Volvo B10M-60 (Mark IV)

Volvo B10M Mark IV

SBS Transit Volvo B10M MkIV

Other names Mark 4
Manufacturer Volvo Buses
Bodywork PSV International
Duple Metsec
Walter Alexander
Year 1994 –
Local Operators SBS Transit
Technical Data
Length 12m
Width 2.55m
Entry High floor
Engine Volvo THD101GD
Volvo THD102KF
Gearbox Voith DIWA 381.4
Voith DIWA 863.3
ZF 4HP500
Emission Standard Euro I

WeHaveMoved1

The Volvo B10M-60 Mark IV is a mid-engined single-deck transit bus built by Volvo Buses, as part of the B10M line of bus chassis. Commonly referred to as the “Mark 4”, it is the successor of the Volvo B58. Like other Volvo buses, the chassis was manufactured in Sweeden.

Singapore Bus Services (SBS) acquired 475 of such buses between 1994 and 1997, with four different variants of bodywork, namely the PSV, DM, Strider and DM3500. In addition, SBS trailed two demonstrators of this model with extended lengths, both of which were not successful.

Volvo B10M Mark IV – PSV / Soon Chow

In 1993, Singapore Bus Services (SBS) purchased 20 units of the Volvo B10M Mark IV for use on shuttle bus services in Sentosa. Registered as private buses (SH-plate), they were operated by subsidiary company SBS Leisure within Sentosa Island, bearing yellow and green liveries and a Mobitec Flip-dot Electronic Destination Signage (EDS).

SBS chose the 245-horsepower 9603cc Volvo THD102KF engine for this batch of Mark IVs, a slight downgrade from the 273-horsepower Volvo THD101GD engines in the Mark III. The gearbox used was a three-speed automatic Voith DIWA 381.4. Bodywork was supplied by PSV International and assembled by local bus bodybuilder Soon Chow Workshop Pte Ltd. Air-conditioning units were supplied by Sutrak.

SBS Leisure Services:

SBS Leisure operated the Sentosa shuttles with the PSV Mark IVs until their contract with Sentosa terminated in 2004. Ten of the buses were re-registered as SBS8019X – SBS8028U, continuing in numerical order after the Dennis Darts. Their EDSes were removed, and painted with normal SBS livery and entered revenue service. The remaining ten retained their private registration plates, and seven of them were sold to A&S Transport Pte. Ltd.

While SBS8024E and SBS8025C were converted to training buses for Hougang Depot, the remaining eight PSV Mark IVs spent the remainder of their lifespan on Service 78 under Soon Lee Bus Park. With the entire fleet doing revenue service on Service 78, special deployments of these buses to other bus services were sought after by bus enthusiasts.

Nearing their 15-year lifespan, some PSV MkIVs received a refurbishment to extend their lifespan by two years, including the two training buses in Hougang Depot. The last of them retired in 2011.

————————————————————————————————————————————

Volvo B10M Mark IV – Duple Metsec

In 1995, Singapore Bus Services (SBS) further purchased another 115 units of the Volvo B10M Mark IV. Registered as SBS882Y – SBS996C between Aug 1994 and Apr 1996, they were in direct numerical continuation after the Volvo B10M Mark III. These batch of buses come in two engine and two gearbox variants.

Volvo B10M Mark IV – Duple Metsec

Basic Specifications:

  • Volvo THD101GD engine [8 units]
    9600cc, 273hp (204 kW) @ 2200rpm
  • Volvo THD102KF engine [107 units]
    9603cc, 245hp (183 kW) @ 2200rpm
    Euro-I Compliant
  • Voith DIWA 381.4 gearbox [15 units]
    Three-speed automatic
  • ZF 4HP 500 gearbox [100 units]
    Four-speed automatic
  • Duple Metsec Bodywork
    Chassis built in Europe, bodywork supplied by Duple Metsec of UK. Assembled locally by SBS Engineering Pte Ltd.
  • Sutrak air-conditioning, roof mounted

The Volvo B10M MkIV was part of a large fleet-wide expansion and renewal scheme by SBS. An improvement over the Mark III, most of these buses were fitted with the 245bhp Volvo THD102KF inter-cooled engines, meeting the Euro 1 emission regulations set by the European Union. A small number was fitted with the older 276bhp Volvo THD101GD engine, which was not inter-cooled.

The radiator of the bus was moved from the front to the side, just before the front wheel arch. This made it a distinguishing feature of the model. Currently, they typically serve on short and medium-haul routes which have not been declared wheelchair-accessible, or on wheelchair-accessible bus routes as a fleet minority.

Additional features:

External advertising boards on SBS957R

The Volvo B10M MkIV has a licensed capacity for 82 passengers, comprising of 50 seated and 32 standing passengers

Some MarkIV DMs were fitted with external advertising boards, such as SBS885P, SBS896H, SBS906M, SBS919B, SBS921T and SBS957R. Known as “skyliners”, they pop out of the bus and charge special advertising rates. These mobile billboards are maintained by Moove Media, the advertising arm of ComfortDelGro Corporation, SBS Transit’s parent company.

