Watched some YouTube vids on speed running , so in my garden we went , 6s 16t pinion , insane speed straight into chaos and flipped into a metal post , she kept going for the entire battery , the asuga hit every tree , the wall again , at a fair rate of knots too . Its a tough old cookie indeed , have hammered the tower to near straight , fitted the stock 13t pinion back in too as that's fast enough in my garden