Evektor Harmony LSA weight and balance and performance calculator
Calculate the weight and balance of the Evektor Harmony LSA online: enter people, baggage and fuel and get the takeoff mass, the CG and whether both are within the limits of the POH – plus the takeoff and landing distance for your airfield, temperature and wind. Free, no sign-up. The Evektor Harmony LSA is a model of the Evektor SportStar / Harmony; build years not on file.
* MTOW, sea level, 15 °C, no wind – BriefingPal result from the POH data
Calculate the Evektor Harmony LSA weight, CG and takeoff distance
Your own empty mass (weighing report, optional)
The POH has no standard empty moment for this model – enter the empty mass CG from your weighing report to get the CG.
Leave empty to use the typical POH empty mass. Your aircraft's weighing report is what counts.
Calculated on the BriefingPal server from the POH data. Nothing is stored, no cookie. Planning aid only – the POH/AFM and your weighing report are authoritative.
Evektor Harmony LSA key figures
| Maximum takeoff mass (MTOW) | 599 kg (1,320 lb) |
|---|---|
| Typical empty mass (POH sample) | 386 kg (850 lb) |
| Usable fuel | 31.2 US gal (118 L) |
| Total fuel capacity | 32 US gal (121 L) |
| Fuel type | AVGAS |
| Useful load with full fuel | 128 kg (283 lb) |
| Maximum baggage | 25 kg (55 lb) |
| Demonstrated crosswind | 15 kt |
| Best rate of climb speed Vy | 65 KIAS |
| Service ceiling | 16,532 ft |
| Built | – |
| Loading stations | front seats, baggage compartment, fuel |
Empty mass and useful load depend on your aircraft – its weighing report applies.
Evektor Harmony LSA takeoff and landing distance
BriefingPal result from the POH charts at MTOW, no wind, dry paved runway, normal procedure, default flap setting, without safety factor. Use the calculator above for your mass, airfield, temperature and wind.
| Conditions | Takeoff ground roll | Takeoff over 50 ft | Landing over 50 ft | Landing ground roll |
|---|---|---|---|---|
| Sea level, 15 °C | 210 m (690 ft) | 485 m (1,590 ft) | 395 m (1,290 ft) | 180 m (590 ft) |
| 5,000 ft, 25 °C (density altitude ≈ 7,300 ft) | 325 m (1,070 ft) | 750 m (2,460 ft) | – | – |
Hot and high, the Evektor Harmony LSA needs about 55 % more distance to clear 50 ft than at sea level. Calculate density altitude →
Evektor Harmony LSA climb and cruise
| Rate of climb at sea level | Time / fuel to 6,500 ft | Cruise TAS at 6,500 ft | Fuel flow |
|---|---|---|---|
| 880 fpm | 9 min / 1.1 US gal | 96 kt | 4.8 US gal/h (18 L/h) |
MTOW, ISA, default power setting of the POH cruise table (≈78 % power).
How to do the Evektor Harmony LSA weight and balance
- Enter the loadingWeights of pilot, passengers and baggage per station, fuel in litres or US gallons. Each station limit and the MTOW are checked.
- Use your own empty massOptional: enter empty mass and empty CG from the weighing report of your Evektor Harmony LSA. Without it the typical POH empty mass is used.
- Check CG and massThe traffic light shows whether the takeoff mass and the CG with and without fuel lie within the envelope of the POH.
- Takeoff and landingElevation, QNH, temperature, wind and runway give the takeoff and landing distance – compared with the runway length if you enter it.
Evektor Harmony LSA compared with the other Evektor SportStar / Harmony models
| Model | MTOW | Usable fuel | Takeoff over 50 ft* | Cruise TAS* |
|---|---|---|---|---|
| Evektor SportStar RTC | 600 kg | 31.2 US gal | 365 m | 93 kt |
| Evektor Harmony LSA | 599 kg | 31.2 US gal | 485 m | 96 kt |
* MTOW, sea level, 15 °C / 6,500 ft, ISA – BriefingPal result from the POH data.
Evektor Harmony LSA – frequently asked questions
What is the MTOW of the Evektor Harmony LSA?
The maximum takeoff mass of the Evektor Harmony LSA is 599 kg (1,320 lb) according to the POH.
How much usable fuel does the Evektor Harmony LSA carry?
31.2 US gal (118 L) usable (total capacity 32 US gal (121 L)). With the typical POH empty mass and full fuel, about 128 kg (283 lb) remain for people and baggage.
How long is the takeoff distance of the Evektor Harmony LSA?
At MTOW, sea level, 15 °C and no wind the ground roll is about 210 m (690 ft) and the distance over 50 ft about 485 m (1,590 ft). At 5,000 ft and 25 °C it grows to about 750 m (2,460 ft). The calculator above gives the value for your conditions.
How do I calculate the CG of the Evektor Harmony LSA?
Multiply each mass by its arm, add up the moments and divide by the total mass – the calculator above does this with the stations of the Evektor Harmony LSA POH (front seats, baggage compartment, fuel) and checks the CG against the envelope.
How does the Evektor Harmony LSA differ from other Evektor SportStar / Harmony models?
BriefingPal has 2 Evektor SportStar / Harmony models on file. Compared with them the Evektor Harmony LSA has the lowest MTOW (599 kg (1,320 lb)), 31.2 US gal (118 L) usable fuel and a takeoff distance over 50 ft of 485 m (1,590 ft) at MTOW.
Is the Evektor Harmony LSA weight and balance calculator free?
Yes. The calculator on this page and the BriefingPal app are free and need no account. The app adds route planning, weather, NOTAM, fuel planning and a briefing PDF.
Data source
All figures come from the Pilot's Operating Handbook / Airplane Flight Manual of the Evektor Harmony LSA (weight and balance and performance sections) and are computed with the BriefingPal engine – the same calculation as in the app. Planning aid only; the original POH/AFM and the weighing report of your aircraft remain authoritative.
Other Evektor SportStar / Harmony models
Calculators
Open the Evektor Harmony LSA calculator
free · no sign-up · POH data