▁o ars ▁with ▁carbon ▁fi ber ▁in ▁an ▁attempt ▁to ▁go ▁faster . ▁When ▁they ▁were ▁not ▁selected ▁for ▁the ▁team , ▁they ▁founded ▁the ▁company ▁and ▁started ▁s elling ▁carbon ▁fi ber ▁o ars . ▁Their ▁first ▁office ▁was ▁in ▁the ▁back ▁of ▁a ▁bread ▁tr uck ▁until ▁they ▁bought ▁a ▁farm ▁in ▁Morris ville , ▁Verm ont , ▁United ▁States . ▁ ▁O ars ▁ ▁Dre iss ig acker ▁o ars ▁were ▁well ▁received ▁by ▁the ▁row ing ▁community ▁and ▁quickly ▁established ▁themselves ▁as ▁one ▁of ▁the ▁major ▁players ▁in ▁the ▁market . ▁In ▁ 1 9 9 1 , ▁the ▁company ▁came ▁out ▁with ▁asym met rical ▁" h atch et " ▁o ar ▁bl ades . ▁These ▁improved ▁a ▁team ' s ▁performance ▁by ▁ 1 ▁or ▁ 2 % ▁and ▁became ▁popular ▁so ▁quickly ▁that ▁by ▁ 1 9 9 2 ▁most ▁of ▁the ▁Olympic ▁cre ws ▁were ▁using ▁them . ▁ ▁Many ▁el ite ▁row ers ▁use ▁Con cept 2 ▁o ars , ▁and ▁along ▁with ▁Cro ker ▁o ars ▁they ▁make ▁up ▁the ▁majority ▁of ▁o ars ▁used ▁in ▁international ▁competition . ▁ ▁Ind oor ▁ro wer ▁( erg ) ▁▁ ▁In ▁ 1 9 8 1 , ▁the ▁brothers ▁had ▁the ▁idea ▁of ▁making ▁an ▁ind oor ▁row ing ▁machine ▁( the ▁Model ▁A ) ▁made ▁mainly ▁from ▁b icy cle ▁parts . ▁It ▁had ▁a ▁moving ▁seat ▁and ▁a ▁fly w heel ▁which ▁used ▁air ▁for ▁resistance . ▁At ▁the ▁time ▁the ▁ind oor