Volvo Olympians stink during peak hours?
-
I do not know why, but particulary only the VOs stinks badly during peak hour, especially buses such as 74. It happened to other services such as 132 as well.
1 thing to note is that B9TLs do not stink though...(so far I have not went up on a stink B9TL)
-
old buses smell sucks, new buses smell nice..
-
depends on what food
and scent 
passengers bring onboard.. take 67/960 on sunday.
and when pri/sec sch kids after CCA go home.. -faints- -
I find that Service 74 is smell nice....I like the smell...
-
Originally posted by sinicker:
depends on what food
and scent passengers bring onboard.. take 67/960 on sunday.
and when pri/sec sch kids after CCA go home.. -faints-
Yes, you try to stand at the articulated portion of 67 and 960 and even 187... I tell u the smell is worst than the "Hong Kong Feet". especially the air con is weak and no fan at all. Sometimes, I just alight and wait for another bus as I cannot tahan. -
Sometimes I feel VO2x > VOs
-
Air conditioning on public buses are normally categorized as the 'direct-drive air conditioning', meaning that the main engine drives the air conditioning unit. How it actually drives, will be explained below...
For double decks like the LO, VO, VSO and B9TL, the air-con unit is mounted above the engine at the rear compartment. Cooled air is directed through the ducts towards the front of the vehicle. Air is recirculated by two intake ducts, one on the lower level, all the way to the rear (LO recirculation ducts are placed at the cabin midship section).
For underfloor air-con units like the O405, the recirculation ducts are the two netting sections along the duct in the passenger cabin above the rear axle. Air is directed up and down through pipings in the bodywork structure (window frames).
Direct-drive air-con units have drawbacks like lower cooling capacity when the engine is idling, especially in traffic jams. Why do some buses still have strong air-con when the bus is not in motion? Likely that the compressor is taking more power from the engine. This affects the performance of the vehicle.
In the engine, the engine drive shaft powers the main drive line plus the alternators, compressors and radiator fan. More mechanical resistance from the compressors create more resistance the engine have to drive, hence affecting performance. Low speed operations this will not be obvious, once it speeds up it will be evident.
Compressors not only provide air-con pressure, but also the brake pressure systems if the bus is using a full air brake system. Then again, more work for the engine to do.
This is also why some coaches have an auxiliary engine that solely powers the air-con unit. The main engine can concentrate on doing its own job plus providing electric power through the alternators, which does not have as much mechanical resistance as compressors. Auxiliary engine however consumes fuel with the main engine and is not a fuel efficient method.
-
i juz took a vo3x batch 1 with follow me ad on 55 and no stink wat lol and it oso during peak hour lol
-
Just nw i take sbs8789g got the nice KUB smell
-
You mean they don't smell during off-peak?
Then you must be talking about smell from people. Else if you're talking about the bus, you get less people to share the scent during off-peak
-
LO doesn't hav this prob? (except some got the engine smell)
-
Originally posted by chickenlittle2:
LO doesn't hav this prob? (except some got the engine smell)
LOs smell nice! :D I dun see any problems at all (except for some B9TLs; they oh-so-stink!)
-
u guys should try these buses at those timing to experience it man.
its the 6pm-7.45pm.
even the aircon coming out got the stinko smell.
-
Most of the VOs smell weird when the a/c unit is pumping out warm air and the bus is relatively packed. Like my journey home on svc 5 today during peak hr.
-
Originally posted by SMB92U:
LOs smell nice! :D I dun see any problems at all (except for some B9TLs; they oh-so-stink!)
cos diff A/C concept. -
sv 23, 64, 65, 66, 147 everyday. (: