help with my currie motor

Discussion in 'Electric Bicycles' started by okmate, Jan 29, 2012.

  1. okmate

    okmate New Member

    Hello guys i came across this site whilst trying to find out a little more about my currie motor.
    At present its fitted to my cluad butler' i will find a picture of my bike so you can have a better look later but this link below looks identical to my motor.
    http://www.electric-bikes.com/scooters/flyer.html#Technical Specifications
    its 24v with the batterys in a canvas bag which slides into the rack on the back with thumb throttle. it was originally on a bike that my father had locked away in his shed for years' so i decided to buy new batterys and fit it on my cluad butler.
    i'm really pleased with it' i do use it for work and its great but like everything i want to make it better and faster with longer runs between charges
    hope i havent gone on to much is this in the correct place or should i make a new post thanks again guys hope you can help
     

  2. jaguar

    jaguar Well-Known Member

    only way to go longer between charges is not running at full power (but that is boring)
     
  3. With electric power volts=power/speed and amps=range. To go faster go to 36 volts by adding another 12volt battery in series. BE WARNED, some motors that are built for 24 volts can handle an increase to 36 volts and do fine with it, others will burn up instantly/very soon. You should contact the maker and ask if your motor can handle increased voltage. To go farther get a battery/batteries with more amps by adding another battery in parallel or buying a new battery set with higher amperage.

    Be aware, there is no free lunch here. More volts/amps will mean a heavier battery pack which will take more power to accelerate and move up hills. There is a gain with a heavier more powerful battery, but also a slight loss due to increased weight. Sooner or later you run into the law of diminishing returns where a bigger, heavier battery will overload your present motor so you will need a bigger more powerful motor. Power and weight and range are always a compromise in electric vehicles.

    Batteries can be wired together in 2 ways, series or parallel. Learn what that means and how it can be used for more voltage or more amperage.

    Pedalling to assist the motor, especially during acceleration or when climbing hills, is a good way to extend range. It also lightens the weight of the rider and increases the rider's power over time, both of which improve performance. :)
     
  4. okmate

    okmate New Member

    Thats for that all very good information
    been thinking about this for a while as you can imaginge and have basicly 3 things to do
    1. contact the supplier and ask if the motor will handle 36v but unfortunatly theres no info on the motoer
    2.wire the batteries in parallel for more distance
    3.change sprocket on motor for 9 teeth i'm not 100% about this but did read something relating to the currie motor a while back
    more digging required i'm in no rush i think i will wait for the nicer more sunny days
     
  5. Esteban

    Esteban Active Member

    There is not very much to do with your current set-up than what has been suggested above. I don't know how fast , or how far you want to go, but don't expect a 50% improvement in speed & distance , just because you added 50% more battery voltage. With a 24v system, if you happen to be overweight, it drastically affects it. Fresh batteries , pedal more, & learn to live with it, is my suggestion.
     
  6. Neon

    Neon Member

    Could also run the motor through the rear derailleur gears if you have them. This is not exactly the easiest thing to do though.
     
  7. slickdude

    slickdude Member

    The currie motor has its own sprocket on the hub. I have a mens Trailz about 6 months old. Am wondering if it uses a brush motor or brushless? If so, I have considered maybe adding a bigger brushless motor and maybe a battery with more juice in the existing case. Thoughts? Been a great bike so far.
     
  8. Neon

    Neon Member

    Brushed motor. Probably 450 watt. Bigger is almost always better. I'm not touching the subject of batteries with a ten foot pole.
     
    Last edited: May 11, 2012
  9. slickdude

    slickdude Member

    Okay so what replacement motors are there that fit the rear currie mount? I can deal with batts later, thanks.
     
  10. Esteban

    Esteban Active Member

    You could also try skinnier tires, but expect a harsher ride.
     
  11. slickdude

    slickdude Member

    seems my batteries at a tad over 6 months only hold a three maybe four mile range. I had heard that this is the case with curries batteries. I did find a youtube video that shows how to replace them with a 36v lithium in the case. I might spring for a set of new lithium batteries not sure yet. Depends on what their costs are and how cheap I can fiund one. Probably will see if I can update that currie motor too. Too bad there aren't more currie people up here to discuss it.
     
  12. jaguar

    jaguar Well-Known Member

  13. slickdude

    slickdude Member

    Okay, that settles the battery issue I suppose. Brings up two additional questions. What motor options for replacement of the curry motor exist and then which power battery setup that give range. I am mainly interested in extending the range rather than the speed. 20mph is plenty fast enough, but the range right now down to 3miles is way too short. I understand the volts mean speed and then amps mean distance, do I have that right?
     
  14. jaguar

    jaguar Well-Known Member

    The battery you put on it should be at the normal voltage and current capacity for your motor. Less voltage or current means it won't get you up to top speed. The wattage rating (AH) determines how far you can go before needing a recharge.
     
  15. slickdude

    slickdude Member

    Okay good too know then. So I think my currie trailz is a 450 not too sure. It is a brushed motor and I had hoped mainly to bolt in place a replacement that was brushless and lasted longer. It is a 24v system.
     
  16. slickdude

    slickdude Member

    so back to my original comments. Is there a brushless currie motor replacement available for my ezip?
     
  17. Neon

    Neon Member

    There's a few places out there that have larger currie motors. http://www.thesuperkids.com seem to carry a lot of different motors. If you want a brushless motor you'll have to replace the controller as well.
     
  18. slickdude

    slickdude Member

    Thank you very much Neon. That 1000 watt motor looks tempting. Paired up with a higher amp battery setup I can see it now. I'll probably just settle on a smaller brushless setup though and controller replacement though that 1000 watt is mighty tempting.
     
  19. slickdude

    slickdude Member

    I want to personally say thanks to both Neon and Jaguar here for informing me what I must do to upgrade my now slowing bike. Without your guys input, I never would have been pointed in the right direction. The speed is okay at 20, it is the range I am shooting for here and a replacement motor that won't get too hot or burn out should I choose to upgrade later to a higher wattage battery-my option. I still want to electrify a stingray though. Been wanting to maybe do an old Schwinn Orange Krate as a project.
     
  20. slickdude

    slickdude Member

    They have a blurb up that their 100 watt motor won't work with newer Currie bikes, only older ones. I have a men's diamond frame Trailz. Mainly 20mph is plenty fast enough. What I need to do soon is upgrade the batteries. Am looking for maybe a replacement to the curries system. I might pull it and go for a brushless motor hub and then a lithium long range battery. I honestly love the Hilltopper I installed on the trike. I am thinking that with a longer range battery this would be an ideal replacement. There is also a 550watt hub system out there. Probably faster speeds, but like I said before, 20 is plenty fine for me. BTW the hilltopper has a battery with a 20 mile range they claim. Still waiting for clean republic to ship my battery charger for the kit which they neglected to send me.
     
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