Bristell LSA-K-RG-915 weight and balance and performance calculator
Calculate the weight and balance of the Bristell LSA-K-RG-915 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 Bristell LSA-K-RG-915 is a model of the Bristell NG-5 / LSA; built 2024.
* MTOW, sea level, 15 °C, no wind – BriefingPal result from the POH data
Calculate the Bristell LSA-K-RG-915 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.
Bristell LSA-K-RG-915 key figures
| Maximum takeoff mass (MTOW) | 600 kg (1,323 lb) |
|---|---|
| Typical empty mass (POH sample) | 379 kg (836 lb) |
| Usable fuel | 31.4 US gal (119 L) |
| Total fuel capacity | 31.7 US gal (120 L) |
| Fuel type | AVGAS |
| Useful load with full fuel | 135 kg (299 lb) |
| Demonstrated crosswind | 12 kt |
| Best rate of climb speed Vy | 78 KIAS |
| Service ceiling | 18,000 ft |
| Built | 2024 |
| Loading stations | seat row 1, seat row 2, baggage area 1, baggage area 2, fuel |
Empty mass and useful load depend on your aircraft – its weighing report applies.
Bristell LSA-K-RG-915 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 | 140 m (460 ft) | 240 m (790 ft) | 470 m (1,540 ft) | 240 m (790 ft) |
| 5,000 ft, 25 °C (density altitude ≈ 7,300 ft) | 215 m (710 ft) | 375 m (1,230 ft) | – | – |
Hot and high, the Bristell LSA-K-RG-915 needs about 56 % more distance to clear 50 ft than at sea level. Calculate density altitude →
Bristell LSA-K-RG-915 climb and cruise
| Rate of climb at sea level | Time / fuel to 6,500 ft | Cruise TAS at 6,500 ft | Fuel flow |
|---|---|---|---|
| 1,520 fpm | 4 min / 0.8 US gal | 144 kt | 10.0 US gal/h (38 L/h) |
MTOW, ISA, default power setting of the POH cruise table (≈88 % power).
How to do the Bristell LSA-K-RG-915 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 Bristell LSA-K-RG-915. 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.
Bristell LSA-K-RG-915 compared with the other Bristell NG-5 / LSA models
| Model | MTOW | Usable fuel | Takeoff over 50 ft* | Cruise TAS* |
|---|---|---|---|---|
| Bristell NG-5 / LSA (912 ULS) | 599 kg | 31.4 US gal | 455 m | 95 kt |
| Bristell NG-5 (914 Turbo) | 599 kg | 30.9 US gal | 400 m | 92 kt |
| Bristell NG-5 / LSA-K-916 | 600 kg | 31.4 US gal | 275 m | 122 kt |
| Bristell LSA-K-RG-915 | 600 kg | 31.4 US gal | 240 m | 144 kt |
* MTOW, sea level, 15 °C / 6,500 ft, ISA – BriefingPal result from the POH data.
Bristell LSA-K-RG-915 – frequently asked questions
What is the MTOW of the Bristell LSA-K-RG-915?
The maximum takeoff mass of the Bristell LSA-K-RG-915 is 600 kg (1,323 lb) according to the POH.
How much usable fuel does the Bristell LSA-K-RG-915 carry?
31.4 US gal (119 L) usable (total capacity 31.7 US gal (120 L)). With the typical POH empty mass and full fuel, about 135 kg (299 lb) remain for people and baggage.
How long is the takeoff distance of the Bristell LSA-K-RG-915?
At MTOW, sea level, 15 °C and no wind the ground roll is about 140 m (460 ft) and the distance over 50 ft about 240 m (790 ft). At 5,000 ft and 25 °C it grows to about 375 m (1,230 ft). The calculator above gives the value for your conditions.
How do I calculate the CG of the Bristell LSA-K-RG-915?
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 Bristell LSA-K-RG-915 POH (seat row 1, seat row 2, baggage area 1, baggage area 2, fuel) and checks the CG against the envelope.
How does the Bristell LSA-K-RG-915 differ from other Bristell NG-5 / LSA models?
BriefingPal has 4 Bristell NG-5 / LSA models on file. Compared with them the Bristell LSA-K-RG-915 has the highest MTOW (600 kg (1,323 lb)), 31.4 US gal (119 L) usable fuel and a takeoff distance over 50 ft of 240 m (790 ft) at MTOW.
Is the Bristell LSA-K-RG-915 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 Bristell LSA-K-RG-915 (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 Bristell NG-5 / LSA models
Calculators
Open the Bristell LSA-K-RG-915 calculator
free · no sign-up · POH data