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  1. E-HP

    What could be wrong in motor

    I feel like I’m on a boat. Can you provide still pictures?
  2. E-HP

    Statorade maintenance, time vs miles

    My Statorade has run dry, or at least that's what the evidence is pointing to. I added Statorade to my hub two years ago, and it's been running nice and cool until a few weeks ago. That's when I started noticing the motor getting hot, even on flat ground, when horsing around with some spirited...
  3. E-HP

    nut and bolt maintenance

    Sort of a bike mechanical question, but probably has an ebike component, but what do folks use as far as a maintenance schedule for checking and retightening nuts and bolts on ebikes. I usually check axle nuts regularly, but everything else randomly, and usually when I spot parts about to fall...
  4. E-HP

    lipo alarm operating power

    I'm asking about the small 8S lipo alarms used to monitor lipo packs, and how they are powered. I received two new lipos yesterday and a couple of lipo alarms. I connected the alarms to the balancing leads and the cells were at a storage voltage and balanced within a 0.01V. I left the alarms...
  5. E-HP

    Grin videos

    Throwing out a plug for the videos posted in the last few months by Grin, since I didn't see them mentioned here. The first set is on the use of the Grin Simulator. They are really informative, and even though I felt I knew most of the stuff on the first intro video, there were still a couple...
  6. E-HP

    Controller and Display manufacturers

    I'm working on the section of my NEWB FAQ regarding displays. As far as compatibility is concerned, the general guidance is to purchase a controller and display together to ensure compatibility, and if purchasing separately, purchasing the same brand may provide a better chance of...
  7. E-HP

    Burned out on burnouts

    I think I'm just getting old. I can picture myself in a few years, yelling at kids to get off of my lawn. Luckily I retired recently, so I should be able to unwind more, but things like grocery checkers in long conversations with customers, while their checkout hands sit idle, still irritate...
  8. E-HP

    CA detecting overcurrent erroneously

    I experienced some strange behavior at the end of my ride yesterday, and again at the beginning today. From a stop or from slow speeds, if I twist the throttle, power to the motor is being cutoff, but then would start functioning normally. A first I thought it was a throttle issue, but it only...
  9. E-HP

    Battery pack cells vs construction and voltage sag

    I probably should post this in the battery section, but maybe something discussed here in the past...when it comes to voltage sag for a given pack, how much sag, if any, can be attributed to poor pack construction (other components used for constructing the pack, etc.) versus cell choice? This...
  10. E-HP

    Cable routing

    I've been using these velcro chain stay protectors for routing and bundling my cables and they work out great. Especially for managing the motor cable as it runs along the chain stay. I used to use several zip ties which was a hassle when removing the wheel, but now only use a couple, just in...
  11. E-HP

    e-clothes

    I went out for a ride at around 6:00, while it was still light out. Huge temperature drop from yesterday or even earlier in the day. I had a fleece vest and flannel shirt under my windbreaker, and no gloves. It may be a short cold spell, but it reminds me that cold weather is on the way and...
  12. E-HP

    What are your AGain and WGain settings?

    For folks that have a Cycle Analyst V3.2, I'd like to see what your AGain, WGain, and PLim settings are, including those setting and what the controller rating is and motor used. It's surprising how little information there is regarding these settings, even on the main CA thread. The...
  13. E-HP

    On/Off switch autopsy

    Since I have to swap out my controller with a temporary unit, I'm going to redo my cracked connector box while I'm at it. I have been using a 40A AC breaker as an ON/OFF switch since my initial build, and it has several thousand actuations. I had it hot glued to the inside of my box, so I...
  14. E-HP

    Searching for a spare/upgrade controller

    I popped some of the FETs in my controller yesterday, while messing around tuning my throttle ramp rates. I was slowing the ramp little by little, to just below where the bike would wheelie from a stop or low speeds. I almost had it perfect when I twisted the throttle and the motor let out an...
  15. E-HP

    Q: Sensored controllers

    I'm bouncing a few ideas around in my head, and had a couple things that I was wondering about. With a sensored motor and regen capable sensored controller, does the controller need the hall sensor signals to provide regen? Not necessarily related: With a sensored motor and controller, if you...
  16. E-HP

    BMS when not fully charging a pack

    I testing my logic on how I charge my battery pack and whether the BMS can protect it while charging, with some assumptions about how the BMS behaves (which may or may not be accurate). I charge my 14S pack to 4.15V per cell, or 58.1V, and discharge to 52V, ~3.7V per cell. Here's the logic...
  17. E-HP

    Bafang torque sensor + CAV3

    I did some searching and have found a couple of posts mentioning a Bafang torque sensing bottom bracket and the Cycle Analyst, but not any where the two are used together. I see one listed on Craigslist cheap enough to buy it to experiment with. Since I do a lot of stop and go while riding...
  18. E-HP

    Radvertising

    I was out putting around on my ebike today, and saw this billboard: This is the first time I've seen ebikes being advertised like this locally. It was another sunny day out, and the ebikes and e-other vehicle types, were out in force. This summer, however, I've seen a big increase in DIY...
  19. E-HP

    0-30 MPH with bicycle tires

    I've been playing around with an app call GPS Race Timer on and off. There's a section of road at the bottom of the hill with no traffic, at least for a few hundred feet for testing. I usually do a couple of runs when my battery is charged up, then go for a longer ride afterwards. Besides...
  20. E-HP

    Helper packs

    I've been thinking about this idea for a bit. Typically high capacity cells have lower discharge limits, so there's a trade off between high current output and capacity. e.g. 25R high discharge lower capacity; 35E higher capacity, lower discharge; 30Q in between. My thought is around how to...
  21. E-HP

    CA digital switch - extra button

    The digital +/- switch from Grin for the Cycle Analyst comes with a spec card that describes the function of the buttons and the connections. The middle switch is described as an "Extra button for miscellaneous use", and the wiring spec states "2 wires under shrink tube" for that button. I...
  22. E-HP

    Exploding ebike tire?

    I went on a short errand on my ebike around noon. The bike ran well. A few hours later, while sitting at my desk, I heard and felt a big boom. It was loud and I could swear I felt the house shake a little. My wife came running downstairs and we were certain that something had crashed in our...
  23. E-HP

    Crystalite controller info?

    I've been looking for another controller that will either go with my existing motor when it gets transplanted to a new project, or to go with my new Leaf motor once I finally get around to upgrading my current bike. Similar to the current PowerVelocity controller, I wanted it to be sine wave...
  24. E-HP

    Rear wheel diameter; torque vs acceleration

    I see posts frequently that state that a smaller diameter wheel develops more torque. Now that my 24" rim arrived, and since looks pretty good sitting next to my new Leaf hub, I'm going to go ahead with relacing the wheel. Playing with the simulator before made me hesitate, since the gains...
  25. E-HP

    Sag from cells or from heat/resistance?

    Something I plan to do this winter is open up my UPP hard cased triangle pack to check each parallel group voltage, then inspect the cells and construction. I have two UPP packs and both have worked well, but I've seen posts about the construction of some of their packs, so I'm curious to see...
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