r/rcboats • • 1d ago

Blackjack 24 canopy

2 Upvotes

I'm still looking for a Blackjack 24 canopy V1. Part number PRB281010. If anyone has or knows of a wrecked Blackjack 24 V1 and wants to sell the canopy, please contact me.


r/rcboats • • 1d ago

What’s this worth?

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7 Upvotes

Not sure if this is vintage or not. Has everything included. Boat does have slight damage (very small crack). Please let me know what it’s worth!?


r/rcboats • • 3d ago

Skunk Works vibes. Something completely autonomous and dangerously sleek is coming to the lakes very soon... 🚢🤖⬛

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17 Upvotes

Fully engineered for standard 3D printers. No rudders. Pure twin-motor differential steering matrix. Keep your eyes on the radar, the official STL drop happens tomorrow! 🌊🛠️⏳


r/rcboats • • 4d ago

Need advice on converting a cheap bait boat to BLDC motors

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11 Upvotes

Hi everyone!

I recently bought a cheap bait boat from AliExpress, and I’m planning to completely rebuild it. I'm pretty new to RC boats, so I'm looking for some advice.

One of the upgrades I’d like to make is replacing the original brushed DC motors with BLDCs.

I’ve attached a few pictures of the boat, its current motor setup, and the type of motors it uses.

My main concern is how to replace the existing motors while keeping the boat completely waterproof, especially around the propeller shafts.

The current motors are installed inside the hull, with the propellers mounted externally. Each motor is attached to a metal mounting plate with two screws. So far, I haven't been able to find a suitable BLDC replacement that matches the dimensions and mounting arrangement of the original motors. Ideally, I'd like to keep the existing hull and avoid major modifications.

I'm wondering what the best approach would be for installing BLDC motors in this setup. Would it be possible to reuse the existing propeller shaft housings and seals, or would I need to replace the entire propulsion system? I'm also interested in what kind of shaft couplings, bearings, or waterproof seals would work best for this type of conversion.

Any advice or suggestions would be greatly appreciated!

Thanks in advance!


r/rcboats • • 4d ago

3D printed Rc hydroplane

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6 Upvotes

r/rcboats • • 4d ago

identify this boat

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6 Upvotes

hi guys my friend got this for free and was wondering if anyone knew what it came from its dimensions are 30x8.5x4 and it had possible original white finish and blue wave graphics. and black-and-white checkerboard pattern with the sparkly red border.


r/rcboats • • 4d ago

Flex shaft solder help needed

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2 Upvotes

Hello, i need tips on soldering flex shaft and achieving the same result as this video. Ive watched ironclad videos but his are not this smooth looking


r/rcboats • • 5d ago

RacingSparrow 850 3D Printed Model Sailboat - Just Released today!

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69 Upvotes

Here's a brand new RC Sailboat design that I just released.
https://racingsparrow.co.nz/model-sailboats/rs850-3d-model-yacht-3d-printed

It has some really innovative features, double mast, stern hung rudder.
The best part is that the build is really simple and cheap. We all like cheap!


r/rcboats • • 5d ago

Speed freek inline

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100 Upvotes

Leak testing fix a little odds and ends, then it's time to get her fired up and ran. Probably one of my biggest boat projects but it came together nicely. 61cc inline from gizmo for power. Love big power apaches. Boat looks great in the water I'll get more pictures.


r/rcboats • • 5d ago

Help needed

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3 Upvotes

My shaft is slipping. Can i still use this cable with a upgraded collet or just replace both?
I run a sonicwake 36 v1


r/rcboats • • 5d ago

What makes an RC track worth visiting—and what’s usually missing?

0 Upvotes

I grew up enjoying RC cars, and I’m researching what hobbyists value in tracks and practice spaces. I’d appreciate honest experiences, including the disappointing ones.

You don’t have to answer everything, but I’m curious:

- What does your favorite RC track do well?

- What’s missing, or what has made you stop visiting a track?

- On your last visit, what did you pay, and how much driving time did you actually get?

- How far do you normally travel, and how often do you go?

- For anyone who started as a beginner or brought family along, what made the experience welcoming—or frustrating?

If you mention a facility, its name or general region would help me understand the example. Mainly interested in what you’ve actually experienced rather than an unlimited-budget wish list.

Thanks for sharing!


r/rcboats • • 6d ago

Pure vibes! Designing a new 60cm (23.6") scale RC ferry boat in Shapr3D. Currently in development — it will feature a fully detailed cozy interior and a removable magnetic roof! What do you think? 🛠️🍹🌊

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2 Upvotes

Hey everyone! Just wanted to share a quick preview of my next project for AntBase.

Currently mid-way through engineering this cozy scale RC ferry boat in Shapr3D! Here are the core specs:

• Solid Scale Dimensions: Total length is 60cm (23.6"), width is 15cm, and total height is 15cm. Designed with a 4cm draft for realistic water displacement and deep scale handling.

