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Boxer FS-2 Electric Conversion

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  • Boxer FS-2 Electric Conversion

    Hey guys,
    I have a Boxer FS-2 frame that i would like to convert to electric. I am brainstorming as to where i can put the batteries and mount the controller. But, the area i need help is Motor/Controller/Battery setup. I have the torkinator on my ESR750 with SLA batteries, but would like to try the generic 1000+watt controllers you see on ebay and amazon just for cost savings with some cheapish Lipo batteries and to see how they stack up. (Range does not really matter as long as i get 5 miles as i do not plan to use this for long distance, just messing around my block and property.)

    https://www.amazon.com/ZXTDR-Brushed...c-031289ea8cc9


    https://www.amazon.com/Mophorn-Elect...c-031289ea8cc9

    I saw these 2 kits on amazon which seem interesting. They both have a ton of features that i would probably just cap off and not use.

    I would appreciate any help or input on this. Also, this is my first time actually trying to do something that is not just plug and play with electronics, so i really do appreciate any and all help that you can extend.

  • #2
    Amps seems low to me. I have a Chinese 1500W brush controller driving a silver case motor and its rated 35A. Its pretty slow on any hills but does do great on flat. This is at 36V with 11/82 gearing which is supposed to be for hills.

    Edit: Second linked kit might work ok.

    Here is the label of the one I am using:
    label.jpg
    Last edited by ESR_RSE; 05-16-2019, 12:49 PM.

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    • #3
      Hmmm, i am trying to build something capable to ride pretty well on grass, packed dirt and some hills in the grass. Any suggestions? Would like to keep it under $300-400 for the motor/controller/batteries.

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      • #4
        I would say go ahead and try out that second kit you linked. I think brushless is more efficient so should be enough.

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        • #5
          Ok, i mean for $140 even if the motor last a year or two it is still a good deal. Any suggestions on batteries? I am trying to keep it to small but powerful batteries so i can somehow mount them under a wood deck.

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          • #6
            I shared all my battery recommendations in that other thread.

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            • #7
              Yes, i totally forgot about those i apologize! I will have to measure when i get home and see what i can do as those might be a little too thick for under the deck. I saw Len had been messing with replacement batteries for those balance board things that looked very small. I wish i trusted myself to make my own battery packs, would probably be my best bet.

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              • #8
                Here is a picture of the frame, just need to put together the suspension fork.

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                • #9
                  Ah cool. Keep the updates coming in. BTW posted a new thread about the "best + cheapest" battery I have found. The K2 ones.

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                  • #10
                    I was just reading! I am really interested in them, wish they offered a slightly smaller form factor to drop right in..

                    After a bunch of researching on this, i made a decision. Going with a 60V 10" hub motor wheel, 60v controller and a 36v lithium battery. Will probably buy two of the batteries and run 1 until everything gets sorted and then move to the 2 in parallel once everything is 100%. (It should be real quick.)

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                    • #11
                      Originally posted by pattyballs View Post
                      I was just reading! I am really interested in them, wish they offered a slightly smaller form factor to drop right in..

                      After a bunch of researching on this, i made a decision. Going with a 60V 10" hub motor wheel, 60v controller and a 36v lithium battery. Will probably buy two of the batteries and run 1 until everything gets sorted and then move to the 2 in parallel once everything is 100%. (It should be real quick.)
                      Braver than I. I don't want to deal with the Lith-Ion "hoverboard" style 36V batteries. I guess probably safe with a quality charger but lacking of BMS is freaky given I have exothermic events at work.

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                      • #12
                        Thankfully the battery i am looking to use had a built in BMS.


                        https://www.aliexpress.com/item/-/33012911143.html

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                        • #13
                          Ouch under 10A discharge is not good. Weird it then says oh ok 40A burst is ok but then 13A is fine.

                          Worst than can happen is BMS does it's job and shuts down the pack.

                          I think on silver case motor twin 20A packs @ 40A continuous works. Torkinator you need more like 80A burst.

                          But then again I am in colder region and makes the batteries unhappy.
                          Last edited by ESR_RSE; 05-28-2019, 06:42 PM.

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                          • #14
                            Lol, good catch. I mean, i am hoping that for the price it is worth a shot. Still trying to figure out the right hub motor. Would love to drop 300+ on a single battery, but not in the budget lol.

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                            • #15
                              I guess the current demand will depend on the motor.

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