Air Filter Sizing

K&N 33-2544   25,1 x 19,38 x 4,6 cm; 220 g

alejandro zapata gordillo wrote:

K&N 33-2544   25,1 x 19,38 x 4,6 cm; 220 g

Hi Alejandro,

Thank you for your response.

 # Is this a Rotax recommendation?

 # Your recommendation? If so please justify

FYI:   33-3544 compared with the BM-8006                  DIfference

Height  22 mm                                 37 mm                       15mm

Length 176 mm                               152 mm                      24mm

Width    89 mm                                92 mm                        03 mm

Hi Sean.

It came factory installed on my ULM Tecnam P92 ECHO S with Rotax912 ULS engine.

Installation Manual Chapter 72-60-00

Thank you for your reference. Unfortunatly this was all that came up:

"Minimum flow rate A minimum flow rate of 220 m³/h (288 yd³/h, 129 CFM) has to be warranted for all conditions. Pressure loss The pressure loss must not exceed 2 hPa. Choice of a suitable filter The following points should assist the aircraft manufacturer at the choice of a suitable filter: • 4 fold cotton fabric • Surface covered with metal screen • Total filter area at least 1400 cm² (217 in²) • Min. flow rate of 6.23 m³/min (480 yd³/h, 282 CFM), based on the surface area of filter material"

No mention of filter brand, part number. Nothing is the Spare Parts Manual.