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    Expert Multi Cylinder Glow Driver

    Thanks. Yes, Phil's build is in my collection of reference pics. I know on some glow engines, maybe similar to Seidel, the plugs are situated deeper in the head so necessitate the longer, cylindrical style connector to reach. But I think I can accommodate the lateral spade thing. And I even have...
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    Expert Multi Cylinder Glow Driver

    Nice, Mike! My auto charger has some conditioning algorithm that helps bring them back from the dead & it really does work over my older generation constant trickle chargers. Unfortunately it only has a nominal 12V & 6V switch setting. 2V would likely confuse it. It looks like you are driving...
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    Expert Multi Cylinder Glow Driver

    I was not aware of that system. Also lithium cell based. Sorry for sidetracking post @Vixen Has not really solved your original issue but at least some alternative options have come to light if circumstances so dictate. https://rainbow-tronic.de/en/cartsearch/index.html
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    Offenhauser Inline 4 cylinder, Might Midget Model Engine Build

    My bronze valve cage is similar to yours. I have to check my notes but I think I used 620, the high temp version, for bit of insurance. Judging by some torch testing I think (I hope) it will stay put. One thing to mention is Loctite sets off crazy fast on bronze for some reason. Good thing I...
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    Expert Multi Cylinder Glow Driver

    Thanks for input @dieselpilot I actually forgot about the McDaniel unit.
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    Expert Multi Cylinder Glow Driver

    I've fallen way behind posting but at least building has continued to progress. The (heavily modified) O-ringed lifter bushings & pushrod tubes are finally done, so its more a bunch of fiddly things remaining to do now.
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    Expert Multi Cylinder Glow Driver

    I've been around RC a long time so reasonably familiar with plugs & starting. These el-cheapo clip-ons are essentially a NiMH cell direct connection, I don't think there is any other magic inside other than some have a mickey mouse meter in the end. There are much better driver units which not...
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    Expert Multi Cylinder Glow Driver

    Thanks Mike. I wish I had a firmer gasp of DC regulators. I will consult my electrical engineer friend. I'm not concerned by airborne weight so may go at it with round cells, at least to make some initial smoke. Here is the the OS-5 cyl writeup. Actually quite simple as long as the appropriate...
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    Expert Multi Cylinder Glow Driver

    Where I am going with this? Now it gets a bit harder to describe but I want to compare lead acid chemistry to Lithium because they have different discharge curves. For example this comparison plot shows at 12.0v cutoff, the lead acid can only deliver ~45% of its rated nominal capacity vs Lithium...
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    Expert Multi Cylinder Glow Driver

    At 38:19 he shows a plot of a 12 volt, 7 amp-hr battery at various discharge rates, 3.5A (0.5C), 7.0A (1C), 14A (2C). The resultant capacities of these discharge scenarios do not equal the nominal capacity of the battery. Nominal rated = 12V * 7 amp-hr = 84 watt-hr. The 0.5C = 42.7 W-hr = 51%...
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    Expert Multi Cylinder Glow Driver

    OK, lets delve into this some more. I'm willing to learn! LOL I'm going to paste a YouTube video which discusses battery terminology in some some detail. I think I comprehend it correctly, but maybe I didn't express myself correctly in the post. Because I think what you described above is an...
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    Some questions about lathe

    I bought one of those through Ebay via India about 3 years ago. I didn't have high expectations knowing where it came from but actually it wasn't horrible, at least initially. The diameter was pretty consistent within 0.0002" down the length of the (~16"?) bar using my best micrometer. I...
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    Expert Multi Cylinder Glow Driver

    Thanks @bluejets I don't want to impose on Vixen's post but did you discuss your glow driver design or show a schematic somewhere on the forum? I'd like to refer it to my electrical engineer friend because not at all familiar with what the components do.
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    Expert Multi Cylinder Glow Driver

    This may or may not have been the unit recommended to me. It seems similar. There are fancier ones out there with digital display & programming capabilities. Attaching screen grabs in case the link doesn't work. If anyone thinks I'm barking up the wrong tree let me know, sparky stuff is not my...
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    Expert Multi Cylinder Glow Driver

    No, but I was made aware of some that are in the 2-5A range, hence my plan to have 5 of them, one dedicated to each glow plug but feeding off a common battery. Sounds wasteful, but they were spit cheap. They are also somewhat programmable so for example the lower plugs could be set a bit warmer...
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