3 ms·
> the helical gear box in those too is all plastic parts for easy and cheap replacement, and so that anything getting stuck doesn't burn out a more expensive el
by runnerup 4y ago
> the helical gear box in those too is all plastic parts for easy and cheap replacement, and so that anything getting stuck doesn't burn out a more expensive elctrical motor.
I preferred metal "shear pins" for this function ... much easier to find replacements for at the local hardware store.
- justinlloyd 4y agoNow that I agree with. Unfortunately their usage in lower end products, and also the move to lighter weight products with higher torque due to brushless motors, seems to have reduced their usage. Maybe because they are an all-or-nothing failure point. Unless you really abuse the gear box, plastic gears don't tend to strip out all at once, they just get "worn" or "sloppy." That said, I think a lot of products are a race to the bottom in some regards.