Gauge 1 ‘project’

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-steves-
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Re: Gauge 1 ‘project’

Post by -steves- » Fri Jan 08, 2021 1:13 pm

Jimmyb wrote: Fri Jan 08, 2021 10:45 am
Garethh wrote: Fri Jan 08, 2021 7:27 am
Thanks for the kind words, it’s far from perfect though, I think the photos are flattering!
Gareth, I do think you are "under selling" yourself, there is some very fine workmanship there.
Totally agreee :thumbup:
The buck stops here .......

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artfull dodger
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Re: Gauge 1 ‘project’

Post by artfull dodger » Sat Jan 09, 2021 6:48 am

Here is a pic of her on the bench, railway is mostly mud and trackwork needs some leveling and joints unkinked for gauge one running. Mine will be getting SDJR transfers from Barrets in the UK, so its in the deep blue color now. I am planning to get a complete new smoke box assembly as this one is all soldered and I want the front cover removable for sealing things, missing the petticoat so she is not drafting as well as needed and lacks the smokebox door casting. A friend has the shop tools, so since I have the book, I may make the attempt with his help to remake the cylinder block/crosshead tube assembly to a higher standard than she has now. I will see how she runs when spring weather arrives. My boiler bands are just black zip ties right now, need to make up proper brass ones but this works for now. Missing the ladders on the engine and tender still as well, gotta make those as well.
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Re: Gauge 1 ‘project’

Post by Garethh » Sat Jan 09, 2021 4:35 pm

I appreciate the positive words, just trying to not get carried away until I know it at least runs on air, if it doesn’t work then it doesn’t matter how pretty it looks!
artfull dodger wrote: Sat Jan 09, 2021 6:48 am Here is a pic of her on the bench, railway is mostly mud and trackwork needs some leveling and joints unkinked for gauge one running. Mine will be getting SDJR transfers from Barrets in the UK, so its in the deep blue color now. I am planning to get a complete new smoke box assembly as this one is all soldered and I want the front cover removable for sealing things, missing the petticoat so she is not drafting as well as needed and lacks the smokebox door casting. A friend has the shop tools, so since I have the book, I may make the attempt with his help to remake the cylinder block/crosshead tube assembly to a higher standard than she has now. I will see how she runs when spring weather arrives. My boiler bands are just black zip ties right now, need to make up proper brass ones but this works for now. Missing the ladders on the engine and tender still as well, gotta make those as well.
Image
Thanks for sharing the photo, nice to see a finished one and it’ll definitely look the part in sdjr blue, as far as I’m aware that’s the only prototype colour that’s not black!

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Re: Gauge 1 ‘project’

Post by ge_rik » Sat Jan 09, 2021 6:41 pm

Did I detect hi-vis trousers in one of those photos?

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Re: Gauge 1 ‘project’

Post by Garethh » Sun Jan 10, 2021 7:58 am

ge_rik wrote: Sat Jan 09, 2021 6:41 pm Did I detect hi-vis trousers in one of those photos?

Rik
You did, I rent take finished bits to work with me and bolt them together if I get a bit of free time!

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Re: Gauge 1 ‘project’

Post by Garethh » Wed Jan 20, 2021 7:56 am

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After much messing around with clamps I finally worked up the courage to drill and tap the cylinder to bolt into the frame, the trunk guide required some filing to clear the con rod but that seems to be normal on these. Just the eccentric strap to go and should be ready for a test on air!

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Re: Gauge 1 ‘project’

Post by Garethh » Tue Jan 26, 2021 7:31 pm



Found some time to finish off the eccentric strap and do a first test on air. Think I need to play with the timing a little bit dead chuffed it even runs!

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Re: Gauge 1 ‘project’

Post by -steves- » Tue Jan 26, 2021 7:36 pm

Very nice, it's always a good feeling that first air run :thumbup:
The buck stops here .......

