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  1. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    The problem is solved. Robbie of Grin got back to me after noticing that in my PR settings, I had set different values for the "Throttle Start Voltage" and "Throttle Fault Range" - these two settings need to have the same value (at least for my setup, apparently). Below, I append Robbie's...
  2. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    Any news on this from anyone? I've not been able to do any more testing, as an OS upgrade on my laptop broke the ability to pull data from the Phaserunner. Grin wants more data before I return phaserunner, because of my "new" 52V setup. Due to other responsibilities, I've given up on the...
  3. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    Update: I have been running on a new 52V battery, with similar Ah capacity to the prior 36V battery. Though I get stronger regen. braking with the 52V battery, the Phaserunner still cuts out at the set power limits, which it is not supposed to do. I'm still trying to figure out why. Grin has...
  4. retrocycler

    raising voltage to maximize regen. braking?

    Update: I have been running on a new 52V battery, with similar Ah capacity to the prior 36V battery. The answer to my original question is now absolutely clear: I get STRONGER REGENERATIVE BRAKING with the 52V battery, at comparable amperages compared to the 36V battery. The Phaserunner still...
  5. retrocycler

    raising voltage to maximize regen. braking?

    It is a phaserunner, and it is the phaserunner that is limiting current. I've programmed it to limit to 5A, 10A, and 20A. In all cases it correctly limits the regen. current to those values. (The fact that it then "lets go," and the regen. is abruptly cancelled is apparently a bug in the...
  6. retrocycler

    raising voltage to maximize regen. braking?

    Been away from this for a while, sorry. But it is still a problem I'm trying to solve. John and Serious Sam, you two have got me totally confused now! I'm inclined to believe Serious Sam, because his is the answer I would like to hear, LOL. But even Serious Sam is being ambiguous (or I just...
  7. retrocycler

    raising voltage to maximize regen. braking?

    Thinking some more about what pronghorn wrote (among others), and wondering: thepronghorn wrote: ↑20 Oct 2020, 22:46 to which donn followed up: My question: assuming the same capacity in the two battery packs (36V vs. 72V), why would the 72V pack take only 5A maximum charge current? Max...
  8. retrocycler

    raising voltage to maximize regen. braking?

    Ladies and Gentlemen, thanks again for all your replies! I think I'll play a little more with my existing battery (36V LiFePo), see what difference 20A regen. current makes. If it makes a good difference, then I'll have something to go on for any future battery purchase - be it soon after...
  9. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    Just a quick update: I am talking to Grin about it, and they have allowed the possibility that my Phaserunner is faulty. That won't be settled until I can do some more tests. A recent crash (on another bike) is cause for some delays, as I recover from injuries. Please stay tuned and know that...
  10. retrocycler

    raising voltage to maximize regen. braking?

    Wow, so many interesting replies! Thank you all. Sorry I can't follow the discussion so closely / every day. Now I'm somewhat confused, however! Goatman wrote, My question - What is "plug braking?" querkus wrote, My reply: if this is true, then my plan to go to higher voltage is doomed...
  11. retrocycler

    raising voltage to maximize regen. braking?

    Hi again. Pronghorn, that is a very interesting statement, and begs questions about definitions. You said: Is that true? The charge rate would be the current, wouldn't it? It is the charge current that is limited. But current is not power. Now I think that it is power which gives me...
  12. retrocycler

    raising voltage to maximize regen. braking?

    Thanks for everyone's replies, some of which make sense to me, even though I don't believe I have an answer yet. I've already played with all the possible settings on my phaserunner, as described in the other thread that I already mentioned...
  13. retrocycler

    raising voltage to maximize regen. braking?

    Hi all! I've built a bike with regenerative braking using a GMAC10T hub motor. Currently the rig is powered by a 36V 10Ah battery, going through a Grin Tech Phaserunner. For my purposes, it is the braking that is more important than the regenerating. I've had some difficulties with the regen...
  14. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    serious_sam: that is an excellent idea, and so obvious, I'm embarrassed I did not think to try that already. I finally got to it today... I set the Phaserunner to permit only 5A of regen. current, and indeed, now the regen. cuts out at about that value. (I was unable to record data on that...
  15. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    The past several days I logged data on this issue. I attach several files (two data runs, in original and in annotated .xlsx format). Both rides are very short - about 90 seconds - simply getting up to speed and then using the e-brakes, increasing the e-brake power gradually until it cut out...
  16. retrocycler

    CA3 datalogging data logging weirdness need help

    I did some more testing, and I think I figured it out. The problem is that despite setting it to never fall asleep, the macbook does fall asleep when you close it. But it takes a bit of time to fall asleep (it's doing some housekeeping I guess), and during that time, the data logging does...
  17. retrocycler

    CA3 datalogging data logging weirdness need help

    Hi there, Pursuing data in search of a solution for my e-braking problem/question https://endless-sphere.com/forums/viewtopic.php?f=2&t=107765&sid=1d80c7f6ff70318ca6a83e828f393716, today I managed to get out on the bike with a laptop, collecting serial data from the Cycle Analyst v.3 (CA3) using...
  18. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    Hi thanks for reply. I'm not sure of anything. But I do observe that the e-braking "cut-out" happens with all sorts of different voltages shown on the CA3, not any particular high voltage. However, there seems to be a correlation with the power/amps readout. When it gets close to 10, it cuts...
  19. retrocycler

    Regen. braking cuts out unpredictably - Settings? Solution?

    Hi, I'm test riding a new e-bike build, and this is my first experience using proportional regen. braking. Is there a way to keep the controller from "cutting out" regen. braking when a current limit is hit? I'm using the GMAC 10T geared hub motor, Phaserunner controller, Cycle Analyst...
  20. retrocycler

    Fault[11] "Voltage out of range" PhaseRunner utility software

    Yes, I'm sure of that. The settings are in a section where you can map the throttle response voltage profile - it is clearly about throttle output voltages, and how the PR will respond to those voltages. I can also observe the voltages being sent by the CA - in real time, live - and observe...
  21. retrocycler

    Fault[11] "Voltage out of range" PhaseRunner utility software

    That's a neat idea, didn't know that was possible, I will explore it!
  22. retrocycler

    GMAC 10T CA v.3 speedometer readings off by a lot

    Thank you friends! Setting the CA to 6 poles per revolution did the trick. Now the readings look appropriate. My PS is the L10, with the multipin connector. There is a two-pin terminated cable that goes to the CA, but it only has one pin (in a two pin connector!), and it apparently carries...
  23. retrocycler

    GMAC 10T CA v.3 speedometer readings off by a lot

    Hi, I'm building up a bike with GMAC 10T and a PhaseRunner (PR) all hooked into a Cycle Analyst v.3 (CA). My bike isn't on the road yet, I'm still just setting it up, with bike in a stand with rear wheel/motor turning freely for testing. The GMAC motor appears to have 80 “pole pairs” which...
  24. retrocycler

    regen keeps tripping a fault

    I have a possibly relevant issue, the details of which might be of interest to you. To avoid cluttering this thread with possibly irrelevant information, I've posted my question in a separate thread: https://endless-sphere.com/forums/viewtopic.php?f=2&t=107476#p1573382
  25. retrocycler

    Fault[11] "Voltage out of range" PhaseRunner utility software

    Hi, Sorry for the length of this post. I’m trying to be super clear about terms/signals/voltages, which are new to me and confusing. I'm building up a bike with GMAC 10T and a PhaseRunner (PR) all hooked into a Cycle Analyst v.3 (CA). My bike isn't on the road yet, I'm still just setting it...
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