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  1. L

    Zero response when everything is hooked up

    Looks like dogman had the right idea. After taking a break from working on the bike over the winter, I finally got back to working on it. Brought all the electronics into the house (out of the garage) and shorted the wires from the key switch. Works perfectly. Then if I remove my wire and just...
  2. L

    Zero response when everything is hooked up

    Should I check for 5v while the throttle is connected, or disconnect it?
  3. L

    Zero response when everything is hooked up

    I hooked up all the parts today and when I turn the throttle, there is no response. The motor doesn't go, there's no noise, nothing. Here's the setup: Hall effect throttle 24v 250watt controller Two 12v SLA batteries in series Key switch 24v 250watt MY1018 brushed motor (mid drive) The only bad...
  4. L

    Unlabeled controller plugs

    Alright, I'll definitely use black/red for the battery and blue/red for the motor. Thanks. For the throttle, I know the throttle I have is a hall effect one, is there a chance that the controller uses a different type of throttle? And where can I find instructions on measuring it with a...
  5. L

    Unlabeled controller plugs

    I found this online: http://www.electricscooterparts.com/hookup/SPD-24250.htm it isn't exactly the same controller as mine, but it looks pretty close. It says that the female connector is the motor, which is what I suspected. The other thing I'm unsure of is about my throttle. The throttle on my...
  6. L

    Unlabeled controller plugs

    The picture on the website isn't the same colour as mine, it has red/black and the other is brown/blue, whereas on mine they are red/black and the other is blue/red. Judging by other controllers, I am guessing the red and black is for the battery and the other one (which seems to have a variety...
  7. L

    Unlabeled controller plugs

    I have a 24v 250w brushed motor controller that just arrived but the motor and battery plugs aren't labeled. I guess the assumption is that I'm putting into an actual electric bike, rather than using it to make my own. There are two pairs of wires, black and red, and blue and red. The blue and...
  8. L

    What fuse to use?

    Ah, thanks. I'm sure you can tell, this is my first bike conversion project so I'm learning. I'm also 15. I got some 20, 30, and 40 amp fuses today so I'll start with the 20, if it blows a lot then I'll switch to 30, etc.
  9. L

    What fuse to use?

    Should it go on the positive or negative side of the batteries? Or does it matter? I know there would be a tiny bit more current on the negative side, contrary to conventional current flow, but I don't imagine it would matter which side I put it on...
  10. L

    What fuse to use?

    Also, should I put the fuse between the batteries and the controller, or the motor and the controller? Or both? I'm thinking if the motor overheats or gets struck or the wires break or something, then it would ruin the controller.
  11. L

    What fuse to use?

    Alright, thanks. In terms of a fuse holder, I was thinking of using an automotive fuse and avoiding a holder all together. Then I could just slide spade connectors onto it and just have it in the middle of the wiring. I'll try a 20 amp duse first and move to 30 if it blows.
  12. L

    What fuse to use?

    I'm making a 24 volt, 250 watt bike with a brushed mid drive motor. I'm wondering if it' nescessary to have a fuse, and what the rating should be. My controller doesn't have a plug to attach a fuse, so I'd assume I just put it in series with my batteries. For a 24v 250w system would a 20 amp...
  13. L

    What voltage should I run my batteries to?

    So I should run the system to 21v? Will I still be ble to charge them back up on a 2 amp charger?
  14. L

    What voltage should I run my batteries to?

    It's a 24v system. I'm getting a digital meter to mount on the handlebars but I need to know when to stop running. My controller doesn't have low voltage shutoff. I've looked at other controllers for 24v systems and they shut off at 20v. That would mean both batteries are at 10v. I've heard you...
  15. L

    Help choosing a controller

    Wow, I never imagined it like that. Thanks. I'll go ahead and order the first one!
  16. L

    Help choosing a controller

    I have two questions that are basically the same. I'm 15 making my first electric bike and I'm using a 24v 250 watt brushed motor (it's the MY1018) and I was originally looking at this controller: http://www.ebay.com/itm/190898620052?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 It is...
  17. L

    Inexpensive Controller

    I'm getting this controller for my 24v bike. http://www.ebay.ca/itm/24V-250W-motor-brush-controller-EV-Electric-bicycle-scooter-E-Bike-/190898620052?hash=item2c7271c694 My motor is a 250 watt MY1018 brushed geared motor. There isn't much info about this controller but there are many identical...
  18. L

    Could my motor break from testing without speed controller.

    I ended up getting a custom steel bracket. I wasn't happy that it was being held on with only two screws with the aluminum bracket and I also wanted to mount it differently on the bike. I'm putting the motor in the triangle and the batteries on a homemade pannier rack thing on the back of the...
  19. L

    How to charge my lead acid batteries

    If I fully discharge them, will I still be able to charge them back up on the 2 amp setting though? Just a thought… Because the only other setting is 10A which I think is to much for them no matter what the state of charge is.
  20. L

    Could my motor break from testing without speed controller.

    For anyone who's interested, I'm documenting the build on my blog. You can find that by going here: http://nerdbag.blogspot.ca/
  21. L

    watch my first E Bike build process

    Thanks, I should have included that. Hope you find interest in it! Remember there won't be much until Friday because that's when i get my bike back. Unless I get my speed controller in the mail, then I can hook it all up and test it.
  22. L

    watch my first E Bike build process

    I am 15, and making my first electric bike. It is a 24v system, using the MY1018 motor. I have two brand new 12v 12Ah SLA batteries. My bike is currently in a shop getting a new crank but I'll have it back on friday. Then I'll be able to mount the motor permanently and once my speed controller...
  23. L

    How to charge my lead acid batteries

    Ok, thanks. It's always good to hear from someone who has practical experience with almost an identical situation as what I'm asking about. I read somewhere that charging AGM batteries (which is what I have) above the specified current can cause them to sulphate and/or cause them to hold less...
  24. L

    How to charge my lead acid batteries

    So the reason it kept jumping down to "not charged" was because they're still new and need to be charged a few times? Also I just was doing some research and found that there's some rule about charging at 1/10th the capacity. So for me, 12Ah divided by 10 leaves 1.2 amps. So I'm supposed to...
  25. L

    How to charge my lead acid batteries

    Today I charged both of my lead acid batteries individually. I had it on the 2 amp setting. When they were fully charged the green light came on and the needle was at 100% charged. I measured the voltage before charging with an analog DC meter and it was 12ish and post-charge it was 13ish. The...
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