Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Senior Member
    Join Date
    Feb 2009
    Posts
    138
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Overvolting an electric motor...

    So I'm making one of those overvolted MR16 light setups and I'm gonna be using a 14.4v battery. Right now, I've got a car horn (electric motor/air compressor hooked up to two little air horn trumpet things) that runs off of a small 12v SLA battery. Will I be able to use the 14.4v battery for this motor?

  2. #2
    put our Heads Together cerewa's Avatar
    Join Date
    Jun 2003
    Location
    southeast pennsylvania
    My Bikes
    a mountain bike with a cargo box on the back and aero bars on the front. an old well-worn dahon folding bike
    Posts
    3,149
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    probably no problem. If the motor is designed to handle the load easily, then increasing the voltage a little is no problem. if the motor was already on the edge of what it could handle (unlikely) then you'll break it.
    Some awesome folks who are working to give Haitians the ability to manage their safety and their lives:
    Haiti Partners

  3. #3
    Gear Hub fan
    Join Date
    Nov 2008
    Location
    Reno, NV
    My Bikes
    Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
    Posts
    2,830
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    For service as intermittent as an air horn there should be no problem IMO. Automotive 12V motors routinely run at 13.2+ volts which is the actual output of a 12v lead acid battery when fully charged and the car alternator output is above that in order to charge the battery, usually in the 13.6v to 13.8v range as I recall.
    Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro

    Visit and join the Yahoo Geared Hub Bikes group for support and links.
    http://groups.yahoo.com/group/Geared_hub_bikes/

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •