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  1. mrbill

    Cycle Analyst V3 preview and first beta release

    Hi Folks: I took apart another identical motor that had also been run into high temperatures and discovered that it, too, appears to have less Statorade in the stator-magnet gap. While both motors were well-sealed, using a formable gasket of the type used to seal oil pans with automobile...
  2. mrbill

    Cycle Analyst V3 preview and first beta release

    Since I requested this enhancement to the temperature parameter configuration, I have made some further discoveries. For several years on all of my motors I have been using these NTC thermistors with an apparent beta of 2700. (Since my calibration table included in a prior post was generated...
  3. mrbill

    Cycle Analyst V3 preview and first beta release

    Any chance you could in some future release parameter-ize the NTC temperature sensor data by allowing the user to enter the resistance at 20C, beta, and optionally, the pull-up resistor value? This would allow for most or all varieties of NTC sensors.
  4. mrbill

    Cycle Analyst V3 preview and first beta release

    Hi amberwolf: Thanks for the reference. I plugged in a bunch of different value off my worksheet, and I get a beta between 2600 and 2800--my data are a bit noisy. Unfortunately these figures are a ways off the two available parameters in the 3.2b2 firmware: beta = 3450 or 3900. I suppose...
  5. mrbill

    Cycle Analyst V3 preview and first beta release

    Hi Folks: I recently updated my CA3 firmware to the latest beta version 3.2b2. Oddly, I saw no announcement of either this beta or the prior on this thread. Most of the changes add different options and modes for regeneration (motor braking) implementation. One of the changes I discovered...
  6. mrbill

    Cycle Analyst V3 preview and first beta release

    Hi P3yot3: Glad to hear you're up and running and that Grin has their firmware repository accessible again.
  7. mrbill

    Cycle Analyst V3 preview and first beta release

    I just did a quick check and was able to download two beta firmwares from ebikes.ca. So, I would say that you probably still have a network glitch somewhere in your system and that it is NOT an ebikes.ca being offline problem.
  8. mrbill

    USB fast-charger powered by e-bike battery

    Hi Chalo, good to hear from (and see) you. That visit was almost six years ago! Time flies. I haven't been posting much lately to E-S as I've been very happy with my current e-bike systems--current issue excepted--and have been mostly out there enjoying the riding, doing routine maintenance...
  9. mrbill

    USB fast-charger powered by e-bike battery

    I know that most cheap USB chargers are of marginal quality. But, since I'm only working with a system voltage of around 50Vdc I figure a failure of the sort anticipated by the makers of those videos is unlikely. I tried using the "Turbo" charger that came with my phone. Plugged into the wall...
  10. mrbill

    USB fast-charger powered by e-bike battery

    Hi Amberwolf: Thanks for your reply. I've built a USB charger using an old USB socket and a QST 3A DC converter of the type sold by EM3EV and others a few years back, but that only produced at most about 300 mA, and that was after following the instructions to short the data wires or whatever...
  11. mrbill

    USB fast-charger powered by e-bike battery

    Hi Folks: Does anyone know of a USB charger that will push at least 1 Amp when its input is hooked to a typical e-bike battery, say 20-100 VDC (or if that's asking too much, then 44-60 VDC)? For the last few years I've been using some cheap 120/240 VAC USB chargers that function as a charger...
  12. mrbill

    Cycle Analyst V3 preview and first beta release

    I have the same problem: Coast down a hill on a road with a dip at the bottom followed by a climb, and the bike speed drops way below the speed limit before motor power kicks in. Using firmware version 3.12 I recently spent some time trying to improve the speed regulation when transitioning...
  13. mrbill

    Cycle Analyst V3 preview and first beta release

    Thanks, Justin, for acknowledging this particular and peculiar usage case. The local public lands managers in my area are investigating the possibility of allowing on some of their trails, perhaps on a trial basis, "Class 1" e-bikes. In preparation of this I'm dusting off my Class 1 or "Legal"...
  14. mrbill