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Re: Gauge 1 ‘project’

Post by Jimmyb » Wed Jan 27, 2021 9:31 am

Very impressive, you should be very pleased with yourself, I know I would be if i had got this far :thumbright:

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Re: Gauge 1 ‘project’

Post by Garethh » Sat Jan 30, 2021 5:48 am

Ended up with a bit of surprise free time, so got the burner and lubricator and their associated brackets done. With the burner I deviated from the plans slightly and made a threaded brass insert which was silver soldered into the copper pipe rather than threading the copper pipe directly as that seemed like a recipe for future problems.
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Re: Gauge 1 ‘project’

Post by Garethh » Sat Jan 30, 2021 5:50 am

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For some reason it would only let me put 2 photos in the previous post!

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Re: Gauge 1 ‘project’

Post by Garethh » Wed Feb 03, 2021 9:18 am

I’ve started working on the axle pump and have gone about the body in a slightly different way so thought I’d post it in case it was of use to someone. The book calls for 2 pieces of 1/4” round soldered together at right angles
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I don’t have access to any milling equipment at the moment so was a bit concerned about getting an accurate mitre on the joining piece to ensure it sat square at 90, and then figured clamping it central while soldering would be a faff as well. After a bit of head scratching I decided to make the threaded part of the body first, from brass hex, so I drilled and then reamed a 1/4” hole through the middle with the center of the hole the right distance from the faced end of the hex. The hex was the turned to size and threaded, leaving a little extra meat to allow for the hole:
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The upright part of the body was then turned as per the drawing but to be a tight push fit in the 1/4” hole, this meant silversoldering in the correct place was easy:

Going to have to continue in another post as it won’t let me upload another photo...

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Re: Gauge 1 ‘project’

Post by Garethh » Wed Feb 03, 2021 9:22 am

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The hex rod was then put back in the lathe and the bores drilled, meaning everything is nice and concentric, after which the assembly was cut off, screwed into another bit of hex threaded 1/4 x 40 and faced off nice and neat. Seems to have worked nicely thus far, hopefully my method is of use to someone!
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Re: Gauge 1 ‘project’

Post by Garethh » Tue Feb 09, 2021 12:04 pm

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Axle pump done with its ram and banjos, was a little unsure how much movement the stainless balls were supposed to have, but shoved it in a cup of water and pumped the piston and it it moves water, so assume I guessed right!

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Re: Gauge 1 ‘project’

Post by Garethh » Sat Feb 20, 2021 8:52 am

Axle pump is now fitted with its eccentric and strap
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And I’m gradually working through boiler fittings, clack valve with bypass, the functional part of the dome, and the regulator/blower valve:
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Decided to use hex for the regulator rather than round as it’s easier to drill connecting holes in

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Re: Gauge 1 ‘project’

Post by Garethh » Tue Mar 09, 2021 7:31 am

Progress has slowed a little due to time and money constraints, still moving along though

Flue tube made up and barrel trimmed to length:
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Sandboxes which will be used to mount the running boards
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Re: Gauge 1 ‘project’

Post by Garethh » Sat Mar 27, 2021 8:17 am

Bit of progress with the boiler, firebox assembly is soldered up and barrel prepped to accept it, just need to find some time to start soldering them up! I got the plate work for the boiler laser cut to save some time, ie, smokebox tube plate, backhead and throat plate, have some spares if anyone’s interested, would be easily adaptable for other boilers of a similar size.
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Re: Gauge 1 ‘project’

Post by Keith S » Sat Mar 27, 2021 3:15 pm

I have a silly question: what are the holes in the flue-tube? I speculate they increase heating surface by allowing water to flow through the flue itself? I've never seen this before.

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Re: Gauge 1 ‘project’

Post by Garethh » Sun Mar 28, 2021 6:56 am

Keith, I’m not going to pretend to be knowledgeable on the subject, I just followed the drawings! I would assume the idea is to increase the surface area available for heating water though!

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Re: Gauge 1 ‘project’

Post by dewintondave » Mon Mar 29, 2021 1:34 am

Lovely boiler!
Best wishes,
Dave

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