Model Railway Forum banner
1 - 1 of 1 Posts

·
Administrator
Joined
·
261 Posts


Bachmann 9F

Class 9F 2-10-0 standard 92192 with double chimney
and BR1F tender in BR black with late crest

Review & DCC
Decoder installation -
by Doug Teggin


Bachmann Class
9F - Model Info


Three 9F models have been released. They have been eagerly
awaited and at the time of writing are being snapped up rapidly. 92220
"Evening Star" seems to be the most popular at it was the last
of the BR Steam locos and is well known.

Model # 32-850

Class 9F standard 92220 "Evening Star" with
BR1G tender in BR green with late crest.

Model # 32-851

Class 9F standard 92192 with double chimney and BR1F tender in BR black with
late crest.

Model # 32-852

Class 9F standard 92116 with single chimney and BR1C tender in BR black with
early emblem.





Train Wheel Vehicle Steam engine Rolling stock


The model I chose
is the # 32-851 Class 9F standard 92192
with double chimney. It has a 'workhorse' look and feel. Dirt
and grime will add to the charm of this powerful loco. It can be put to good use
hauling freight around the layout.

It was built as an
exercise in function over form, but ends up looking strong and sleek. It has a
job to do and there is no question that it will be carried out as required.

The detail kit was
added. It comes with some optional parts: cylinder steam pipes, hoses and front
loco steps. These would interfere with coupling from the front and running on
tight radius curves with the coupling hook attached.





Train Wheel Vehicle Rolling stock Steam engine




Train Wheel Vehicle Rolling stock Steam engine




Train Rolling stock Mode of transport Rolling Railway


This loco has a good amount of
detail. I imagine that the high retail price of this loco has something to do
with the intricate chassis and level of detail on the loco itself. It must have
taken quite a while for some dextrous hands to assemble this model.





Train Motor vehicle Automotive tire Rolling Gas




Train Wheel Rolling stock Locomotive Rolling


We have been spoiled by Hornby
with their detailed cabs, so we feel slightly let down when we come up close to
the Bachmann cab details. I honestly don't mind, but a detailed cab ads 'wow'
factor to any model.

The tender on this particular model comes with a full load of
coal. The tender coupling arm has two positions to attach the tender which allow
a close couple and another a little further apart for tighter radius cornering.
There is no electrical pickup from the tender.

DCC
Decoder Installation


The choice of decoder is the
Lenz Gold-JST Silent-Back EMF DCC Decoder
(Article Nr. 10433).

The decoder can handle a

continuous
current draw of 1.0 Amp
with a peak
current for short periods of 1,8 A. Some of the
main features are:

  • Super smooth and
    silent high frequency back-EMF motor control.
  • Supports the industry
    proposed enhancements to the NMRA DCC
  • Bidirectional data
    communication RPs
  • USP with optional
    power module for operation on dirty track
  • Asymmetrical DCC
    support including directional stopping
  • Adjustable precision
    stopping control
  • Low speed gear for
    switching operations
  • Motor and function
    outputs protected
  • Four function outputs
    rated at 200mA each with advanced function mapping
  • Directional or
    independent lighting with dimming and special effects.
  • Support for Advanced
    Consist Control and Extended Addressing
  • Support for
    programming on the mainline (operations mode programming)




Passive circuit component Circuit component Resistor Hardware programmer Microcontroller



Train Rolling stock Rectangle Rolling Vehicle

Above, the
Lenz Gold-JST Silent-Back EMF DCC Decoder 10433.
Note the harness with the 8-pin NEM-plug that fits
the NEM 652 (NMRA Medium) socket.


The model with the body
removed showing the ballast over the motor.



Circuit component Passive circuit component Electronic engineering Electronic component Automotive wheel system



Electrical wiring Motor vehicle Gas Bumper Automotive exterior

The NEM 652
socket with the blanking plug removed. Note the capacitor that has to be
snipped off.


Ballast removed showing the
motor and brass flywheel. Very compact and efficient. Note: two more
capacitors that should be snipped off to ensure trouble free DCC
operation.



Musical instrument Wood Body jewelry Art Jewellery



Passive circuit component Circuit component Hardware programmer Electrical wiring Electronic component

One of the capacitors and
the blanking plug.


The decoder fitted. Orange
wire to pin number 1.



