RC Soviet aerosled - Sever-2 - modifications

I made some modifications based on
https://www.thingiverse.com/thing:5277212/files

for this great model
https://www.thingiverse.com/thing:4496127

The ski are more like on the photos I found on the internet. Also I made a very wide version.
The tray is now having a receiver box.
I shortened the hub-arm.
Made a servo arm for the 9gr. servo.
Reworked two chassis parts to add a switch housing and to include the "magnet_bottom_side.stl".