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Motors gearing

Discussion in 'Electronics' started by rcnoob159, Jul 18, 2015.

< HobbyWing 50a V3 question | I need someone to tell me if this ESC will work with this motor i picked >
  1. rcnoob159

    rcnoob159 New Member

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    Can someone tell me a good pinion and spru gear that would work for this motor http://www.amazon.com/gp/product/B00CBTYDEM/?tag=rch0a-20
    the car is going to weight 3-5lbs and im going to have 2 of those motors on it.

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    Its going to be a Direct Drive

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    and the wheels diameter is going to be 2-5inch
     


  2. Tony

    Tony Administrator Staff Member

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    Do a google search for 12th scale rc cars and check out the rear axle. It's a straight axle with the spur gear mounted directly to it with the motor pinion riding on the spur. They are running something like a 72 spur with an 11 pinion. And these are running on a 1.5" tire/wheel combo. Larger wheels, go with a larger spur.
     
  3. rcnoob159

    rcnoob159 New Member

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    so dose than mean i should us a 72 spur and a 11 pinion with a 1.5" tire and will that will work good and have good amout of torque
     
  4. Tony

    Tony Administrator Staff Member

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    As stated, if you want to use larger wheels, you can just raise the size of the spur gear. And yes, it should have plenty of torque. And even better, doing it with a solid rear axle, not only is it more simple to build, but it will be cheaper to build because you will only need one motor, one ESC and one battery.
     
  5. rcnoob159

    rcnoob159 New Member

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    I have 2 motos and 2 esc and 2 batterys already
     
  6. Tony

    Tony Administrator Staff Member

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    Then this will give you a back up. I just don't see any reason to use two motors when you are going to use gearing which only requires one motor.
     
  7. rcnoob159

    rcnoob159 New Member

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    so if i want a 2" tire how many would the spur have

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    I was going to use 2 motors because I was not planing on doing gears and I im not using a servo to turn

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    and i don't really under stand all this gearing stuff
     
  8. Tony

    Tony Administrator Staff Member

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    Not using a servo to turn will make it quite a bit harder to get going IMO. All gearing is, is a reduction in rpm to raise torque. What I stated above is the simplest gear reduction you can do. There are other ways like using an actual transmission with 3 gears inside it to reduce the gearing even more thus gaining even more torque. As for what exact gearing, you are just going to have to build it and see how it goes. Check motor temp and top speed.
     
  9. rcnoob159

    rcnoob159 New Member

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    ok and whats IMO mean?
     
  10. Tony

    Tony Administrator Staff Member

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    In My Opinion
     
  11. rcnoob159

    rcnoob159 New Member

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    ok how do you see if your speed controll or motor lets u got backwards and forwards?
     
  12. Tony

    Tony Administrator Staff Member

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    It will state it on the purchase page or in the manual.
     
  13. rcnoob159

    rcnoob159 New Member

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  14. Tony

    Tony Administrator Staff Member

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    That ESC is made for aircraft (planes, helicotpers, quads...). You need a sensored ESC which run anywhere from $30 to $200. Make sure to read the page if you want reverse.
     
  15. rcnoob159

    rcnoob159 New Member

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    ok so that esc will not work with that motor
     
  16. Tony

    Tony Administrator Staff Member

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    I can't say yes or no. I have never tried to connect a sensored motor to a non sensored ESC.
     
  17. rcnoob159

    rcnoob159 New Member

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    It works :> but the motor dose not have wires to attch to my speed controller i wander if you cant my those i don't want to solder it directly
     
  18. Tony

    Tony Administrator Staff Member

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    Your only option is to solder directly. that is the way it was made. But, you could cut the wires in half from the ESC (or purchase new wire) and solder one end to the motor then put bullet connectors where you cut the wire so it's a quick disconnect.
     
  19. rcnoob159

    rcnoob159 New Member

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    ok I might just my a rc car esc for 30$
     
  20. rcnoob159

    rcnoob159 New Member

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