and paint chips.
Rear Windows
Optional rear windows for increased visibility.
No Rivets
Smooth skin for pearlescent paint or vinyl wrap to express your artistic side or advertise your company.
Customization
Few aircraft can be as easily customized as the Gen II, with many options ranging from landing lights, seat changes, full interior modifications, cowl modifications. Factory support is available for these types of changes, so your X350 is built just as you want it.
Repairable
Structures are easily repaired; composite has a straightforward procedure to
repair almost any and all damage quickly, easily and safely. Factory support is available for replacement of large structural parts.
Wide Cockpit
One of the widest 2 place aircraft cockpits available on the market today.
Internal Cabin Width - 47.2 in / 1,200 mm
Wide CG Range
A wide center of gravity range (9.1" to 17.6") means easier loading for those long trips and offers the builder more latitude in engine and propeller weights.
Custom Engine Support
As engine technology evolve we constantly see new engines come to the market. Whisper and our design team are dedicated to assist a builder and offers full factory support should the builder be willing to install a new engine into their X350 Gen II.
Whisper Aircraft is committed to safety, it is for this reason that we design, build and test to high standards, from the type of fuel senders we use to the type of composites and resin system.
Unfortunately, not all accidents can be avoided. Passive Safety features help minimize the probability and degree of injuries.
Passive safety elements include:
Structural integrity of the cabin under crash-loads | Effective occupant restraint | Unobstructed Head Strike Zones | Stainless Steel Braided Fuel Lines
EVERYDAY SAFETY
The best accident protection is to avoid them in the first place.
Very High Ultimate Wing and Airframe Strength
The Gen II wings and empennage have been tested to FAR 23 (Aerobatics) standards. The Gen II have a ultimate G loading of 12 G's and a limit load of 6G's.
Magnetic Field Fuel Senders
CiES Fuel Level Senders, Only the best in fuel sensing technology, know exactly what your fuel level is accurately.
Lightning Strike Protection - Optional
The Gen II has a optional lightning protection layer to aid lightning to pass through the aircraft and continue to the ground.
AN Hardware
The Gen II only uses the best quality hardware throughout the aircraft. Why settle for something else only to save a few bucks?
Effortless Inspection
Easily inspect all major control assemblies without opening any covers.
Designed, Tested
From full 3D CAD modeling, FEA testing on structural components, and physical testing; all conducted under strict guidance of FAR 23.
BAD LANDINGS
Survivable accidents should be exactly that – survived.
Ballistic Chute Ready
Stainless Steel Braided Fuel Lines
Whisper takes special measures to minimize the probability of post-crash fires. Aluminum fuel lines typically used in many other aircraft, rupture easily in a crash when supporting structures are deformed. To help prevent this, we use tough and flexible stainless steel braided high-pressure fuel lines that move with the deforming structure and have a vastly superior strength and rupture resistance.
Fire Retardant Cowling
Increased protection for an unexpected engine fire.
Robust Gear
Landing Gear has been designed and drop tested according to strict FAR 23.725 standards.
© D Michie 2019
*Picture illustrates a standard quick build kit, note each kit differ slightly due to customer features and requests.
Typical Cost Including Build includes:
Quick Built Kit, Engine, Basic EFIS Avionics System, Fire Wall Forward Systems, Fuel Systems, Ground Adjustable Propeller and Basic Paint.
!
COMPARE
Comparing aircraft is a crucial step, before purchasing your dream aircraft, this is why we present the comparisons here, for your convenience.
Shown aircraft is the most popular aircraft from the United States, Europe and South Africa, similarly they fall into the same price category and for the most part have similar performance. All these aircraft is also presented as kits.
While comparing the various aircraft keep what has been learned about the X350 Gen II in mind.
