Why sbs dont buy leyland buses anymore?
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Sigh.......I like leyland's buses especially the leyland olympian axle 2 non aircon double deck model. Its a pity that its no longer in service.
Now I think the only leyland model left is the air con double decker.
WHy sbs switch to volvos instead?
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"In 1987 the bus business was spun-off into a new company called Leyland Bus. This was the result of a management buyout who decided to sell the company to the Bus & Truck division of Volvo in 1988."
"In 1988 Leyland Bus passed to Volvo, who continued only the Olympian due to its vast number of outstanding orders. 200 air-conditioned Olympians for Singapore Bus Services were the last order of buses to be manufactured under the 'Leyland' brand. The completion of these orders saw the discontinuation of the Leyland Olympian and the closure of the manufacturing plant in Workington, England. The name would live on when Volvo launched the Volvo Olympian, which was built in Irvine, Scotland."
http://en.wikipedia.org/wiki/Leyland_Olympian
http://en.wikipedia.org/wiki/British_Leyland -
LEYLANDS?!Originally posted by MingFreeman:Sigh.......I like leyland's buses especially the leyland olympian axle 2 non aircon double deck model. Its a pity that its no longer in service.
Now I think the only leyland model left is the air con double decker.
WHy sbs switch to volvos instead?
OH NO! THEY ARE WHAT I CALL TRASH TECHNOLOGIES!
NEVER! NEVER! STUPID ANGLO BODY WITH YANKEE ENGINES!
Really. If you work in my line, you will forever be plagued with the thought of hoping the Leylands get phased out. Mercedes Benz are still the best. Oh well... Company bought so may Volvos... At least they operate a more similar to the Mercedes than Leylands. -
Since u like the LO2x , there are 2 of them left actuallyOriginally posted by MingFreeman:Sigh.......I like leyland's buses especially the leyland olympian axle 2 non aircon double deck model. Its a pity that its no longer in service.
Now I think the only leyland model left is the air con double decker.
WHy sbs switch to volvos instead?
1 can be found at Youth park
and the other one is the Bobbie Gymbus -
they're not movingOriginally posted by Volvo Olympian:Since u like the LO2x , there are 2 of them left actually
1 can be found at Youth park
and the other one is the Bobbie Gymbus
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COMPLAIN SO MUCH FOR WHAT?Originally posted by MS:LEYLANDS?!
OH NO! THEY ARE WHAT I CALL TRASH TECHNOLOGIES!
NEVER! NEVER! STUPID ANGLO BODY WITH YANKEE ENGINES!
Really. If you work in my line, you will forever be plagued with the thought of hoping the Leylands get phased out. Mercedes Benz are still the best. Oh well... Company bought so may Volvos... At least they operate a more similar to the Mercedes than Leylands. -
I think the Bobbie Gymbus can be move , just saw it recently at the National Stadium carpark.Originally posted by XTransbus:they're not moving -
man, ur the idiot here...Originally posted by GREED:COMPLAIN SO MUCH FOR WHAT?
u dont even noe who he is.
u dont even noe what profession he is in.
becoz of him, we get constantly, regularly maintained buses. He knows how to fix it. Unlike u. The ignorant inferior creature who can barely enlighten his own mind. -
haha.....mind if you describe a bit more on why their buses are not good?Originally posted by MS:LEYLANDS?!
OH NO! THEY ARE WHAT I CALL TRASH TECHNOLOGIES!
NEVER! NEVER! STUPID ANGLO BODY WITH YANKEE ENGINES!
Really. If you work in my line, you will forever be plagued with the thought of hoping the Leylands get phased out. Mercedes Benz are still the best. Oh well... Company bought so may Volvos... At least they operate a more similar to the Mercedes than Leylands.
I don't know about the inner workings of the leyland buses. I just find that the outer design is not bad and the engine sound is quite nice
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Engine
Leyland - Cummins Engine. The most headache engine I have in hand. The Cyld head is in one whole block. That means if you want to replace 1 cyld head for weak valve springs or just 1 damaged valve, you have to replace all 6 cylinder head at one go. And you need a floor crane to do it. Waste time waste labour waste money.
The FIP is a pressure timing pump. The only good point is that the FIP do not need to catch engine timing to replace. The bad points are that it relies on a dump valve to prevent fuel flow back. So as to maintain pressure to prevent air lock. So it helps to cut off the pressure. There is a solenoid fuel valve in front to help allow fuel in or cut off fuel. If the dump valve is not working, it will not allow ample pressurised fuel into the fuel valve to start operation. That means the bus has a max speed of <10KM/H. And this always happens. This month alone I had 2 cases. One of them on 9056 and the other on 9060. I know there're more than these 2 cases. And turbo chargers are very problematic. Last time there were quite a number of fire and smoke cases with Turbo chargers. To us, not even the slightest smoke is tolerable. With this kind of high expectations, my other colleague who's in charge of turbo chargers always keep high alert on such items. But for Volvo, we're more at ease.