Material property Gun accessory Everyday carry Rectangle Air gun



Passive circuit component Circuit component Hardware programmer Electrical wiring Computer hardware

The decoder fits into the
boiler well, but the Lenz decoder is too wide to fit in to the opening if
it is secured flat on to the chassis. It has to be secured to the inside
of the boiler using double-sided sticky sponge.


Decoder secure. Fold the
wires between the decoder and the NEM plug and replace the body to the
chassis. It fits well with no problems.

DCC CV Settings
for the Class 9F (92192)
Adr2192Long loco address
CV13Default Address
CV20Minimum Speed (V Min at
step 1)
CV36Acceleration delay
(0-15)
CV45Brake Delay (0-15)
CV5200Max speed (V High)
CV646Acceleration Curve (V
Mid)
CV17200Long address Hi bit
CV18144Long address Lo bit
CV2938Decoder Configuration


The rest of the CV's are left
untouched (factory default).


- July 2006


Update
(August 2006)

I did have a
problem with the loco, a broken drive gear, but it arrived like that and
was easy to fix. I've documented the repair on the forum

here
.

So now I have run the loco
up and down my new track that is slowly being built. I spent about an hour
gently running it up and down my 1:40 gradient. I added some load (1, 2, 3
& 4 wagons with loads of screws) and it went very
well. There was a bit of juddering, but I suppose it was more to do with
all the man-handled running gear being pushed around whilst I was taking
the thing apart and working on it. I gave it an oil and it went much
better. I noticed that the loco by itself is very smooth. Add the tender
and it waggles a bit. Perhaps the tender has an axel that is not 100%
straight. The loco managed to out pull a Hornby A4, but still failed to
match the paired up Class 20's which is understandable as they do have 2
bigger motors, bigger fly-wheels and all-wheel-drive. The 9F uses a smaller,
less powerful motor - obviously so that
it fits into the body of the loco.

Overall
impression:
A great looking loco. Runs well and is an efficient
work-horse for any late period steam or transition layout. This has been
an eagerly awaited model. And I can't remember a model getting so much
press on it's release. I'm sure Bachmann are happy and hopefully they will
continue to produce exciting models such as this.


Train Rolling stock Electricity Rolling Telephony




All text, model photos & graphics ©2006
Doug Teggin - All rights reserved.


[TR][TD]



Train Wheel Vehicle Rolling stock Rolling


Click images for larger
versions


[/TD]
[/TR][TR][TD]

Prototype Info

After experience gained
with the War Department locomotives during the Second World War, the
newly formed British Railways under R.A. Riddles opted for a 2-10-0 heavy
freight locomotive as part of its range of Standard
locomotive classes.

Design work
commenced at Brighton and Derby in 1951. A total of 251 locomotives
were ordered. 10 of
these, 92020-92029, were a different design known as Franco-Costi
with an additional boiler that ran
under the main boiler, taking the firebox gases back from the smokebox to
a chimney on the right side of the locomotive forward of the cab.
Crew built 198 and Swindon 53, with construction spread over several
batches. Numbered 92000-92250.

[/TD]
[TD]



Train Land vehicle Vehicle Wheel Rolling stock


Class 9F - Photo ©


Paul Pettitt
[/TD]
[/TR][TR][TD]

After the publication of the "Modernisation of British
Railways" in 1955, the emphasis changed towards
diesel and electric traction. Steam locomotive
construction continued and in 1960 the last 9F and the last steam
locomotive to be built for British Railways emerged from Swindon Works. As
befitted such an occasion this locomotive, No. 92220, was the only one not
to carry unlined black. Instead it was turned out in the lined passenger
green livery and named 'Evening Star'.

Although officially
freight locomotives; they could also be found on passenger trains,
particularly over steep graded lines such as the famous Somerset & Dorset
line between Bath Green Park and Bournemouth West.
92220 'Evening Star'
operated the Capital's United Express between Cardiff and London in July
1960, reaching 90mph. Concerns about the durability of the locomotive
brought this to a rapid end.

The first 9F was
withdrawn in May 1964 and by June 1968 the last of them had been laid
aside. Fortunately Nine 9Fs have survived, these being

92134
,

92203
Black Prince,

92207
,

92212
,

92214
,

92219
,

92220
Evening Star,

92240
and

92245
.

[/TD]
[/TR]​


[TD]
[/TD]
 
1 - 1 of 1 Posts
Top