General X350 Gen II
Seats 2
Engine Lycoming
Horsepower 180 hp
Typical Cost Including Build $92,000+ / R1,300,000+
Typical Build Time 550 hrs
Wing Loading 17.50 lb/sq ft
Power Loading 11.88 lb/hp
G Loading +6.0, -4.0 @ Gross
Tail Dragger Option Yes
Construction Composite
Dimensions
Overall Length 22 ft 6 in / 6.30 m
Height 6 ft 2 in / 1.9 m
Wingspan 26 ft 2 in / 8.00 m
Internal Cabin Width 47.2 in / 1,200 mm
Weight
Gross Weight 2,138 lbs / 970 kg
Empty Weight 1,213 lbs / 550 kg
Useful Load 926 lbs / 420 kg
-Max Fuel Load 388 lbs / 176 kg
-Useful Load Max Fuel 538 lbs / 244 kg
Fuel
Fuel Capacity 63 USG / 240 liters
Fuel Consumption @ 55% Cruise 8.5USG /hr, 32.17 L/hr
Fuel Type AVGAS
Performance
Cruise speed 75% Power 175 kts / 323 km/h @1500ft
Cruise speed 55% Power 155 kts / 287 km/h @1500ft
Stall Speed 52 kts / 96 km/h
Take Off Ground Roll 630ft / 192 m
Landing Distance 656 ft / 200m
Rate of Climb 1,540 ft/min / 7.82 m/s
Max Operating Altitude * 25,500 ft / 6,858 m
Range (with reserves) 1,137 miles / 1,830 km @55%
RV-7
2
Lycoming
180 hp
$85,000+ / R1,709,000+
1200 hrs
14.8 lb/sq ft
10.00 lb/hp
+6.0, -4.0
Yes
Aluminum
20 ft 4 in / 6.22 m
7 ft 10 in / 2.16 m
25 ft / 7.62 m
43 in / 1,092 mm
1,800 lbs / 816 kg
1130 lbs / 512 kg
670lbs / 304 kg
253 lbs / 115 kg
417 lbs / 189 kg
42 USG / 159 liters
AVGAS
171 kts / 317 km/h @8000ft
154 kts / 285 km/h
50 kts / 93 km/h
575 ft / 175 m
500 ft / 152 m
1,600 ft/min / 8.13 m/s
19,500 ft / 5,944 m
940 miles / 1,513 km
RV-14
2
Lycoming
210 hp
$98,000+ / R1,840,000+
1200 hrs
16.25 lb/sq ft
9.76 lb/hp
+6.0, - 3.0 @ 1900lbs
Yes
Aluminum
21 ft 1 in / 6.43 m
8 ft 2 in / 2.5 m
27 ft / 8.00 m
46.0 in / 1,168 mm
2050 lbs / 930 kg
1,240 lbs / 563 kg
810 lbs / 367 kg
300 lbs / 136 kg
510 lbs / 231 kg
50 USG / 189 liters
AVGAS
168 kts / 311 km/h @8000ft
147 kts / 272 km/h
51 kts / 94km/h
630 ft / 192 m
715 ft / 217 m
1,500 ft/min / 7.62 m/s
18,000+ ft / 5,486 m
1,080 miles / 1,738 km
Lancair Barracuda
2
Continental
310 hp
$230,000+ / R3,500,000+
1120 hrs
23 lb/sq ft
7.0 lb/hp
+4.4, -2.2 (utility)
No
Composite
22 ft / 6.70 m
-
25 ft 5 in / 7.77 m
43.5 in / 1,105 mm
2,200 lbs / 998 kg
1,450 lbs / 658 kg
750 lbs / 340 kg
360 lbs / 163 kg
390 lbs / 177 kg
65 USG / 246 liters
14 USG/hr / 52 L/hr
AVGAS
223 kts / 413 km/h @12,000ft
-
52 kts / 96 km/h
800 ft / 244 m
900 ft / 274 m
2,700 ft/min / 13.7 m/s -solo
-
1,093 miles / 1,759 km
Sling 2
2
Rotax
115 hp
$109,000+ / R1200,000+
850 hrs
-
-
+4.4, -2.2 (utility)
Yes
Aluminum
21 ft 10 in / 6.67 m
8 ft / 2.45m
30 ft 1 in / 9.17 m
43.8 in / 1,11 mm
1,543 lbs / 700 kg
847 lbs / 384 kg
697 lbs / 316 kg
238 lbs / 108 kg
459 lbs / 208 kg
39.6 USG / 150 liters
3.8 USG/hr, 14.38 L/hr
MOGAS
130 kts / 240 km/h
-
46 kts / 85 km/h
460 ft / 140 m
295 ft / 90 m
900 ft/min / 4.57 m/s
16,000 ft / 4,876 m
805 miles / 1,296 km @75%
* Above specifications were current when publishing this website, for updated specifications visit above compared aircraft respective websites to verify information. This comparison is shown only for convenience.
