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RC Universe Forum Search (Beta) Results 1 - 2 of 2 for username:"ngopaul". (0.00 seconds)
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RE: CDI gr8flyer55
Very intersting with all your post. Say again, I think we just focus to multi spark (at least two) when engine start in cold weather condition only, that means if engine good start then when it ready go to advance (180-970RPM) multi spark will be shut down, this time it running with single spark. Why we need multi sparks for cold start? I converted Ryobi SS30, using Nyemi' schematic, build PCB, loaded Rexel'Hex, engine just run after one flip, but winter last year, I has flip one hundred time to make engine start in 35 deg.F, after that I explore if I connect signal out put from Hall direct to gate'SCR it will produce two spark: one direct from Hall and one from 12F683 out put, then engine start very easy, but it lose advance until I disconnect direct signal. I'm not coder, but I think it can be done with software, and why it needs to be shutdown multi sparks when engine go to advance mode: -Small engine'chamber don't need multi sparks to completetly burn-off fuel mixed. -Multi sparks reduced spark plug life and wasted more battery current in RC engine. -We don't need to replace power invert circuitry because in slow speed (180-970RPM) the capacitor enough time to full charge before discharge multi sparks. Bottom line, we need multi sparks for start engine only.
Posted on: 8/5/2012 4:37 PM by Author "ngopaul" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=11182102

RE: CDI gr8flyer55
Hello everyone. I'm newbie with our forum. Let me self introduction: I working for Food Supply company, my job is maintenance automate system. I learning DXP software to drawing schematic and layout PCB by my self, if everyone have request just post me, I can layout both through hole or surface mount, reduced to minimal board size, get low cost for print circuit board. My interesting is flying, I spend all time I have for this. Follow-up with forum, I just finish convert my weedeater Ryobi SS30 to make it fly, do ignition system by my self, programed with Nyemi's Rexel software, engine ran perfect, timing respond very good, the only thing is in winter when engine cold, it very hard to start, I think if we have multi spark (at least two spark) from 0 RPM to 970 RPM this will be great. Please post whatever you thinking. Nyemi, can you help me about this, thanks in advance.
Posted on: 8/1/2012 4:58 PM by Author "ngopaul" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=11177723

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