| Ru BI | 39 | 42 | |
| 2015 | 2015 | ||
| In-Flight-Weight | kg | 125 - 200 | 140 - 235 |
| Main-Use | Tandem | Tandem | |
| Certifications | ; | ||
| Naked-Pilot | kg | 95 - 170 | 110 - 205 |
| Wing-Load | kg/m² | 3,2 - 5,1 | 3,3 - 5,5 |
| Wing-Weight | kg | 8,5 | 9,3 |
| Area | m² | 39,00 | 42,90 |
| Area proj | m² | 34,90 | 38,40 |
| Span | m | 14,52 | 15,23 |
| Span proj | m | 12,12 | 12,70 |
| Ratio | 5,40 | 5,40 | |
| Ratio proj | 4,20 | 4,20 | |
| Rows | |||
| Boxes | 37 | 37 | |
| Cells | 50 | 50 | |
| Closed Cells | 8 | 8 | |
| Lines Ø diam. | 1,7 mm; 1,1 mm | 1,7 mm; 1,1 mm | |
| Lines distance | m | 8,86 | 9,30 |
| Lines total | |||
| Flattening | % | 11 | 10 |
| Accelerated speed | |||
| Basic speed | |||
| Minimum speed | |||
| Best-Sink-Rate | |||
| Best-Glide-Ratio | |||
| GR/Fmax Estimations | |||
| Upper-Surface | Skytex 38 g/m² | Skytex 38 g/m² | |
| Under-Surface | Skytex 38 g/m² | Skytex 38 g/m² | |
| Lines type | Kevlar | Kevlar | |
| Risers | |||
| Accelerator | No | No | |
| Trims | 6 cm | No | |
| Ears | Yes | Yes | |
| B Lines | Yes | Yes |