* Max Operating Altitude is Max Theoretical Operating Altitude.
Dynamic WT9
2
Rotax
100 hp
$131,506+ / R1,900,000+
850 hrs
-
-
+4.4, -2.2
No
Composite
21 ft / 6.40 m
6.56 ft / 2.00 m
29 ft 52 in / 9.00 m
45.3 in / 1,15 mm
1,323 lbs / 600 kg
595 lbs / 270 kg
728 lbs / 330 kg
198 lbs / 90 kg
529 lbs / 240 kg
33 USG / 125 liters
4.54 USG/hr, 17.2 L/hr
MOGAS
130 kts / 240 km/h
100 kts / 185 km/h
42 kts / 78 km/h
-
-
1190 ft/min / 6.05 m/s
-
767 miles / 1,234km
PRICING
The pricing shown is intended as a budgeting aid only and is not a guarantee of pricing or availability. Prices are based on the best available information however are subject to change without notice.
Have a friend that might join you in building their own X350? Special pricing for United States and International orders for 2 or more kits.
United States
South Africa
NOTE: Included means items are rolled up in the cost at bottom of the pricing column, however can be deducted, customized or purchased later. Prices may be outdated, request a quote for updated prices.
Prices
$49,000
$2,786
$2,434
$2,650
+$12,050
$7,500
$27,600
+ $4,400
+ $5,100
$2,917
US$91,970
INCLUDED
INCLUDED
INCLUDED
INCLUDED
OPTIONAL
INCLUDED
INCLUDED
OPTIONAL
OPTIONAL
OPTIONAL
Kit
Standard Whisper X350 Gen II Fast Build Composite Kit - Nose Gear
Systems
Fuel System - Auxiliary Fuel Pump, Selector Valve, Filters, Pipes, Firesleaves, Fuel Lvl, etc.
Firewall Forward Kit - for Lycoming O-360 (Exhaust, Gascolator, Solenoids, etc.)
2 Blade Whirlwind GA200L 72" Ground Adjustable Propeller
Above includes - Voltage Regulator, Concord Platinum Battery, Pitot (un-heated), Boost Pump, Fuel Selector Valve, Aero-Classics Oil Cooler, Master Solenoid, Starter Solenoid, High Pressure Gasolator, Weldon Fuel Pump, CiES Magnetic Fuel Level Senders
Avionics
Dynon Avionics - 2 x SV-HDX1100/A 10” SkyView HDX Displays Monitoring of EGT, CHT, Oil Temp, Oil Pressure, RPM, Fuel Levels, Fuel Flow. SkyView VHF Radio / Intercom & VHF Antenna, SkyView Mode S Class 2 Transponder, Aircraft Grade Tefzel Wiring, TwoPlace Stereo Intercom, Circuit Breakers and 2 axis Auto Pilot.
MGL Avionics - 2x 10" MGL Explorer EFIS Main Flight Displays, EGT, CHT, Oil Temp, Oil Pressure, RPM, Fuel Levels, Fuel Flow, Circuit Breakers, MGL Digital VHF Radio / Intercom & VHF Antenna, Sandia STX 165R Remote Tansponder
Engines
Lycoming YIO-360-M1B - 180HP (Fixed Pitch or Constant Speed) Motor (Fuel Injected).
