SUMMARY
In this episode, we dive back into the workshop and focus on Dynamo hubs!
Sean discusses the basics of Dynamo lighting systems, shares repair tips, and offers troubleshooting advice for mechanics who might not be as familiar with electrical systems. He reflects on the evolution of bike lighting, from old bottle dynamos to modern hub systems, and highlights his experiences dealing with Dynamo setups in bike shops. Tune in to learn how to diagnose and fix Dynamo lights, and discover which products are best suited for different types of cycling.
Key Points:
- Dynamo lighting systems have been around for decades, evolving from inefficient bottle dynamos to modern hub Dynamos.
- Many mechanics, especially those focused on high-performance bikes, may not have been formally trained in Dynamo systems but can easily pick it up with a bit of practice.
- Sean shares tips on repairing Dynamo systems, including checking for wiring issues, using a multimeter, and ensuring proper water protection for long-term durability.
- Practical advice on how to troubleshoot wiring and connections, especially when dealing with internal routing.
- Discussion on the types of Dynamo hubs available, from high-end Schmidt SON hubs to budget-friendly Shimano options.
- Dynamo lights are becoming increasingly popular for bike packing, commuting, and city bikes due to their ability to power lights and charge devices on the go.
Products & Resources Mentioned:
- Sinewave Cycles Beacon – A Dynamo-powered light and charger, great for bike packing.
- Bottle Dynamos – Early lighting systems that ran by friction on the tire, now largely replaced by hub dynamos.
- Shimano Dynamo Hubs – Affordable and common on city bikes, ideal for commuters and bike packers.
- Schmidt SON Dynamo Hubs – High-end, reliable, and efficient, but with a premium price.
- Bush & Müller Lights – Popular choice for Dynamo lighting systems across Europe.
- Exposure Lights – Excellent option for off-road and bike packing use.
Repair Tips & Tricks:
- Testing Lights: Use a 6V battery to test if the lights are working before checking the wiring.
- Using a Multimeter: Essential for diagnosing issues in the Dynamo system, like checking voltage output from the hub.
- Handling Wiring: Don’t be afraid to completely redo the wiring if needed; make sure to use quality connectors and shrink wrap for durability.
- Internal Routing: Can be tricky, but worth the effort for a clean, reliable setup—use inline solder connectors for quick repairs.
- Avoid Radial Lacing: For Dynamo hubs, three-cross lacing is better to avoid excess vibration and ensure durability.
Listener Takeaways:
- Don’t be intimidated by Dynamo systems! They’re simple to work on with the right approach and tools.
- Proper diagnostics and attention to detail with connections will make Dynamo systems reliable for long-term use.
- Dynamo hubs are ideal for touring, commuting, and bike packing but might not suit high-performance road bikes due to minimal drag.
Call to Action:
If you enjoyed this episode, please leave us a review on Apple Podcasts or wherever you listen to podcasts! It helps more people discover the show. Don’t forget to share this episode on social media with #CycleSystemsOnline and let us know if you’ve had any Dynamo-related challenges or triumphs. See you next time!
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