Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines
Builds, Repairs, Show Your Machines! => Restorations => Topic started by: Hassellbear on March 04, 2024, 10:10:15 am
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Well done on the pinstriping!
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Pinstripes - Part 2
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That pinstriping looks far better than anything I could manage .... regardless of what type of tool was used!
Nicely Done!!!
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A bit more work on the Doll after taking a break. Since the boiler had to come off for repair, it made sense to change the color of the base from machinery grey with sharpie penstripes to a more original green with painted pinstripes. The straight striping was laid down with a Beugler pinstriping tool, and the curves were masked and painted with a brush. Not a perfect job by any means, but better than before. I intended to paint a light green stripe inside of the red one, but I’m gonna stop while I’m ahead.
Now on to the boiler repair.
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I am so impressed in the technical skill in this.
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Hi TraviSteamNThings,
I haven’t belted up the governor yet, but it should be able to run it. It drove my dynamo fairly well when running on air.
Due to piston rod wear, my 365 seeps a bit where those rods enter the cylinders. After running awhile, oily water does accumulate on the base below the piston rods. You can see this seepage in the closeup YouTube video a couple of posts above and compare it to your engine. It’s too bad these engines don’t have replaceable packing where the piston rods enter the cylinders.
Overall, due to wear, my Doll isn’t a super lively runner. I guess that’s to be expected for an engine that’s nearly 100 years old.
Good luck with that Doll, and Happy Steaming.
Darryl
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Nice job on making a new sight glass!
Does your 365/1 have enough power to run the governor? I can’t get mine to. Also mine leaks pools of water, but I can’t see where the water leak is coming from.
Does yours pool water under the cylinders or just a few drops here and there?
I’ve taken apart the cylinders and the piston moves smoothly in the bore. I can’t tell if there is blow-by or not. It’s not something that can be fixed I don’t think.
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Those mushroom head vaporizing burners can be pretty temperamental, but do work well when they work well.
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The joys of old steam toys! :)
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This post comes at the end of a long day of working to make the Doll run on steam.
During the first attempt the sight glass broke. After several tries and some burned fingers, I finally made a workable sight glass. Next there was a mini-inferno in the firebox when the alcohol in the original burner expanded and overflowed. After that I used Sterno in an aluminum foil container, and I will only use Sterno going forward. Then, the Doll refused to run on steam. After several hours of adjustments and tries, it ran - not well, but it ran. Hopefully, a little more heat on the boiler will make it run better, but there may be an issue with valve timing due to the eccentrics being worn.
Happy Steaming (Well most of the time.)
https://youtu.be/-VxzavxAO6Y
https://youtu.be/dDLAEW7-DkA
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One replacement valve handle down, one to go. Not precisely the same, but I'd say close enough.
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Nice job on the replacement handles!
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1st run on air after partial overhaul.
The crankshaft is much straighter than before. Both piston connecting rods and both valve eccentric rods required inserts due to excessive clearances. This engine has seen a lot of use and not enough lubrication. Previous owners had disassembled the engine and then reassembled without attention to detail, as I found multiple issues including one valve eccentric rod cap upside down. I looked at as many pictures as I could find in order to put things back together correctly.
I was hoping it would be a bit quieter, but it seems to run just fine.
Happy Steaming!
https://youtu.be/aNiRPH8mrAI
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I'd say close enough too ... and lookin' plenty good besides!
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One replacement valve handle down, one to go. Not precisely the same, but I'd say close enough.
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A well executed repair.
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I really like that one-piece shim insert as it doesn't take three hands to install and keep it in place!
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nicely done, looks near dead level. :)
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Interesting idea on the rod bearing insert . Looks like a good repair .
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If all goes well, the Doll may be ready for steam later this weekend or early next week.
The crankshaft end play was a bit much and has been reduced using brass shim washers. I am now working to address excessive connecting rod - rod journal clearance (worst one was 0.018 in.) using inserts made from brass shim stock. A wrap-around insert seems to work well and the shape locks into place in the rod and doesn't spin in the rod.
After that, all that remains is a solder repair on the burner and installing new seals on the boiler ports.
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i'M musically inclined. Brass hammer in time usually gets me there. Good Job, looks great!
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Thanks for all of the encouragement. Half of the crankshaft repair battle was mustering enough courage to hit an irreplaceable part with a hammer.
Paula, you are very correct about how prone this Doll's crankshaft is to bending because it doesn't have a shaft support outboard of the flywheel. Plus, due to the crank supports being a bit worn, there was enough play that the bend occurred in the closest connecting rod journal. Going forward, this engine will be gently handled and operated.
Happy steaming!
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Excellent work! [attachimg=1]
Paula
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Good repair!
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Well executed.
Congratulations.
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Much improved! At least as good if not better than new.
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The restoration of the Doll 365 is now underway.
The 1st repair completed is the bent crankshaft. The shaft isn't perfectly straight, but it's much better than before. Tapping with a soft faced hammer did the trick. A purpose-built clamping and gauging fixture made the job simpler. That fixture allowed rotation of the shaft to gauge the runout, and tightly clamping the shaft for tapping with the hammer.
https://youtu.be/T5ybLjTpdMU
https://youtu.be/iF8NPKiuTko
Shaft Clamping Fixture
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Happy Steaming :D