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Whilst I am literally waiting for the paint to dry on my Stuart Progress I thought I would make a start on a Stuart Twin Oscillator, along with a friend we are building the single and twin versions. As I didn't want to get too far ahead I thought I would make the two steam unions first. Part...

The cylinder covers have been completed, along with all the shafts as well. When it was assembled it seemed quite tight when the piston was at the bottom cover. I friend suggested polishing the cylinder bore with some 2000 grit paper fixed to a piece of dowel. It worked very well, not only...

Thank you 😊

Hi Jason, the o-ring I was thinking of is BS1806 012, CS: 0.070, ID: 0.364, OD: 0.504 Thanks again 😁

With the cylinder finished I moved on to the piston, piston rod and the pivot pin. On the piston I made room for an o-ring, I have no idea about sizing the o-ring on on the piston, so it will be trial and error when it's ready to run. The main shaft will be awkward to lubricate, so I added an...

Even with the drawings he still makes an appearance every now and then 😉

Hi Mark, I made the drawings whilst I was laid up for a while. When I have finished my model then I'll do some updates to the drawings. I made the drawing from the book and measuring a few bits. There are a lot of bits that you dont need a dimension for, like the flywheel, the width and...

Hi Jason, I've ordeted the SCBCR 1010 E06-APT Lathe Turning Tool and the 0602 inserts. I only need to chip another two inserts to cover the cost of it 😉 Thanks again, Sarah

Over the weekend I have machined most of the cylinder, only making two little mistakes. The first was getting carried away facing off one end of the cylinder and taking a wee bit too much off. Not a real problem as the cylinder cladding will cover that up. The second mistake was due to me...

Hi Richard, I don't possess a faceplate, or a four jaw Chuck yet. But the 4 jaw Chuck is on my shopping list 😊

Thank you for your reply Jason. I will endeavor to mount my next flywheel on the inner edge as you have done in the photographs. My flywheel is a bit wobbly, with nothing running really true, but there will be a next time soon 😊. Your photographs are good at showing the mounting. I will get...

Thank you for your comments. Do you set the inner cast face to run true in a four jaw Chuck? I haven't got one, but it's on my shopping list. I like the idea of blending the hub with a Dremel. The inserts I use with my lathe tools are CCMT06, with a 0.4mm radius. I tend to get them from...

The Flywheel has been machined and polished. I had a problem finding a good centre, both sides of the stub axles were off true, as well as the outer rim as well. I did the best I could, it just feels like a compromise though. I also managed to kill another carbide tip! Any suggestions to...

With my little Stuart Progress I have finished the Base and Frame without any problems. The Crank however took it's toll on a couple of Carbide inserts, with the tips chipping, apart from that it went okay. I had heard that the carbide inserts didn't like interrupted turning, I was quite...

With the refurbishment of the S50 the main shaft, which the flywheel was on, was replaced with silver steel to take up the slack the original shaft had. The piston rod had a little play and was replaced with a new section of mild steel. Pictures below are before and after the refurbishment.

Thank you Nerd for your comments 😊 I have a few models to build and I'll continue to use mild steel for the loaded shafts. Sarah

Thank you Jason and Lloyd 😊 As they say "Every day is a school day" I'll get a sample of the leaded En1a and see how it machines. 😊

Thank you for your comments. I'm a bit off actually steaming the engines, but I will follow your advice when I do. Sarah

Thanks for this. I do tend to search my scrap box first, but the problem is I dont know what most of the material is! When I buy new material I'll look it up on Matweb and label the remnants for future use. I have recently been given some En1a, which is apparently a mild steel with a lead...

Thank you for this link, I'll have a good browse of their catalogue 😊