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  1. Bigbikebob

    Hub drive vs Chain drive and frame questions

    I am about to do a stand-up e-scooter build for the first time after doing 2 bicycle builds (based on Hub motors). First I need to decide if I go and buy a used dirt cheap e-scooter and and just upgrade it to fit my needs. Or is there a good frame option for e-scooters like there are for an...
  2. Bigbikebob

    DC to DC step down and on and off switch

    Thanks guys, will connect it between the battery and the converter.
  3. Bigbikebob

    DC to DC step down and on and off switch

    I recently Purchased a "DC to DC step down (48V to 12V)" going to use it to power all my ebike lights that require 12V. I want to add a on/off switch that will turn on and off my lights. My DC to DC step down connected to my 48V battery and I can put the switch between them or I can put the...
  4. Bigbikebob

    Crimping connectors

    dogman dan & Alan B, thanks for all the good info :) I am going to try my Terminal Crimper which works on the Bullets / Butt Connectors (does 2 crimps in one crimp action) on the Crimp sleeves and if that won't work going to purchase the tool amazon recommends purchasing with the crimp...
  5. Bigbikebob

    Throttle cuts off after I hit a bump / pot hole

    I just connected my battery to controller via insulated crimped connectors. that is funny because you just posted on my other topic regarding crimped connectors.
  6. Bigbikebob

    Crimping connectors

    You have a good point about the visibility of the quality of the crimp. I have a ratcheting crimping tool I use for the bullet and butt connectors similar to the one in the link...
  7. Bigbikebob

    Reconnecting some wires, a beginner's journey

    Crimping does require some skill but I think it is easier to learn and quicker to do then soldering, especially on the big wires. From what I know almost all connectors in the auto and aero industry are crimped
  8. Bigbikebob

    Throttle cuts off after I hit a bump / pot hole

    Thanks I did changed my battery connectors a week a go, Will check them out.
  9. Bigbikebob

    Crimping connectors

    I am not sure about the conductivity difference between the 2 options From what I see on YouTube there are things that butt splice just cant do and that is the main difference https://www.youtube.com/watch?v=41OqqezdY6c https://www.youtube.com/watch?v=UJEXgWAq1vo mark5, Thanks for the links
  10. Bigbikebob

    Throttle cuts off after I hit a bump / pot hole

    While going at a fast speed and holding the throttle twisted I started to get cut off if I hit a bump or a pot hole. If I try to rotate the throttle more nothing happens and only when I release the throttle completely and twist again the problem is solved until the next bump / pot hole. I am...
  11. Bigbikebob

    Crimping connectors

    dogman dan, Crimp sleeves basically do the same job as butt splice with the difference that the crimp sleeve connects the wires in parallel and from googling is intended for non electric big diameter wires. fechter, glad to hear that.
  12. Bigbikebob

    Crimping connectors

    fechter, I am not sure that "Euro style terminal blocks" are a good Idea, they are not deigned to stand the vibration of the bike and the screws will get loosened in time. TheBeastie, As I written splice crimp is the best solution I have found so far and if there are no high amperage...
  13. Bigbikebob

    Crimping connectors

    I prefer to avoid soldering and from what I read crimping is the preferred method to join wires in the auto and aero industry. Hall sensors / throttle are covered by jst-sm connectors Battery can be connected via Anderson power connectors which I don't like because they are bulky and have a...
  14. Bigbikebob

    Looking for Horn, front & rear led lights battery connected

    I am looking for a bright head led light, with a proper downward pattern so not to throw too much light into oncoming driver's eyes. And a tail light, the basic is just to be seen by cars and a huge plus would be a tail light that comes with winker lights that I control from the handlebar I am...
  15. Bigbikebob

    amps, volts and top speed

    :cry: :cry: :cry: This exactly what is not clear to me. if you are saying that I can get more torque using more volts then basically a 100V motor with 10A will be able to climb a hill as good as 10V with 100A? From what I have read (in this posts and others) that is not the case...
  16. Bigbikebob

    amps, volts and top speed

    Drunkskunk thanks for the physics explanation. I wrote: and you answered I do understand that for me go faster up a hill I will have to increase my total wattage that equals VxA and by saying that you actually can say that you must increase total power. but what I am saying is that if your...
  17. Bigbikebob

    amps, volts and top speed

    d8veh ,thanks for the very informative reply! So to a point I understood right, the higher your volts rating the longer your maximum torque (20A in your description) will be applied until you hit the 50% speed mark. Upping your voltage will increase your speed only if there are enough torque to...
  18. Bigbikebob

    amps, volts and top speed

    I am thinking to build a new bike and decided to dive deeper this time regarding the motor and Wattage :) I have read a few posts about volts/Amps and in my understanding volts are the pressure in the pipe and amps are the amount of "water" that are going via the exit surface aria of the pipe...
  19. Bigbikebob

    Motor locks and unlocks(at high speed) magnetically problem

    As you say, when I turn off the controller I literally pull the plug and any security measure should be cut off. Now if there were a problem with the phases touching each other then the wheel should have remained locked regardless of the speed I was sniping it. I already took a wrench (to open...
  20. Bigbikebob

    Motor locks and unlocks(at high speed) magnetically problem

    While I was going up a steep hill my power was cut and I heard and felt the motor resisting to foreword motion. I tried to turn on and of the controller and nothing changed, the bike was dead. the motor itself resisted to motion by hand. On my way back I was going down the same hill (with the...
  21. Bigbikebob

    Qestions about Cycle analyst variations

    I am thinking about buying a Cycle analyst. I got a LYEN Edition Controller 12 FET 3077 Mark II Extreme Modder HSL Sensorless which means that I can pick a DP variation. Because I am using a Sensorless controller, in order for me the read the speed of my bike I need to use the DPS variation...
  22. Bigbikebob

    Can't decide how to wire the on/off switch

    Thanks, exactly what I wanted to be sure about. Make sense.Problem is, during my first e-bike build I had no idea how to use a multimeter :) I totally agree. Sounds like an "excellent" way to learn a lesson :) I prefer to be safe then sorry. There is a saying in the military "Safety...
  23. Bigbikebob

    CRG Hindsight mirror on an e-bike experiment

    Made enough rides to form an opinion . The mirror does the job. No adjustments needed after or during the ride. it stays solid in one place.It also has a great field of view.
  24. Bigbikebob

    building my first Battery pack and got some questions

    Very impressive. So both of this chemistry type are safe. The NCA is more energy dens for a fact while the statement that LiFePo4 has more life-cycles is an assumption that can be tested only after you use your specific cells. And as I previously stated, Tesla went with the NCA chemistry...
  25. Bigbikebob

    Can't decide how to wire the on/off switch

    Been there, done that :) The question is does the controller uses the ignition wire as a signal that translates into "0"/"1" , and logic tells me that 48V is too high voltage for a signal which is usually 5V or does the ignition wire intended not as a signal but as a power source for the...
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