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Recent content by Charles Lamont

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    Stuart Turner Compressor

    A scruffy ST compressor just sold on Ebay for over £300. https://www.ebay.co.uk/itm/stuart-turner-compressor-turns-over-fine-but-will-need-checking-over-and-paint/254838077928?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
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    TIM 6 ignition

    Thanks for the massive help. I don't think I need to go any further in terms of the ignition at the moment. Getting back to the electronics will have to wait until I have a coolant pump, and possibly the starter motor. See my post at Westbury 'Seagull'
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    Westbury 'Seagull'

    Folks, it is running (after a while). The video can go full screen I think. http://www.charleslamont.me.uk/Seagull/testing.html
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    TIM 6 ignition

    Earthed, grounded = battery negative - my sloppy language. I will try to be more precise in future! I think it was probably the TIM-6 that blew the two hall sensors. The sensor always has been well insulated at the engine, and the engine connected to battery negative (the latter less important...
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    TIM 6 ignition

    Soo. Listening to the advice above, I have isolated everything from the lathe, and that seems to have eliminated that noise problem for now. I also took away the buck regulator power supply for the ignition and wired it directly to the 4.8V battery pack. I fitted a big aluminium bar to ground...
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    Adhesives for Round Rubber Belting

    I think neoprene will need an adhesive. Hot welding is for polyurethane belting, so surely a red herring?
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    270 Offy

    I forget, does the Trimble method include a final turning stage, after heat-treatment?
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    Arrand Spindle

    Arrand kit was superbly made. I too have one of their boring heads, and a milling arbor.
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    Stuart Tap and Dies 32-50-72091

    The label on the box tells us they were sold by Stuart, during their Guernsey ownership. I think they are likely to be carbon steel, not HSS. I don't think they have anything to do with the Tap and Die Co (which I have always found overpriced whenever I have looked).
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    TIM 6 ignition

    Guys, thanks very much for all the suggestions. I have a lot to think about, and quite a bit of work to do. I will be back when there is something to report.
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    TIM 6 ignition

    Ray - Just to clarify, the coil is a Minimag Novus 2 coil designed specifically for 2-cylinder model engine applications using a wasted spark. The HT leads are connected one to each plug. The HT is not connected to the LT. I can isolate the circuitry from the lathe. Nylon bolts (on order), and...
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    TIM 6 ignition

    Thanks, Tim. I will think about the best way to implement your recommendations on grounding. Awkward little buggers, these electron thingys. I have plenty of ally sheet I could cover the board with, so that may well be part of the solution, or perhaps a chunk of brass to provide a star...
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    Material choice for combustion engines and the limitations of homemade engines

    Jens, using scrap sources may be fine for making models, but the OP wants to build an engine that he would be trusting with his life.
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    4 cylinder/4 stroke mystery engine

    It is a lovely piece of kit but it isn't a Westbury design.
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