John57sharp
Western Thunderer
Get well soon Simon, although I'm enjoying the blast of progress
John
John
simond
Western Thunderer
A few minutes of lunchbreak left. 1368 to do list
Brakes - hangers and frame brackets are 3DP, Slaters shoes in the box, along with some cast cross beams.
Brake cylinder 3DP done, but will need to be modified to fit with the new fixing screw for the cab steps mounting plate.
Brake cross shaft - model required to 3DP
Brake pull rods - to make
Sandboxes, Models done, will modify and print when steps are fitted
Cab steps - new plate required one side, steps present and correct, needs assembly to cab steps mounting plate
Rivetted angle across front of frames between cylinders - to reprint a bit thicker
Drain cocks - castings in the box
Vac pump - casting in the box
Vac pump spindle - to make
Weird bit of frame extension under bunker - to model and 3DP
Decoder mounting
Speaker enclosure - design and 3DP
Strip, clean, paint, reassemble, oil and test.
Brakes - hangers and frame brackets are 3DP, Slaters shoes in the box, along with some cast cross beams.
Brake cylinder 3DP done, but will need to be modified to fit with the new fixing screw for the cab steps mounting plate.
Brake cross shaft - model required to 3DP
Brake pull rods - to make
Sandboxes, Models done, will modify and print when steps are fitted
Cab steps - new plate required one side, steps present and correct, needs assembly to cab steps mounting plate
Rivetted angle across front of frames between cylinders - to reprint a bit thicker
Drain cocks - castings in the box
Vac pump - casting in the box
Vac pump spindle - to make
Weird bit of frame extension under bunker - to model and 3DP
Decoder mounting
Speaker enclosure - design and 3DP
Strip, clean, paint, reassemble, oil and test.
Pencarrow
Western Thunderer
Yes, that should persuade it to lay nicely. Big stick and a smile.
simond
Western Thunderer
One off the list, two that I’d forgotten added. And a few body bits.
Brakes - hangers and frame brackets are 3DP, Slaters shoes in the box, along with some cast cross beams.
Brake cylinder 3DP done, but will need to be modified to fit with the new fixing screw for the cab steps mounting plate.
Brake cross shaft - model required to 3DP
Brake pull rods - to make
Sandboxes, Models done, will modify and print when steps are fitted
Cab steps - DONE
Injector drains next to steps
Rivetted angle across front of frames between cylinders - to reprint a bit thicker
Drain cocks - castings in the box
Vac pump - casting in the box
Vac pump spindle - to make
Weird bit of frame extension under bunker - to model and 3DP
Decoder mounting - DONE
Speaker enclosure - design and 3DP
Shunter’s step - remove from other chassis and fit to this one
Program decoder
Balance weights
Body bits to do
Fit steam heat pipes
Fit vac pipes
Handrails
whistles
anyone spot anything else?
Brakes - hangers and frame brackets are 3DP, Slaters shoes in the box, along with some cast cross beams.
Brake cylinder 3DP done, but will need to be modified to fit with the new fixing screw for the cab steps mounting plate.
Brake cross shaft - model required to 3DP
Brake pull rods - to make
Sandboxes, Models done, will modify and print when steps are fitted
Cab steps - DONE
Injector drains next to steps
Rivetted angle across front of frames between cylinders - to reprint a bit thicker
Drain cocks - castings in the box
Vac pump - casting in the box
Vac pump spindle - to make
Weird bit of frame extension under bunker - to model and 3DP
Decoder mounting - DONE
Speaker enclosure - design and 3DP
Shunter’s step - remove from other chassis and fit to this one
Program decoder
Balance weights
Body bits to do
Fit steam heat pipes
Fit vac pipes
Handrails
whistles
anyone spot anything else?
Last edited:
Pencarrow
Western Thunderer
Remove pen from front frames?
simond
Western Thunderer
trouble with lists is…. you think of things that you hadn’t put on the list. I wasn’t happy with the conrods, crossheads etc, so I had to do them again. I knew there was a reason for 9BA threads and I’ve now found it.
Pivot bolt screwed into the conrod from the rear, can be flush with the back of the crosshead, and still provide adequate bearing surfaces (there’s next to zero load, but anyway). So, new models to 3DP the crossheads, with added fillets, and oilboxes, and I’ve tapped the rods and turned the special screws. Need to shorten them to the right head length, and cut the screwdriver slot, will wait til I’ve made the crossheads, and now I think of it, I can 3DP a jig to hold them whilst I file them and cut the slots, handy this 3DP lark.
and I decided the brake cross shaft would be better in brass with 3DP dummy bearings so I made that whilst I had the lathe out.
