AMB Mylaps mount
by brianhomer, published
This is for RC racing car use, sport timing equipment. you can install this in your car to count the laps timing. most of the racing circuit already has such facilities.
Just print it as is and fix this by screws inside your your RC racing car.
If you don't know what is AMB, but interested about this for your RC car, check out the following
Original one come with one mount, but additional one is not that worth to pay if you have 3D printer,