SMRT New Euro-V Mercedes-Benz OC500LE WAB bus (Part 1)
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City bus fuel tanks are roughly around 300-400 liters I guess, transit fuel tanks (for movement on chassis only) about 90 liters.
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Originally posted by sinicker:
??
3725S as in the trade plate?
no SMB3725S
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Originally posted by jayh272416:
Talking about MAN buses, I heard they are not compatitable with Singapore climate? I also heard 8031J fuel tank very small, thats why SBST put on short sv like 17, 6, 354... i heard when it cameod on 5, 4 trips fuel tank half already. What are your opinions?
MAN products are not suited to tropical climate. For example, 8031J broke down after less than half a year due to drivetrain, tho that could be Voith as well, CW2 MAN (18.310 i think) at least 1 week cannot go by without a few breaking down. Efficiency, not too sure, but 18.240 got 300L tank compared to OC500LE's 280L. Efficiency of engine not sure, but some say as the engines get cleaner, FC decreases. 6,821cc vs 11.967cc engine, the MAN should be more efficient. The N113 have 10L engine IIRC.
OT: If OC got 11,967cc engine , why SBST never buy B12?
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Originally posted by Raraken:
MAN products are not suited to tropical climate. For example, 8031J broke down after less than half a year due to drivetrain, tho that could be Voith as well, CW2 MAN (18.310 i think) at least 1 week cannot go by without a few breaking down. Efficiency, not too sure, but 18.240 got 300L tank compared to OC500LE's 280L. Efficiency of engine not sure, but some say as the engines get cleaner, FC decreases. 6,821cc vs 11.967cc engine, the MAN should be more efficient. The N113 have 10L engine IIRC.
OT: If OC got 11,967cc engine , why SBST never buy B12?
Bus of course will breakdown, how can you determine that a bus is not suitable for this climate just by a breakdown when MAN buses have been proven to run well in similar climates, just look at Brisbane. Your hypothesis is screwed.
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Originally posted by Raraken:
MAN products are not suited to tropical climate. For example, 8031J broke down after less than half a year due to drivetrain, tho that could be Voith as well, CW2 MAN (18.310 i think) at least 1 week cannot go by without a few breaking down. Efficiency, not too sure, but 18.240 got 300L tank compared to OC500LE's 280L. Efficiency of engine not sure, but some say as the engines get cleaner, FC decreases. 6,821cc vs 11.967cc engine, the MAN should be more efficient. The N113 have 10L engine IIRC.
OT: If OC got 11,967cc engine , why SBST never buy B12?
they never maintained a single Volvo before. get a B12BLE and they will screw the whole thing up. plus they used MB for so many years. that's why they get the MB OC500LE.
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Deleted
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SMB 26L is posted to AMDEP. So far (from what I heard) it's the only new bus there.
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25P on 851 today.
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Originally posted by ^tamago^:
25P on 851 today.
=OAny others?
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never see liao. =p took 21A also. smells new.
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27 also came out liao at AM...or so I heard..not sure if its on 851.
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Originally posted by nenepokey:
they never maintained a single Volvo before. get a B12BLE and they will screw the whole thing up. plus they used MB for so many years. that's why they get the MB OC500LE.
He meant SBST, not SMRT. SBST has majority Volvo fleet (well, in the past. Now almost Scania Society liao).
Volvo B12BLE has higher fuel intake compared to the OC500LE. Dave (Powered_By_CNG) can claim this.
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SMB19H to SMB23U are fleet additions ah? :o
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Originally posted by ^tamago^:
SMB19H to SMB23U are fleet additions ah?
Replace, Oceane posted the buses going out somewhere in the redeployments thread, I know one of them is 737R. But there's one less shift running today~
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Originally posted by ^tamago^:
25P on 851 today.
Was on that bus...driver �鸡 :x. Keeps jerking.
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Actually vehicles don't have pretty much a fixed climate for them to run in... Say, buses of the same chassis are shipped across the world; you can find a Mercedes Benz OF in Kazakhstan, Nissan Diesel in Iraq/Africa, all those kind of things.
But the bodywork and coolant plays a factor. If the bus is destined first hand to tropical Africa, would the bodywork be sealed up like it would be shipped to Alaska? Obviously, extra vents would be needed, even cooling systems might have to be changed to those that provide extra cooling than normal.
If shipped to a cold country, the bodywork would need to provide more thermal protection, cooling systems might even need to be replaced by heating systems (if the temperatures are extremely low) to maintain performance of the engine.
