Please Help

I've come up with a need for a motor that will spin at more than 360 RPM & no more than 3000 RPM & capable of 5kw for periods of up to 10 minutes with 3kw constant.

Any links will be appreciated.

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Comments

  1. jwcj

    Dear Munkyman,
    The most complete resourse for any electric motor that I can think of off the top of my head would be- – -
    Grainger.com if you are not in the U.S. just add a foward slash and type international behind it, and that will hook you up anywhere in the world.
    Good luck with whatever you are going to power up.

    Love & Peace,
    John

    May 09, 2011
    1. Munkyman

      Thank you much.

      May 09, 2011
    2. Munkyman

      I’m looking for a motor to convert a tricycle to an EV with, I want it to go uphill at 25 mph & no faster than 30 on flat ground.

      May 09, 2011
      1. jwcj

        Hey that sounds like a really cool idea.

        I once had a little tiny 23cc gas engine that I converted to work on my bicycle, and it was fantastic.

        Unfortunately when my son got to be about fourteen I let him take it to his autoshop class where they took it apart just to examine it. The problem came when one of his classmates drop the bearings, and never found them all so my sweet little motor never ran again.

        Believe it or not that 23cc motor was able to pull me along at 32-34 mles an hour on the flats, andcould pull me up a hill that had about a four percent grade at around twelve to fourteen miles an hour.

        I always wondered just how much horsepower that darn little thing developed .

        May 10, 2011
        1. Munkyman

          23 cc could be from 1 1/2 HP to 6 HP according to Google.

          May 10, 2011
        2. Munkyman

          http://www.kreuzotter.de/english/espeed.htm

          May 10, 2011
      2. jwcj

        Oh I forget to tell you that Grainger might also be able to get you some litium ion batteries too !

        I have one of their catalogs which is over 700 pages, but it is from about 1995 so it isn’t nearly up to date anymore. But suprisingly a lot of the motors in there are still available today. I only know this because my son has a brand new catalog from them, and it’s amazing how industrial products that were made fifty years ago are still in demand today.

        So good luck with your project.

        I don’t know if you have done anything like this before, but I can tell you from experience that there is nothing on earth more satisfying, or fun then building your own project like your’s.

        May 10, 2011
        1. Munkyman

          This is my 1st mechanical project I’ve done limited wood crafting for years & built many aquariums (not the boxes the systems) as well as a couple bicycles as well as being a chef. Thanksgiving 1995, now that was a project I had everything but bugs & worms on the menu.

          May 10, 2011
        2. Munkyman

          It’s disturbing that I can buy a 4 gallon jug of battery acid.

          May 10, 2011
        3. Munkyman

          I’ probably going to start with a 48v lead acid cell & then move to LiFePO4.

          May 10, 2011
  2. IrishMike6464

    sounds like a cool project. Going to use to get around or just for fun?

    May 10, 2011
    1. Munkyman

      I’d like to use it for going to the local farmer’s market & any small errands within 5 miles that don’t require me to get on a road that is moving faster than 45 MPH. (Or a 45MPH road for more than 1/2 mile)

      May 10, 2011
  3. jwcj

    Dear Munkyman,
    I apologize for dropping out of this conversation so abruptly, but we had a little bit of an emergency here. One of my dogs ate a piece of plastic and was choking on it. All is better now I got the plastic out of her throat, but I ran her down to the vet hospital to have her checked out, and to get some x-rays done just in case she did any damage to her throat.
    Yeah I would think that you would have to have some sort of a credential to buy such a large quanity of acid like that. Hell when I was still farming I had to get one license after another for all the different herbisides, and pestisides I was using, but when I think about it my neighbor who grows plants for wholesale, and retail buys 55 gallon drums of acid, and 36% pure hydrogen peroxide along with having tons of a certain fertilizer Timmothy McVeigh used, and needs no licensing for them. Go figure our rules, and regulations.
    There used to be a farmer down the road that was a close friend of my father in law who stripped the motor out of his one ton stake bed truck, and hooked up a number of truck batteries to two one hundred horsepower aircraft starter motors that he had mounted in the engine compartment. He was able to drive that truck through his fields all day long, and take a couple of trips into town ( eight miles) before he would put it up for the night on his home built charger, and he never ran it out of power. So I am sure you will be sucessful completing your project !!

    Love & Peace,
    John

    May 10, 2011
    1. Munkyman

      Sorry to hear about your dog , glad it’s ok, These days a given fertilizer is popular for making crystal meth & the Gov’t has been discussing making it a controlled substance too. Yeah I think it’ll work I’m just having a hard time matching my power to my weight & duty. I don’t want this thing doing 50 MPH or not able to do 25 MPH & I’m trying to figure it before I mount it so I don’t waste too much money on it.

      May 10, 2011
  4. Munkyman

    I’m looking at 36-72 volt, I was originally looking at parts from a forklift.

    This is the motor I’ve just about decided on

    http://www.ev-propulsion.com/motorcycle-hub-motors.html

    December 15, 2011
    1. Munkyman

      with the right batteries you can get 100 mile range, for this I only need 50miles of range to feel safe. I’ve been doing research on a system that uses no batteries & runs with a capacitor & a generator that’s run on diesel & if my math is right can get as much as 300mpg depending on load & terrain.

      December 15, 2011
      1. Munkyman

        Thnx much

        December 15, 2011