Paul's workbench

This forum is for the discussion of railway modelling of the LNER and its constituent companies.

Moderators: 52D, Rlangham, Atlantic 3279, Blink Bonny, Saint Johnstoun, richard, Tom F

nzpaul
GER D14 4-4-0 'Claud Hamilton'
Posts: 336
Joined: Sat Sep 24, 2011 11:48 am
Location: New Zealand

Re: Paul's workbench

Post by nzpaul » Wed Jan 22, 2020 1:40 am

Hi again Paul
The O4 chassis is probably one of the easiest to sort out for pickup adjustment. Remove the 3 screws retaining the bottom plate and carefully remove it and keep an eye on the sanding pipes between the 2nd and 3rd axles. the pickups are attached to the plate and you can simply adjust as required, reassemble and that's it. The pickups have a springy connection to the chassis that means there's no wires to break.
BachO4.jpg
I've also included this photo showing the pointless capacitors on the motor, they serve the purpose of moving rapidly changing dc voltage (collapsing back emf from the armature) to a grounding point, problem is that DCC decoders and feedback controllers need to measure that very voltage to sort out what the motor is up to and control it properly, so if left in place they can cause some comical events when on DCC. Plain old resistor or transistor based controllers wont show the problem.
BachO4_1.jpg
Cheers
Paul
Last edited by nzpaul on Wed Jan 22, 2020 8:25 pm, edited 1 time in total.

Paul_sterling
GNSR D40 4-4-0
Posts: 212
Joined: Fri May 10, 2013 12:50 pm
Location: Durham

Re: Paul's workbench

Post by Paul_sterling » Wed Jan 22, 2020 9:07 am

Brilliant, thanks for that hugely informative post Paul. much appreciated.

The capacitors should be fine to leave in on mine, as I changed controllers late last year from HM2000/HM4000 (which are PWM), to Morley Vector 3 Crawlers, which are "conventional" controllers. The reason being was me rather than the railway, I couldn't stand the transformer buzz, and when the controllers were operated there was a high pitched "whine" from the controller (I believe something to do with the PWM switching range falling inside of the top end of my audible range). Nevertheless, the Q1 (and the Q4) used to lump along on the HM2000 in a surging motion, whereas they don't do this on the Morley.

I will keep note of the pickup plate adjustment, and check them over at the first opportunity.

Thanks once again, that post was very helpful.

Cheers. Paul.

nzpaul
GER D14 4-4-0 'Claud Hamilton'
Posts: 336
Joined: Sat Sep 24, 2011 11:48 am
Location: New Zealand

Re: Paul's workbench

Post by nzpaul » Sat Jan 25, 2020 5:50 am

Hi All
A couple of projects creeping towards completion.
Graeme's EB1 now has a completed pantograph and is wearing its black unlined livery, only a few parts left to fit then finish the paint job and it can head home to Graeme's layout.
EB1_17.jpg
The stramlined B17 has now reached the nearly done stage as well, this has been more of a painting exercise as anything else, if nothing else it has provided good practice for the B3 that I'll be starting on later this year (I hope), not to mention the half done P2.
B17_6.jpg
Cheers
Paul

Graeme Leary
LNER Thompson B1 4-6-0 'Antelope'
Posts: 631
Joined: Fri Oct 28, 2011 9:43 pm

Re: Paul's workbench

Post by Graeme Leary » Mon Jan 27, 2020 8:07 pm

Tank full, engine quietly idling ready for the call Paul. Looks brilliant and again, very many thanks.

Graeme

nzpaul
GER D14 4-4-0 'Claud Hamilton'
Posts: 336
Joined: Sat Sep 24, 2011 11:48 am
Location: New Zealand

Re: Paul's workbench

Post by nzpaul » Sat Feb 22, 2020 3:40 am

Hi All
Graeme's EB1 is now complete and ready for action, I have to admit I'm quite looking forward to seeing Graeme's face when he opens the box, assuming of course that he likes it and that statement doesn't come back to haunt me.
Also finished the Streamlined B17, for something I really only bought for the wheels and motor/gearbox to use elsewhere, it's kind of grown on me. I'm not a huge fan of streamliners, I much prefer the more ordinary shaped engines, but the B17 doesn't look too bad, in its own stumpy kind of way.
Moving on to one of Paul's (sterlings) 3D printed Thomson Q1 next, looks like it should be fun.
EB1_19.jpg
B17_8.jpg
Cheers
Paul

Graeme Leary
LNER Thompson B1 4-6-0 'Antelope'
Posts: 631
Joined: Fri Oct 28, 2011 9:43 pm

Re: Paul's workbench

Post by Graeme Leary » Sat Feb 22, 2020 5:55 am

There will be no doubts about me liking it Paul. The pm and video shot you sent of it running has me 100% satisfied, now just to work out a date to pick it up! (Maybe you could post the video of it working on the forum).
Graeme

nzpaul
GER D14 4-4-0 'Claud Hamilton'
Posts: 336
Joined: Sat Sep 24, 2011 11:48 am
Location: New Zealand

Re: Paul's workbench

Post by nzpaul » Sat Feb 22, 2020 8:34 am

Hi All
Now that Graeme has seen it, here's a sort clip of the EB1 running up the spiral on my layout during testing and set up of the DCC decoder. Sorry it's so short but the rest of the clips were out of focus and the lighting was messing with the camera.
[https://www.youtube.com/watch?v=oU4ffMnf4V8][/url]

Cheers
Paul

Post Reply