I have inlcuded 2 pictures of the support wich is needed and a build video on my Youtube channel the motor is out of a wacuum cleaner called the Rowenta Airforce 360 so its the Nidec motor 21F706L040 (see picture).
for the servo mount i used this one: https://www.thingiverse.com/thing:2988830/files
if you dont have a sevo arm you can download one here: https://www.thingiverse.com/thing:5428914/files
PROPS:
The toroidal propelller is designed by JWoodrell https://www.printables.com/de/model/619042-toroidal-boat-prop-swept-blades
and the otter one was designed by efoil https://www.printables.com/de/model/576544-toroidal-prop-for-efoil/files
the NORMAL prop was designed by SmilingImpact https://www.printables.com/de/model/226476-rc-boat-propeller
PARTS:
speedcontroller and a motor : https://de.aliexpress.com/item/1005005293706657.html?spm=a2g0s.12269583.0.0.7389282bQ2wvMn&gatewayAdapt=glo2deu
radio and reciver : https://de.aliexpress.com/item/1005003052704561.html?spm=a2g0s.12269583.0.0.227550fehH9IiF&gatewayAdapt=glo2deu
If you are not able or dont want to buy a vacuum just for this boat you might have to make a adapter or you have to ask me and if I get asked a lot i might make one myself.☺
The author marked this model as their own original creation.