pic: GearBox (865)

[greencactus3]

Originally Posted by Stonefan5271138

Ya, that must've been why it was heavy. I didn't work on it much but I do remember that it was heavy. Must've been that, but is it actually possible to weld extruded aluminum to lighten it then if you actually plan on using it?

we found our extruded was coated with sumthing so if we ever wanted to weld we'd have to grind that stuff off. i think our teacher said it seemed like zinc coated. but we didnt weld anything and of course ended overweight
and that looks beefy.

[geo]

Our teacher welded the gearbox in our school (we are a technical school). We reduced the weight of this gearbox by shrinking down gears' hub and of course "speed holes".