Volvo - 6 cyld Volvo engine. All 6 cyld are individual. That means you only need to replace one if need be during a top overhaul. Simple straight forward and easy to do. Saves on money, labour and down time. No need floorcrane. FIP is very straight forward. Though the FIP design is complicated like the MB0405, the breakdown rate on this is very rare.
Mercedes Benz - The legendary MB0405 is so easy to fix. Likewise with Volvo, the cyld head is same in design. Except the engine is somewhat like a boxer engine. Horizontally lying down. Both Volvo and Mercedes need to catch engine timing. If the wrong timing is caught, the bus can crank but cannot start. But engine timing is basic maintenance skills of technicians. Not a problem at all.
Front axle
Leyland - The only insane design I have ever seen. Incorporated the front axle design of a small car for the use of a large heavy weight commercial bus. The most problematic @##$% axles I have come across. Leylands have more axle breakdowns than any other buses. The front axle wheel hub bearing is lubricated by grease!!!! What the?! Everybody else is using proper engine oil or GL5 to lubricate which helps to reduces heat and better permeability. But Leyland uses grease?! Grease melts around constant 120DegC to 150DegC. But Oils do not. When grease melts, it leaks out and also loses the properties of a grease. Then the wheel bearing once loses lubrication will be at risk of shattering. I have to upgrade the grease to an extremely high graded grease to prevent this problem from coming. Also periodically call back the bus and replace the grease off and on to prevent the wheel from flying off. God knows how much money I've wasted on this. Grease is talking about thousands per drum.
Mercedes & Volvo - Wheel hub is lubricated by engine oil. No problem at all. Wheel hub oil seal can leak. But this only happens once in a blue moon. Until now I have only seen 1 time in my 1 year plus of work. Even when in the SAF with MAN trucks, I ave seen less than 5 times even with the crazy SAF styled driving over super terrains.
There're many more I can explain which will cover the whole page. God saves Soon Lee with Volvos... Haha.... I hope the time when Leylands go to the scrap yard come quickly.[/u] -
You all pay good money for your bus rides so I must do my best to ensure you have the lowest breakdowns and your rides have zero danger.
This is business sense. Good bus fare prices = branded high end stuffs that helps to ensure you get from pont to point in one piece. (even though many of the public do not know it because most public are laymen to the automotive engineering sector.) And original parts doesn't mean the best. Sometimes, I may have to spend even more in order to bring the best goods into workshop for use so as to guarantee the highest degree of engineering quality. So I can help to justify the fare hikes even better. -
I would rather buy the newer AlexanderDennis buses, say Trident 3 and Enviro500, they have Cummins engines as well. Btw can anyone tell me whether the new Cummins engines are harder to fix as well?
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Leyland as a company no longer exists. However, many people have fond memories of this brand as it is now a classic, like the Austins and Minis.
Anyway, MS, what do you think of the Scanias?
Also, the Dennis Darts & Tridents also come with Cummins engines. DItto for the SMRT Lances. -
Eh 2? 4 is the answer. We have 2 with Gardner engines which were manufactured in 1988 and imported in 1992 in Sentosa, RU403Y and RU404U. RU402A has been de-registered.Originally posted by Volvo Olympian:Since u like the LO2x , there are 2 of them left actually
1 can be found at Youth park
and the other one is the Bobbie Gymbus -
Originally posted by MS:
Interesting... Is that any indication for the dump valve not working properly? Like a loud sound just before it breaks down or something?
[b]Engine
Leyland If the dump valve is not working, it will not allow ample pressurised fuel into the fuel valve to start operation. That means the bus has a max speed of <10KM/H. And this always happens. This month alone I had 2 cases. One of them on 9056 and the other on 9060.
I know there're more than these 2 cases. And turbo chargers are very problematic. Last time there were quite a number of fire and smoke cases with Turbo chargers. To us, not even the slightest smoke is tolerable. With this kind of high expectations, my other colleague who's in charge of turbo chargers always keep high alert on such items. But for Volvo, we're more at ease.
Leylands have more axle breakdowns than any other buses.[/u][/b]
And what exactly is an axle breakdown? Is there any indciations of it as well?
And by smoke, you mean fire from the engine or just the very black exhaust gas? -
I dun have Scanias in my holding so I cannot comment on that. But I have received feedback from the Training center's Training Officer that Scania engines are very lasting. The CDGE Technical Officer also told me the same story. I've even heard one technician from HGWS mentioned that Scania is the only brand that have engines that could stand 10 years of driving.
That was the longest I have ever heard of.
Basically my MB0405 engines lasts about 4 years to 7 years.
Volvo Olympians and B10Ms lasts 3 to 6 years.
Leyland Olympians lasts 2 to 5 years. And during these 2 to 5 years, I would've done so much to repair the engine. Dump valves, fuel valves, cyld heads, FIP, etc etc...
But my Volvo engines if at the end of the lifespan will just engine blow-by and call it an end to it's life.
I personally find that...
MErcedes Benz 0405 are
-reliable
-technically straight forward & easy to understand
-easy to troubleshoot
-Expensive unless you know how to get the parts from the direct suppliers eg. Wabco
Volvo Olympians are
-reliable
-technically complicated, confusing. A lot of tapping of powers via hydraulic fluids which are prone to leaks and hydraulic pressure failures.
