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| Building the Minimag |
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| Bogstandard:
No gloat John, I chucked it back in the skip as I've already got one now. :lol: :lol: Now I can gloat John |
| NickG:
Haha, didn't realise you meant literally you just "picked it up" ! Was that the sort of thing I talked about in the other thread John? Chainsaw or strimmer type engine. I'm going to get one and do some experiments with that when I start my i.c. build. Nick |
| Bogstandard:
That's right Nick. The magnets were actually embedded in the cooling fan on the front of the engine. It looked a little complicated to get things how they would need to be, as rather than mechanical points, it had some sort of electromumbo gizzmo firing the spark, so I think I will stick with what I've got. John |
| madjackghengis:
Hi John, that thing you chucked back sounds like exactly what I have in hand myself. I assume you've glanced at my build of the radial engine, and in truth, I've been off it for some time, waiting on parts, but in part, waiting for inspiration, as I don't want a big wooden box full of electrical mess as you described, and yet it must be reliable. I've planned on attempting a magneto from the start, but until your build log, wasn't sure I was going to be satisfied in the end. I still have to put together a rotor, and test my theory, but I think I can build a mag that is smaller than the engine, using ideas gained from your build, and if a mag can fit on it without interfering with any rotating parts, I'd be satisfied with it. With my background in radar and electronics, I expect to make use of the built in trigger mechanism, and if I can't, I will end up using at the least, a coil from the minimag, as it is the right size, regardless of anything else. A points or electronic ignition is easily built, but only a maggie is stand alone, and I feel an engine ought to be complete in and of its self, and hate to see electrics which are twice the size of the engine they run. I appreciate the fact you've picked up a mag like I'm talking about, and have given me a comparative size review, as that supports my idea of getting one working for my purposes. Your build was altogether a fine learning experience, and well done. :beer: cheers, mad jack |
| HS93:
--- Quote from: madjackghengis on February 10, 2011, 08:59:24 AM ---Hi John, that thing you chucked back sounds like exactly what I have in hand myself. I assume you've glanced at my build of the radial engine, and in truth, I've been off it for some time, waiting on parts, but in part, waiting for inspiration, as I don't want a big wooden box full of electrical mess as you described, and yet it must be reliable. I've planned on attempting a magneto from the start, but until your build log, wasn't sure I was going to be satisfied in the end. I still have to put together a rotor, and test my theory, but I think I can build a mag that is smaller than the engine, using ideas gained from your build, and if a mag can fit on it without interfering with any rotating parts, I'd be satisfied with it. With my background in radar and electronics, I expect to make use of the built in trigger mechanism, and if I can't, I will end up using at the least, a coil from the minimag, as it is the right size, regardless of anything else. A points or electronic ignition is easily built, but only a maggie is stand alone, and I feel an engine ought to be complete in and of its self, and hate to see electrics which are twice the size of the engine they run. I appreciate the fact you've picked up a mag like I'm talking about, and have given me a comparative size review, as that supports my idea of getting one working for my purposes. Your build was altogether a fine learning experience, and well done. :beer: cheers, mad jack --- End quote --- How about one of these, cheap simple and I think they do them for more cylinders as well. peter http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10996 http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9906 |
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