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techtalk:ref:elec30 [2020/02/08 23:30] hippysmack [Hopper's 1977 XLCH] |
techtalk:ref:elec30 [2020/02/08 23:33] hippysmack [Broken Horn Bracket] |
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| ====== Broken Horn Bracket ====== | ====== Broken Horn Bracket ====== | ||
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| - | ===== The Doctor71'S 1974 xlh ===== | ||
| - | Horn brackets that are mounted along with the key switch between the cylinders has been known to cause meltdowns. \\ | + | The horn bracket that is mounted along with the key switch between the cylinders has been known to cause meltdowns. \\ |
| - | The fact of the bracket breaking (due to being loose, vibration, age etc,) isn't the problem. \\ | + | The fact of the bracket breaking (due to being loose, vibration, age etc,) isn't the problem (electrically speaking). \\ |
| The key switch terminals are bare ended (no insulation). \\ | The key switch terminals are bare ended (no insulation). \\ | ||
| Should the horn bracket break, the horn will (most likely) swing down & rest on the back of the ignition switch for awhile, shorting the terminals. \\ | Should the horn bracket break, the horn will (most likely) swing down & rest on the back of the ignition switch for awhile, shorting the terminals. \\ | ||
| The subsequent dead short heats up the wires, melting them and triggers the carnage shown below. \\ | The subsequent dead short heats up the wires, melting them and triggers the carnage shown below. \\ | ||
| At this point, the motor is dead, no lights, no nothing. You're stranded on the side of the road, wondering just what happened. \\ | At this point, the motor is dead, no lights, no nothing. You're stranded on the side of the road, wondering just what happened. \\ | ||
| + | ===== The Doctor71'S 1974 xlh ===== | ||
| - | This happened to a 74 XLH all initially started by a broken horn bracket: \\ | + | This happened to my 74 XLH and all initially started by a broken horn bracket: \\ |
| This particular bike did not come with a fuse wire installed from the factory. So the main circuit was unprotected. \\\\ | This particular bike did not come with a fuse wire installed from the factory. So the main circuit was unprotected. \\\\ | ||
| See the 'before' pic of the horn / switch brackets below (taken ≈ 8 months prior to my catastrophic event). \\ | See the 'before' pic of the horn / switch brackets below (taken ≈ 8 months prior to my catastrophic event). \\ | ||