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Originally posted by Raraken:
MAN products are not suited to tropical climate. For example, 8031J broke down after less than half a year due to drivetrain, tho that could be Voith as well, CW2 MAN (18.310 i think) at least 1 week cannot go by without a few breaking down. Efficiency, not too sure, but 18.240 got 300L tank compared to OC500LE's 280L. Efficiency of engine not sure, but some say as the engines get cleaner, FC decreases. 6,821cc vs 11.967cc engine, the MAN should be more efficient. The N113 have 10L engine IIRC.
OT: If OC got 11,967cc engine , why SBST never buy B12?
Don't make your conclusions so hastily. You don't know the precise circumstances surrounding the breakdown(s) of 8031J and I'm not about to speculate, since I'm a 6-hour flight away! :)
Please remember that majority of breakdowns (or "defects") on modern buses are caused by faulty electronics and bodybuilder fit-out more so than faulty mechanics.
As for your fuel consumption argument, the size of the fuel tank has nothing to do with it. Some of Perth's Renault PR 100.2s have fuel tanks that barely hold enough fuel to last a full-length shift. The lack of range between refills is not the engine's fault in this case.
And I don't side with the argument that a larger displacement engine automatically results in lower fuel consumption. It simply doesn't - especially for heavy goods vehicles and buses/coaches. A smaller displacement engine would need to work a lot harder than a larger displacement engine to haul a given weight a given distance. In addition, smaller engines are less efficient and have lower power and torque at the lower engine speeds where a bus spends most of it's life. In order to determine real-world fuel consumption, you need to have a look at the specific fuel consumption of the engine and relate that to operating conditions. In many cases, a 7-litre engine may use just as much fuel as a 12-litre engine doing the same job. Why? The 12-litre engine can cruise in a higher gear at low rpm whilst the 7-litre engine is working hard in an intermediate gear at high rpm. Smaller engines can suffer from higher rates of engine wear due to this reason.
Also, remember your Physics formulae:
F = ma, W = Fd, P = W/t, P = Fv
Regards,
DaveP.S.: The Scania L113CRL has an 11-litre engine.
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Today (14/11/08):
- SMB6U (KJDEP77) = 190
- SMB18K = "Off Service" (Probably heading back to KJDEP)
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Originally posted by dinierazin:
Today (14/11/08):
- SMB6U (KJDEP77) = 190
- SMB18K = "Off Service" (Probably heading back to KJDEP)
6U 2nd day.
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Originally posted by dinierazin:
- SMB18K = "Off Service" (Probably heading back to KJDEP)
I think KJDEP goin to fix the rear doors..
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Originally posted by SMRT BUSES LuvER:
I think KJDEP goin to fix the rear doors..
I hope so... -
Originally posted by dinierazin:
Today (14/11/08):
SMB18K = "Off Service" (Probably heading back to KJDEP)
Did S925 Split.SMB 12B on S75 today. Took it.
SMB 24S on training today. Bus is allocated to AMDEP. AMDEP has 24S 25P 26L and 27J currently. -
26L sleeping in depot. Came out for staff shuttle in the evening.
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Originally posted by Powered_By_CNG:
And I don't side with the argument that a larger displacement engine automatically results in lower fuel consumption. It simply doesn't - especially for heavy goods vehicles and buses/coaches. A smaller displacement engine would need to work a lot harder than a larger displacement engine to haul a given weight a given distance. In addition, smaller engines are less efficient and have lower power and torque at the lower engine speeds where a bus spends most of it's life. In order to determine real-world fuel consumption, you need to have a look at the specific fuel consumption of the engine and relate that to operating conditions. In many cases, a 7-litre engine may use just as much fuel as a 12-litre engine doing the same job. Why? The 12-litre engine can cruise in a higher gear at low rpm whilst the 7-litre engine is working hard in an intermediate gear at high rpm. Smaller engines can suffer from higher rates of engine wear due to this reason.
Is this the reason MB discontinued the OM906hLa Citaro engine? Heard it wasnt efficient. And the part about larger displacement = lower FC was not what I meant. What I meant was if Cleaner Engines had lower FC.
May I know why STA bought the B12BLE? Saw some pics of them operating in urban environments with a light load.
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Anytime soon WL is going to get OCs? I've been told that WLDEP is full and thus cannot accept any more buses. Is there any chance a few services (like 173) could be transferred back along with some buses? I think WLDEP is too overstretched as it is.