The following are model types, which were desginated by numbers.
B55 Ailsa = Front engined double deck chassis
B56 = Mid-mounted underfloor engine, predecessor to the B58.
B57 = Front engined
B58 = Mid-mounted underfloor engine
B59 = Rear mounted underfloor engine
These numbers have a "B" prefix, it is "bakbus", which is Swedish for "Bus".
10 = "10 litre" motor (effectively 9.6L)
12 = 12 litre motor
7 = 7 litre motor
6 = 6 litre motor
These suffixes signify details as to where the engine is located, and other extra details.
M = Mid mounted underfloor engine (B6M)
R/B = Rear mounted underfloor engine (B10B, B10R)
L = rear underfloor engine vertically mounted, low floor chassis (B7L, B10L)
LE = low entry (up to rear axle, or thereabout) (eg. B10BLE, B6LE, B7RLE)
A = articulated (eg. B10MA, B7LA)
SE = special edition (?) (eg. B10MSE)
TL = double deck, vertically mounted rear engine (B10TL, B7TL)
FA = not sure (eg. B6FA)
FA (UF) = mid mounted engine (eg. B6FA (UF))
SA = School Automatic (eg. the new B7RSA)
Note: MOST Scania chassis have rear mounted engines, there are very few mid mounted underfloor examples)
The prefix applies to how the engine is mounted.
L = Vertically mounted engine, tilted 30 degrees to the left (not sure how it is tilted as such)
K = Vertically mounted engine
N = vertically mounted engine, horizontally opposed (east-west mounted)
F = front engined, vertically mounted.
I'm sure there are others, so please help.
These are the digits which signify the engine capacity (or engine output), and follow immediately after the prefix.
9 = 9 litre engine (from 1st to 4th series)
11 = 11 litre engine (from 1st to 3rd series)
12 = 12 litre engine (from 4th series)
230 = 230PS engine (from 5th series - 9 litre 5 cylinder engine)
270 = 270PS engine (from 5th series - 9 litre 5 cylinder engine)
310 = 310PS engine (from 5th series - 9 litre 5 cylinder engine)
340 = 340PS engine (from 5th series - 12 litre 5 cylinder engine)
380 = 380PS engine (from 5th series - 12 litre 5 cylinder engine)
420 = 420PS engine (from 5th series - 12 litre 5 cylinder engine)
The following digits, which follow the engine capacity indicate the series
1 = 1st series
2 = 2nd series
3 = 3rd series
4 = 4th series
The suffixes inidicate the chassis type, and other extra details.
CRB = standard/city floor height with stepped entry (1st to 3rd series)
CRL = low floor chassis (1st to 3rd series)
ARB = standard floor height articulated chassis (1st to 3rd series)
ARL = low floor articulated chassis (1st to 3rd series)
TRB = extended chassis (1st to 3rd series)
For the above, the second letter indicates where the driving controls are situated.
R = Right hand drive
L = Left hand drive
UB = low floor chassis (4th and 5th series)
UA = low floor articulated (4th and 5th series)
IB = "intercity" height chassis with stepped entry (4th and 5th series)
EB = touring chassis? (4th and 5th series)
The 5th series also include a further designation for the IB series where you have:
(source: Scania website)
4x2 = 2 axle vehicle with drive on one axle
6x2 = tri-axle vehicle with drive on one rear axle. One tag axle without drive infront of drive axle.
6x2/2 = tri-axle vehicle with drive on one rear axle. One tag axle without drive in front of the drive axle. Used to designate articulated buses.
6x2*4 = tri-axle vehicle with drive on one rear axle. One steered tag axle without drive behind drive axle
These suffixes denotes what kind of floor height is "married" to the chassis, which is denoted by the prefix. It only applies to the 5th series of Scania chassis. A further designation applies to the 5th series
E = Extra Low
L = Low (low front and normal rear)
M = Low (low front and middle, normal rear), articulated
N = Normal (normal front and rear)
Ok, now the examples.
K94IB = vertically mounted, 9 litre motor, 4th series chassis, intercity floor chassis
N113ARB = horizontally opposed vertically mounted 11 litre motor, articulated standard/city floor chassis
L113TRB = vertically mounted 11 litre motor tilted 30 degrees to the left on an extended chassis
K380IB4x2NB = Vertical 380PS engine with a multipurpose chassis for long and short distances and with normal drive and ride comfort without the special adaptation. It is a 2 axle chassis with a normal floor level throughout the chassis and full air suspension.