so this is where we are now:
List reordered
brass things to make / solder
sheet metal brake cross beams
solder shunters step to frames
injector drains
brake cross shaft solder to frames
things to 3DP
new brake cylinder. 3D done
brake shaft bearings. 3D done
crossheads. 3D done
balance weights. 3D done
rear sandboxes. 3D done
Rivetted angle across front of frames between cylinders - to reprint a bit thicker. 3D amended
Weird bit of frame extension under bunker - to model and 3DP
Speaker enclosure - 3D done
Cab springs
things to fit
Brakes - hangers and frame brackets, shoes
Brake pull rods
Drain cocks - castings in the box
Vac pump - casting in the box
Vac pump spindle
decoder wiring & program
Body bits to do - I think Chris did such a lovely job on the body so far, I might leave these bits to him
Fit steam heat pipes
Fit vac pipes
Handrails
whistles
Right, lunch and then CAD
Pivot bolt screwed into the conrod from the rear, can be flush with the back of the crosshead, and still provide adequate bearing surfaces (there’s next to zero load, but anyway). So, new models to 3DP the crossheads, with added fillets, and oilboxes, and I’ve tapped the rods and turned the special screws. Need to shorten them to the right head length, and cut the screwdriver slot, will wait til I’ve made the crossheads, and now I think of it, I can 3DP a jig to hold them whilst I file them and cut the slots, handy this 3DP lark.
and I decided the brake cross shaft would be better in brass with 3DP dummy bearings so I made that whilst I had the lathe out.
so this is where we are now:
List reordered
brass things to make / solder
sheet metal brake cross beams
solder shunters step to frames
injector drains
brake cross shaft solder to frames
things to 3DP
new brake cylinder. 3D done
brake shaft bearings. 3D done
crossheads. 3D done
balance weights. 3D done
rear sandboxes. 3D done
Rivetted angle across front of frames between cylinders - to reprint a bit thicker. 3D amended
Weird bit of frame extension under bunker - to model and 3DP
Speaker enclosure - 3D done
Cab springs
things to fit
Brakes - hangers and frame brackets, shoes
Brake pull rods
Drain cocks - castings in the box
Vac pump - casting in the box
Vac pump spindle
decoder wiring & program
Body bits to do - I think Chris did such a lovely job on the body so far, I might leave these bits to him
Fit steam heat pipes
Fit vac pipes
Handrails
whistles
Right, lunch and then CAD
Last edited:
Pencarrow
Western Thunderer
trouble with lists is…. you think of things that you hadn’t put on the list. I wasn’t happy with the conrods, crossheads etc, so I had to do them again. I knew there was a reason for 9BA threads and I’ve now found it.
View attachment 222763
View attachment 222768
View attachment 222770
Pivot bolt screwed into the conrod from the rear, can be flush with the back of the crosshead, and still provide adequate bearing surfaces (there’s next to zero load, but anyway). So, new models to 3DP the crossheads, with added fillets, and oilboxes, and I’ve tapped the rods and turned the special screws. Need to shorten them to the right head length, and cut the screwdriver slot, will wait til I’ve made the crossheads, and now I think of it, I can 3DP a jig to hold them whilst I file them and cut the slots, handy this 3DP lark.
and I decided the brake cross shaft would be better in brass with 3DP dummy bearings so I made that whilst I had the lathe out.
View attachment 222769
so this is where we are now:
List reordered
brass things to make / solder
sheet metal brake cross beams
solder shunters step to frames
injector drains
brake cross shaft solder to frames
things to 3DP
new brake cylinder
brake shaft bearings
crossheads
balance weights
rear sandboxes
Rivetted angle across front of frames between cylinders - to reprint a bit thicker
Weird bit of frame extension under bunker - to model and 3DP
Speaker enclosure - design and 3DP
things to fit
Brakes - hangers and frame brackets, shoes
Brake pull rods
Drain cocks - castings in the box
Vac pump - casting in the box
Vac pump spindle
decoder wiring & program
Body bits to do - I think Chris did such a lovely job on the body so far, I might leave these bits to him
Fit steam heat pipes
Fit vac pipes
Handrails
whistles
Right, lunch and then CAD
Gold star award heading your way. Yes, please leave the body bits, it's the mechanical and electrical side that had me stumped. Not sure I'd call my efforts on the body lovely, more agricultural. (There's "add lifting rings" missing from the body list...)
Pencarrow
Western Thunderer
That's the babies.
Pencarrow
Western Thunderer
Just the rings that are absent. The brackets and almost everything else attached to the tanks and boiler top were also not part of the original kit. It really was a shockingly poor kit on buildability, fit and fidelity to prototype fronts.
simond
Western Thunderer
Hi Dave, yes, I guess so, but taking no bets on “for how long?”
In effect the spring part is a swept shape, so they are pretty much drawn as a spring, if not designed as one.I could have tidied up the ends to make them more prototypical and could put a 0.01 fillet on the corners of the spring wire and…. but the time comes when it seems a bit like gilding the mossie’s todger.
time to get this lot converted into print files and fire up the Saturn.
Last edited:
simond
Western Thunderer
Hi Phil
yes, that's typical, but frequently the last coil was closed up first, then ground. It looks like they did that for about 3/4 of a turn in the excerpt of the NRM drawing above. Not happening!!!