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  1. drutledge

    Need help not shredding gears on small Bafang.

    I bought two super cheap Bafang G320.250 off of ebay to convert bikes for guests who want to tag along on e-bike rides. These are rated at 250W so they are not much. I have identical old (been in a box for at least 7 years?) Grin 20Amp controllers in each setup. One bike I gave a 42V 20Ah...
  2. drutledge

    Cannot get Phaserunner working at all.

    OMG. Yes, this was the answer. I read about these wires but misread it. They are NOT shorted and unless you have a CA v.3 the PR will NOT turn on. When in doubt reread the damn manual (and the addendum. ) Thanks so much!
  3. drutledge

    Cannot get Phaserunner working at all.

    I have just hooked up a new Phaserunner MT to my bike but can’t seem to get it to work. Q1) Should there be any indication (LED) that it’s on? There is none. (I’ve checked the usuals, Power cable in is at 48V, polarity is correct, connection is snug. CA,Hall, Phase wires and Throttle (direct to...
  4. drutledge

    Dropping the Voltage on my Charger

    Well, as I stated in my last post, I swapped out the 5K and put in a 10K variable and went from a low of about 38V to 28V. The high end of each is still 90V+. Maybe I got lucky.
  5. drutledge

    Dropping the Voltage on my Charger

    Answering my own question here for the benefit of others: I swapped out a 5K trimpot for a 10K multi turn rotary pot and got the voltage down to 28V on what was, I think, originally a 60.5V charger. The 5K trimpot only got it down to about 38V. Higher ohms = lower voltages on this type of charger.
  6. drutledge

    Dropping the Voltage on my Charger

    It seems that on the one charger I have that as the trimpot is turned to read higher ohms the voltage drops. Right now it's working with a 5K trimpot. I've ordered some others, 10K etc. So we'll see what happens with those installed. I suppose you could add another resistor in line to see if...
  7. drutledge

    Dropping the Voltage on my Charger

    I have a couple of the generic Chinese chargers (probably 'BMS Battery' Chargers if I recall correctly) that I ordered years ago that produce about 87V on one and 65V on the other. I'd like to drop these down to about 49V and 32V for other purposes; I hate to waste two good chargers! Anyway...
  8. drutledge

    Fairly New Crystalyte TC-80 Hub lost power, making noise

    The magnets are still whole. It's just that I can push them sideways since they are unglued. I have both covers loose so they have room to move. I put a light score where the magnets' edge meets the outer hub. If I tap on the axel and move the stator the magnets move with it and cover up/reveal...
  9. drutledge

    Fairly New Crystalyte TC-80 Hub lost power, making noise

    Yeah, I thought that wasn't right! I think the magnets are actually ok but I wouldn't even want to attempt to reglue them. I'm sure they are all unglued since that's what it would take to get the slipping clutch sound that I hear. Maybe the new guy at the factory built this motor! I wasn't even...
  10. drutledge

    Fairly New Crystalyte TC-80 Hub lost power, making noise

    Ok. I took the wheel off and looked for signs of shorted wires but found nothing. Popped open the wire side cover and still found nothing but I did find something very interesting: The magnets are not glued to the outer hub! They all move in and out with a fairly light push of a screwdriver...
  11. drutledge

    Fairly New Crystalyte TC-80 Hub lost power, making noise

    I tried the second controller and it was the same. I also tried disconnecting the hall sensor wires going to the controller thinking that if there was a short with those, the problem would go away (controller can work sensorless) but the problem is still there. Next step is to take the motor...
  12. drutledge

    Fairly New Crystalyte TC-80 Hub lost power, making noise

    I've checked the external connections fairly well and everything seems fine. Could it be a controller problem? Tomorrow I'll hook up a different controller and see if there is a difference. If it's the same, I guess it's internal and hopefully something obvious.
  13. drutledge

    Fairly New Crystalyte TC-80 Hub lost power, making noise

    I have a fairly new (<250 miles) Crystalyte TC-80 which all of the sudden has lost power (but not 100% maybe 75%) and makes a sort of 'slipping' sound. Like a clutch not grabbing. When it first happened I thought that my bike tire was spinning out on gravel. The bike moved but not much and the...
  14. drutledge

    Need help removing covers from a 9C motor.

