Technical questions about buses , please post here.
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I open up this new thread to dedicate only about the technical side of buses only .
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1. How powerful is the Scania L94UB?
2. Does the Neoplan Centroliner use the same engine as the MAN 24.310? -
erm wat difference is there in MB series like O405 and O305 or O306 and so on?
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MB O405 is the current Mercedes single deck buses operated currently by both SMRT and SBST.Originally posted by SBS9828X:erm wat difference is there in MB series like O405 and O305 or O306 and so on?
MB O305 is the old Double decker Mercedes buses which are all gone. -
Then what is the difference in the SBS TRANSIT's 0405 and TIBS 0405 Mercedes ? The only difference that I know is the moving sound.Originally posted by Airbus330Captain:MB O405 is the current Mercedes single deck buses operated currently by both SMRT and SBST.
MB O305 is the old Double decker Mercedes buses which are all gone. -
SMRT and SBST 0405s differ in engine and bodywork configurations. Of coz...they have different gearboxes too. I know SBST 0405s use MB gearboxes, as for SMRT 0405s, they use Zoith gearboxes if i never remember wrongly. ^ ^
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Sorry...SMRT 0405s use ZF gearboxes.
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erm i mean in specs like there are O306 and O305 O405... so wat are the diff?Originally posted by Airbus330Captain:MB O405 is the current Mercedes single deck buses operated currently by both SMRT and SBST.
MB O305 is the old Double decker Mercedes buses which are all gone. -
The O405 is the successor of the O305. The Citaroes, in turn, are the replacement for the O405.Originally posted by SBS9828X:erm i mean in specs like there are O306 and O305 O405... so wat are the diff?
The standard engine for the O405 is the MB OM447h, while the O305s use the earlier version OM407h. Currently, the MB engines in production include the OM457 range. -
What is the difference in bodywork in between DM 3500 and DM for Mark IVs?
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MK IV DM 3500 uses Duple-Metsec 3500 body (Pink Interior) and MK IV DM uses Duple-Metsec body (Blue interior)Originally posted by Donavan:What is the difference in bodywork in between DM 3500 and DM for Mark IVs? -
Why are VO3x so prone to breaking-down compared to LO3x? Saw the accident and break-down thread. Dominated by VO3x. Now afraid to go to Clementi. Always have a lot of VO3x one.
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1. Common specifications for the L94UB engines are 9.0 litres displacement, in-line 6-cylinder engine with two valves per cylinder, electronic diesel control, turbocharger and charge air cooler.Originally posted by iveco:1. How powerful is the Scania L94UB?
2. Does the Neoplan Centroliner use the same engine as the MAN 24.310?
Power rating options:
DC901: 230hp (170kW) @ 1900rpm; max torque is 1100 Nm @ 1100-1300rpm
DC902: 260hp (190kW) @ 1900rpm; max torque is 1250 Nm @ 1100-1300rpm
DC903: 300hp (220kW) @ 1900rpm; max torque is 1400 Nm @ 1100-1300rpm
The one in use in Singapore most probably uses a DC902 engine.
2. Bus spotters with knowledge of Hong Kong buses is more suited to answering your query. -
erm any O0205 or such?Originally posted by iveco:The O405 is the successor of the O305. The Citaroes, in turn, are the replacement for the O405.
The standard engine for the O405 is the MB OM447h, while the O305s use the earlier version OM407h. Currently, the MB engines in production include the OM457 range. -
Thers actually 3x more VOs than LOs. If u were to compare, there is no fairness.Originally posted by Donavan:Why are VO3x so prone to breaking-down compared to LO3x? Saw the accident and break-down thread. Dominated by VO3x. Now afraid to go to Clementi. Always have a lot of VO3x one. -
As it seems, lots of VO3x in that accident and break-down thread (about 6 times that of LO3x)... Anyway, why did they get rid of the side emergency exit of VO3x Batch 2 onwards? (93xx and onward)
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bcoz they equip a hammer 4 u to break the windows so no need emergency exits...and not onli the sides were removed, the hind window was oso removed.Originally posted by Donavan:As it seems, lots of VO3x in that accident and break-down thread (about 6 times that of LO3x)... Anyway, why did they get rid of the side emergency exit of VO3x Batch 2 onwards? (93xx and onward) -
Very briefly, the basic differences :
O 306 - front engine OM 352 of in-line 6-cylinders 5675 cc
130 BHP ~ 500 Nm, spring suspension. Produced in 1970's.
O 305 - rear horizontally mounted boxer-style engine OM 407 h/hA of in-line 6
11412 cc of 240 to 280 BHP ~ 900 Nm, air suspension with optional
engine encapsulation. Produced till around 1985.
O 405 - as per O 305 but using OM 447 h/hA/hLA of 11967 cc of 250 to 299 BHP
~ 1000 Nm with up to Euro-2 emission standards. Produced since
around 1985 & still available in certain markets.Originally posted by SBS9828X:erm i mean in specs like there are O306 and O305 O405... so wat are the diff? -
Never heard of.
But there's 207 D which is van based minibus from T1 series.Originally posted by SBS9828X:erm any O0205 or such? -
thats great... seems that it goes in order... O207, O305 O306 and O405
Thanks -
erm are Blow Off Valve found in buses since they are turboed?
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How do you actually use the emergency exit from the upper deck? [From 90xx to 91xx and 93xx, the back exit, 92xx, the back and side exits, and for 94xx to 96xx, the hammers (VO3x only.)] We don't actually jump out of the buses in an emergency, do we?
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But i don't think there's any O 207, as 'O' means omnibus which i believe means to them PSV > 3.5 tons GVW. 207 D is below 3.5 tons class so technically would not likely qualify into the O-Class, as i prefer to loosely know it as !
In terms of overall vehicle specifications, i'll consider the O 309
as the entry-level model in the O-Class, as although it also used the entry-level OM 616 engine the O 309 is much larger & heavier than 207 D, definitely
into the T2 series if basing on the GVW ratings !
As for the other 3 models you mentioned, i'll say the O 306 is light years behind the O 305 in specifications. Just 1 digit less but the O 305 is by far clearly the overall vastly superior model over O 306 !! O 405 is overall deemed superior over O 305 but i find the 'jump' in advancement nowhere as great as between O 306 & O 305 !Originally posted by SBS9828X:thats great... seems that it goes in order... O207, O305 O306 and O405 Thanks -
If the staircase and lower deck are still accessible, use this way to get out. Otherwise, hope that the SCDF personnel arrive fast with the ladders.Originally posted by Donavan:How do you actually use the emergency exit from the upper deck? [From 90xx to 91xx and 93xx, the back exit, 92xx, the back and side exits, and for 94xx to 96xx, the hammers (VO3x only.)] We don't actually jump out of the buses in an emergency, do we? -
Was the O306 superceded by the OF and OH series in later years? I seem to find some common features in all of them.Originally posted by hseochin:But i don't think there's any O 207, as 'O' means omnibus which i believe means to them PSV > 3.5 tons GVW. 207 D is below 3.5 tons class so technically would not likely qualify into the O-Class, as i prefer to loosely know it as !
In terms of overall vehicle specifications, i'll consider the O 309
as the entry-level model in the O-Class, as although it also used the entry-level OM 616 engine the O 309 is much larger & heavier than 207 D, definitely
into the T2 series if basing on the GVW ratings !
As for the other 3 models you mentioned, i'll say the O 306 is light years behind the O 305 in specifications. Just 1 digit less but the O 305 is by far clearly the overall vastly superior model over O 306 !! O 405 is overall deemed superior over O 305 but i find the 'jump' in advancement nowhere as great as between O 306 & O 305 !