About Modern Survivalists

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4 thoughts on “About Modern Survivalists”

  1. I’ve been watching your build of the solar system and let me just say.. That’s freaking awesome! Your video and commentary as well as the helpful info you pass along make this the best DIY video on this subject I have ever seen. And believe me, I’ve watched just about every similar project vid available on the YouTube. Just wanted you to know that your effort, as well as your explanation is appreciated very much. Thanks. Looking forward to tackling my own mobile system ASAP. (Mine will travel with me and my motorcycle trailer for camping and touring as much of this great country as I can cover.

    1. Thanks Ken! !
      I would love to see some pictures of your motorcycle solar generator when you have it finished. My wife and I both ride, and we have talked about but not yet stepped up to multi-day treks on the bikes.

  2. I’m a paraplegic. I used to be active outdoors but now it’s almost impossible. However I built an ATV power chair using parts from an old Jazzy Pride chair and I used motorcycle chain on each motor to drive the rear 24″ tires.
    I mounted a 15 tooth sprocket on each motor and a 52 tooth rear sprocket. It worked for about 10 min and the controller burned up. I put the project on hold due to surgeries but I’m back up. I think the sprocket/ teeth are the wrong configuration.
    Is there somewhere I can go to get info and parts. Design help would probably be my best option right now and I have none. I want so much to get out of this bed and move. I’m motivated but a bit ignorant to design it.
    Can you help or direct me? Please advise.
    Thanks Terry Johnson

    1. Hi Terry, I will do my best to help, but I am a little rusty on this type of design work. I suspect you are right, either the gear ratio is off, or the old motor / controller were already close to worn out. I imagine you want your final drive ratio to be pretty close to what the original chair was designed at, or perhaps even a little higher gear reduction if you think you will be spending a lot of time climbing slopes / rough terrain.

      I don’t know what the original tire size was, but lets assume 10″ for an example. 10″ diameter wheel has a 31.4″ circumference (10″ x 3.14), meaning it will roll 31.4″ for each complete turn. Your 24″ tires will roll 75.4″ in a complete turn (24″ x 3.14). So for the drive motors to be back to their designed drive ratio, they would need 2.4:1 of additional reduction (75.4″ / 31.4″ = 2.4). Your current sprockets are 15 to 52 which works out to 3.46:1. These seems like you are already reducing 3.4 to 1, when only 2.4:1 was needed to put the drive motors into stock drive ratio. Higher ratio like you have should have only helped (slower speed, but better torque which is better for rough terrain). Of course this is all based of a 10″ stock tire size. You may need to rework the math if it was different. Hopefully this is enough to get you on the right track though.

      For parts, I am not sure what the best options are, but I do know the Mcmaster-Carr website is a great source for industrial parts. Chain sprockets etc. They should have nearly every combination that is mass produced.

      Good luck with the project!

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