Okay we this time it will make the RC truck axle of the grinder broken. Actually it's easy but need some skill-weld and thoroughness. These trucks are very powerful. Suitable for RC 1:8 axle truck, this can also be used for miniature Bus. Materials: 1. Used Grinders 2. Laker/Bairing 3. As Central Motorcycle 4. Welding machine 5. Iron Plate Okay only this I can share hopefully inspiring.