Toy Jet Ski - Motorised and RC conversion

Toy Jet Ski - Motorised and RC conversion. This project has been running in background while I do other things so the build has taken a couple of months. The previous jet boat using this water pump was incredibly slow, this new one looks similar but I will still try it in a pond or lake soon.

If you have a question it is probably worth reading this video description first because the answer may already be here. To help you find my videos I made two search guides https://youtu.be/ceBSOoOHcgw or https://youtu.be/Zj4UgwkwYRk or checkout my playlists page https://www.youtube.com/user/GrandadIsAnOldMan/playlists?flow=grid&view=1

Main components
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Child's plastic toy jet ski.
I used Soudal expanding foam filler but there are many brands that will do the same job.

Here are the eBay listings I have used, they are probably well out of date. I am not endorsing these products I am just answering the questions people have asked.
The radio control transmitter and receiver listing http://www.ebay.co.uk/itm/190888163364
Last time I bought servos I got 10 on this listing 10pcs SG90 9g micro small servo motor Robot Helicopter Airplane controls http://www.ebay.co.uk/itm/291596081877
10A Brushed ESC Two-Way Motor Speed Controller With Brake http://www.ebay.co.uk/itm/131196233452
10A ESC Brushed Reverse Speed Controller 2KHz 5V 1A PPM Boat Without Brake http://www.ebay.co.uk/itm/231444824721

The eBay link I used for the water pump no longer works but this one looks similar 1PC 3V - 6V DC water pump / fuel pump RC BOAT h411 http://www.ebay.co.uk/itm/111723979716

Main Tools
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Hot Glue Gun
Sharp knife
Soldering iron

Filmed using Canon Powershot SX60 HS
Edited using Serif MoviePlus X6

Here is a selection of related playlists and videos
Water Jet Boat - Grandad's Junk Pile Projects #6 playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB0hOPEGWOYVtrLzBmgNTI09
Simple Water Jet RC Boat https://youtu.be/J-Ud-YrUb_U
Mini Submersible Pump Jet Boat https://youtu.be/a4Ia24rhENk
Water Jet power https://www.youtube.com/playlist?list=PLA5a2xPRSrB0pfu5VQgMPzOrChJKi6De4
Grandad's Junk Pile Projects https://www.youtube.com/playlist?list=PLA5a2xPRSrB3nEGP2gKbHDmCA-84uZ6b5
Radio Control Remote Control playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB13Xcquw4Ff09MQzTPjeVkI
Toy Boats https://www.youtube.com/playlist?list=PLA5a2xPRSrB24vUS9E8zkSgjZysEL00zr

I have thousands of videos on YouTube covering a wide range of subjects. To find them follow my search guides https://youtu.be/ceBSOoOHcgw or https://youtu.be/Zj4UgwkwYRk or see my playlists page https://www.youtube.com/user/GrandadIsAnOldMan/playlists?flow=grid&view=1
Generally my projects are for my grandchildren to enjoy. OK, I enjoy them too. If anybody else likes them, that is a bonus. I like to keep my work as simple and basic as possible so that it can be copied easily and improved by anybody who wants to try themselves. I recycle or repurpose items rather than buy new and when I do buy I like to keep it cheap.
https://www.youtube.com/user/GrandadIsAnOldMan