review
hub reduction>
A wooo-woo sound when bus move into higher gears
Diffrentials >
A loud flat grinding sound underneath you. Sometimes unberable
to the ears. Common when bus ages.
the word diffrentials is actually abused by bus fans. the actual
meaning has many forms
Noun - the device, the diffrential fitted to
axle. this assist the wheels to turn in sync when bus moving. U dun
want one wheel turning faster than the other.
ECU lingo - Diffrentials - the
diffrence between gear shift rpm rates or some other numbers.
Adjust diffrentials - done on ECU
f1 reference - Diffrential adjustment was banned in 2007 for
F1.
Fan belt screech:
loud screeching sound. Often mistaken for wheel tyres rubbing on
road. But actually is a screechy fanbelt.
most 'aunties' on 159 mistake screeching fan belts for buses
constantly performing burnouts upon acceleration.
takes quite a bit of patience to tell them that we're not
drifting. 
