Nanga Gaat transport....
....was by Shank's Pony.
That's during the times I went there '66 to '67, to when it was packed up.
I cannot recall any motorised vehicle be it four-wheeled or two-wheeled at Nanga Gaat at all, either on the RAF camp or KOSB/Gurkha camp. The place was too small for that. Good clue would be that Main Street between the accomodation huts and also the bridge over the mini-Sungei between the RAF camp and the Army camp was only two-man wide.
DB