!!

Not Registered?

Welcome!  Please register to view all of the new posts and forum boards - some of which are hidden to guests.  After registering and gaining 10 posts you will be able to sell and buy items on our N'porium.

If you have any problems registering, then please check your spam filter before emailing us.  Hotmail users seem to find their emails in the Junk folder.


Thanks for reading,
The NGF Staff.

Author Topic: Bachmann Class 40  (Read 27707 times)

0 Members and 1 Guest are viewing this topic.

Offline Shropshire Lad

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 112
  • Country: gb
    • Awards
Re: Bachmann Class 40
« Reply #165 on: December 20, 2017, 04:46:15 PM »
The factory sound fitted class 40s have arrived at my local dealer so it's a Merry Christmas for those who have been waiting patiently.

Offline NeMo

  • Trade Count: (+3)
  • Full Member
  • ***
  • N Gauge Society Number: 23720
  • Posts: 2522
  • Country: gb
    • Awards
Re: Bachmann Class 40
« Reply #166 on: December 20, 2017, 05:18:34 PM »
40s were not in the Deltic class for speed, so I'd be happy with 85. Wasn't their max 90?

90 MPH. On a good day. Downhill. With a light load.

Cheers, NeMo

In their defence, their maximum power was something like 60-80% that of a Coronation Pacific, so needless to say, their record on heavy expresses isn't chock full of lively performances! But they were at least consistent, and runs in the 70-80 MPH bracket were maintained without trouble.
NGS Journal Editor

Offline Railwaygun

  • Moderator
  • Trade Count: (+2)
  • Full Member
  • ****
  • N Gauge Society Number: 21889
  • Posts: 4680
  • Country: gb
  • Gender: Male
  • Keen on Military Rail, Kato Unitrack, & Z21/DCC
    • Railwaygun, Armoured train and Military Railway group
    • Awards
Re: Bachmann Class 40
« Reply #167 on: December 23, 2017, 03:01:24 PM »
see thread re difficulties in removing Class 40 body

http://www.ngaugeforum.co.uk/SMFN/index.php?topic=39617.msg478231#msg478231
This has been a public service announcement
It may contain alternative facts

Caveat lector

The largest Railwaygun, Armoured Train & Military Rail group in the world!
https://groups.io/g/railwaygun/topics

My Military Rail Pinterest area
https://uk.pinterest.com/NDRobotnik/

10mm / N armour
https://www.pinterest.co.uk/pin/350436414753212039/

Motto: Semper ubi, sub ubi

Offline Rma

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 46
  • Country: gb
    • Awards
Re: Bachmann Class 40
« Reply #168 on: December 28, 2017, 09:38:16 AM »
Can anyone give any advice on the bag of bits? Frost grills only for use in cold weather I’m guessing?! But what about the different vent covers? Period specific? Thanks!

Offline NeMo

  • Trade Count: (+3)
  • Full Member
  • ***
  • N Gauge Society Number: 23720
  • Posts: 2522
  • Country: gb
    • Awards
Re: Bachmann Class 40
« Reply #169 on: December 28, 2017, 12:15:42 PM »
Can anyone give any advice on the bag of bits? Frost grills only for use in cold weather I’m guessing?! But what about the different vent covers? Period specific? Thanks!

This is one of those situations where you model a specific loco rather than the whole class. Some BR classes were pretty homogenous (the 'Westerns' for example) but others were ridiculously variegated (like the Class 25s) and there really aren't any hard-and-fast rules that apply in every case.

Last time I was at the Waterstones in Bloomsbury I picked up a copy of 'Diesels in Depth - Class 40' for a few quid, in the remainders section of the transport books. I'm sure if you hunt around you can get a copy of this nicely illustrated little book (MDS Books has it for £7, for example). While David Clarke's books do tend to dwell on livery details and skim lightly over operations, they are well researched with a decent amount of text. Definitely worth buying if you want an inexpensive summary of the class before you start gluing bits onto your loco!

Cheers, NeMo
NGS Journal Editor

Offline davidinyork

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 812
  • Country: gb
    • Awards
Re: Bachmann Class 40
« Reply #170 on: December 28, 2017, 12:19:28 PM »
This is one of those situations where you model a specific loco rather than the whole class. Some BR classes were pretty homogenous (the 'Westerns' for example) but others were ridiculously variegated (like the Class 25s) and there really aren't any hard-and-fast rules that apply in every case.

