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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.

    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...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. drutledge

    Need help diagnosing motor problem.

    I have a 9C motor that has stopped turning properly. Sometimes it will make a very faint 'Ting' sound and not turn at all. Sometimes it will turn (usually if helped) but any sort of load will stop it (like just a hand gripping it). I'm thinking hall wires? How to diagnose if it's in the motor...
  8. drutledge

    I've lost regen but still have brake cut-off

    Title says it all really. I seem to have lost regen but still have the brake cut-off function on one of my bikes. The controller is a 35A Infinion from Justin (Grin Technology). It has a Cycle Analyst hooked to it as well fwiw. Any ideas on what happened? Where to look? This bike is a heavy...
  9. drutledge

    A123 cells charging super fast/charge on LiPo setting?

    I bought 15 A123 cells via the Midwest group buy from Victpower and have assembled them into a 15S1P pack which can be seen here: http://endless-sphere.com/forums/viewtopic.php?f=14&t=38761&start=30 When put on a 600W charger at 54V (11A, about 1/2C rate) three of the cells really take off from...
  10. drutledge

    Hyperion 1420i balance readings off (?)

    I have a Hyperion 1420i that I bought last summer and have used almost exclusively as a bulk charger. I've never really used it to balance even though that's what you'd think I'd have it for. The cells have always been pretty balanced already (I think!). I use it only on a 12S2P (44V 10ah) pack...
  11. drutledge

    12s2p High Side/Low Side + Different meter readings

    Short question(s): *When I switch the "High Side/Low side" balance connectors from my pack going into a Hyperion 1420 the balance readings go way out of whack. Why is this? or Should this happen? *Also, when reading the individual cell voltages with the Hyperion, or an HK-010 or HK Cell Meter...
  12. drutledge

    Just hooked up batteries and got a good spark

    I just tried to hook up some newly shipped (from Hobby King) Zippy 6s 5000mah lipos in series using a series harness from EP Buddy. Both batteries were at about 53% as shipped and cells were balanced separately, then together before hooked up. The EP Buddy harness is pretty much idiot proof but...
  13. drutledge

    Need to limit 1000w system to 750w easily.

    I currently have a brushless motor rated for 1000w on a homebuilt tricycle. It has a controller rated for 28 amps and 3-22ah 12V batteries wired in series for 36V. Is my thinking correct that the easiest way to limit the output of this setup to 750 watts is to swap out the controller to...
  14. drutledge

    One battery really sagging in 36V SLA series set.

    I have 3 35ah SLA batteries wired in series on my hefty cargo trike. Everything has been fine until recently, I have about 500 miles (375? ahs) on the bike/batts now. After I take the bike off the charger everything runs well for the first 5 miles or so, about 3.5 amp hours of use. All the batts...
  15. drutledge

    Need help figuring best battery size for trike.

    I am fairly new to the world of ebikes but have just built an electric tadpole cargo trike (two wheels in front, one in back) using two hub motors in 20" rims with 2 20 amp controllers and one Cycle Analyst that monitors/controls both. All from ebikes.ca. Since space and weight are not really a...
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