MBO405

The_Bus_Guide SG

I think I know the answer to D. That sound is due to the hub-reduction axle on the rear wheels. Unlike the engine which slows down with an upchange in gears, the wheel will go faster. Hence an increasing pitch.

Howling and whirring on the O405 can be attributed, among other things, to the torque convertor in the gearbox, the above mentioned hub-reduction axles or the exhaust.

The_Bus_Guide SG

There are 2 known Mk III specimens with a ZF gearbox, SBS 876 and 877, the latter being a BBDEP SP. From a personal experience, there is no differences in terms of performance between a ZF and a Voith Mk III.

SBS1908B SG

Wahhh...... must try 1 day. Laughing

^tamago^ SG

SBS876R is on BN 31.

yes, SBS877M is on BB 170/SP. usually cameos on svcs like 123, 156, 191 & 198.

iveco SG

There are more than one bus model using CUmmins engine. Do they have similar problems too?

The_Bus_Guide SG

The other model with distinct turbo lag would be the LT10 on the Leyland Olympian. The 6BT on the Dart and the M11 on the Trident are less obvious.

In general, all turbocharged engines will have a turbo lag. What matters is how fast the turbo can kick in.

hseochin SG

The chassis shown is NOT of the O 405, more like the newer generation OC 500 instead !

Very obvious hint is the dashboard & steering-wheel..O 405's have never looked like that. It's the curved type like on O 305 & MAN SL 252 instead.

hseochin SG

'A' as in OM 447 hA refers to the turbocharged version of the OM 447h which originally was naturally aspirated, which by the way is not denoted by any alphabets.

iveco SG

What I mean is do other Cummins-engined vehicles belch black smoke like the Lances, whether Euro-II or otherwise.

iveco SG

Did Daimler-Benz build rear axles and dashboards for the Machine factory of Augsburg & Nuremberg? I notice the MAN rear axle resembles an O405 one.

hseochin SG

As i mentioned in earlier posts, OM 447 hA is turbocharged version & OM 447 h the earlier naturally aspirated version.

I believe the OM 447 series no longer offered in Europe whereby it's been superceded by the newer OM 457 series which no longer feature naturally aspirated version but either OM 457 hA or more the norm now & in the future, OM 457 hLA (with intercooling). OM 457 series not used on the O 405 but on the O 405's successor the Citaro instead. Also used on the Travego, the successor to the O 404.

hseochin SG

The dashboards & axle hubs on some MAN & M-B do indeed look very identical, in appearances, shape & size.
I do believe MAN & M-B do share the use of some components, whereby either 1 party makes for both party's use or (less likely) both source from the same 3rd party maker.

Not only in their heavy commercial vehicle models, but also in the light weight class models as well, like the M-B Sprinter & VW LT31 etc.

iveco SG

You mean VW group is connected to MAN in some way?

A side note, the Merc Sprinters are sold in US under the "Freightliner" brand.

hseochin SG

To my knowledge, VW & MAN are related companies.

So in the light class commercial vehicle sector, you'll find VW vans, trucks.
For heavier weight class commercial vehicles, it's the MAN trucks, buses & coaches & bus-chassi.

Daimler-Benz bough over Freightliner trucks many years ago.
But i find the Americans don't want to 'lose face' to see their Yankee brand being eaten away by a German brand, so Daimler appeared to 'accomodate' their concerns by not displaying the M-B logo openly on Sprinters sold in USA ?!
Actually i believe those buying the Sprinter in USA would quickly fix back the higher class M-B star & badge while throwing away the lousier Yankee brand logo !!
I'll most certainly do that, since i know who really originated the Sprinters !

With Sprinters sold in Latin America & almost all the rest of the world, you don't tend to encounter such 'mis-labeled' branding i seem to observe ! My stand is that a Mercedes HAS got to be known as a Mercedes anywhere in the world or moon etc. NO exceptions whatsoever.

With the Asian edition of the M-B 100 D vans & mini-buses there were similar vehicles branded as Ssanyong Istanas instead of the (real original) M-B logo & those in Korea who bough such Istanas promptly discarded the Korean branded logos & replaced them with the M-B logos, as a matter of course !

carbikebus SG

For me the MB O 405 Is the best citybuses that they ever produced,Rugged,Durable and good for stop and go road but mostly wobble on high speeds especially at Highways.Overall it is superior over Scanias,Volvos or other brands.Built to Last!

hseochin SG

Agreed the O 405 is the superior class of citybus, over almost any other i can think of !! Not sure if the newer Citaro can maintain or improve over O 405 & even if so, i'll overall expect only 'marginal incremental' improvements over O 405

But what you mean by 'wobble' on high speeds ? Did you check the condition of the tyres/suspension ? M-B's i find them mostly behave very well @ higher speeds, seems even better than @ slow speeds ! Not surprising because the O 405 also has a very important role in the M-B O-Bahn system, where road speeds of 100 km/h are normal.

M-B's have (with few exceptions) produced buses & coaches with top class suspension ride comfort, whether in the spring or air suspended categories.
Those with V8 engines (like OH 1627 L here) offer top class silence as well !
For people serious about fine class omnibus travel, whether citybus or out-station coach, i find no overall better make around !

Donavan SG

MBO405's are very wonderful. Legroom adequate, comfortable ride. Hardly wobbles along our roads. Can reach a good speed, and also air-con pretty okay. Compare this to any MK IV, and I dare say MBO405 beats them all (maybe won't beat DM3500.) If only we had more MBO405s on our roads... JE deserved to have them. Thank god I live there. Laughing Very Happy Now we know why Clementi is called the DUMP for buses... Wink

iveco SG

Yeah, CLE is quite a DUMP alright. It is the heaven for Mk IIIs (since BBDEP has the lion's share for JB buses). At least we got the VO3X dominant on some routes, as well as some Habits from 106.

Anyway, is SLBP any better? Only got LO3X as ADD. According to some forumite here, good buses don't get to serve on 174. In general, the far west doesn't get very good buses.

Donavan SG

So sad. Lucky JE Int got variety of DT, VSO (1 on 143, hardly seen though. Sad ), VO3x, LO3x, MBO405s, MK II, III, IV (All variations.). Heard some ppl dare say LO3x is better than VO3x lol. Well, not competing about depot. Smile

iveco SG

Ah, but JUR is majority SLBP control. Buses with defects are sent over there.

Trust me, 97 had better buses before the NEL rationalisation took place. And 99 fleet is certainly better than 98.

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