Try Class 47s for a really massive number of variations!

Offline Rma

  • Trade Count: (0)
  • Full Member
  • ***
  • Posts: 46
  • Country: gb
    • Awards
Re: Bachmann Class 40
« Reply #171 on: December 28, 2017, 02:34:22 PM »
Lindi, NeMo - thanks very much :)

Offline honestjudge

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 16285
  • Posts: 53
  • Country: gb
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #172 on: December 28, 2017, 10:36:44 PM »
Just finished putting my 40141 through its running in stint and had a play with most of its functions. 

Its a stunning model. Everything seems to work and could not see a problem with the speed. Happy days :)

Offline bluedepot

  • Trade Count: (+8)
  • Full Member
  • ***
  • Posts: 2598
  • Country: 00
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #173 on: December 29, 2017, 10:55:57 PM »
some footage of driver training / familiarisation with new traction type...



Offline Dr Al

  • Trade Count: (+49)
  • Full Member
  • ***
  • Posts: 4671
  • Country: gb
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #174 on: December 30, 2017, 12:30:47 AM »
Some further thoughts on class 40s, after now living with two for a small amount of time.

Top speed:-

I've found this can be increased by checking for grease in the drivetrain, and that the pickups are not excessively tight on the wheel backs.

I cleaned all the grease off the bogies on my blue one and reset a couple of the pickups and the top speed immediately jumped up, and the current consumption dropped by 15-20mA - a significant amount when it was running on just under 100mA before doing this. I'll need to go back and do the green one now too.

Body height:-

The body can be lowered a smidgen (~15thou) very easily. It sits on 4 posts that rise out of the mazak chassis block sides. Filing a little off these, and removing the screwed on plastic chassis ends, and reattaching them with small washers between the plates and the chassis block allows the body to be pulled down by the washer thickness, and still clip on to the nose ends. This does bring the speaker right down against the PCB, so dropping it further (another 10thou would be desirable) will need further thought - I think it may be possible to remove the speaker, remove some of the mounting rectangle for it and refit to leave the full functionality present. Not been brave enough to pull the speaker out yet though! If anyone has removed the speaker or intends to, I'd be interested to see what's under it.

Cheers,
Alan
Quote from: Roy L S
If Dr Al is online he may be able to provide a more comprehensive answer.

“We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.” – Dr. Carl Sagan

Offline Pete @ EGLM

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 7447
  • Posts: 210
  • Country: gb
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #175 on: December 30, 2017, 12:34:32 AM »
The speaker is held in by a not so sticky pad.  It fell out of one of mine!

Pete @ EGLM

Offline Dr Al

  • Trade Count: (+49)
  • Full Member
  • ***
  • Posts: 4671
  • Country: gb
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #176 on: December 30, 2017, 12:36:07 AM »
Interesting - do you recall at all the detail of what was under it in the body?

Cheers,
Alan
Quote from: Roy L S
If Dr Al is online he may be able to provide a more comprehensive answer.

“We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.” – Dr. Carl Sagan

Offline Pete @ EGLM

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 7447
  • Posts: 210
  • Country: gb
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #177 on: December 30, 2017, 12:40:39 AM »
There is a frame moulded in the roof.  The sticky pad is around the edge of the speaker and sits in the frame.

Regards

Pete @ EGLM

Offline Dr Al

  • Trade Count: (+49)
  • Full Member
  • ***
  • Posts: 4671
  • Country: gb
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #178 on: December 30, 2017, 12:52:16 AM »
Thanks - do you think it looked possible to remove ~1/2 mm or so from the height of that frame and then refit the speaker perchance? Or was the speaker hard up against the curve of the roof (doesn't look like it would be).

Thanks,
Alan
Quote from: Roy L S
If Dr Al is online he may be able to provide a more comprehensive answer.

“We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.” – Dr. Carl Sagan

Offline Pete @ EGLM

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 7447
  • Posts: 210
  • Country: gb
  • Gender: Male
    • Awards
Re: Bachmann Class 40
« Reply #179 on: December 30, 2017, 01:12:33 AM »
It should be possible, I've taken a photo, but strong drink has been taken this evening and it's always such a faff to put photos on here!  I'll post it tomorrow

Pete @ EGLM

 

Please Support Us!
June Goal: £55.00
Due Date: Jun 30
Total Receipts: £60.00
Above Goal: £5.00
Site Currency: GBP
109% 
June Donations


Advertise Here
anything