▁Mans . ▁ ▁In ▁addition ▁to ▁these ▁production ▁cars ▁built ▁by ▁Bent ley ▁Mot ors , ▁B irk in ▁put ▁together ▁a ▁racing ▁team ▁of ▁four ▁rem od elled ▁pro tot ypes ▁plus ▁a ▁spare ▁No . 1 : ▁a ▁track ▁car ▁for ▁Brook lands , ▁but ▁with ▁head light s ▁and ▁mud gu ards ▁No . 2 , ▁ 3 ▁and ▁ 4 : ▁road ▁registered ▁( No . 2 ▁- ▁G Y 3 9 0 4 ; ▁No . 3 ▁- ▁G Y 3 9 0 5 ) ▁No . 5 : ▁a ▁fifth ▁car , ▁registered ▁for ▁the ▁road , ▁assemble d ▁from ▁spare ▁parts ▁ ▁Racing ▁While ▁the ▁naturally ▁asp ir ated ▁ 4 ½ ▁Lit re ▁was ▁noted ▁for ▁its ▁good ▁reli ability , ▁the ▁super charg ed ▁models ▁were ▁generally ▁not . ▁▁ 1 9 2 9 ▁B irk in ▁entered ▁No . 1 ▁in ▁a ▁ ▁end urance ▁race ▁at ▁Brook lands ▁in ▁ 1 9 2 9 . ▁However , ▁during ▁the ▁race ▁its ▁light weight ▁fabric ▁two - se ater ▁body ▁caught ▁fire ▁due ▁to ▁a ▁crack ed ▁exhaust . ▁Ear ning ▁itself ▁the ▁nick name ▁the ▁Brook lands ▁Batt les hip , ▁as ▁after ▁putting ▁the ▁fire ▁out ▁B irk in ▁kept ▁racing . ▁P aget ▁result antly ▁paid ▁for ▁No . 1 ▁to ▁be ▁re - b od ied ▁with ▁a ▁single ▁al umin ium ▁shell ▁by ▁Re id ▁Rail ton , ▁and ▁painted ▁in ▁their ▁racing ▁red ▁colour . ▁▁ 1