    Thanks for the help. I got a thin putty knife and pried the one cover off. Easy peasy. The other I couldn't get past the burr but was still able to mount the cover with the stator still attached to my drill press and put some holes in. I didn't think about how much louder the motor would be...
  15. drutledge

    Need help removing covers from a 9C motor.

    I searched for something here but only found one post with the guy who cracked his side cover. The links seemed to only go into removing cassettes, not for removing the covers. I'll look again... Ok, from a link from a link in that post I got this pdf from Grin...
  16. drutledge

    Need help removing covers from a 9C motor.

    I'm trying to remover the covers on a new (flat sided) rear 9C motor, I got it from Grin a few years ago. I want to drill some vent holes to aid in cooling. I've taken out all the screws on both sides. On the brake side I was able to loosen the plate and move it out about 1 1/2" but it seems...
  17. drutledge

    Another Charger Voltage Mod Question.

    Thanks. Any idea what the other two do? I'm sure I've turned them in the past (and attempted to put them back into the same spot).
  18. drutledge

    Another Charger Voltage Mod Question.

    I purchased a 500W (KP500E) charger off of ebay last year. I was hoping it would conform to the basic BMS Battery configurations which I've modified before but this one has a different layout. This charger also has the 'no output without battery hooked up' feature so monitoring voltage change is...
  19. drutledge

    Ebikes.ca

    http://www.ebikes.ca/shop/ebike-parts/wiring-accessories/siliconetape.html I put in a vote of their silicone tape. The stuff is wonderful. It is very stretchy and flexible and sticks to itself very well, if fuses actually, you pretty much have to cut it off. You can make waterproof enclosures...
  20. drutledge

    Cargo bikes with 3 wheels

    My 2 cents: buy a cheap(er) chinese bike from ebay: http://www.ebay.com/itm/Cargo-Box-Bike-Bakfiet-Bicycle-Family-Kids-Trailer-Beach-Park-Manual-/380966860509?pt=US_Bicycles_Frames&hash=item58b364f6dd Spending big bucks isn't worth it, put your money into the electrics of your choosing. I used...
  21. drutledge

    1220 Thunder power review and open comment

    For what it's worth, I've been using a 1220 for about a year with no problems. I bought it as a back up to my Hyperion which did indeed die this winter, just like the previous two I had owned. I had to reduce my A123 20Ah pack to 12 cells from 14 to put the 1220 to use but no biggie. I power it...
  22. drutledge

    Hyperion EOS 1420i NET3 14s Balance Charger...

    In my experience: Yes. I just had my third 1420i die on me. All three died with no smoke, no warning, just dead one day. They replaced the first two but this time I'm just not even sure if I want to bother with it. 9-12 months then dead. My charger just sits mounted on a wall, never moved...
  23. drutledge

    A123 20Ah Pressure Thoughts--and bits for experiments.

    I rarely ever balance. I keep two Celllog 8s on the pack at all times and that will throw off two of the cells over time but I seem to keep a steady <20mv difference at worst. In the middle of the SOC I'm usually at <10mv difference. I only charge to 85% and rarely go lower than 30% so they are...
  24. drutledge

    A123 20Ah Pressure Thoughts--and bits for experiments.

    I'm coming late to this discussion and have only skimmed the thread but for what it's worth I think that in most e-bike situations, compression is nice to have but not a necessity. I have never noticed my cells do anything as far as expand or soften at normal e-bike C rates. The only time I had...
  25. drutledge

    Need help diagnosing motor problem.

    That seems a bit more reasonable!
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