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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

    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...
  3. 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...
  4. ryan

    X5404 freewheel sticks out too far, what next?

    I just got my 5404. 500w sticker attached. But freewheel sticks out 4.5mm from the circle part of the axel. I've measured the inside threads of the freewheel and they correspond perfectly to the threads of the axel, so I cannot tighten it any more. Will a washer between my freewheel and my...
  5. ryan

    Dropout Spreading Techniques

    How do you spread your dropouts for a larger hub? Bonus points for pics. More points for use of simple and readily available tools.
  6. ryan

    How do I wire a hall sensor? (pic)

    Does the label/writing go toward the outside of the stator? Red, black, yellow (in my case)... From left to right? I've got one hall well ready to install but I can't figure out which way to wire it. And my others are covered in epoxy.
  7. ryan

    Crystalyte hub cover screws?

    Mine are stripped. They'll work in a pinch but I'd like to order a box. Any tips on thread size, hex, etc?
  8. ryan

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

    I rewired my phase wires last night and had a great run today until disaster. Mid ride one of my halls blew. Confirmed with Lyen's ebike tester. First I thought it was a short from a spinning axel or something but after rewiring all the hall wires and testing with a magnet the yellow Hall on my...
  9. ryan

    simple 3-speed right/rear shifter recommendation

    I need a 3-speed shifter for the rear derailleur. It's going to stay on the smallest gear 99% of the time, but in the event of a breakdown I may need to shift to the big gear. I'd like something that doesn't interfere with my throttle and is super minimal. Any recommendations?
  10. ryan

    Intermittent Throttle Cutout: SOLVED! Phase Short +VIDEO

    Sometimes I can go a block, others only a few feet before the throttle strangely cuts out. Plenty of battery. Brand new Lyen 18fet controller & throttle. Same thing happened on my other controller and throttle. HVAziqCZheM 833oWF7uEn4 Apologies for shaky video. I had to hold the front down...
  11. ryan

    Crystalyte mini xlr hall wiring numbers

    Can someone tell me or link me to the mini xlr numbers for red, black, yellow, green, blue? Mine are all heat shrunk up and I'd rather not do it again. Thanks.
  12. ryan

    Throttle Cutting out & Buzzing sound [VIDEO] - help debug!

    I made another commute attempt this morning only to be greeted with some throttle cutout. I thought it was due to Method's LVC Throttle retard so I checked out the cells with the battery medic. ~4.1v everywhere and the HVC button wasn't tripped either. So I connected a brand new throttle...
  13. ryan

    How do you keep jsts connected?

    I know the zip tie trick with andersons. What about 6S JSTs? A ride the other day was cut short due to only 6 of 7 pins connecting.
  14. ryan

    Conscious Commuter eBike making waves at SXSW

    Anyone know these guys? Anyone at SXSW this year taking a look? What do you think? http://www.consciouscommuter.com/ I4f6yApey_w 2duvJnUlj3E 3r3T4tSu_nM Designed by Gabriel Wartofsky Article in Good.
  15. ryan

    Spin freely 10s then cog heavy 5s?

    Why would this happen? Even without applying any throttle. Even when switching off power. Setup: 18S4P lipo connected to Methods LVC/HVC system then to Lyen 18fet controller then to Crystalyte 5304. I'm at 73.4v, and Methods throttle retard (I believe) is also acting up. Went strong for 3Ah /...
  16. ryan

    Shorting Phase Wires for Security

    I've read about folks here adding a hidden switch that shorts / crosses the phase wires on purpose when parking to make it very difficult to do anything but pick up the bike and run. But I don't think I've ever seen photos or diagrams of what's exactly necessary to do this. Can someone walk me...
  17. ryan

    Do your circuit breakers ever trip from vibration?

    I'm getting ready to install a circuit breaker and I'm nervous about it tripping due to vibration or bumps. I can trip the breaker by slamming it into my other hand pretty hard. Just curious if others have experienced a power cutout due to bumps.
  18. ryan

    Precharge for dummies

    Alright, please help me out here. I have a switch and a resistor. Now what order do they connect? The switch: The resistor: The switch has 3 poles: labelled [1],[2],[3]. I'm thinking: pack --> [1]switch[3] --> resistor --> controller Is this right? What's the 3rd pole for on the...
  19. ryan

    Are there any rules in the order to connect LiPo for S & P?

    Title says it all. What rules are there for connecting LiPo in series and parallel? I'm plugging in 18S4P. Do I plug in the balance connectors first (to the HVC/LVC board)? Then the parallel, then the series? Does it matter?
  20. ryan

    Paralleling LiPo wires - Best Practices

    I need to build at least a dozen wire joins with 2 or 3 wires merging into one. I did a bunch of experimentation today with different sized bullets (5.5, 6 and 8mm). Here's what looked the best: 2 or 3 5.5mm bullets with 10awg wire fit nicely into a 8mm bullet. Heat shrink later. Am I on...
  21. ryan

    Best Practices for Labeling LiPo?

    I've got 12 bricks of LiPo waiting to be bundled in an 18S4P, 2kWh pack. Are there any best practices for labeling these packs? Simple numeric: 1-12? Bundled by grouping: A1-A4, B1-B4, C1-C4? By location (left, right, front, back) : L1-L6, R1-R6?
  22. ryan

    Can I use an old Lab Power Supply to charge LiPo directly

    My friend has a 0 to 80V / 0 to 18A DC Power Supply salvaged from an old office. It works fine, but it's a little roughed up. It's one of those huge old rack server power supplies. Can I just plug that into any old US outlet and adjust the power to 75v10A and let her ride?
  23. ryan

    DIY JST-XH Extensions ... where can I buy the parts?

    I may need some extra long JST XH extensions for my build. HK sells little 20cm extensions, but I may need something longer. Any tips on parts?
  24. ryan

    Gold Bullet Connectors - Which size for 18S? 4, 5.5, 6, 8mm?

    I'm planning a 18S4P pack with 6S1P 8Ah 30C Zippy LiPos. They come with 5.5mm bullets, but is that enough? I also have a hundred or so 4mm connectors laying around. HobbyKing lists their ratings accordingly: 4 = 93A 5.5 = 100A+ (I can't find anything more specific) 6 = 120A 8 = 170A I like...
  25. ryan

    How precise are HobbyKing LiPo dimensions?

    I'm looking at the 6S1P 8Ah Zippy LiPo and they say each pack is 165x69x52mm. Should I count on an extra mm each way? Or 5mm extra? Or none all?
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