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Post by artgod on Mar 9, 2013 18:36:51 GMT -6
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Post by alleyoop on Mar 9, 2013 20:07:30 GMT -6
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Post by artgod on Mar 9, 2013 22:43:23 GMT -6
Thanks I fixed my links sorry,
Do you know how to test the coil to see if its bad to see if it even needs to be replaced?
Thanks - Tj
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Post by alleyoop on Mar 9, 2013 23:07:09 GMT -6
The coil you can only test for continuety to where it plugs onto the plug. It creates a lot of voltage when working. Have you adjusted the POINTS on it. Turn the crank to the high point to where the points open up and adjust the points on it. I do not know what the gap should be but it may be that they either are not opening up in which case no spark.
WHAT IS THE VIN NUMBER since the parts go by VIN NUMBER OF THE SCOOT.
Alleyoop
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Post by JR on Mar 10, 2013 7:12:47 GMT -6
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Post by terrilee on Mar 10, 2013 7:43:57 GMT -6
can i see a pic of this classic???
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Post by justbuggin2 on Mar 10, 2013 10:29:03 GMT -6
i would say that your points and codenser to be first to replace as those are the parts that will go bad first when you replace the points set the gap at .016 in will be a good starting point been awhile but had points type ing on the vw and that is what was the big cause of no spark
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Post by artgod on Mar 10, 2013 13:38:47 GMT -6
Here is my pic album for my restore so far - I purposefully bought the vespa in 200 different parts from ebay to learn everything about the vespa. imgur.com/a/gqKUK#0My Model and Vin number is - V5B3T - 312767 I did some more testing today using a 6v battery. This is what I did step by Step. (and I got a spark) 1. Connected a wire from the 6v positive side to the non moveable part of the points. 2. Wire up the coil the way it normally would be and connected a spark plug. 3. put a piece of paper between the points 4. Wried up the negative side of the battery and took that wire and touched the movable part of the points. SPARK! on my spark plug. What I think I learned from this: My Coil is good and my condenser might the the cause of no charge getting to the points. And my next question is why am i not getting a charge to my points? Am I correct in this thinking? |
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Post by artgod on Mar 10, 2013 13:46:35 GMT -6
[/img] JR[/quote] Thanks I have the manual already and this is a Kick start without a battery. The scooter is completely disassembled and no wiring is coming from the kill switch. Thanks for the help! |
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Post by JR on Mar 10, 2013 20:50:29 GMT -6
I can answer the why you're not getting a spark through the points but I need to verify if the manual you have is the same as one in our tech section and if so which one for sure? I can look at the wiring diagram and tell you and I have an idea as to why now.
JR
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Post by artgod on Mar 10, 2013 22:37:23 GMT -6
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Post by JR on Mar 11, 2013 5:56:39 GMT -6
Here is my pic album for my restore so far - I purposefully bought the vespa in 200 different parts from ebay to learn everything about the vespa. imgur.com/a/gqKUK#0My Model and Vin number is - V5B3T - 312767 I did some more testing today using a 6v battery. This is what I did step by Step. (and I got a spark) 1. Connected a wire from the 6v positive side to the non moveable part of the points. 2. Wire up the coil the way it normally would be and connected a spark plug. 3. put a piece of paper between the points 4. Wried up the negative side of the battery and took that wire and touched the movable part of the points. SPARK! on my spark plug. What I think I learned from this: My Coil is good and my condenser might the the cause of no charge getting to the points. And my next question is why am i not getting a charge to my points? Am I correct in this thinking? By your testing alone you have eliminated one source of the possible problem. We know the coil is good. The condenser does not produce voltage and if everything else is ok you will have spark even if the condenser is no good. The only time a condenser can cause no spark is if it's shorted to ground. Primary voltage to the coil runs through the points. The points are closed most of the time, and this is when the magnetic field builds up in the coil. When the points open, the field collapses, and the spark is sent to the spark plugs. The condenser allows the points to open without arcing or burning. It gives voltage a place to go when the points open. Points must stay closed for a certain amount of time, or dwell. This allows a large enough magnetic field to build in the coil to produce a strong enough spark for ignition. The points must also be gapped at a certain distance. If the distance is too large, spark will be weak. If it is not large enough, the magnetic field in the coil will not completely collapse, producing weak spark as well. Dwell is measured with a dwell meter, and gap can be measured with feeler gauges. The problem is that when the magnetic field collapses in the primary circuit, a short voltage spike is introduced to that circuit as well. The condensor/capacitor absorbs this voltage spike. Since you have no battery then the voltage that is supplied to the coil is from the stator Itself and if it is not producing voltage you'll have no spark.  Since we know the coil is good by your simple but effective voltage test to the points then the next step is to check out the windings in the stator. One could have a break in the circuit that you can't see or a burnt winding. You could unhook the condenser to see if it will spark to eliminate the possibility of it being shorted out but I'm doubting this. Also the points have to be clean and set right. JR |
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Post by artgod on Mar 11, 2013 9:33:37 GMT -6
Thank you for the extra detail!
What I have done since I last posted was I pulled the bottom winding and soldered the connections again cleanly and pulled the points and condense and currently buying a set of online.
When I reinstall the point I'll try to set the timing gap properly. Is there an easy way of doing this or is it all trial and error?
Thank you again for the information.
TJ
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Post by justbuggin2 on Mar 11, 2013 9:55:55 GMT -6
just make sure the part that rides on the cam to open them is on the peak of the cam set with a feeler gauge and double check thethat they open and close add a little oil to the felt it will help keep them form closing up due to wear on the points
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Post by artgod on Mar 12, 2013 8:20:03 GMT -6
Thank you so much for the advice but.... I'm sorry can you talk to me like I'm Five, not sure what you mean by "peak of the cam set" or "feeler gauge"
Again Sorry - Noob Here.
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.scootermercato.com/Scooter-Parts/Ignition-Coils/132299
..BAD TO THE BONE..
