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Jonathan Coates

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    • Jonathan Coates
      Jonathan Coates replied to the thread Stuart S50.
      Thanks Jason, I love the idea but the hole in the centre of the radius is only 3/32" diameter. I thought starting small was a good idea!
    • Jonathan Coates
      Jonathan Coates replied to the thread Stuart S50.
      Well I found time to make a start on the conrod part. The marking out and hole drilling went OK then I drilled each end for the centre...
      • Conrod taper.jpg
      • Conrod turned.jpg
    • Jonathan Coates
      K2, here are some photos as requested. This is my antique dog, at 15 years old she's a living fossil. These two are photos of the...
      • Stella.jpg
      • Deckel1.jpg
      • Deckel2.jpg
    • Jonathan Coates
      Jonathan Coates replied to the thread Dovetail messed up.
      Well disaster was very narrowly avoided. After I put a bigger cutter in and trimmed off the offending parts, the dovetail was 0.5mm too...
      • Deckel1.jpg
      • Deckel2.jpg
    • Jonathan Coates
      Jonathan Coates replied to the thread Stuart S50.
      Thanks Jason, I hadn't realised that the H section was so modern. I was going by steam trains from my youth of the OO gauge sort, not...
    • Jonathan Coates
      Well my dog had a big birthday, 15 years young, so she got a steak for lunch and a nice roast beef dinner later. Somebody, mentioning no...
    • Jonathan Coates
      Jonathan Coates replied to the thread Stuart S50.
      The last few days have been quite busy with home and work stuff but I got a chance to do a bit more with the cylinder casting. I've had...
    • Jonathan Coates
      I couldn't get the measurement over the pins to go down. Cut after cut there was always a little still to come off. Now I know why, I...
      • Dovetail.jpg
    • Jonathan Coates
      Jonathan Coates replied to the thread Piston and crankshaft.
      Like this, perhaps? You could make it even spicier if you got some hydrogen peroxide as well...
    • Jonathan Coates
      Thanks Andy, I've got a 10" one. Never thought I'd say that line. I found online an old newspaper advertisement where it's advertised...
    • Jonathan Coates
      Jonathan Coates replied to the thread Stuart S50.
      Today I found a spare hour and spent it finishing the flywheel turning. All it needed was one chamfer on the rim and the centre reaming...
      • Flywheel fit.jpg
      • Jo blocks.jpg
      • Boring.jpg
    • Jonathan Coates
      Jonathan Coates replied to the thread Piston and crankshaft.
      Luckily, our excellent government have found a way to grow hydrogen on trees so that it doesn't need to be made from natural gas, but...
    • Jonathan Coates
      Jonathan Coates reacted to Jasonb's post in the thread Stuart S50 with Like Like.
      You need to remember that when these engines came out those making them had a steel rule and a pair of firm leg callipers. Engines were...
    • Jonathan Coates
      Jonathan Coates replied to the thread Stuart S50.
      Well yesterday turned out to be a long day, dragged out of bed by a work phone call and didn't get back until eating time, so I didn't...
    • Jonathan Coates
      Jonathan Coates replied to the thread Oil burner..
      One problem that you will face is that the lighter fractions will evaporate off the WMO leaving the heavier more tarry bits. The exact...
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