Interesting….
yes the SD card setup allows you to set inertia to 0 but yet they still had inertia and it would not turn off.
even the maker Ivano in Italy confirmed it had a low level of inertia that could not be removed. Which I thought was stupid and then we had a an argument via email about how a heavy tank actually drives etc. he did not understand my point of prototypical slow tank movement vs how you drive an an IR battle so we got nowhere.
the gentleman in my club with a very nice Abrams used an ultimate after he was told that inertia issue was fixed, I watched him drive it and knew it wasn’t. After a while of him trying to battle it he realized how different it drove and how difficult it was to maneuver around on the field so he just put the tank away and used another one.
I can check with Ian in the Uk at RCTank Electonics if the inertia has been removed but like I said I check in with him about every 6 months and he has continually told me that IBU has no intention of fixing the issue.