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  1. 74Sprint

    Model Engine Ignitions

    Steve video in the works right now. I just have to figure out how to shrink it's size. ray
  2. 74Sprint

    Model Engine Ignitions

    No I won't be showing you that, at least not right now maybe in a year or so. Why well I don't have the time or money to complete that project just for your fun. You definitely need to explore and research more about what's going on besides this forum. Did I hit a nerve with you? Seems like it...
  3. 74Sprint

    Model Engine Ignitions

    I will.
  4. 74Sprint

    Model Engine Ignitions

    For starters I didn't term the phrase "smart coil" the automotive community did. On this coil just like the original GM HEI 4 pin module it starts charging on a positive going pulse and then discharges as soon as the pulse goes towards negative. Nothing happens because it needs to see a positive...
  5. 74Sprint

    Model Engine Ignitions

    I saw that and I've also seen where they want 2 caps, it's just the standard decoupling thing. I won't be doing anything like that here. I haven't made a Tesla coil in years since I was a teenager. I understand that "sparks per minute", for me it's sparks per second of at least 333.33 or...
  6. 74Sprint

    Model Engine Ignitions

    That is totally awesome and funny as ever, I like it.👍LMAO.
  7. 74Sprint

    Model Engine Ignitions

    The simplest ignition I can come up with besides points. Just a quick update on the LS1 smart coil and driver board. I tested the coil a bit more and the required driver components. It will work with just a Hall-effect but it's not consistent. To correct this a PNP transistor is needed to drive...
  8. 74Sprint

    Model Engine Ignitions

    Yah I guess movies are proof of concept. LOL
  9. 74Sprint

    Model Engine Ignitions

    I finally found some time to get to the auto-wreckers and got 4 different types of ignition coils, all 12 volt. I tested the coils for strength along with some different types of IGBTs, MOSFETs, and some transistors. I didn't actually measure the voltage or current outputs from the coils so I...
  10. 74Sprint

    Model Engine Ignitions

    Timing pulses: Until I get a timing wheel put together with magnets it will be hard to show the auto advance of the trigger pulses. I setup the CD4047B to show the difference between the fixed timing pulse (leading edge) and the auto advance (trailing edge) using just my hand. Before I go...
  11. 74Sprint

    Model Engine Ignitions

    I saw that one on Amazon after I bought mine and thought I should have gotten that one. Oh well but, it's not a majour tool for me just something handy for doing quick checks. I see that one had a better review than mine and it sells anywhere from $44 - $56 CAD depending on the options, funny...
  12. 74Sprint

    Model Engine Ignitions

    The mini scope is done and I have started using it and here is my review. So why does anyone need a scope for? Well a scope can do everything a multimeter can except measure current directly but, even that can be measured as a voltage drop across a load. Once a person gets use to and familiar...
  13. 74Sprint

    Things of beauty

    Things of beauty, well at least they are to me. I only wish I could make these rods myself. They are GRP CNC'ed machined billet aluminum rods 5.650" big block Chevy and they are for my backup motor encase the Olds big block goes boom. I bought 2 sets of 8 and one set came with bearings. Yes they...
  14. 74Sprint

    Model Engine Ignitions

    Well I found what your looking for but you won't like it. The info below was taken from the National Center for Preservation Technology & Training and it is from a POD cast that you can read or listen to: quadricycle-questions-with-mose-and-andrew. Here is a section of what you want: "Mose...
  15. 74Sprint

    Model Engine Ignitions

    Doug Doucette and I both agreed quick is never quick enough, you get use to the G's and speed and then you want more. So 'how fast can one afford to go':D Yup I remember helping Doug change sleeves, pistons, and rods and asking him how long they last and how much doing 1 hole cost. His answer...
  16. 74Sprint

    Model Engine Ignitions

    I have an old Phillips scope a PM3302 I bought it years ago. It's old and almost worn out but it's still kicking and the storage part of it usually works LOL. I have 2 1x-10x but yah I should get some attenuators. I hacked a old probe and put a precision 1 meg resistor inline, it works but don't...
  17. 74Sprint

    Model Engine Ignitions

    Yes it true the plugs can burn away real quick, the plugs won't fire but they're so hot that the nitro will still ignite, they end up working like a glow plug. Nitromethane is a really weird solvent, yup that's what it really is, pour it on the ground like concrete and hit it with a hammer and...
  18. 74Sprint

    Model Engine Ignitions

    So I'm finally getting to solder up my scope kit. It's a JYE Tech DSO 138 Oscilloscope DIY Kit, it's their older model that's still available on the internet at Amazon for $40.00 CDN. I've had it for a while and it's obsolete, their new version is the DSO 138mini Oscilloscope DIY Kit and it is...
  19. 74Sprint

    Model Engine Ignitions

    You have to remember that, that ignition was for automotive racing and at full power it draws 48 amps charging the coil! It will ignite a lean mix or rich mix just as easy as a stoichiometric mixture. Yes it is hard on sparkplugs but, when I tested it on my truck I turned the power down to about...
  20. 74Sprint

    Model Engine Ignitions

    I have found that depending on whom you talk to about plasma you get different answers, everyone has an opinion right. I was taught that plasma is super heated gases at or above 5,000 deg. F. high enough to create free electrons. But if that's the case then what about neon lights and such? In...
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