Gearing Up a Delco 500w PMA

Discussion in 'Windtura Generators' started by bearings, Mar 22, 2010.

  1. bearings

    bearings WindyNation Engineer

    I am currently getting around 2-3 amps from my slant core 500w PMA in 8-10 mph winds. I am using the 5 Turbo Torque blades. I feel the amps are low and would like to up the Speed of the PMA with the same wind speed. Has anyone else done this? What can i look out for or will it even work? I was thinking about a 2 to 1 ratio. I understand that there would be the drag of 2 more bearings plus a belt to drive. Any Input would help. Thanks.
  2. fabieville

    fabieville WindyNation Engineer

    I too have a windblue 500w PMA can someone give me some ideas as to how to gear it up?
  3. TomT

    TomT WindyNation Engineer

  4. TomT

    TomT WindyNation Engineer

    Also anyone else thinking of gearing up a GM PMA you will need at least 4 to 1 gearing to even get good amps out. I was looking at Wind Stuff Now GM alternator mods outputs today. The numbers even with Neos and lots of extra wire do not even come close to Windy Nations PMA without gearing up.
  5. Minnesota

    Minnesota WindyNation Engineer

    It's the classic problem ... nead more RPM, so one thinks gearing, but then the torque required goes up dramatically so one needs longer blades which spin slower and you now suffer with a 8% effeciency hit with the gearing, not to mention worse reliability.

    Purpose built sealed PMAs are what's needed.
  6. TomT

    TomT WindyNation Engineer

    Yes purpose built is the way to go.
    But if you have a Delco and do the Capacitor method. It will loosen it up so you will turn faster with less torque when you gear it up.
  7. murray2paddles

    murray2paddles WindyNation Engineer

    I have had the Delco's, the Windblue's and to be real honest with you if you want more watts don't spend anymore $$$ on trying to gear them up. It is like getting water from a stone, possible but why do it.

    Save up your $$$ right now and in the long run you will spend less , save time and have less headaches if you just purchase a proven turbine that will suit your needs....
  8. TomT

    TomT WindyNation Engineer

    Well after checking it depends which WindBlue you have. One is for LOW winds and says you should not gear up. In that case my depend on which blades you have.

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