BG RCF IRY/IR-20 Coaches - Swarna Shatabdi --- IRY coach with IR-20 bogies was a new generation coach designed for speed potential of 160 kmph. These coaches fitted with IR20 bogies are based on the designs of Eurofima coach or European Standard Coach commissioned by the European Company for the Financing of Railroad Rolling Stock. Coaches on this design were being manufactured by RCF in small numbers and were introduced in regular passenger service as the NDLS-ASR Swarna Shatabdi. Specific modifications in these IRY/IR20 coaches include ribbed or corrugated shell design for strength, improvised helical flexi-coil spring for better ride quality, larger windows, noise reduction, improvised air-conditioning system and most recent additions are the bio-toilets. These coaches are not fitted with slack adjusters. The brake power of IRY coaches is much higher than the brake power of ICF type coaches. The bogie and body are connected by means of four high tensile M36 bolts tightly torqued to 50 kgm. These coaches are vestibuled & non self-generating i.e. they need EOG to get power. Type - BLRZ.