I got to crash test my Goblin 570 today because the Tarot S.Bus inverter is junk. I had one fail on me yesterday before a flight, but, since my X3 is down for the moment and I wanted to fly, I put the X3's Tarot inverter on my Goblin 570 and flew today. That one failed as well, except, during flight.
The Failsafes on the Spirit worked perfect and the heli crashed well, a little over $100 crash, however, it could have been prevented if I just waited for the Spirit S.Bus inverter to arrive. It is much better quality and much more heavy duty to withstand the currents going through it.
Again, do not use the Tarot S.Bus inverter with anything over a 450 class heli.
Here's a pic of what failed. Super thin copper film carrying all that current through it.