Category Archives: Harley Tech

Classic Harley Tech: Bosch ZEV Magneto Reassembly, Remagnetizing & Extended Stress Tests (Continued):

As with all the articles in this series on rebuilding a Bosch ZEV magneto, this one is reposted with permission of the author, who requested we not share his name. Long-Term Tester The reason for conducting an extended test is that, assuming … Continue reading

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Basic Pre Ride Motorcycle Check For My 1936 Harley EL Knucklehead

For various reasons I am not able to ride each of my classic motorcycles as much as I’d like to, and sometimes it is months between rides on a specific classic Harley. So I have a basic pre-ride check schedule I go … Continue reading

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Classic Harley Tech – Rebuilding Bosch ZEV Magneto Stress Tests

This latest installment on rebuilding a classic Harley style Bosch ZEV magneto is reposted with permission of the author who wishes to remain anonymous. REASSEMBLY, REMAGNETIZING, AND EXTENDED STRESS TESTS (CONTINUED):StrobotacI normally run long-term magneto tests at 2000 rpm (4000 … Continue reading

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Classic Harley Tech – Rebuilding a Motorcycle Magneto – Reassembly, Remagnetizing & More

This series of articles is reported here with the permission of the author who as asked to remain anonymous. REASSEMBLY, REMAGNETIZING, AND EXTENDED STRESS TESTS:   Finally, this Bosch ZEV magneto is ready to go back together. After cleaning off the … Continue reading

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Classic Harley Tech – Rebuilding Motorcycle Magneto – Mechanical Components & The Cam

This and all previous installments in this series are posted here, with permission of the author who requests anonymity. MECHANICAL COMPONENTS (CONTINUED): The CamAlthough a Harley-Davidson is a “45-degree V-twin,” the HT leads of the Bosch ZEV magneto don’t fire … Continue reading

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Classic Motorcycle Magneto Tech Continued – Mechanical Components

This series of tech updates on rebuilding and/or restoring a classic motorcycle magneto is shared with permission of the author who has asked to remain anonymous. Since the electrical issues seem to be under control, it’s time to turn to … Continue reading

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TESTS AND REPAIRS OF THE CLASSIC MOTORCYCLE MAGNETO ELECTRICAL COMPONENTS (CONTINUED):

As with all previous articles on this topic, this series of articles is published anonymously by the author and with his or her permission.   Brush Spring Pressure In addition to hardness, spring pressure is the other important parameter for … Continue reading

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Classic Motorcycle Magneto Tests & Repairs Of The Electrical Components (Continued) Brush Spring Repairs

This series of articles is shared with permission of the author who wishes to remain anonymous.   In addition to hardness, spring pressure is the other important parameter for a brush. I determined from measurements of the depth of the … Continue reading

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TESTS AND REPAIRS OF THE ELECTRICAL MOTORCYCLE MAGNETO COMPONENTS (CONTINUED):

This is the latest installment of the on-going series of articles on overhauling a classic motorcycle magneto like a Bosch ZEV. As requested by the author this is published anonymously.   Reassembling the Armature Although I have every reason to expect … Continue reading

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Classic Harley Tech – Rebuilding a Bosch ZEV Magneto

This series of articles is reposted with permission of the author, who wishes to remain anonymous. ——— Sidebar (not in chronological sequence) ——— Spoiler Alert! — don’t read this sidebar if you want to wait until the final post to … Continue reading

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