JMB VL3 vs Porto Aviation Risen SV 916

Side-by-side specs, range, and operating costs.

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Dimensions & configuration

Representative planforms, drawn to shared scale.

JMB VL3
28 ft × 20 ft ⭥ 7 ft
1× Piston Retractable Unpressurized
Porto Aviation Risen SV 916
27 ft × 22 ft ⭥ 8 ft
1× Piston Retractable Unpressurized

Flight Profile

Service ceiling, range, and climb rate.

Tap legend to isolate

Arc represents the climb-cruise-descent profile based on published service ceiling and range. Climb rate annotated on ascent. FL180 (18,000 ft) shown for reference.

Mission Performance

Stall, approach, cruise, range, ceiling and climb: best values are at the top.

Mission performance specifications
Specification JMB VL3Porto Aviation Risen SV 916
Stall speed 44 kt—
Approach speed 60 kt55 kt
Cruise speed 199 kt215 kt
Range 810 nm907 nm
Service ceiling 18000 ft23000 ft
Rate of climb 2000 fpm2200 fpm
Fuel burn 9.0 gph6.9 gph

Each axis is scaled independently across the compared aircraft and printed in its own units; every vertex sits at the published figure. Higher is better on all axes: Stall, Approach and Fuel Burn are inverted (lower = higher). A missing figure breaks the line at that axis.

Fuel Burn & Range

Range, endurance, and what the fuel costs by the hour.

JMB VL3 Mogas
9.0 gph
Baseline
810 nm range 22.1 nm/gal 37 gal usable $45 fuel/hr 4h 06m endurance
JMB VL3: 9.0 gph at cruise, 810 nautical mile published range, 4 hour 6 minute endurance, 22.1 nautical miles per gallon.
Porto Aviation Risen SV 916 Mogas
6.9 gph
Baseline
907 nm range 31.2 nm/gal 31 gal usable $34 fuel/hr 4h 29m endurance
Porto Aviation Risen SV 916: 6.9 gph at cruise, 907 nautical mile published range, 4 hour 29 minute endurance, 31.2 nautical miles per gallon.
Mogas range each cell = 1 hr of cruise · width scales with speed

Bars show published still-air range: select a cell to view cruise-hours and fuel usage. Endurance is full tank at the displayed cruise burn rate; the extra is reserve and economy margin. Estimates only. Always verify against the POH.

Runway Performance

Density altitude adjusted estimates

Outside Air Temp
0°F57°F115°F
Field Elevation
SL4,0008,000 ft

Takeoff over 50 ft obstacle

Landing ground roll

Density Altitude

Monte cristo

Base distance DA penalty
Scale: 6,000 ft

FAA 10%/1,000 ft DA rule of thumb (FAA-H-8083-25B). Turboprops and jets are less sensitive in practice. Always verify against the POH.

Estimated Operating Costs

Hourly direct and annual fixed costs

Scale:
JMB VL3 Mogas
$70 /hr
Baseline
JMB VL3: $70 per flight hour — fuel $45, maintenance and reserve $25.
Porto Aviation Risen SV 916 Mogas
$62 /hr
Baseline
Porto Aviation Risen SV 916: $62 per flight hour — fuel $34, maintenance and reserve $28.
JMB VL3 Piston
$15,000 /yr Baseline
JMB VL3: $15,000 per year — insurance $6,000, hangar $7,200, annual inspection $1,800.
Porto Aviation Risen SV 916 Piston
$11,033 /yr Baseline
Porto Aviation Risen SV 916: $11,033 per year — insurance $4,000, hangar $4,533, annual inspection $2,500.

Estimates only. Hourly direct operating cost, based on fuel price and reserves; Annual fixed costs (insurance, hangar, and inspection). Costs vary by location, pilot profile, and market conditions. See individual aircraft pages for source notes.

Capability & limits

Payload vs useful load limit

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JMB VL3 Piston
2 / 2 seats 37 gal / 37 gal fuel 296 lbs wet payload 518 lbs useful 1,323 lbs MTOW
Porto Aviation Risen SV 916 Piston
2 / 2 seats 31 gal / 31 gal fuel 420 lbs wet payload 606 lbs useful 1,378 lbs MTOW

Shows selected occupants against full fuel, within the aircraft's useful-load limit. Fuel weight at 6.7 lb/gal jet-A, 6.0 lb/gal avgas; pax and luggage are 190 + 30 . Change payload weights in global settings.

Payload-Range Map

Origin: · two fingers to move map

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