Category Archives: Harley Tech

Classic Harley Tech – Penetrating Oil Bath or No?

On the advice of a friend who has been messing with classic Harley and Indian motorcycles about as long as I have, I bought and sprayed a can of Gibbs penetrating oil all over my mostly original paint 1924 Harley … Continue reading

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Classic Harley Panhead Cutaway Engine

We can’t decide if this is art or something else, but we here love it. A cutaway Harley Panhead engine. Sometimes the Harley factory training department created these cutaway engines for use in the school to show the mechanics how … Continue reading

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1928 Harley JDH Two Cam Classic Motorcycle Project

I have long been fascinated with early Harley twins, especially the J series models from the 1920s. The most exciting of these street bikes was the limited production JDH “Two Cam” hot rod Harleys produced and sold in 1928 and … Continue reading

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1948 Harley Panhead Clean Up & Generator Issues

After buying it as a rolling bascketcase, I have owned and ridden this 1948 Harley Panhead for almost a decade. Project Crustoration 1948 Harley Panhead right side. I bought this 1948 Harley, first year Panhead as a rolling basketcase and … Continue reading

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Sealed 6-volt Battery In Classic 1948 Harley Panhead

Are you tired of the old style wet cell batteries that came standard in classic Harleys? Me too. Enough with checking fluid levels and topping off. Enough with the corrosion on the battery terminals and wires. Me too. I figured … Continue reading

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1921 Harley-Davidson Blanked Off Classic Twin Motorcycle Racer Part 1

This is the first part of a 2-part article on his replica racer by David Morrill on his excellent blog http://dlmracing.blogspot.com/. We are sharing it here with his permission. We will share part 2 in a week. This project started … Continue reading

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Classic Harley Tech: Final Article On How To Rebuild a Bosch ZEV Magneto

This is the final article in this series on rebuilding a Bosch ZEV motorcycle magneto. We hope this has been helpful to those of us interested in such matters. With the author’s permission, we have identified him at the end of this article. … Continue reading

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Classic Harley Motorcycle Tech: Rebuilding a Bosch ZEV Magneto – Final Tests

This is the next from last article in this series reposted with the permission of the author, who has asked to remain anonymous. FINAL TESTS: Finally, we’re in the home stretch. This Bosch ZEV magneto has passed all my electrical … Continue reading

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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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