In addition, SBS910A has a modified seating configuration, with a long side-facing seat for three people at the nearside of the bus, in place of two front-facing seats for four people. An advantage of this design is more legroom for commuters, as the Mark IV DM has notoriously small legroom for some seats. SBS984L has grills on the offside of the bus, unlike most Mark IVs which have them on the nearside.

  • Buses with Volvo THD101GD: [8 units]
    SBS883U, SBS885P, SBS887J – SBS889D, SBS894M, SBS903X – SBS904T
  • Buses with Volvo THD102KF: [107 units]
    SBS882Y, SBS884S, SBS886L, SBS890Z, SBS891X – SBS893R, SBS895K – SBS902Z, SBS905R – SBS906M, SBS907K – SBS996C
    ——————————————————————-
  • Buses with Voith DIWA 381.4 gearbox [15 units]
    SBS883U – SBS889D, SBS891X – SBS894M, SBS903X – SBS906M
  • Buses with ZF 4HP 500 gearbox [100 units]
    SBS882Y, SBS890Z, SBS895K – SBS902Z, SBS907K – SBS996C

The bus model variant was retired on 17 Apr 2015, with the retirement of the final 5 units (SBS992M – SBS996C).

————————————————————————————————————————————

Volvo B10M Mark IV – Walter Alexander Strider

In 1995, Singapore Bus Services (SBS) further purchased another 150 units of the Volvo B10M Mark IV. Registered as SBS1896B – SBS1999M, they were a direct continuation of the Volvo B10M Mark III. The remaining buses were registered as SBS2593T – SBS2688D, a numerical continuation after the Mercedes-Benz O305s. Buses were registered from 26 Oct 1995 to 24 Feb 1997.

Volvo B10M MkIV – WA Strider

Basic Specifications:

  • Volvo THD102KF engine
    9603cc, 245hp (183 kW) @ 2200rpm
    Euro-I Compliant
  • ZF 4HP 500 gearbox
    Four-speed automatic
  • Walter Alexander AF-type Bodywork
    Chassis built in Europe, bodywork supplied by Walter Alexander Coachbuilders of Scotland. Assembled locally by SBS Engineering Pte Ltd. The iconic AF-type “Strider” bodywork earned them the popular nickname “Striders
  • Sutrak air-conditioning, roof mounted

The difference in registration numbers do not represent a different batch; SBS simply did not want to continue the registration after 1999M in conflict with their retired Albion Vikings  and OF1413 using the numbers in the past.

Currently, they typically serve on short and medium-haul routes which have not been declared WAB.

Additional features:

External advertising boards on SBS1908B

The Volvo B10M MkIV Strider has a licensed capacity for 84 passengers, comprising of 48 seated and 36 standing passengers

Some MkIV Striders were fitted with external advertising boards, such as SBS1908B, SBS1985C, SBS1988U, SBS2608K and SBS2619D. Known as “skyliners”, they pop out of the bus and charge special advertising rates. These mobile billboards are maintained by Moove Media, the advertising arm of ComfortDelGro Corporation, SBS Transit’s parent company.

In addition, SBS1973L had CCTV cameras installed at the rear for safer reversing, and SBS2652G had solar panels installed on the roof. SBS1992G was sold to National Library Board and converted to a mobile library nicknamed “Molly”, now registered as XD5296A. Pictures are attached at the bottom of this article.

The last four registered Striders, SBS2685L to SBS2688D, were JB-registered to replace the retiring Volvo B10M MkIIIs on cross-border routes.

————————————————————————————————————————————

Volvo B10M Mark IV – Duple Metsec DM3500

In 1996, Singapore Bus Services (SBS) purchased 150 more units in its final batch of the Volvo B10M Mark IV orders. Registered as SBS2689B – SBS2838M from Aug 1997 to Dec 2000, they were a direct continuation of the Volvo B10M Mark IV Striders.

Volvo B10M MkIV – Duple Metsec DM3500

Basic Specifications:

  • Volvo THD102KF engine
    9603cc, 245hp (183 kW) @ 2200rpm
    Euro-I Compliant
  • Voith DIWA 381.4 gearbox
    Three-speed automatic
  • Duple Metsec DM3500 Bodywork
    Chassis built in Europe, bodywork supplied by Duple Metsec of UK in the DM3500 variant.
  • Sutrak air-conditioning, roof mounted
    Exceptions include SBS2750G (using Webasto) and SBS2810S & SBS2838M (using Carrier)

Currently, they typically serve on Premium routes, as well as short and medium-haul routes which have not been declared WAB.

Additional features:

The Volvo B10M MkIV has a licensed capacity for 87 passengers, comprising of 46 seated and 41 standing passengers.

External billboard advertising

Some MkIV DM3500s were fitted with external advertising boards, such as SBS2691T, SBS2722M and SBS2826Y Known as “skyliners”, they pop out of the bus and charge special advertising rates. These mobile billboards are maintained by Moove Media, the advertising arm of ComfortDelGro Corporation, SBS Transit’s parent company.

In addition, SBS2754X had out-swinging plug doors for the exit doors, instead of the traditional in-swinging leaf doors. SBS2779A was equipped with an orange Transit Media Electronic Display Signage (EDS), which was removed some time in 2010.

