Psst psst sound
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But releasing of brakes shouldnt sound like psst psst...instead it should sound like shhh shhhh.....take the LRT(bukit Panjang) and O405s for example. Try taking a bendy bus (Habit esp).... stand at the front of the bus...when the BC releases the brakes it sounds shhh shhh to me, instead of psst psst leh.Originally posted by menoob:psst psst is becoz buses r using air brakes
stepping or releasing pedal cause air to escape/trapped
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7240D still has the problem today.
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Speaking of VO2x, there was one which caught fire opposite clementi interchange before the bus stop where 105, 99 and 154 stop. The back of the bus was charred and v. black. The bus stop with 154 going in the direction of eunos. I did not catch the rego though.
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yea, i was opp pioneer mall, and i saw it going past meOriginally posted by stooper:7240D still has the problem today. 
psst psst psst, dunno how the driver takes it -
doubt so, reason? read my topic, cause driver i dont think is stepping on any brakes, just acc, then lyke that, the bus ride is unstable and jerkyOriginally posted by menoob:psst psst is becoz buses r using air brakes
stepping or releasing pedal cause air to escape/trapped -
We won't know what causes the psst psst sound unless we ask the mechanics..haha..but there aren't much possible causes except the gearbox or the brakes..but i have this gut feeling that it's the brakes that cause this psst psst sound..the driver need not step on the brakes to make that sound, it might be a problem with the brakes that it releases air even though the brakes are not used..but best to ask the mechanics..lol..
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Yeah, might be an air leakage somewhere. But there's no psst sound when the bus is stopped. It only happens when it's moving.Originally posted by alleggerita:We won't know what causes the psst psst sound unless we ask the mechanics..haha..but there aren't much possible causes except the gearbox or the brakes..but i have this gut feeling that it's the brakes that cause this psst psst sound..the driver need not step on the brakes to make that sound, it might be a problem with the brakes that it releases air even though the brakes are not used..but best to ask the mechanics..lol..