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Thanks for the link, Neptronix is a good read, he knows his stuff. Endless-sphere forum is a better natch for me, but I'm still waiting for my confirmation email from registration to be able to post.

Over 10 years ago I went that route when the cost of lithium batteries was about 4X what they are today. I didn't skimp and used high quality Odyssey AGM batteries, 15 ahr, 15 lbs each, and $110 per battery. IMHO today lead is dead.

I'm new to e bikes but have a long history building and racing EVs (electric vehicles). I wonder why some of the well engineered and competitively priced (due to economies of scale) components that we use aren't being used in the custom build e-bikes? I understand the rules for e-bikes, and...

After a lot of previous EV projects I've assembled a good source of suppliers. I decided to spec out all the parts needed for a complete conversion. 1000 watt 48 volt DD hub motor, 26" wheel, battery bag, controller, thumb throttle, and pedal sensor from Amazon. $234.50...

My nephew and his wife and son live in Alameda and I agree, the tunnel would curl my toes too.

"....but getting to the island..." that perked up my ears. Which island? By building your own, you can get what you want. If weight isn't a big consideration, it is hard to find more punch for the dollar than the Etek motor. If you can still find them, they are around $375, add a 48 volt golf...

I know, your correct, but this creation of mine was more than 10 years ago, long before lithium batteries were affordable for EV usage. Now days with me in my 60's and progressive companies like Hi-Power Cycles, my days of DIY are over. HPC can build about anything I could want that through user...

I like their logic, voltage is your friend. PIE says it all, Power (watts) = I (current) X E (volts). High current means more heat, connections and terminals melt, but if you double the voltage you halved the current for the same power. Using the high C rated pouch batteries (I wonder if they...

From my experience of upgrading a Rad to Go electric scooter is any single upgrade will tax the other components to their failure mode. My PWM controller failed on this scooter and since I planned to upgrade batteries and motor at a later date, I went with a 400 amp Curtis controller. Since the...

All my experience is with LiFePO4 large prismatic cells but applies to the small Li Ion cells used on the e-bikes. When I receive cells to build my pack the first thing I have to do is balance them. I have to decide by my intended usage if I should top balance or bottom balance the cells for the...

Thanks JRA, good idea for keeping the bill down on the 2 guest ebikes. I'm currently in California but have shipped out of Tacoma for SeaLand and always thought the area would be nice for retirement. I've biked San Juan Island and it was great and would like to share with friends that and biking...

Just joined, this is my 1st post. Spent last night viewing Court's videos on folding electric bikes, thank you Court. I'm in need of your expertise for the purchase of (3) folding models. I have an unused 1/4 berth on my boat that could hold 3 for trips to the San Juan Islands in the PNW, so...