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  1. boppinbob

    75 amp discharge connector installed

    After charging, connecting up my discharge cables chewed up my 45 amp Anderson's in 10 months of daily usage plus they were kind of spot welded everytime making the connection a little tougher than it needed to be. I still haven't put in a precharge resistor but I did put in 75 amp Anderson's...
  2. boppinbob

    Removing Roll Pin from Anderson's

    I know this is a trival question. How do you remove the little roll pin in between two rows of 45 amp Anderson's
  3. boppinbob

    5.5 bullet connectors

    I'm making new wire harnesses for my bikes now that hk finally has 5s and 6s batteries with 8ah capacities. All I need to order now is 5.5 bullet connectors. It's weird but epbuddy doesn't have 5.5 bullet connectors. I found some on amazon.com but they are pricey at 5.95 for 3 pairs...
  4. boppinbob

    Lost all voltage, had to pedal to work

    The temperature was nice for my daily commute to work here in Houston. I opened to throttle and accelerated to 40 mph on a straight flat smooth section of roadway and released the throttle. My APM display went dark and I had to pedal the last mile to work and them pedal 3 miles home after work...
  5. boppinbob

    Bad cell, bad sag

    I have a 72v 8ah lipo battery pack which I have used daily on my commuter bike for about 10 or 11 months. I've noticed it's been sagging more lately that usual. Sure enough there is a weak cell at the end of my ride home. It is 3.4 while all others are 3.84 plus or minus .02v. I have a spare...
  6. boppinbob

    Only one linear pull brake at 40 mph

    I use my crappy Walmart Genesis v2100 as a daily commuter to go to work. It's front disc calipers are shot and the linear pull brake pads in the back are very worn so I made myself a pledge not to exceed 30 mph until I replace the brakes since I don't wear a helmet or body armor. I noticed...
  7. boppinbob

    Controller on/off switch shot

    It's been raining and although I avoided any downpours my commuter bike won't turn on at the controller switch. It felt like it was trying to mess up and had a sticking problem when trying to toggle it like it had dirt or something in it. It's my favorite commuter bike. So I guess this weekend...
  8. boppinbob

    Tired of waiting for HK

    I'm tired of waiting for HK to get their 5s8Ah lipo out of backorder. I'm going to order 4 5s 5.8Ah lipo. I will wire it up to with my 4 5s 8Ah pack for charging like this to give 20s 13.8AH
  9. boppinbob

    Conversion To Disc Brake

    My first build is an ongoing thing. I've got the wally mart Genesis. It came with cheap components. Among the bad things about it is the linear pull brakes in the rear. So I got a Crystalyte HS3540 which I am happy with 8 months in except I want to convert to rear Disc brakes after I get...
  10. boppinbob

    No Derailleurs

    This question is for ebikers who have done away with their front and rear derailleurs and opted for a single gear crank and a single gear free wheel on the hub. Could you please state the make and number of teeth. I would like easy pedaling to get the bike going because I have a sensor less...
  11. boppinbob

    Possible Puffer

    Today I removed the batteries from the battery box to do a visual inspection of my lipos. The 5s packs are 7 or 8 months old. I use them daily on my commuter bike. I can't tell for sure but one cell might be starting to puff. It just isn't as hard and square as my other packs, if it is puffing...
  12. boppinbob

    Paralleling

    I'll try to be coherent asking this question. I have 4 zippy 5s8Ah batteries in parallel and charge them with the setup in the photo. I want to use 8 zippy's like this. Can I use the same charging harness pictured above ? Also, below is the harness from the batteries. You can see them...
  13. boppinbob

    E-bike Fall

    I knew it was going to happen at some point and it did. I went over the handle bars going to work the day before yesterday. It was totally my own doing and I wasn't wearing any safety gear. I had just gotten new handle bars with a 5.5 inch rise to combat the wrist fatigue the day before.(I find...
  14. boppinbob

    Lower Discharge Rate Lipo's

    I have had very good luck with zippy lipo with 30c discharge rating. (5s8Ah) What are members' experiences with lower c rated discharge rated zippy's like 15c?
  15. boppinbob

    Highest Watt Hour Bike in the Forum

    My lipo battery is pathetic at 72v8Ah, but am working to rectify it. I read KingFish's post on his trip to California (wonderful tale) and it made me curious as to who in this forum has built and used the highest capacity battery.
  16. boppinbob

    HK USA

    When Hobby King opened up a US warehouse I thought it was great not to have to wait a couple of months to get my lipos. Now they are having a serious shortage of 6s and 5s 8000mAh packs it seems. Which brings me to a question. I have a 72v40a Crystalyte controller It has an 84 volt 50 amp...
  17. boppinbob

    Generic Box

    Hope this doesn't sound too trivial. I've been riding my genesis v2100 build for about 6 months. I slapped it together because it was my first build and I was too excited to make everything nice and neat. I just wanted to hop on and ride my own 40 mph bike. Now I'm trying to polish it up a bit...
  18. boppinbob

    Watts Up Meter For Higher Voltage Systems

    Since I have an apm (active power management) display instead of a cycle analyst I need a Watts Up meter to check Ah used and watt hours used but they all seem to be rated from 0 to 60 volts and I have a 72 volt system. Is there a Watts Up meter that can take over 60v. Thanks, Robert Pate...
  19. boppinbob

    Doubling the watt hours available for the bike

    I have 72v40a system and use 4 zippy's 5s8Ah in series for a 20s8Ah battery pack. I want to double the Ah to 16Ah and the easiest way for me is to series 4 more 5s8Ah zippy's then parallel the 2 20s1p packs into one positive lead and one negative lead going to the controller. Is that right?
  20. boppinbob

    Men's Beach Cruiser Bicycle - Stretch

    This bike could hold a lot of batteries. It's a fixie. One problem. It only has a coaster brake. I wonder what the spread in mm the rear dropouts have. Has anyone in here done a build with one of these stretch cruisers. Even the handle bars can handle a smart phone mount, cruise control, full...
  21. boppinbob

    Changing volts and amps

    I have a sensor less HS 3540 with a 7240a Crystalyte controller and an APM display. You can change voltages and amp setting on the controller with the APM. I have 4 zippy 5s8Ah packs in series for 72v 40amps, which is what I normally set it to. Today I reduced the voltage to 60v and 30amps...
  22. boppinbob

    Bike Rack For Ebikes

    I have a commuter ebike for work. However my wife and I have ebikes for leisure as well and would like to go to bike trails and parks to ride them. We would have to transport them. I don't have a truck so I was looking into bike racks but the weight of an ebike has me wondering whether any bike...
  23. boppinbob

    Prodeco Phantom X 6 months of ownership

    It's been roughly 6 months since I got the Phantom x which I use daily as a short commuter ebike to go to work (very short 1 mile round trip). For a sturdy, reliable albeit slow, (17-20 mph) production bike, I am happy with it, and it uses safe LifePo4 but that won't stop me from modding it the...
  24. boppinbob

    Lipo From HK Came Fast

    I ordered a 5s8Ah zippy on Monday and it was in my mailbox Friday. I live in the US and now they have a US warehouse. One cell though was out of balance by .03v I'm discharging and balancing the pack now. As for the pack it is replacing that is only 5 months old I could save the other 4 cells...
  25. boppinbob

    I Just Tested The Limit Of My Lipo Pack

    I wanted to see how far my 4 5s8aH lipos would carry me so I rode it 12 miles. It started to lose power because of the Crystalyte Active Power Management LVC I think. Toward the end though it seemed to drop at a faster rate. Also the batteries started to go out of balance. I was at about 3.4 per...
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