-difficult to troubleshoot
-Cheaper
Leyland Olympians are
-not reliable
-technically complicated, confusing. A lot of tapping of powers via hydraulic fluids which are prone to leaks and hydraulic pressure failures.
-difficult to troubleshoot
-cheaper -
have they been replaced by this guy?Originally posted by Scania:Eh 2? 4 is the answer. We have 2 with Gardner engines which were manufactured in 1988 and imported in 1992 in Sentosa, RU403Y and RU404U. RU402A has been de-registered.
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there is a very simple reason why SBST can;t buy Leylands anymore
this is because Leyland has closed down and got taken over by Volvo in 1994. in fact be proud that our LO3x are the very last production unit chasis in the worlds.!!!
ZYX -
Like I said vehicle max speed drops drastically to <10km/h. Lack of power. Cannot climb slopes if for Svc 179. But easy to start and crank. Which shows nothing wrong to electrical aspect.Originally posted by stooper:Interesting... Is that any indication for the dump valve not working properly? Like a loud sound just before it breaks down or something?
And what exactly is an axle breakdown? Is there any indciations of it as well?
And by smoke, you mean fire from the engine or just the very black exhaust gas?
Axle breakdown means noisy and bus veers left right easily while driving. Also lack of power as the pineapple gears in the axle has lost the mechanical efficiency thus unable to effectively transmit mechanical power via the gears to run the wheels. You can learn mechanical efficiency from Mechanical engineering courses or physics.
Actually to SBST smoke case means smoke appears in places that're not supposed to. And this is taken very very seriously. The numbers have greatly improved but many of the public do not know so they say SBST service never improve which is not true at all. We're aiming at zero of such cases all year round. On the other hand, black exhaust could likely be FIP, injectors, exhaust pipe dirty, cylinder head need to do valve clearance or top overhaul package.
Even though I make it an effort to join the ground to conduct repairs sometimes though on paper I'm not required to, what I know is only the tip of the iceberg. Everything is not as assumed by most public perceived it to be. Even our own operations depratments also find that workshops are fascinating. They can walk though the workshop and ask around the whole day and still find surprises everyday the next few weeks. -
So all the present engines are not the original engines? Are they replaced by engines of the same model or have they been changed?Originally posted by MS:Basically my MB0405 engines lasts about 4 years to 7 years.
Volvo Olympians and B10Ms lasts 3 to 6 years.
Leyland Olympians lasts 2 to 5 years. And during these 2 to 5 years, I would've done so much to repair the engine. Dump valves, fuel valves, cyld heads, FIP, etc etc...
And I notice especially that the lower deck seats of some Leylands emit excessive heat (i.e. 9092B, 9058B, etc) when coasting or braking. Is this something to do with the engines also? -
As Of now, there is only 1 left..Originally posted by Scania:Eh 2? 4 is the answer. We have 2 with Gardner engines which were manufactured in 1988 and imported in 1992 in Sentosa, RU403Y and RU404U. RU402A has been de-registered. -
Of course not.Originally posted by stooper:So all the present engines are not the original engines? Are they replaced by engines of the same model or have they been changed?
And I notice especially that the lower deck seats of some Leylands emit excessive heat (i.e. 9092B, 9058B, etc) when coasting or braking. Is this something to do with the engines also?
Engines are replaced off and on. Maybe in a whole life of a bus, there could be 4 engines replacements. In a bid to reduce costs, we overhaul our own engines. Some done by own depot some done by CDGE. But I insist on letting CDGE do it because we pay for a neat sum of >$15K for a Volvo B10M engine that covers a total overhaul package and running in. Also 1 year warranty. Engine overhaul is the easiest to me amongst the 4 major components Engine, axle, gearboxes and diff unit. But still it is something that only professionals in this line with proper specs can do. After overhauling, we need to run in the engine. In my case, the engines are run in by CDGE to achieve optimum results. I cannot possibly get the BC to run in for me.
I have read about hard run in when I visited other forums like the local bike forums but what I can say is that those are crap. You ask any professional in this line who's not any dida-apa 'professional' from some forum rubbish will always tell you to run in according to the manufacturer's recommendations. Specific technical details will go into long story. So whoever interested can PM me for details or meet up sessions.
You are sitting next to the engine if you take the last row of the lower deck's seat. When moving, more heat is emitted because the engine works and stronger combustion will bring about more heat. But when stopped, the hot air gets staled though lesser heat generated, you still feel almost the same amount of heat. Either ways there's always heat. But I assure that there's no harm sitting on the five seater though it's nearest to the engine. If you dun like the idea of being next to the engine, you can choose the upper deck front seats. Furtherest away from all heat sources. -
Scanias long lasting? Get more Scanias. Bring on the K95s.
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But i heard that Scanias are more expensive than Mercedes, is that true?Originally posted by iveco:Scanias long lasting? Get more Scanias. Bring on the K95s.