Differences

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--- techtalk:ref:genmsr02 [2019/09/19 05:13]
hippysmack [Before Reading Them]
+++ techtalk:ref:genmsr02 [2022/02/11 22:24]
hippysmack [Quick Check Visuals]
@@ Line 32: / Line 32: @@
   * The best readings are taken by running the vehicle at sustained speeds in the range that you are checking. \\ (I.E., “Wide Open”, Mid Range”, “At or near Idle”) \\ Then disengaging the clutch, killing the engine cleanly, and coasting to a stop.
   * Overall readings can still be taken without a clean kill and stop, even without new plugs. \\ This is still very accurate, and one of the best tune up tools you have. \\ Just make sure that you have good plugs and by keeping an eye on them as you make changes you can read the effect that the changes made. \\ This just requires a mental track record or a written one.
 ====== The Plug Chop Method ======
@@ Line 48: / Line 49: @@
 You now have a pretty good idea of the state of your plugs at the important throttle openings. \\
+Please keep in mind that different types of gas will give different readings. \\
+Also, that race or av gas is more prone to oxidization and storage deterioration, along with the fact that a multitude of types are used worldwide. \\
-====== Where to read them ======
+Racing applications: ((http://www.keihincarbs.com/tips/gate.html)) \\
+When jetting the main jet, try to remember to jet for the best power for a given track. \\
+An example of this is endurance where you would want to run a main large enough to keep the engine cool. \\
+This means that you may be on the rich side but the engine will fade less towards the end of the race. \\
+Another situation could be a stadium sx track where you spend much more time on the low to mid circuits. \\
+In this case you may be running a main jet that is much smaller than your usual "outdoor" jetting along with a hotter/extended electrode plug. \\
+As you gain experience and knowledge, you will be able to use other methods to determine your jetting. \\
+A good tuner can "feel" most of the circuits by slowly revving a parked bike, or just by looking at the color of the unpainted pipe and silencer. \\
+But in the mean time always remember to change only one calibration component at a time. \\
+The best trackside method to determine the size of the main jet is to fully load the engine on a long straightaway or hill. \\
+At the end of the stretch chop the throttle and hit the kill button simultaneously. The plug is then pulled for a "reading". \\
+====== Where to read them ======
+{{ :techtalk:ref:genmsr:line_diagram_of_spark_plug_1_by_hippysmack.jpg?direct&300|drawing by Hippysmack}}
   * Heat range and timing:
     * The porcelain is used for reading plug heat range, and timing only.
@@ Line 60: / Line 76: @@
 We are only concerned with a good sound engine for fine tuning purposes. \\
+For reading WOT position, inspect the positive electrode and the last 1/4 of the ceramic insulator. ((http://www.keihincarbs.com/tips/gate.html)) \\
+Best power will usually result in a very light tan colored insulator tip and dark colored ring around the tip of the electrode. \\
+The electrode itself should have fairly sharp edges. \\
+Example: \\
+If the ceramic insulator has a nice tan coloring but the electrode has a white ring around the tip (and plug is in correct heat range), then you can easily run a size larger main jet. \\
 ====== How to Read Them ======
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