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  1. ryan

    Porsche announced 2 ebikes: Sport and Cross

    Anyone know about the specs? All the site says is This article doesn’t settle it either: https://www.theverge.com/2021/3/4/22313508/porsche-electric-bike-ebike-sport-cross-specs-price From the article: Either way, it’s fun to see a Porsche product advertise a top speed of 25km/h. Can you...
  2. ryan

    Best Kit Parts available on Amazon

    This is fantastic! Saving a link that leads to their products: https://www.amazon.com/s?k=Grin+Technologies
  3. ryan

    Best Kit Parts available on Amazon

    How about 48V 20Ah Triangle Ebike Battery from UPP Factory for $389. With the "Leaf"-like kit you found for $399: (though reviews share I should have low expectation for shipping times)
  4. ryan

    Best Kit Parts available on Amazon

    As long as it's on Amazon, it's okay. It can be a full kit. Or a batteries-not-included kit, so long as there's a reasonable battery for the kit on Amazon. Or from all separate vendors. I don't recognize the vendors anymore and don't want to end up with garbage. I trust ES experience 1000%...
  5. ryan

    Best Kit Parts available on Amazon

    I have an opportunity to build an ebike for a school project, so long as all parts are purchased through a tight list of approved vendors (essentially limited to Amazon as far as ebike parts are concerned). I have a 26" donor schwinn, ~$1000 of budget for motor, controller, battery, and cycle...
  6. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Quick FYI, unfortunately I need to pause the build. A car accident (everyone ok) is reallocating resources away from the bike fund. To be continued...
  7. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Wow. The Edgerunner looks nice, but why o why is it twice as expensive as a Mundo? Perhaps that's why there's no used ones, anywhere.
  8. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Alan, I just read your BBSHD build article on Eric's site. Very impressive. And I also just got caught up with your post above. Thanks so much. You're making a very good case for the BBSHD. And I remember that Marin hill very well. I stayed up most of the night prepping 72V20Ah of Headways for...
  9. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    To fit Dogman's suggestion of 3000wh, and Alan's recommendation of Luna Cycles and to use 18650 packs, here are a couple of options for battery power. 1) 4x 72V11Ah 18650 pack — $549ea (via Luna Cycle) — $2200 This gets me 3300wh, and at 72V, a lot more top end speed. 2) 4x 52V20Ah 18650 pack...
  10. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Thanks for your help dogman. I love the new 20" build! And the edgerunner looks fine, but I rode a $5k downhill bosch PAS middrive yesterday and while I was impressed with the technology, I was underwhelmed by the performance. If I haven't already been spoiled by ES and my very torquey, very...
  11. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Thanks for your feedback. I know it's a tall order. But building bikes with challenging goals is part of the fun for me. I plotted the route: https://www.plotaroute.com/route/243264. It goes clockwise around the lake, starting (and ending) at Zephyr Cove Resort on the Nevada side in South Lake.
  12. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Whoa! These Tangent Drives are awesome! This is the sort of tech improvements I was hoping to see since I've been missing from ES. Are you familiar with these? Will this make my power use more efficient since I can use the rear gears? How's the noise level? Is it loud due to chain and small...
  13. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Thanks Alan. You're right about the Tahoe loop feeling dangerous. I hope that going out ahead or behind the actual event will help keep me safer, roads being closed and all. Looks like I can get 52V80Ah with 4 of these 18650 packs (10lbs each) from Luna Cycle for $2500. 2 on each side of the...
  14. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Thanks Wes. Well that's an entirely different budget isn't it?! So you're saying you would do the Tahoe loop under 3hrs with 2.5Kwh Hobby King LiPo on a 48V 1000W eBay kit on a cheap bike? All for under $1k? I know I've been out of the game for a few years, but I have a hard time believing tech...
  15. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    I'm not sure my budget is realistic. I've been trying to get up to date on battery tech. I imagine I'll need at least 60Ah (~3kwh at around 50V) to make the Tahoe loop and I'm having a hard time identifying the right balance of cost and density. For example, I could get 3 packs of 51.8V 20Ah...
  16. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    Thanks for the help. I'm not sure I'd be comfortable on a recumbent, safety wise. I can't imagine commuting through a city with a low bent. People are already on their phones while driving. Making myself less visible isn't attractive. I have been looking into HPC's LiNMC batteries. But I think...
  17. ryan

    Build: $5k bike for 72mi Lake Tahoe loop in under 3hrs

    My custom built Yuba Mundo was just stolen :cry: Now it's time for a new ride, with a new goal. I'd like to build a bike for two purposes: 1) 72 miles around Lake Tahoe in under 3 hours, with minimal assistance. (Avg 24mph) There's a bike race around the lake on September 11, 2016. So if I get...
  18. ryan

    Kuberg Free Rider

    When I saw that it was based in Santa Cruz I was hopeful this was a liveforphysics production.
  19. ryan

    Shy Spy, hide a GPS tracker inside your seat-tube

    Just backed. Very slick. Been researching pay-as-you-go data SIM cards as well. Found a T-Mobile reseller Lyca Mobile for $0.06/MB with free SIM card http://www.lycamobile.us/en/national-plans Others have recommended Truphone: http://uk.truphone.com/personal ($0.15/MB) I expect data to be...
  20. ryan

    Mundo for the Wife?

    Check out Jordan at Wine Country Cargo Bikes. I got a demo v4 plus accessories for a song.
  21. ryan

    New Crystalyte 5403 Review by Doc

    Just busted a hall sensor on my new 5404. Recording it here for reference and catharsis. :cry:
  22. ryan

    Why do Hall Effect Sensors break? (UPDATE, AGAIN w new 5404)

    15 miles, low speed (20mph), low volts (72v) low amps (0-30A), on a motor specifically designed to avoid over heating. Motor wasn't even warm to the touch. I feel like I have a hardware virus that attacks hall sensors. :cry: Is there any reason my controller would cause this?
  23. ryan

    Why do Hall Effect Sensors break? (UPDATE, AGAIN w new 5404)

    Alright I just went 15 miles on my brand new 5404 without a hitch, then hall sensor busted again. Brand. New. Motor. Everything else the same. Dropout axel wires look solid. What on earth could cause this?!!!
  24. ryan

    X5404 freewheel sticks out too far, what next?

    Thanks everyone. I bought some 10mm washers and drilled out the middle to 14mm. This should do until I replace my 3 speed with something decent. (any recommendations?)
  25. ryan

    X5404 freewheel sticks out too far, what next?

    Here's some measurements. Looks like they may have shipped a crazy big 3speed freewheel.
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