K420EB6x2*4LI = Vertical 420PS engine with a chassis for long distance travel and high drive and ride comfort. Chassis has no special afaptation, and has 3 axles, with a steered tag axle behind the drive axle. The coach may aslo be built with a low boarding step and a low floor from the front up to the rear axle. This type of coach is also built with a normal floor level throughout (denoted by the "N", and the chassis is fully air-suspended with independant front suspension.
N310UA6x2/2EB = Transverse engine with 310PS, articulated citybus chassis. Has 3 axles, with a non-steered axle infront of the drive axle. Low floor throughout the length of the bus (denoted by the "E") and the chassis is fully air-suspended.
Most of the prefixes and suffixes are in German, which make it a bit tough, but I'll take a stab.
O = Omnibussen (Bus) (Yet it doesn't explain why the coaches also had an "O" prefix, so maybe I'm wrong)
In minibus chassis, it signifies that it has airbag suspension. This could possibly be the same for the heavy duty chassis.
Pre O.500 chassis:
OH = rear engined Brazilian built chassis
OC = mid engined Brazilian built chassis
OF = front engined Brazilian built chassis
Most of the numbers are model numbers which were designated to a chassis, so, an O.302 is a fully built integral omnibus, series 3, model 2, then there was the O.303, O.404, O.405, O.309 etc.
In Australia some of the fully built model numbers were given to imported platforms (not chassis) with Australian bodies built on.
305 = Early cityfloor chassis
405 = successor to the 305
400 = Brazilian built chassis
500 = successor to the 405
309 = front engined minibus (like an 814D)
302 = early coach
303 = successor to the 302
404 = successor to the 303
The first two digits refer to the Gross Vehicle Mass.
The last two digits of the 4 digit number refer to the brake horsepower, divided by 10.
1316 = 160 bhp, 13 tonnes, GVM
1622 = 220 bhp, 16 tonnes, GVM
N = Niederflurbusse ("Low floor bus" with a vertically mounted engine and stepped entry)
N^2 (N-squared) = Niederflurbusse ("Low floor bus" with a vertically mounted engine, and stepless entry all the way)
NH = Niederflurbus-Hybrid (Front section of an "N" chassis mated with a non low floor chassis with a horizontally mounted engine for a low entry chassis, but not low floor)
G = Glenkenbusse ("Bending bus"/Articulated chassis).
LE = Low entry chassis with a horizontally mounted motor (O.500 chassis only)
LF = Low floor chassis with a vertically mounted motor (O.500 chassis only)
OK, now for some examples.
OF1417 = front engined bus with a 170bhp motor.
OC1621 = mid-engined bus with a 210bhp motor.
OH1622 = rear engined bus with a 220bhp motor.
O.405NH = front section of an O.405N^2 chassis mated to the rear section of an O.405 chassis.
O.305G = articulated O.305.
The following are the prefixes used for the Cityline buses.
Under structure (Monocoque floor):
NL = Niederflur bau-weise linenbusse ("Low floor city bus")
SG = Stadtlinen Gelenkenbusse (City Line Articulated Bus)
NG = Niederflur Gelenkenbusse (Low-floor Articulated Bus)
NM = Niederflur Midibusse (Low-floor Midibus - Europe only)
SGG = Stadtlinen Doppelgelenkenbusse (Double-articulated Bus - Europe only)
NGG = Niederflur Doppelgelenkenbusse (Low-floor Double-articulated Bus - Europe only)
NL = stands for Nieder flur bau-weise Linienbusse (Low floor city bus)
NU = stands for Nieder flur bau-weise Überlandbusse (Low floorintercity bus)
SL = Sonderaufbauten Linienbusse (Super structure city bus)
SG = Sonderaufbauten gelenkenbusse (Super structure articulated city bus)
SÜ = Sonderaufbauten Überlandbusse (Super structure touringcoach)
The three digit numbers in the SL/NL series are as follows:
12- = Nominal engine power in horsepower, divided by 10 (e.g. NL232 is supposed to have a 230hp motor)
--3 = Series number.
