The Artificer |
Alright, Since they have strength 14 they can carry 7 bulk without being encumbered.
However... "Any Small or smaller creature can ride your mule drone, and the mule drone can be customized to support a specific Medium creature (normally you, if you are Medium)"
So, they can carry all the bulk that the rider can carry, up to the riders carry capacity.
The Artificer |
For that matter, how much Bulk is a Medium creature? How much is a Small creature?
Now that's a hard one..
I think realistically bulk ever only applies to items from the books,
So, I don't think it should apply to mounts.
Creature companions have this rule
"You can mount your creature companion as long as the total amount of bulk you’re carrying doesn’t exceed your carrying capacity. If you have the encumbered condition (or gain the overburdened condition) while mounted, your creature companion gains the same condition while you are riding it."
So that with this entry
"This medium quadrupedal drone is designed to act as a MOUNT and carry heavy loads, just as mules and other beasts of burden are used throughout the galaxy."
Make me sure you can ride it without defining the bulk of the Rider's own body.