Page 5 of 8

Posted: Tue Jun 02, 2015 11:37 pm
by dewintondave
I don't want to have to remove the cooling hood when topping up the fuel so I've mounted an extension filler pipe on the right-hand side behind the buffer beam.

Image

Image

Some people ask if I have any drawings, well here's a circuit diagram I drew to work out the electrics. I didn't use the switch in the blower wiring in the end.

Image

Posted: Wed Jun 03, 2015 4:20 am
by Keith S
This is pretty much the best locomotive build I have ever seen.

Posted: Wed Jun 03, 2015 8:58 am
by Maple
This project is brilliant, i would love to give it a try one day. However still working on wild rose and idris. True Insperation

Posted: Thu Jun 04, 2015 5:32 am
by dewintondave
Thank you guys.

I've just finalised the filler. The pipe needed holding place to resist the filler connection force.

Image

Image

Posted: Sat Jun 06, 2015 3:07 am
by dewintondave
At last we had a break from the rain and I was able to test the cooling fans for the first time in use. The fans appear to be effective. After the run, (the tankful was consumed after 17 minutes) fans were left running for a while, and the cylinder head was just warm. The bonnet / hood rattled at times. From analysis after the run, I found that the motor was running 30% too fast, and the loco was doing about 6.5 scale MPH.


Posted: Sun Jun 14, 2015 5:03 am
by dewintondave
A while ago I bought a small LED torch/Flashlight on eBay. I thought I'd use it for the headlight, but it was rather small. I've just finished converting it to use as the rear light for shunting and reverse running.

Here's what I bought:

Image

I'm just using the LED, reflector, and bezel. This was a single AA cell torch. Interestingly there is a small PCBA that steps up the voltage to 3.7 V. I'm not going to use it as I'll be using the blowers 12 V supply with a step-down module.

Image

Image

This light is very bright, and a cold white. But it responds well to the PWM dimmer. The wiring still needs arranging.

Image

Posted: Sun Jun 14, 2015 9:42 pm
by Dannypenguin
Awesome build :thumbright:

Posted: Thu Jul 02, 2015 10:33 am
by dewintondave
Dannypenguin:111545 wrote:Awesome build :thumbright:
Thanks mate.

---

Finally, I have started painting. I bought a benchtop convection oven, on special offer, to bake the paint after initial drying. The setting I'm using is 90 deg C for one hour. The paint is coming out nice and hard.

Image

Image

Because I'm not using an undercoat, the red is coming out quite a nice dark shade

Posted: Sat Jul 04, 2015 4:31 am
by dewintondave
Image

Posted: Sat Jul 04, 2015 11:34 am
by Maple
im getting very jealous Dave. Looks like a cracking loco. Enjoy Painting :)

Posted: Sat Jul 04, 2015 3:28 pm
by mike mott
I just finished reading through your whole build. I am really impressed by your work in experimenting to find the right set up for the drive train. The gear cutting work looks very nice.

The end results look satisfying indeed, a good looking loco all round.

Mike

Posted: Sun Jul 12, 2015 9:16 am
by dewintondave
Thank you guys.

I've finished the bonnet and cab. The electrics are all reassembled. I'm putting all the various bits and pieces all over the place, I've got some shelves.

Image

I like the brass / red contrast

Image

I've just removed the footplate for painting, it's going to be black

Posted: Sun Jul 12, 2015 7:59 pm
by mike mott
I am looking forward to seeing it all put back together, the brass and red are a great combination.

Mike

Posted: Mon Jul 20, 2015 11:29 am
by dewintondave
I've started to dismantle the chassis one side frame at a time so as not to disturb everything too much. I'm only going to paint the outside of the frames. First thing is to fill all those excess holes that were used in the earlier set-ups. I've used small slices of 1/8" K&S brass bar to fill the holes and slots, soft soldering over them and smoothing it off.

Image

Image

Posted: Sun Jul 26, 2015 4:41 am
by dewintondave
Here's the reassembled chassis on the surface plate for quartering of the cranks.

Image

Posted: Sun Jul 26, 2015 11:11 am
by Dr. Bond of the DVLR
Everything is coming together. It looks very smart indeed!

Posted: Mon Jul 27, 2015 4:50 am
by Keith S
How long after spraying do you bake the parts? Do you wait until they are dry to the touch at room temperature?

Posted: Mon Jul 27, 2015 8:39 am
by dewintondave
Keith S:112246 wrote:How long after spraying do you bake the parts? Do you wait until they are dry to the touch at room temperature?
That's it, when it's touch dry. It's a smelly process, especially the black paint - toluene, the black paint was very fast to be touch dry. I used engine block spray paint

Posted: Sat Aug 01, 2015 9:54 am
by dewintondave
It is finished!

This project was started in the latter part of 2012. With the test chassis running in early 2013.

Image

Image

The basic dimensions of the loco are:

340 mm long (over the couplings) x 150 mm wide x 240 mm high from railhead to top of the exhaust stack. Weight: over 5 Kg

Posted: Sat Aug 01, 2015 10:06 am
by philipy
That looks fantastic, Dave.
Congratulations.
I'm in awe and envy of your abilities.