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  1. Vincenzo

    voilamart/otherbrands wheel rim

    yes, sir. I did. As I explained above I couldn't afford experimentation with the sole transportation that help me put food on the table. I totally trust everybody's advice and will use it for the second (hopefully folding) built that will add redundancy and flexibility. There complicated math...
  2. Vincenzo

    power loss due to dirty connectors! anyone?

    First, this is an amazing place for understanding throttle controllers: Guide to Hall Sensor Throttle operation, testing, and modification. - Electricbike.com Ebike Forum I disconnected and inspected all the controller connectors and found out that the touching metal of those connectors...
  3. Vincenzo

    power loss due to dirty connectors! anyone?

    And I'm sorry for my sarcasm again. I tried to take pictures of the soldering of the thick wires to the connectors but I couldn't find one that I did not cover with a double layer of heat shrink but trust me I have been soldering since I was 8 (a Weller was my dad's birthday surprise to me) and...
  4. Vincenzo

    power loss due to dirty connectors! anyone?

    I understand that there are ways to save a penny, like making the metal conductor from a cheap metal that cost less and cover it with some shiny paint, but for this application, I very much doubt that it's worth it. We're talking about the very simple regular XT90's here, not the fancy/special...
  5. Vincenzo

    power loss due to dirty connectors! anyone?

    WOW! That's a breakthrough! That proves, for the first time in history, that there are two kinds of chinese, good chinese and bad chinese. Unfortunately, the bad ones never get rich by saving some plastic here and there because the new plastic saving molds probably cost more than what there...
  6. Vincenzo

    power loss due to dirty connectors! anyone?

    Smart thinking Chalo, as always. It is a very valid probability that didn't cross my mind, even though I find it hard to link it to the grinding that I felt. I'll go check it out and take pictures right away. For a serious test, I'd have to hookup two little digital voltmeter (the ones they use...
  7. Vincenzo

    power loss due to dirty connectors! anyone?

    I agree with both of you and I did the test. They are warm, but not the whole 200 watts. Thank you for making me more sensible.
  8. Vincenzo

    power loss due to dirty connectors! anyone?

    Exactly! The old corroded/dirty connectors may play a relatively small part of the whole problem. I'm trying to think about other problems.
  9. Vincenzo

    power loss due to dirty connectors! anyone?

    This is the guy who recommended the "insane recipe" and I hear everyone I respect talks about Deoxit. I used to think that they were too pricey for me but I just checked their prices now and they are not bad for what they do especially since I'm starting a very fancy job next month. What...
  10. Vincenzo

    power loss due to dirty connectors! anyone?

    I did the 40 mile round trip again yesterday, and the condition was sadly back. It's a new route to me so part of it is that there's a mile that has the most steep ascending and it occurs in the second half of the ride when the battery voltage is much lower than the initial fully charged voltage...
  11. Vincenzo

    power loss due to dirty connectors! anyone?

    sorry for the sarcasm. I hope it was taken as funny and not inappropriate. I totally agree that even though a sudden or gradual loss of power only at high speeds/power logically leads to concluding having noticeable resistance in the source-to-load path and having had the same connectors for a...
  12. Vincenzo

    power loss due to dirty connectors! anyone?

    Gold plated with precious stones and large diamonds all over ;)
  13. Vincenzo

    power loss due to dirty connectors! anyone?

    after the cleaning and widening some of the males with a tiny flat screw driver, the power near home in a flat road jumped back to 14XX. That kind of confirm my (and the others participants in this threads) analysis. From now on, I'll work on finding a better high current connection methods...
  14. Vincenzo

    power loss due to dirty connectors! anyone?

    Hey, thank you Chalo. Did some cleaning and noticed that some of those connectors got less tight than what I remember the last time. What is happening is that I remember when I changed some wiring the last time the maximum power that I could get on uphill max speeds increased from 13XX to 14XX...
  15. Vincenzo

    power loss due to dirty connectors! anyone?

    thanks. I'll do that and use a small screw driver covered with a rough cloth. that cleans the females only. I'll start looking for a long term solution that is less than replacing all the connectors every winter and study dielectric grease
  16. Vincenzo

    power loss due to dirty connectors! anyone?

    Thank you! I used the wrong word above. So, that's a common issue? The power changed for different events, e.g. I once was thinking about some cells aging but after I changed the wiring (and connectors), the power noticeably increased. Thanks for confirming. So, your treatment is simply by...
  17. Vincenzo

    power loss due to dirty connectors! anyone?

    For the number of connectors, see the attached drawing. I gave a brief answer too, "reliability" and ease of taking apart and speedy repair. May be it's the engineer in me that doesn't want to make it amateurish. It is easy to take it apart. The xt60s can split the battery to 4 parts in series...
  18. Vincenzo

    power loss due to dirty connectors! anyone?

    I have 2 xt90 connectors, 4 xt60 connectors and a blade fuse holder (and the fuse) between the battery and the controller, and there are three bullet connectors taken from EC90 male-female wires between the controller and motor. It took me a long time of observation to start thinking that all...
  19. Vincenzo

    An electrified light Dahon

    I hope and pray that the OP with only 3 messages (all here) is fine and can come back to give an update on his project. If not, then I hope that anyone who reads this who did switch from a regular size converted bicycle to a 20" (or less) converted folding bicycle (or at least added it to their...
  20. Vincenzo

    more power for climbing hills

    those curves are volt-time for one kind of low-discharge kind. Those have nothing to do with my decision between low/high discharge cells. thanks
  21. Vincenzo

    more power for climbing hills

    I'm about to place an order of high discharge cells to conduct the experiment for my new backup bicycle build as it looks like no one has done anything similar so far. I was curious and wanted to know if it's worth it (a $40 vs $65 kind of cost difference for a 20 mile battery). If the higher...
  22. Vincenzo

    more power for climbing hills

    have you done it?
  23. Vincenzo

    more power for climbing hills

    I was wondering...how hard is it to understand What I'm saying?
  24. Vincenzo

    more power for climbing hills

    in theory, it makes sense, but have you done anything close to this kid of comparison in real life? i just have a feeling that high discharge cells would be easier when going up a steep hill (something about their discharge curve?)
  25. Vincenzo

    more power for climbing hills

    I have not a clue what you are talking about!!!!! My question has nothing to do with range and Ah's...I specifically complained about unrelated content in this thread. I don't do the so-called "BMS" because they don't make sense to me, so assume that they do not exist, just a simple...
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