75 buses of this batch were SPAD-registered in 2011 to replace the retiring Volvo B10M MkIIIs on cross-border routes. They have since been replaced by SPAD-registered Scania K230UBs in 2014.

Two DM3500s also had complete interior makeovers. These ‘concept buses’ were fully refurbished with special interior layouts as part of long-term advertising. SBS2696E was converted into Nokia Music Mobile buses, with side facing seats, armchairs and a mock-up bar (SBS2779A and SBS2812L only bore the advert). SBS2837R was converted into a HP concept bus featuring seats with headrests, and various HP products displayed in the interior. For pictures, check out the sgbuses.com gallery here and here.

Volvo B10M-60 Mark IV
Registration Engine Gearbox Introduced Retired Bodywork
SBS8019X – SBS8028U Volvo THD102KF Voith DIWA 381.4 1993 2011 PSV International
SBS882Y – SBS996C Volvo THD101GD (8),
Volvo THD102KF (107)
Voith DIWA 381.4 (15),
ZF 4HP 500 (100)
1994-1996 2015 Duple Metsec
SBS1896B – SBS1999M; SBS2593T – SBS2688D Volvo THD102KF ZF 4HP 500 1995-1997 2015 Walter Alexander Strider
SBS2689B – SBS2838M Voith DIWA 863.3 1996-1997 Duple Metsec DM3500
Volvo B10M-70 Mark IV
SBS997A Volvo THD102KF ZF 4HP 590 1995 2012 Duple Metsec
Volvo B10MA-60 Mark IV (Articulated)
SBS998Y Volvo THD102KF ZF 4HP 590 1996 2006 Duple Metsec

————————————————————————————————————————————

Additional section: Volvo B10M-70 Mark IV – Duple Metsec Superlong 14.5m (SBS997A)

In 1995, with the delivery of Volvo B10Ms under way, SBS also introduced a three-axle version of the same chassis. Registered on 14 Oct 1995 as SBS997A, it was 14.5 metres long, the longest rigid bus in Singapore.

SBST Volvo MkIV Superlong – Service 83

Like its other Mark IV cousins, the bus was fitted with the similar 245hp Volvo THD102KF engine, but coupled to a ZF 4HP 590 gearbox. The bodywork was built by Duple Metsec, arranged for 62 seated and 48 standing passengers. It was unique in having a tapered rear end which reduced risk of accident while turning around corners. As such, the rear row was reduced to four seats across. At introduction, the bus was equipped with an Electronic Display Signage (EDS) from Mobitec, of the green flip-dot kind.

The bus made its debut on 19th October 1995, operating on Service 76 on a six-month trial which also covered Servces 107 and 174. The bus was later retained and settled on Service 62 for much of its lifespan, before being redeployed to Service 83 for its last few years. The bus was de-registered on 13 October 2012, scrapped after its 17-year lifespan.

————————————————————————————————————————————

Additional section: Volvo B10MA-60 Mark IV – Duple Metsec Articulated (SBS998Y)

Following SBS997A, SBS introduced another Volvo B10M demonstrator, now even longer. Registered on 02 Apr 1996 as SBS998Y, the 19-metre long articulated bus was labelled as ‘Asia’s Longest Bus’.

Like its other Mark IV cousins, the bus was fitted with the similar 245hp Volvo THD102KF engine, but coupled to a ZF 4HP 590 gearbox. The bodywork was built by Duple Metsec, arranged for 54 seated and 93 standing passengers. Like SBS997A, the bus had a tapered rear end which reduced risk of accident while turning around corners. As such, the rear row was reduced to four seats across. Like SBS997A, the bus was equipped with flip-dot EDS from Mobitec.

SBS998Y was a trailer bendy, meaning that the mid-underfloor engine delivered driving power to the middle axle, and not the rear axle as most commonly used most articulated buses in Singapore (especially the Mercedes-Benz O405G pusher bendy). With the rear axle available for steering, the trailer section could more closely follow the front section while turning; however this design had its flaws. Like all trailer bendies, SBS998Y was very difficult to reverse park and had to have special easily-accessible parking lots drawn out for the bus at interchanges. It remains today as the only trailer bendy to be deployed in Singapore.

Throughout its lifespan, the bus was delegated to Bedok North Depot, serving Services 18 and 290. It was de-registered and sold to Bayes Coachlines (New Zealand) in 2006, with SBS Transit’s other bendy, SBS999U.

————————————————————————————————————————————

Gallery:

NLB Mobile Library “Molly” – Offside

NLB Mobile Library “Molly” – Rear


SBS2754X – Plug exit doors

————————————————————————————————————————————

References:

Back to Volvo B10M 
Back to Bus Models
Back to Bus Articles

3 thoughts on “Volvo B10M-60 (Mark IV)

    • Is Ok Keith, but Volvo B10Ms have also have another Duple Metsec DM3500 Batch. Duple Metsec DM3500 will retired by 2017. Well Keith, that I’m also sad that Walter Alexander Strider on SBST have to Retired by August 2015.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s