Well, a good day! Befur went back on the water yesterday, and it would appear that the work over the winter worked well.
This post continues/concludes the story of manufacturing a new crank for Befur from the last post.
Here we can see the re-assembled engine with new crank. We are still to install all the ancillaries (reversing gear, lubrication, condenser and feed/air pump & alternator drive.)
It took 6-man days from receiving the crank back from the grinders to reach this stage.
Once we have tested it on air, we will reinstall it on the boat and undertake this year’s boiler test and check all is as it should be.
Machining Crank Pins
Those of you who have been following Befur’s progress will know that our first year in the water was marred by the failure of the crankshaft in the Leak Compound engine I built.
This post deals with the manufacture of a replacement, and the results of my research/experience into the approaches to building cranks for “small” (<20HP) marine steam plants.
Methods of Manufacture
We are feeling like the end (of the first phase) of “project Befur” is in sight – we have set a goal of having her on the water in April – the remaining 90 days appear to be passing at some speed.
This time I wanted to document the final work to get the engine and boiler ready for installation in the boat, the electrical system and Louise’s work on fitting out. Continue reading
First Fix the Bugs!
Following on from the Boiler test, and a quick trial we identified just over 20 items that needed some attention. So a week later, with all these items fixed (from leaking valves to painting and plating valve gear components), we are ready to try again. Continue reading
Well the 10th November 2017 marks a major milestone – the boiler passed its initial inspection and steam test, and is now certified for use. (big smiles all round).
John, our inspector from SBAS Ltd (the SBA’s Boiler Inspecting Company) had been booked to arrive at 3:00pm – at 9:00am I set about final sealing of the try-cocks on the sight gauge – at 1:30pm I nearly called to cancel the appointment as no amount of fiddling and fitting would make them seal, with a constant drip from each of them at anything above 50psi 😦 Continue reading
Over the last few days we have encountered the two items mentioned in the title in real life, in a slightly stressful way.
The Real McCoy
While Wikipedia suggests two origins for the phrase “The Real McCoy”, the most well documented version relates to one of the brass beauties shown here.
It is a displacement lubricator patented by one of Elijah McCoy’ in the 1870s in America. These devices perform a simple, but vital, role of providing internal lubrication for steam engine cylinders and valve gear, but they do it using an apparently impossible process. Continue reading