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| Building a 31/2" Gauge Locomotive Engine |
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| kvom:
Nice work! |
| SPiN Racing:
Very Nice Stew! Sacrificial part..... ahhhhhhhhhhhhh :thumbup: (we need a smiley with a lightbulb over its head) Very smurt. I never thought of that... I may have to pirate that idea! Looking really nice though... very intricate.. Reminds me of the Marklin train I had/have as a kid. I gather its worth a goodly sum nowadays. I took it in to get serviced 15 or 20 years ago to a bug moodel train place.. and they were all ga ga over it. Its HO scale.. but has super detailed mechanisms, all to scale I gather... I need to dig it out I think. Seeing you make these driveline mechanisms is really fascinating to me, cause I never really gave the operation of the individual arms much thought. Really cool!! |
| bogstandard:
Real nice work Stew. Isn't it good when things start coming together and it begins to look nice and complicated? I see you are going to case harden a few things. Are you applying it locally as it looks like you might run into trouble with your silver soldering if you want to take the whole part up to cherry red. John |
| sbwhart:
Hi John The eccentric links that are silver soldered just hold the pins in place so are not subject to wear so they won't be case hardened. The rocker arms are different kettle of fish though they will be subject to wear, reading old Curley's words and music recommends mild steel and silver solder, no mention of case hardening so he may have just gone with mild steel :scratch:. I've got a little set of gas bottles that I can get a fine flame with so I'm going to try and localy case harden the arms, if it doesn't work out I'll just have to make new from a chunk of gauge plate, I know a man who's got some :lol: and I'm far more confident with my mill now I know could mill one out from solid with it. Stew PS is your swivel chair still missing a wheel only I aquired some the other day. Stew |
| NickG:
That is quite a collection of fiddley little bits Stew! They are looking great, you've just made all the bits that scare / put me off projects! Well done, how far off is a trial run on air then? Nick |
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