I use
24v 120w motor enough power for kids
24v speed controller
24v lithiumion battery

check ore new channel
G.T.S TOP DIY
   / @gtstopdiy  
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check this video to it is useful
Testing Best Mini Welding Machine
   • Testing a Best Welding Machine  

Awesome Homemade Invention for Cars! How to make tools for Cars
   • Awesome DIY Car Ideas  

Cool Idea! The best Grinders machine tools!
   • Cool Idea! The best Grinders machine ...  

How to Make
   / @diy.invented