    The Cycle Satiator, universal charger for the enthusiasts

    An 8v drop is too much over the winter under such storage conditions, unless the BMS is defective. If you have one of the Bluetooth BMS in the EM3ev battery, check the cells for good health. Then I'd contact EM3ev to get advice. If they are unable to help, you'll have to open up the battery...
  15. mrbill

    Cycle Analyst V3 preview and first beta release

    Unfortunately, I'm already using the Aux Pot as a power limit control and the Aux Digital as a graded speed limit control. My solution for now is simply not to use the "Legal" mode where my throttle is disabled at any speed unless I'm pedaling, unless I have reason to believe I am likely to be...
  16. mrbill

    Cycle Analyst V3 preview and first beta release

    Well, yes, may be true. But, the ostensible purpose of the "Max No-Pedal Speed" limit is to prevent driving (powering) without pedaling to achieve compliance with regulations, not to constrain speed when the throttle repurposed as a brake lever is moved from its resting position. It is odd to...
  17. mrbill

    Cycle Analyst V3 preview and first beta release

    I'm looking to find a solution to a problem with my CA3 that I discovered yesterday while running my bike in e-bike "Class 1" mode. Class 1 e-bikes in California are limited to a speed under power of 20mph (32 kph), 750 watts (presumably "brake motor power" not input power), and throttle use...
  18. mrbill

    The Cycle Satiator, universal charger for the enthusiasts

    While I haven't tried using two Satiators to charge one battery, I have run a Satiator and one or more cheap chargers in parallel when charging one battery so that I could get a fast charge. Works as one would expect and damages neither the chargers nor the battery, assuming one doesn't exceed...
  19. mrbill

    ASI Acclerated Systems controllers BAC2000 review

    In BacDoor under Peripheral Configuration -> Basic Motor (sensored or sensor-less) The last field in the right pane is "Motor features". Bit 0 swaps Phase A <--> C (which reverses rotation direction). Bit 0 is the right-most bit and can be set to 0 or 1.
  20. mrbill

    ASI Acclerated Systems controllers BAC2000 review

    Hi kmv: It would help the helpers to know what kind of motor you are trying to tune. Some of us have had trouble tuning motors that run power through the bicycle's chain and sprocket. I have included a working parameter file for the BAC2000 driving a 35mm direct-drive hub motor (kv around...
  21. mrbill

    "Edge" DD hubmotor, 1500W, 35mm, Al core

    If the motor you ordered has at least one working Hall sensor, then it has a "speed sensor" as far as the Cycle Analyst is concerned.
  22. mrbill

    Compact Field Oriented Controller, ASI + Grin, limited run

    Hey Justin: I think it's great that you and your team have been improving the Phaserunner Software Suite. Some time ago I think I asked if the Suite could be used to program some of the other ASI controllers, such as the BAC2000 (non-bluetooth) as sold by Grin a few years ago. At the time you...
  23. mrbill

    The Cycle Satiator, universal charger for the enthusiasts

    I'm not an expert, but I'd say that what you describe is exactly how balancing should work. I prefer that the Satiator does not latch when it first reaches "end of charge", that it remains active, ready to resume charging if it detects a drop in battery voltage. Latching chargers may not allow...
  24. mrbill

    Annual Battery Capacity Test

    Hi mighty82: I haven't tested IR under more controlled conditions, but I have observed the IR stat on my CA3 using various configurations. I find that figure varies enough with temperature and state of charge that it will swamp any change due to age. The only thing that seems certain to me is...
  25. mrbill

    "Edge" DD hubmotor, 1500W, 35mm, Al core

    Hi calfeetwenty: Glad to hear I inspired you. Since I live in a hilly area I actually find the DD motor works better on balance than a mid-drive or geared hub. The issue isn't torque for climbing hills, which is the admitted weakness of the DD hubs, but using the motor as brake. My bikes...
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