Mind you, the above is all up the spout: series numbers were only formally introduced for Series 3 (late 1990s), while power ratings were (until Series 3) only nominal, with some models having more than one power option
For the "numbers only" (for want of a better description), they are as follows:
Before the decimal point = the gross vehicle mass in tonnes
After the decimal point = ideally, the output of the motor in bhp.
UOCL = (Germanic equivalent unknown) Underfloor chassis
HOCL = Hochboden Linienbus (high-floor rear engined buses)
HOCLN = Hochboden Linienbus - Nachlaufachse (high-floor /dd coach tri axle)
HGOCL = Hochboden Gelenkbusse (high-floor articulate)
FOCL = (Germanic equivalent unknown) front engined chassis
So, a 16.240 UOCL is a heavy duty chassis of 16 tonnes GVM and of an output of 240bhp.
Leyland used abbrieviations for their chassis designations over time, and these are the following:
O = overseas (export version for 8 ft wide body)
P = passenger
S = single deck
D = double deck
U = underfloor
R = rear engine, blank for front engine
E = export
RT = Royal Tiger
The first Royal Tigers in Sydney were OPSU1,
but the second batch were coded ERT
The Tiger Cub was coded PSUC
then later RTC
VK = Viking
TRC = Tiger
ON = Olympian
AN = Atlantean
There was a mix of numbers after the abbreviations, some denoted suspension or other mechanical differences, others included the motor used.
AN68 = Atlantean with a 0.680 engine
VK41 = Front engined Viking
VK45 = Rear engined Viking
ONTL11/2RH = Olympian with a TL11 motor and hydracyclic semi-automatic gearbox
ONCL10/2RZ4 = Olympian with a Cummins L10 and a 4 speed ZF 4HP 500 gearbox.
TRL11/2RZ6 = Tiger with a Leyland L11 engine and a 6 speed ZF manual gearbox.
TRCLXB/2R = Tiger with a Gardner 6LXB motor
OPD2 = Overseas Passenger Double-deck
PSUR = Passenger Single-deck Underfloor Rear engined (ie. A Leyland Panther)
There are all sorts of combinations as well, such as for Leopards, where there is the PSU1A/2R, and all sorts or A/R combinations. These are tabulated below (information from http://www.leylandleopard.co.uk/
) in order of year, model and changes:
1961 PSU3 (11m) = Original specification
1965 PSU4 (10m) = Original specification
1968 PSU3A (11m) - PSU4A (10m) = Rationalised Pneumocyclic gearbox
The following PSU classifications are in order of 11m, 10m, and 12m chassis:
1970/1 PSU3B - PSU4B - PSU5 = Maudslay rear axle in place of Eaton; revised brake linings
1974 PSU3C - PSU4C - PSU5A = Modified air braking system, engine mountings and pedal location
1977 PSU3D - PSU4D - PSU5B = Uprated springs optional (standard on PSU5B), close ratio gearbox
1978 PSU3E - PSU4E - PSU5C = Relocated air tanks
1979 PSU3F - PSU4F - PSU5D = Various optional features now standard, new tyres, springs, wide ratio gearbox
1981 PSU3G - PSU4G - PSU5E = Rationalised engine
The suffix after the slash is designated as follows:
/1R = Synchromesh Bus
/2R = Pneumocyclic Bus
/3R = Synchromesh Coach
/4R = Pneumocyclic Coach
/5R = ZF Synchromesh Coach (from 1979)
R = Right hand drive
L = Left hand drive
This means that it could be /1L, /2L, etc.
Therefore, you can have a PSU3C/4R, like m/o 054 at transit First, which is was Leyland Leopard with an 11m chassis, modified air braking system, engine mountings and pedal location, and in it's previous life, was a RHD coach with a pnuemocyclical gearbox. Of course, the classification cannot be changed to reflect its role now as a pnuemocyclic bus (a /2R). A change in the order for Mk II Leopards was that they are a PSU3A/2R (with a rationalised gearbox, 11m chassis), while the Mk I's were PSU3/2R (original spec, 11m chassis).
This is as much as I can help, I hope it enlightens anyone who isn't sure, and please correct me where needed.
Gotta go, before my brain explodes, and my eyes dry out from looking at the computer monitor for too long
Last edited by Windy on Fri Jun 29, 2007 10:59 am, edited 15 times in total.