On page 32 of Dangerous Covenants is the Talent "Improvised Detonation", which allows the character to make an explosive device out of available materials, once per session, based on a Hard Mechanics check.
When our group was playing Long Arm of the Hutt a few months ago, they were at the mining camp and they wanted to take some of the explosives used in mining and rig up a remote detonator to a speeder, so they could drive the speeder into the enemy camp and explode it with a remote control.
I forget the details of the check, but I basically ruled that it was a Hard Mechanics check, maybe with a Setback or something.
Basically my question is, what does Improvised Detonation give you that you wouldn't already have? What would you do if they wanted to improvise an explosive device but they didn't have Improvised Detonation?
One possible guess on my part is that the check might be harder, especially if there are no specifically explosive materials nearby. In our case, they were at a mining camp so I ruled there would be some explosives which could be jury-rigged this way.
What do y'all think?