Jon - I saw those on your car at Vegas, thats a cool idea. The only thing is can you pop those off if you need to take the bearing off the outdrive? Then just CA em back on? Blades sure wear even faster when your spool outdrives spread
Car - There is no tray on the EC or battery strap, we've found the tray and battery straps can tweak your chassis (tape can to, but it wont if you dont strap it like a cave man) and besides those add weight
. I presume the battery position will be the same (middle) on the 2mm and 2.5mm chassis.