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Anyone here really? What? A timing light just for us.

Discussion in 'Gas Engines' started by acerc, Jun 16, 2019.

   
  1. acerc

    acerc 640cc Uber Pimp

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    If the little sensor tester does not work I'll give your method a shot.
     
    49dimes and Alky6 like this.
  2. 49dimes

    49dimes Damn I'm hungry

    Did you get an ignition tester or a timing kit?

    Tester..... IMG_0763.jpg


    Timing kit (old style)….. QT0203000100-04.jpg

    And I am wondering if you really just need to know if the magnet(s) on your Dub have a N or S polarity facing upwards?
    Some 3W ignitions use N side polarity facing up and some with two magnets both N and S where as RcExcel ignitions use the S polarity facing up (it is the stronger magnetic field).
    Also the Rcexel sensor needs to face correctly. It is a semiconductor that has a "beveled" side and a "full flat" side.
    The "beveled" side needs to face the magnet in the prop hub.

    In the picture you can see the "Beveled side" is facing up.

    th81UGTIIQ.jpg
     
  3. acerc

    acerc 640cc Uber Pimp

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    The RCEXCEL is in and functioning, that part is easy to do. Use to be one could rotate the prop hub slow enough to stop dead on when the plugs fired, but they changed it to require a quicker operation. I am getting the Hall sensor tester, it is powered by two watch type batteries, emits a sound and the led flashes when the sensor is set off. This led is what I am hoping is bright enough to light the timing marks when rotated quickly.
    Everything is in and working, it even runs good. I just don't like not knowing the timing is right where it should be. If it is advanced there will be more power but also greater heat and more fuel consumption, I don't want more power that way and definitely don't need more heat.
    And I am using the premade sensor that came with the ignition which is made for the engine.
     

    Attached Files:

    Last edited: Jun 19, 2019
    49dimes and Snoopy1 like this.
  4. 49dimes

    49dimes Damn I'm hungry

    Ok got it. The newer timing kit I posted earlier is the same thing. I don't think the LED's would give off the correct wave length of light like a Xeon light or plasma arc will. Once you have "mapped" the crank shaft and made your marks could you just use some reflective tape and an inductive timing light ?
     
    Snoopy1 likes this.
  5. acerc

    acerc 640cc Uber Pimp

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    I agree, it may not work but it's worth a try. I don't think an inductive would work with the grounding sleeve covering our wires, but not sure about it.
     
  6. Snoopy1

    Snoopy1 640cc Uber Pimp

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    One question when you start spinning the motor with a drill how will you know where the timing will be. The timing changes with speed. Unless you know the advance curve I think you will not get the correct timing. Unless you know at what rpm you get full advance and make sure you are above that.
     
    49dimes likes this.
  7. acerc

    acerc 640cc Uber Pimp

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    The drill on low is only 400rpm, not even close to idle speed so the timing should still be at start level.
     
  8. acerc

    acerc 640cc Uber Pimp

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    I guess the tester is going on an extended trip because it is not going in the direction it should be... Freakin postal service, they suck!
     
    49dimes likes this.
  9. 49dimes

    49dimes Damn I'm hungry

    Yea Postal Service :devil-dance: :laughing:. Just a note....the ignitions like the Rcexl start to advance around 2000 rpm and are fully advanced around 4000 rpm. Also I have read that at first "Power up" the timing defaults to about 2 degree's BTDC for safe starting (less chance of kick back).
     
    acerc likes this.
  10. acerc

    acerc 640cc Uber Pimp

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    That is similar to what Milton at RC Extreme power told me. But it does no good if I have to spin the prop to fast to be able to stop instantly when the plug fires, hence a timing light.
    This morning the USPS showed the package going a different direction but as of twenty minutes ago it say out for delivery to me. So I should know this afternoon whether it is going to do what I am looking to do.
     
    49dimes likes this.
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