bra kes . ▁This ▁last ▁feature ▁did ▁not ▁work ▁well ▁so ▁the ▁bra kes ▁were ▁replaced ▁by ▁a ▁conventional , ▁rect angular ▁rud der ; ▁this ▁was ▁further ▁modified ▁later ▁by ▁adding ▁a ▁tri angular ▁tip , ▁forming ▁a ▁bal anced ▁rud der . ▁At ▁the ▁same ▁time ▁a ▁fixed ▁fin ▁was ▁added . ▁ ▁The ▁S b . 1 ▁had ▁an ▁open ▁frame ▁fus el age . ▁A ▁beam ▁less ▁than ▁about ▁ ▁long ▁served ▁as ▁a ▁landing ▁sk id ▁and ▁supported ▁the ▁controls ▁and ▁the ▁pilot ' s ▁seat ▁in ▁front ▁of ▁a ▁square ▁cross - section ▁fair ing ▁which ▁conver ged ▁in ▁boat - tail ▁fashion ▁in ▁plan ▁and ▁elev ation ▁to ▁a ▁point ▁only ▁a ▁short ▁distance ▁a ft ▁of ▁the ▁sk id . ▁ ▁From ▁the ▁beam ▁a ▁pair ▁of ▁str uts ▁conver ged ▁above ▁the ▁wing , ▁the ▁rear ▁one ▁almost ▁vertical . ▁Two ▁pairs ▁of ▁steel ▁t ube ▁str uts , ▁attached ▁to ▁the ▁top ▁and ▁bottom ▁of ▁the ▁rear ▁u pr ight , ▁spread ▁out ▁into ▁V s ▁to ▁support ▁the ▁rect angular ▁plan ▁tail plane . ▁The ▁rest ▁of ▁the ▁structure ▁was ▁wire - b rac ed . ▁ ▁The ▁gl ider ▁had ▁a ▁wire - b rac ed , ▁wooden , ▁two ▁part , ▁three ▁sp ar ▁wing ▁with ▁the ▁first ▁sp ar ▁forming ▁the ▁leading ▁edge ▁and ▁the ▁second ▁the ▁axis ▁of ▁rotation . ▁ ▁The ▁wings ▁had ▁constant ▁ch ord ▁out ▁to ▁ang led ▁tips ▁and ▁a ▁thick ▁( 1 6