Recent content by Andrew Pullin

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    A Question about Generators

    Thanks for the offer of books. A scan of the pages would be nice thank you (I have a nasty habit of not returning books but I also have an extensive library :) ) Scaling things up and down are useful exercises for me as I am at Engineering School so it helps to fill in blanks and make me think...
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    A Question about Generators

    Hi All, Some good feedback and interesting suggestions. A couple of points to clarify (but thanks to those that made suggestions otherwise). The point of this exercise is not so much to build the generator but to work out how I would build it. As mentioned, there are many Science Fair projects...
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    A Question about Generators

    Hi All, My Mind works in a very convoluted way sometimes. It occurred to me that Steel Flywheels would be perfect to simply stick Magnets to, and if I have a coil(s) of copper wire that these magnets rotate past then it would produce a voltage and current. This is basic Faraday's Law and the...
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    Learning to Sprint the 100m before we can walk

    Right now the design is a can I do it and could it actually be fabricated - a prototype is on the cards but beyond that I don't know. The plan was to make the Cylinder and Piston out of MS. Are you saying my suggested Tolerances of 0.05 are too lax or the recalculated ones of 0.02. The first...
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    Learning to Sprint the 100m before we can walk

    Hi Charles, So if my Cylinder is 20mm then 20/1000 = 0.02mm. Is that clearance in general for a smooth fit or does it take into account thermal expansion? I suggested that 0.05mm might work so a 20.00mm Cylinder should be toleranced at between 20.00mm and 20.05mm. I also suggested that my...
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    Learning to Sprint the 100m before we can walk

    Hi Guys, My engineering School encourages us to get into our learning by getting our hands dirty so as such I am putting my extremely limited knowledge to work. I am designing a simple Wobbler Steam Engine - Bore 20mm, Stroke 40mm for a capacity of about 12cc. There is about 10mm of overhead...
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    Gerry's Beam Engine -Finally finished !

    Hi Thad, Good catch! All I did was extract the Drawing from the huge original and turn it into production Drawings. I literally cut and pasted every one and the only changes I made were to scale and fit on the A3 and A4 pages. On looking at the Drawing it seems to me that you use 6mm Diameter...
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    Hullo from Or-straylia

    Hi John, Thanks - I will send a message to them. They were provided free to download and I have simply transposed them onto smaller Production Sheets without any changes. I also made sure they were accreditted to this site and both people. I used it as a learning exercise to bring my AutoCAD...
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    Fusion 360 for a beginner

    Hi All, Fusion 360 is a lot more than a "simple CAD program" - it is on my learning list for Engineering School but I am not quite there yet. There have been a lot of good suggestions so far in this thread but here is mine: I learned AutoCAD first and I taught myself using this site...
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    Gerry's Beam Engine -Finally finished !

    Hi Guys, I have recently finished transposing the Metric Plans of Gerry Beam Engine drawn by Ken I into individual Production Drawings. I did this as an exercise to practice up my AutoCAD and to learn the Australian Standard 1100 which is the Engineering Drawing Standard we use down here but...
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    Hello, from Sri Lanka.

    Hi Brian, Frightening wasn't it? This one is even BETTER! https://en.wikipedia.org/wiki/Project_Orion_(nuclear_propulsion) I like this line: Early versions of this vehicle were proposed to take off from the ground with significant associated nuclear fallout; later versions were presented...
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    Hello, from Sri Lanka.

    Hi All, A Steam powered aeroplane is certainly safer than a Nuclear powered one that the Americans built in the 1950s. Hello to Brian! It was your engine I initially discovered that introduced me to this website. I am currently in the process of transcribing Ken I's Metric version of it to A3...
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    Hullo from Or-straylia

    Hi All, The Air Canada flight was a brand new 767 that ran out of fuel due to a lost decimal place in the fuel conversion from pounds to kilograms. The 767 was the first product made by Boeing to use Kilograms. Not only did it run out of fuel but it also made a successful landing at Gimli just...
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    Technical Question about Steam Engine Plans

    Hi Guys, I am a bit new at this so please bear with me. I am a Mature Age Engineering Student studying Trade Engineering. I am currently creating a set of Drawings of Gerry's Beam Engine in Metric based upon the Metric Plans that Ken I drew up on one very large sheet and posted on this site...
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    Hullo from Or-straylia

    Hi Guys, Thanks for the Welcome. I am not young but I do remember when I was and we used both Metric and Imperial. I fondly remember doing long family trips in the car and would see the "new" road signs in Kilometers and always asked my dad how far that was. He taught me how to work it out -...
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