Steam engine from the North Caucasus
- fredrosse
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Re: Steam engine from the North Caucasus
One method to reduce the use of expensive bronze for as a bearing material is to make the part of steel, and fit a bronze bearing with a pressed fit, or bronze held in place with screws, or fitted the same as automobile /IC engine practice, etc.
The valve gear eccentric bearing for my engine was fabricated with steel, and then fitted with a bronze bearing. You can also use automobile/truck split bearings, available in almost any size you want, rapidly available and cheap in the USA. Look up the engine bearing size, often given in engine manuals (available online), then order the bearing shells.
The valve gear eccentric bearing for my engine was fabricated with steel, and then fitted with a bronze bearing. You can also use automobile/truck split bearings, available in almost any size you want, rapidly available and cheap in the USA. Look up the engine bearing size, often given in engine manuals (available online), then order the bearing shells.
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- fredrosse
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Re: Steam engine from the North Caucasus
Eccentric bearing build details.
A bearing ring is machined of steel, and milled recess made for bolt seats.
A bearing ring is machined of steel, and milled recess made for bolt seats.
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- fredrosse
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Re: Steam engine from the North Caucasus
Bolt seats were brazed in position, or this entire piece could be made from one single piece of steel.
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- fredrosse
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Re: Steam engine from the North Caucasus
Brazed assembly
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- fredrosse
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Re: Steam engine from the North Caucasus
Bearing Bronze installed, held in position with a light press fit, and three screws that also keep the eccentric allignment
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- PeteThePen1
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Re: Steam engine from the North Caucasus
Hi Ingvar and Friends
Yes indeed, I do like the pieces that you are making. I think that you and Mike Rometer (and Fred!) are doing great things in building and displaying these engines and although I envy your skills, I appreciate that it takes a long time to get to that level of competence. Given the way that Britain's Neo-Con governments of the last 30 years have prioritized financial casino business over making stuff it is nearly impossible to get any kind of course for training hobby engineers any more. Besides I am way too old to gain all those skills, but enjoy seeing good work on this site.
Thanks also to Cyberbadger for the kind offer. I will keep that in mind for when I start the next project.
Regards
Pete
Yes indeed, I do like the pieces that you are making. I think that you and Mike Rometer (and Fred!) are doing great things in building and displaying these engines and although I envy your skills, I appreciate that it takes a long time to get to that level of competence. Given the way that Britain's Neo-Con governments of the last 30 years have prioritized financial casino business over making stuff it is nearly impossible to get any kind of course for training hobby engineers any more. Besides I am way too old to gain all those skills, but enjoy seeing good work on this site.
Thanks also to Cyberbadger for the kind offer. I will keep that in mind for when I start the next project.
Regards
Pete
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Re: Steam engine from the North Caucasus
Dear Fred! I would fully comply with your recommendation by making clamps for eccentrics from steel, using a small amount of bronze. But only if you shared your pictures in the year 2018. In 2018 I decided to make bronze clamps. I bought a bronze disc on 200 mm in diameter and 75 mm thick back then. Currently, I am not able to change the design of the clamps, as in your pictures. Your design is economical but difficult to manufacture. It takes a lot of skill and a lot of time. Time is my enemy. While I'm busy making the top cover of a large cylinder. Here are some pictures. Dear Cyberbadger! I am grateful for your offer. When I have completed all the major large steel parts, I will contact you and we will discuss your proposal in detail. Best regards Ingvar.
Re: Steam engine from the North Caucasus
DetroiTug wrote: ↑Tue Sep 22, 2020 2:28 amHere is an original George Whitney boiler that belongs to a friend of mine. The engine that went with this boiler was purchased by Webster out east of aluminum launch hull fame. The engine castings were copied and sold to a few people.
A boiler design you may consider with larger tubing and limited means to bend it, is the porcupine boiler.
This Whitney boiler uses right and left hand threads.
-Ron
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Re: Steam engine from the North Caucasus
Sent this picture to the guy that has the boiler, he got a kick out of it. I think that boiler is going to auction soon, are you interested?
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Re: Steam engine from the North Caucasus
Dear DetroiTug! The George Whitney steam boiler is very good. It is difficult to take your eyes off him. A boiler like this could turn my steam engine. Probably the boiler produces 150-200 kg. steam per hour at the required pressure of 200 psi. However, at this time, I cannot expect to purchase it. The North Caucasus is the south of Russia, and the boiler is not even in Europe, but overseas. Transportation of such a boiler will require very high costs, probably more than the cost of the boiler at an auction. I would be interested to know its value in dollars. I am interested to know its weight and technical data. While I am busy building a steam engine, which took a lot of my efforts and money. I had to equip my workshop 10 years ago, which also came at a high cost. Now in Russia, as in the whole world, there is a fight against the pandemic. This greatly affects the economy and small business. Therefore, the pace of progress of my project - a steam engine, slowed down. But a few photos, I can show. Good luck with your business! Ingvar.