Lycoming YIO-360-A1B6 - 200HP (Fixed Pitch or Constant Speed) Motor (Fuel Injected).
Lycoming YIO-390-A3B6 - 210HP (Fixed Pitch or Constant Speed) Motor
Interior Options
Custom Italian Leather Interior: A full-leather interior and generously crafted seats (with Memory Foam).
Total
NOTE: Included means items are rolled up in the cost at bottom of the pricing column, however can be deducted, customized or purchased later. Prices may be outdated, request a quote for updated prices.
Prices
R470,000
+R350,000
R39,700
R43,800
R38,700
+R192,500
R135,000
R486,000
+ R70,000
- R286,000
R29,000
R19,200
ZAR1,261,400
INCLUDED
OPTIONAL
INCLUDED
INCLUDED
INCLUDED
OPTIONAL
INCLUDED
INCLUDED
OPTIONAL
OPTIONAL
INCLUDED
INCLUDED
Kit
Standard Whisper X350 Gen II Fast Build Composite Kit - Nose Gear
Complete My X350 Gen II for Me
Systems
Fuel System - Auxiliary Fuel Pump, Selector Valve, Filters, Pipes, Firesleaves, Fuel Lvl, etc.
Firewall Forward Kit - for Lycoming O-360 (Exhaust, Gascolator, Solenoids, etc.)
2 Blade Whirlwind GA200L 72" Ground Adjustable Propeller
Above includes - Voltage Regulator, Concord Platinum Battery, Pitot (un-heated), Boost Pump, Fuel Selector Valve, Aero-Classics Oil Cooler, Master Solenoid, Starter Solenoid, High Pressure Gasolator, Weldon Fuel Pump, CiES Magnetic Fuel Level Senders
Avionics
Dynon Avionics - 2 x SV-HDX1100/A 10” SkyView HDX Displays Monitoring of EGT, CHT, Oil Temp, Oil Pressure, RPM, Fuel Levels, Fuel Flow. SkyView VHF Radio / Intercom & VHF Antenna, SkyView Mode S Class 2 Transponder, Aircraft Grade Tefzel Wiring, TwoPlace Stereo Intercom, Circuit Breakers and 2 axis Auto Pilot.
MGL Avionics - 2x 10" MGL Explorer EFIS Main Flight Displays, EGT, CHT, Oil Temp, Oil Pressure, RPM, Fuel Levels, Fuel Flow, Circuit Breakers, MGL Digital VHF Radio / Intercom & VHF Antenna, Sandia STX 165R Remote Tansponder
Engines
Lycoming YIO-360-M1B - 180HP (Fixed Pitch or Constant Speed) Motor (Fuel Injected).
Lycoming YIO-360-A1B6 - 200HP (Fixed Pitch or Constant Speed) Motor (Fuel Injected).
Lycoming YIO-360 180HP Engine (Midlife) (Estimate)*
Interior Options
Custom Italian Leather Interior: A full-leather interior and generously crafted seats (with Memory Foam).
Paint and Consumables
3 Stage Baslac® Pearl base paint enhances the smooth flowing lines of which only a composite plane can benefit. (estimate)
Total
For a formal quote fill out the form below.
X350 Gen II is Personalized to Suit Your Taste
Range
Click on the little aircraft for more information.
Info
Aircraft Configuration: Maximum Take Off Weight, Including 45 Minute Reserve, Taxi and Takeoff Fuel.*
Click on a location on the map to set your departure airport, then click on the small aircraft to see the projected range, estimated time and speed.
x
*Distance and time indicated are for guidance only and should not be used for flight planning purposes. Air traffic, weather and other factors are not taken into consideration. Shown range estimates apply to standard equipped aircraft and can change without notice.
STAY CONNECTED WITH US
Subscribe to receive monthly newsletters.