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  1. #1401

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi Nyemi...
    How do we change the curve in the excel sheet and then get it into the assembly source code?

    John

  2. #1402

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi gr8flyer55
    You need to copy ASM code. The red band (retlw values).
    Excel does not generate ASM code.
    Do you have ignition curve? I produced ASM code. To you.
    Regards nyemi.

  3. #1403

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    RE: New CDI - opensource project JMJ and Bigboat

    Thanks Nyemi...
    I'll make the changes to the Excel sheet and try copy & paste.
    Hope to post some results after test runs and possibly a video.

    John

  4. #1404

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    RE: New CDI - opensource project JMJ and Bigboat

    Nyemi, I need the starting degrees to be at 6 degrees. If I try to start my engine with the curve set the way it is, it kicks back hard when trying to start. Maybe setting advance from 458 rpm to 1000 rpm to be 6 degrees would work better.

    John

  5. #1405

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi gr8flyer55

    I will give you a blank curve. I do not understand that you want.

    You show me, low-speed ignition curve.

    The image shows the low speed options.

    The degree values ​​can be changed.

    In this case 15 °.

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    Regards nyemi.

  6. #1406

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi Nyemi,

    Thanks for all your efforts. Inital or POP(point of pickup) timing is 28 - 30 degrees BTDC. At starting rpm(rpm > 500) the curve needs to be at 5 degrees BTDC to avoid kickback. once the engine starts and idle then the curve can begine to advance. Thanks again.
    Regards
    Charlie M.

  7. #1407

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi COM
    I asked. 458 rpm under a green or black curve?
    Motor bicycle works: no spark <458 RPM
    You manually operate the engine.
    I, therefore, deals with low RPM.

    I count reverse.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Regards nyemi.

  8. #1408

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi Charlie...
    It seems to work for me now that I reduced max static advance to 15 degrees. Need a reliable excel sheet.

    John

  9. #1409

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi John,

    with the inital timing set at 15 degrees you won't be getting all you can out the engine.As I am sure you know.
    Regards
    Charlie M.

  10. #1410

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    RE: New CDI - opensource project JMJ and Bigboat

    I know Charlie, but at least it's not kicking back now. The advance should actually start after 1,000 rpm. That seems to be so hard to accomplish with this program and excel sheet.

    John

  11. #1411

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    RE: New CDI - opensource project JMJ and Bigboat

    Charlie, have you had any luck editing the excel sheet for Nyemi's new assembly program?
    I had tried awhile to get it to stay at 0 degrees until it reached 1000 rpms. Every time I try, it seems to revert back to 458 rpms. Wish I knew the trick to get the edits to stay what I changed it to. That's all I need to complete the hex file to make it perfect.

    John

  12. #1412

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi John,

    I have not been messing with the new code. I have instead been playing with the old code and fine tuning the excell sheet for it. I ported the code over to a 12F pic. now all that is left is to try it. I want ti do that tomorrow or tuesday. I will let you know what I find.
    Regards
    Charlie M.

  13. #1413

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    RE: New CDI - opensource project JMJ and Bigboat

    John,

    for faster replys you can just email me. then when it is all figured out we can post it here. just a thought.

    Regards
    Charlie M.

  14. #1414

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    RE: New CDI - opensource project JMJ and Bigboat

    Let me know if it works Charlie. Getting nowhere here with edits. Although it does run my 25cc engine just fine after a rough start.

    John

  15. #1415

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    RE: New CDI - opensource project JMJ and Bigboat

    Charlie, we have perfection! Absolutely perfect!
    I am getting 1 flip hand starts without a chicken stick.
    1800 rpm very reliable idle and beautiful top end performance of 6800 rpm on my 25 cc conversion engine.
    That's down from my normal idle of 1950 rpm and over 400 more top end from my usual 6400 rpm max I had before!
    Excellent results I think.

    I am in the process of getting everything finalized for a complete package ready to go and cheaper than an RCexcel.
    Many things to do now from board production to final products. I have a shopping list underway here.

    John

  16. #1416

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    RE: New CDI - opensource project JMJ and Bigboat

    There's a new simpler timer board coming!

    John

  17. #1417

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi John,

    Yea it worked that way for me too. glad to see its consistant.
    Regards
    Charlie M.

  18. #1418

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    RE: New CDI - opensource project JMJ and Bigboat

    Hi gr8flyer55


    I'm curious look forward to.
    -
    Others.

    Does anybody have an extreme curve of ignition.
    I'll help.



    Regards nyemi.

  19. #1419

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    RE: New CDI - opensource project JMJ and Bigboat

    Just posted this in another section and thought it might be of interest to you here.

    http://www.rcuniverse.com/forum/m_98...22/key_/tm.htm

    CDI capacitor charge chip and transformer.

  20. #1420

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    RE: New CDI - opensource project JMJ and Bigboat

    Just finished testing new timer boards and new software. Everything is now working perfectly.
    No frills, no bells & whistles, just great performance.

    John

  21. #1421

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    RE: New CDI - opensource project JMJ and Bigboat

    Why not show the schematic ?

  22. #1422

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    RE: New CDI - opensource project JMJ and Bigboat

    Terrific work John.
    Good to see you stuck to it and have good results. I can remember a few times when you were just about ready to chuck everything in the bin......can get frustrating at times I know. I had to get a few parts from Farnells the other day, so I looked up their spec sheets and had them send up a few of the ferrite cores you mentioned, 13mm ones. I will be overseas for the next 3 months so no "shed" work for me but I will keep a lookout for proceedings.
    Once again, great achievement.......... Jeff

  23. #1423

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    RE: New CDI - opensource project JMJ and Bigboat

    Boys can you post a picture, sckech or any other visual think ?

    Dino,
    Israel

  24. #1424

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    RE: New CDI - opensource project JMJ and Bigboat

    There may be a hand drawn schematic shortly. I never figured out the circuit drawing program I downloaded.

    John

  25. #1425

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    RE: New CDI - opensource project JMJ and Bigboat

    I am adding one feature to the new timer board, a LED timing light triggered from a reverse output pin on the pic chip.
    Anyone think this is a worthwhile feature? Added it to the schematic already. If it is not desired, just eliminate the 4 added parts.

    John


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