ile ver ▁legs ▁mounted ▁on ▁the ▁fus el age ▁at ▁the ▁base ▁of ▁the ▁wing ▁str uts ▁plus ▁a ▁sp atted , ▁ste er able ▁nose w heel . ▁ ▁The ▁main w he els ▁have ▁bra kes ▁operated ▁by ▁a ▁central ▁hand ▁control . ▁A ▁conventional ▁under car riage ▁is ▁an ▁option , ▁with ▁the ▁main w heel ▁legs ▁fus el age - mount ed ▁further ▁forward , ▁below ▁the ▁cabin ▁doors , ▁plus ▁a ▁carbon - and - ste el ▁tail w heel . ▁ ▁A ▁variety ▁of ▁engines ▁have ▁been ▁fitted . ▁ ▁Early ▁models ▁used ▁a ▁ 2 6   k W ▁( 3 5   hp ) ▁Rot ax ▁ 4 4 7 ▁or ▁J ab ir u , ▁or ▁a ▁( 3 7   k W ) ▁ 5 0   hp ▁Rot ax ▁ 5 0 3 . ▁ ▁The ▁Mark ▁ 3 ▁had ▁a ▁ 6 0   k W ▁( 8 0   hp ) ▁Rot ax ▁ 9 1 2 ▁U L ▁and ▁the ▁Mark ▁IV ▁offers ▁a ▁choice ▁between ▁this ▁engine , ▁the ▁u pr ated ▁ 7 3   k W ▁( 9 9   hp ) ▁Rot ax   9 1 2   U LS ▁or ▁a ▁ 7 5   k W ▁( 1 0 0   hp ) ▁E c of ly ▁M 1 6 0 , ▁first ▁used ▁in ▁production ▁F k 9 s ▁in ▁the ▁Sm art ▁variant . ▁ ▁The ▁design ▁is ▁an ▁accepted ▁Federal