107 Percent larger 4:1 Gearbox

The gearbox as-is works quite well but motor mounting is too flimsy and not large enough for a 540 or 480 RC motor in a crawler. So I increased the size to 107% of original and beefed it up for more strength. I printed with PETG and it is very strong and works smoothly. There are two output spiders. The original has the hex, which is now 107% larger. The small hole version has the flat so you can use a 1/8 shaft with the flat spot. That's what I need for output shaft. It presses on tight.