u/Yorkfire1

Just sent out my first bga design(.8mm pitch, 3mil spacing) to the board house and received a response that stated I have vias in pad and this service will add 125 dollars to the quote. My vias that are in pad are only for the caps connected to the voltage rails. My research showed that this is typically not considered via in pad because the via is not located on the bga pad, but on the dogbone via. They said I dont have to fill the vias but this increases the risk of shorts and poor soldering quality. So my question is how risky is it to not fill the vias? Not sure if I should just pay for via in pad service or accept the risk if it is low enough for .8mm pitch.

My BL-2s esc has failed in my kids mini maxx and I hear lots of people saying to ditch traxxas esc's and go with hobbywing or castle. It looks like the 10BL60 G2 will work nicely, but I wanted to see what others are doing. I want to use it with the current BL-2s motor until it fails and then switch to a hobbywing motor as well. Also, curious if I have to use double sided tape for mounting or if I can get an adapter plate to mount it?