Category: How-to Guides

Tuning the exhaust pipe on your model gas boat

Let’s face it, by virtue of human nature we are all looking to build the fastest boat at our local pond.
While you will probably find the most beneficial speed gains through setting up your hull properly.
The majority of us start by throwing different props, pipes and petrol at our boats.

Click here to read more


AC Model Boats R42 (Assembly Instructions)

AC Model Boats have a reputation for superior design and quality finishes. Owned and operated by Andy Stishenko, AC have been designing and manufacturing model power boats since 1983.
Extremely popular throughout North America, the R42 catamaran is one of the most popular choices for modelers racing in the gas powered tunnel classes.

Unfortunately being based in British Columbia, Canada. It’s not an easy task to get your hands on a genuine AC Model Boat here in Australia.  Fortunately, through months of research we managed to find an economical shipping route to get our hands on the latest version of the R42 (now 43″ inches long).

Click here to see the complete build of the AC Model Boats R42 catamaran 43″ race tunnel.

Deltaforce Annihilator 53 (Assembly Instructions)

We were appointed as a Deltaforce dealer in 2016 and have imported the entire range of their gas powered monos into Australia. Used by racers around Australia, these hulls have been designed with one thing in mind!

Winning races and keeping costs below what you would expect to pay for a race winning hull.
Manufactured in Hong Kong from a specialist composite workshop, the quality of these hulls is fantastic.

Click here to see the complete build of the Deltaforce Annihilator 53″ race mono.

Tuning a Walbro Carburetor

Carburetors require regular adjustment to ensure peak performance, and also to avoid an unsafe lean condition, which can prematurely damage your engine. If you find your top-end RPM’s have fallen off a bit, or if you experience lagging or surging, it is probably time to re-adjust the carb needles.

The carburetor is provided with 3 adjust screws they may need a little adjustment depending on the temperature, atmospheric pressure (altitude), etc. of the area where the engine is used.



Everingham Race Special (Assembly Instructions)

Everingham Race Special

Everingham Race Special

We have just posted up a complete build photo log of the new Everingham Race Special. This is the latest model boat from Gary and Bert Everingham.

Forty-seven inches long and packing some serious punch.  This build was planned with performance in mind. Powered by one of the new full mod Torpedo Race Engines 29.5cc and the entire range of Torpedo performance accessories including the Hi-Flow Rudder Set.

Checkout the build page for all of the photos.

Cheap and Easy Prop Box

Prop Box

Prop Box

We are starting to invest in bigger and more expensive props for our gas powered model boats. Until today they were being stored in a cheap and nasty lunch box. Finally we pulled the finger out and used some common sense to build a cheap and easy prop box to protect our investment.  All of the parts used should be easily available from your local hardware store.

A simple and effective case that you can lug around to your local boating spot.  Not bad for the same price as a case of beer! Click on more below to see the full photo tutorial.


Fuel IV Bag System


Fuel Bag System

Here at RCBoatBuilder we are split down the middle on two different methods of fuelling our modified Zenoah engines in our RC boats.  Daniel uses modified nitro gas tanks to store the fuel in his hulls and Aaron uses modified medical grade intravenous bags.

Today’s how-to guide covers the intravenous (baxter) bag option.  IV bags, fuel bags, fuel cells, gas bags and fuel bladders; are a group of commonly used names for polypropylene bags that can store fuel in RC boats. For the purpose of this article we will refer to them as a fuel bag.

One of the primary benefits of running a fuel bag setup is that it creates a closed fuel system. Standard vented gas tanks are susceptible to inhaling water in the unfortunate event of you flipping or sinking your RC boat.

As always to read more and to see photos of a fuel bag installation, simply click on the ‘more…’ button below.


