Engines > Restoration of Model Engines
Help needed to identify vert steam engine
Michael S.:
Sometimes things look worse than they are. I could imagine that not all parts of the engine are defective.
The boiler base is almost always made of sheet steel and rusts.
The boiler could be leaking. Maybe it got too hot and the solder seam is open.
The valves are a real problem. The cone is riveted and they can no longer be moved. The glass in the water level is still there.
I would carefully take everything apart and carefully remove the rust and then decide what can become of the engine.
If not with fire and steam but perhaps with compressed air.
vtsteam:
Thank you, Michael! I will do as you say. Definitely take everything apart and determine it it's at all feasible to get it working again. I'm fine if it isn't possible, though it would be great to see it run again some day.
I noticed that on my engine the steam feed pipe valve is very loose and cocked over on top of the boiler and the top plate is slightly dented there. It obviously got whacked at some point. The whistle also is loose and bent to the side in the top plate.
Okay, I've just unscrewed the whistle. These top fittings are threaded into the plate. I'm surprised that the plate isn't very thick, so there isn't a lot of thread for them.
The top plate also has two screwed in plugs. Presumably for additional optional fittings, water filling, and/or for testing with pressure. These threads are perfectly intact.
I'm trying to imagine how the steam valve and whistle could be functionally attached again. Attempting to silver solder anything would destroy the boiler -- at the very least it would ruin the bluing of the shell.
The only thing I can think of would be drilling and re-tapping the present holes for a larger bushing.
Or I suppose the smaller plug could be removed and the steam valve fitting screwed in there -- that would necessitate rerouting the steam pipe. Then the left-over hole would need to be plugged.
BTW, I do have a boiler test water pump I made a few years ago, and gauges.
Michael S.:
The brass from the boiler still looks good.
I remember from similar discussions in a German-speaking model building forum that the threads on the steam boilers of the toy steam engines from Doll, Falk, Märklin and Co have very special sizes. Maybe you can find a suitable tap for a repair. In the picture it looks like 6 or 8 mm?
You should be able to unscrew the safety valve. It also has a thread. The threaded bushings are very thin.
Michael
john mills:
Hi
I have one similar to repair it does not have a feed pump but the problem is the sight glass i a bent piece of glass tube which is intact
but it seals to the boiler are rubber bushes with i have not found suitable replacement they are well and truly perished.
John
vtsteam:
--- Quote from: Michael S. on December 18, 2023, 08:14:11 PM ---The brass from the boiler still looks good.
I remember from similar discussions in a German-speaking model building forum that the threads on the steam boilers of the toy steam engines from Doll, Falk, Märklin and Co have very special sizes. Maybe you can find a suitable tap for a repair. In the picture it looks like 6 or 8 mm?
You should be able to unscrew the safety valve. It also has a thread. The threaded bushings are very thin.
Michael
--- End quote ---
Hi Michael, the whistle threaded portion measures just under 5mm dia.
I count 6 complete threads in 4 mm of length. I'm not sure what that works out to for metric pitch. I'm guessing .667 ?
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