▁to ▁provide ▁multiple ▁spe eds ▁and ▁reverse , ▁with ▁just ▁one ▁set ▁of ▁planet ary ▁g ears . ▁ ▁The ▁FM X ▁in ▁the ▁photo ▁has ▁three ▁forward ▁spe eds , ▁and ▁reverse . ▁ ▁References ▁ ▁External ▁links ▁ ▁Me cc ano ▁model ▁of ▁a ▁R avig ne aux ▁Planet ary ▁Trans mission ▁in ▁the ▁H 1 ▁Hum mer ▁by ▁Alan ▁W en bourne ▁ ▁Category : G ears ▁Category : E p icy clic al ▁g ear ing ▁Category : Autom ot ive ▁transmission ▁techn ologies <0x0A> </s> ▁Nat ▁Ad der ley ▁Jr . ▁( born ▁May ▁ 2 3 , ▁ 1 9 5 5 ) ▁is ▁an ▁American ▁pop ▁and ▁rh ythm ▁and ▁bl ues ▁music ▁arr anger ▁and ▁pian ist ▁who ▁spent ▁much ▁of ▁his ▁music ▁career ▁arr anging ▁as ▁music ▁director ▁for ▁Luther ▁V and ross ▁t ours ▁and ▁contributed ▁as ▁co - song writer ▁on ▁most ▁of ▁V and ross ' s ▁albums . ▁His ▁father ▁Nat ▁Ad der ley ▁( 1 9 3 1 – 2 0 0 0 ) ▁was ▁a ▁composer ▁and ▁jazz ▁cor net ▁and ▁tr ump et ▁player , ▁while ▁his ▁uncle ▁C annon ball ▁Ad der ley ▁( 1 9 2 8 – 1 9 7 5 ) ▁was ▁a ▁jazz ▁alto ▁sa x oph on ist . ▁ ▁Biography ▁Nat ▁Ad der ley ▁Jr . ▁was ▁born ▁in ▁Qu in cy , ▁Florida ▁on ▁May ▁ 2 3 , ▁ 1 9 5 5 . ▁The ▁sc ion ▁of