Weird Bus Sounds

Scania N113CRB luver SG

SMRT svc180's TIB873E also had funny sounds, especially when accelerating, maybe engine noise, i dont know. Some SMRT CAC O.405 also had funny axle sounds, especially when it hits a hump, you can hear a "lok lok lok" sound. Svc171 has alot of funny buses that emits funny sounds, there's one bus OAC O405, the ZF gearbox sound is very loud, slightly louder than those Scania!

stooper SG

Is this the bus with a very loud & distinctive ZF howl when it changes from 2nd to 3rd gear?

Volvo Olympian SG

Hmm , like that can record bus sounds then Laughing

Scania N113CRB luver SG

You are spot on man! I did record one of the bus sounds, and its the one with the loudest howl when the gear lock-up kicks in! Very Happy This is it! http://download.jupiter.come2store.com/Scanialuver/Record011.mp3
I just love ZF!

kenn3th SG

sv 154 has a DD bus that makes a beep beep beep sound whenever it has just started.. why leX? only after moving for awhile then no more..

TIB1049L SG

Originally posted by stooper:
Another bus is 9098K, which has been cameoing on 179/242 x-overs recently. You can hear it both externally and internally. It sounds like a high pitched washing machine... It even sounds like there is water moving inside, like "shhhhhhhhh"! Laughing
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Reminds me of the 1181L after they fixed it Laughing

SBS7339D SG

A DAF got the screeching sound while accelerating. Heard the noise while at WOodlands Reg Int.

SBS9888Y SG

yea 9599G, izzit a VO3x? the speed limiter spoil no BC go make report and i tink amdep put sth that if it cant accelerate smoothly the sound comes out, ting ting ting, but after it can reach 40/50km/h no more liao

SBS9888Y SG

umm MB0405 jerky equal to less trouble and depot maintenance as MB0405 meant to be jerky if not sth is wrong liao

The_Bus_Guide SG

I think our chicken friend here need to understand what is happening inside the O405. You see, the MB gearbox is a unique bloke. It allows the gear to 'slip' and then 'locks-up'. So that's the jerk while the bus moves. Then, when braking, it has a 3-step retarder. The retarder helps the bus to stop and ease the burden on the brakes. So that's the jerk while the bus stops. With all the ZF and Voiths around the SBST O405 stands unique by havings its own gearbox.

I rode on 315T which Mr. Chickadee here claimed to have bad jerkings. Maybe I'm more tolerant as I have survived in much worse buses before; for I find 315T to be normal. A bit harsh while shifting, yes, but otherwise its OK; and quite enjoyable too. Perhaps they have fixed the bus?

chickenlittle2 SG

OMG, pls try SBS 3733A. U would not believe that u r taking a MB 0405 bus.

TIB1049L SG

You mean the rubber tyre skidding type of noise? Used to be quite normal during one time when all buses did that Rolling Eyes

TWS4793 SG

This was what I wrote in 'Post all your complains here' thread.

The windscreen wiper on SBS 0778R squeaks very loudly when it was activated. I remember once when I board this bus as a cameo for service 69, it was raining halfway through. But when the windscreen wiper was activated, it sqeaked so loudly that I couldn't even have a peaceful ride on the bus.

Weather condition at that time was very bad, with a heavy downpour.

SBS3625D SG

Thanks for the timely explaination! Now I can understand better why the time-lag between gear changes is quite long in the 0405. It would be accelerate......then rpm suddenly stays constant for 1s before the jerk.

SBS3625D SG

I doubt that's what he meant.

Scania N113CRB luver SG

You forgot about the "psst ; psst; psst psst" sound after the retarder had used the hydraulics/air to slow the bus and releases it back into the reservoir , thus producing the "psst psst" sound. You can also notice a "whrecnck..." sound if the BC brakes hard. The "psst psst" sound can also be noticed in ZF gearboxes, only softer than the MB gearbox. Mr. Green

SBS9888Y SG

whoa 3736S… engine is rather quiet at first few gears and idle… but the engine sounds very fakely modified… orrrrrrrr sound at highest gear on 335 along jurong town hall road

SBS9888Y SG

orrrr sound same as buses like 289K, 291C

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