This is the building forum for the Combat Boat 90. If you are interested in the STL's for this project, they are available to those who help me by contributing 15 Euro. Then you get access to a sub-forum where STL's, instructions and mods are located.
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Re: Equipment

Postby admin » Tue Apr 10, 2018 9:42 am

I don't have a suitable battery at the moment, mine I tested with the first time was way too big, so I borrowed one from a friend. :)
I guess it's just a matter of checking the dimensions, there are tons of batteries to choose from at Hobbking, otherwise write the dimensions you can get into the battery hatch and go to your local dealer and check.

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Joined: Tue Apr 03, 2018 1:29 pm

Re: Equipment

Postby 3dNoob » Fri Aug 23, 2019 2:40 pm

Any updates on how the following equipment performed? I'm building my first model boat so just want to make sure this is the correct/recommended equipment for this project. Am I missing any parts?

LED: ... 9LfDAzlZEQ
Radar: ... -lzsdrwl6w
ESC (x2): ... -ubec.html
Transmitter/Receiver: ... ystem.html
Motors (x2): ... 030kv.html
Battery: ... -pack.html
Engine Parts: 2mm carbon fiber rod / 3mm bearings
Servos (x4): ... c-10g.html
Miscellaneous: Piano Wire

thanks to @admin and @joseamirandavelez for sharing your setups. How did the b20-40 brushless motors work?

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Joined: Sun Aug 23, 2020 5:47 pm

Re: Equipment

Postby Math » Tue Nov 17, 2020 6:47 pm

This is my first attempt to build an RC boat.
I would need some help finding the right engine for the boat.


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Joined: Tue Nov 19, 2019 9:26 pm

Re: Equipment

Postby Oscar » Sun Dec 06, 2020 10:36 am

Is there any news about suitible electronics such engines? With or whitout build in water cooling?

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Re: Equipment

Postby admin » Sun Dec 06, 2020 10:38 pm

If I would build a new one right now I would try these motors: ... ooled.html

There is a thread called "My mods (Modified motor mount and water pressure outlet from impeller duct)" and in there is modified motor mount STL's that I think would fit this motor. I haven't printed it myself so I cannot guarantee that it fits but I think so. There is also a Fusion 360 project file included so if you need to modify the mount and have Fusion 360, it should not be a big project.

There is no specified current for the motor as I can see, but I would go for at least 20A, probably a 30A. Also remember that you don't need a speed controller with forward/reverse, as the water jet reversing buckets takes care of that.

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