45″ Thurgarcraft (Assembly Instructions)

Thurgarcraft 45" Open Deck

Thurgarcraft 45″ Open Deck

Last month we built our first gas boat, this month we build another 45″ Thurgarcraft open deck with a Zenoah G300PUM.  You ask why?  Well this time we are throwing in a pretty serious engine combo to see if we can challenge our 111kmph record, set by the electric version of this hull.

In order to challenge the record we have sourced what we think are the fastest modified Zenoah’s in Australia.  None other than the Omen Race Enginge, combined with a CC Racing Monster V2 exhaust coupled with a Gizmo Racing Walbro 1048 modified carburetor.

As always, click on ‘more…’ below to view all of the photos we took during the build and of course a video of the finished product.


45″ Thurgarcraft (Assembly Instructions)

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Thurgarcraft EVO45 Hull

Our first large scale electric builds were assembled with EVO45 capsules built by our friends at Thurgarcraft.  We love these hulls, particularly at high speed where they need to be driven.

Finally getting the bug to build some more gas boats, we managed to get our hands on two more  EVO45 ‘s but this time with an open deck design. The open deck is better suited to a gas powered setup, allowing the power unit to breathe.

For this particular hull, we installed a stock Zenoah G300PUM using a quick release motor mount, fueled by an IV bag system.

As always, click on ‘more…’ below to view all of the photos we took during the build and of course a video of the finished product.


36″ Silver Fox Catamaran (Assembly Instructions)

R2 Hobbies Silver Fox

R2 Hobbies Silver Fox

Summer is here in Australia, we are pretty lucky to have daylight from 6.30am until 9:00pm thanks to daylight savings!  This leaves us with plenty of time to hit the pond after work and on the weekends.

We have not posted an update in a little why so we thought we would upload some photos of our latest build.  We have not completed a full build log as this is the fourth catamaran we have assembled from the R2 Hobbies 36″ Silver Fox  hull.

For more photos click on ‘Continue Reading’ below!


Get started with RC boats (Electric).

RC Boating

RC Boating

Getting started in the remote controlled boating hobby doesn’t necessarily need to be expensive, there are an array of entry level packages that come with absolutely everything you will need.

These are often a good way to gauge your interest in the hobby and see if you will enjoy it as much as we do. In my opinion your not wasting your money here, if you enjoy the hobby in the long run you will most likely get a kick out of running your very first boat well into the future.

To read our complete getting started guide click ‘Continue Reading’ below.


SeaKing ESC 180 amp (T180) half throttle

T180-ESCWith summer just around the corner here in Australia, It’s time to get the boats back out of hibernation and serviced ready for another glorious RC boating season!

One of the big problems I experienced last summer was my old faithful Turnigy 180 amp speed controllers falling into protection / limp mode.  Basically this meant that the boat would not go beyond half throttle as the ESC was trying to protect itself from a perceived voltage drop/error from the lipo batteries.

Click on ‘Continue Reading’ for an easy fix!



Carbon Fibre Genesis 900 (Assembly Instructions)

TFL Genesis

TFL Genesis

My first RC boat was a fibre glass Genesis purchased from hobby king. These hulls come prebuilt and you simply drop in your own electronics such as a speed controller, motor, batteries and radio gear. Over the following weeks, I found myself on the hunt for more and more speed. In order to achieve my goals, I found myself completing modifications to the hull. These included upgrading the driveline, steering and battery mounts. After completing these mods successfully, I decided it was time to tackle my first scratch build of an RC boat.

Click on ‘Continue Reading’ below for the complete build log!


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About RCBB:

RC Boat Builder is a digital repository for all things Model Power Boating. Both Aaron and Daniel who manage this blog have been passionate about all things RC for over two decades.

The purpose of this website is to provide RC Boat enthusiasts with pictures, videos and step by step guides to help you enjoy the hobby.

It doesn’t matter if your bashing your boat down at your local pond or oval racing with your local club. You will find a bunch of information here to support you.

We hope you enjoy your visit and if you have any questions, feel free to drop us an email by using the Contact Form.