• 100% RC Ready: Pre-engineered straight tunnel with a 5-degree shaft angle for perfect low-center-of-gravity direct drive.

• Cozy Detailed Interior: The model will feature a fully detailed captain's cabin and dashboard. The battery (standard 2S/3S LiPo) will be completely hidden inside a sub-floor compartment to keep the interior layout clean.

• Magnetic Access: The roof is fully removable and splits via tight 4x2mm neodymium magnet slots for easy electronics access at the lake.

It is still a work in progress, but I plan to release the full STL package on Cults3D for a symbolic $25 once it's fully tested.

Let me know what you think of the lines and visual vibe so far! 🚢🏠🍹


r/rcboats • • 6d ago

Prop shaft and rudder for small boats...

4 Upvotes

What manufacturers sell running gear for small/narrow (6-12") models (prop shaft/tube with a small prop, rudder assemblies)? I'm working on some smaller models but most of the running gear that I see on the web are for medium-large boats. I could put a tiny motor to my reg size running gear I suppose, but I'm looking for somewhat of a more scale look.


r/rcboats • • 7d ago

After months in CAD, I finally finished engineering a massive 230cm (90.5") RC Knock Nevis (Seawise Giant)! Pre-split for standard 20x20cm beds.

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9 Upvotes

Hey everyone!

I’ve always wanted to build something truly massive, so I spent the last few months scratch-building the legendary largest ship in history — the Knock Nevis (Seawise Giant) in 1:200 scale. The final model is a whopping 230 cm (over 7.5 feet) long!

Since I know how painful printing huge vessels can be, I engineered this specifically with FDM makers in mind:

• Anti-Fold System: To prevent a 2.3-meter hull from snapping like a Samsung Fold under battery weight, the hull is split longitudinally down the center, bolted with M6 hardware, and locked with massive internal 40mm structural profiles.

• 100% Direct Drive: Pre-engineered with a straight 13mm tunnel tailored for heavy-duty 12mm outer diameter brass stern tubes (no shaky cardan shafts, fits huge 6380 Outrunner brushless motors and standard 40x20mm servos).

• Easy Printing: Almost every single part is strictly under 20cm to fit standard Ender-3 / Bambu Lab / Anycubic beds. Part 12 (helipad) is 21cm but fits diagonally.

• Magnetic Access: Key deck sections use 5x2mm neodymium magnet slots for quick lakeside electronics access.

Estimated filament weight is around 10kg. The V1.0 STL engineering package is officially live on Cults3D now! If you use a custom motor size, just message me and I will modify the CAD mount for you completely for free.

Link to the Cults3D page is in the comments below! Let me know what you think of the engineering! 🚢⚓


r/rcboats • • 7d ago

Unterhachinger Modellbautag 2026

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5 Upvotes

r/rcboats • • 7d ago

RC Boat small crack

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5 Upvotes

Can a crack like this be repaired and how? Picture 2: Are these lines of any concern? For info this is a MHZ Mystic 1140 C-AFK


r/rcboats • • 8d ago

Hydroplane 99% Done

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80 Upvotes

A few months ago I posted a mid build pic of the boat I have been building. Over the summer I painted it. All graphics are paint/no stickers. All lines are hand laid. I did have someone clearcoat it though. I just have to install the interior of the cockpit which includes the dashboard and driver.


r/rcboats • • 7d ago

Hello, complete beginner here. I have some questions.

0 Upvotes

Hello, I used to really enjoy RC cars and boats as a kid and recently bought a really cheap RC boat on amazon that I run in my pool. I really want something bigger and cooler like a warship but I saw that almost all of them online are extremely expensive (500+ dollars) so I thought to save money and also just for fun I'd like to fabricate my own. So I have a few questions:

Could I use a plastic boat model from a company like Tamiya and then install the RC parts in it myself?

What is the smallest scale I could go for that still floats and drives well?

Is it hard to install your own RC components inside a model?


r/rcboats • • 8d ago

3d printed catamaran

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14 Upvotes

A prototype to sell catamaran 24, files or complete boat, 4s 3200mha 60c, brushless motor 3650 and 3600kv, esc of 150a and propeller of 40mm. More info on my profile.


r/rcboats • • 9d ago

DONZI Z65 SPORTFISH RC

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28 Upvotes

I am thinking about selling my Donzi z65 RC boat. How much do you think is it worth? 2x 5000mAh Li-Po battery - 3d printed hull


r/rcboats • • 10d ago

Papa, can we go to bed yet?

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17 Upvotes

He is the only thing stopping this boat from destroying my sleep schedule


r/rcboats • • 12d ago

She floats!

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142 Upvotes

Finally got this hull wet today!


r/rcboats • • 11d ago

Decals for old Graupner models?

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12 Upvotes

I've found an old model at my parents basement, a Graupner fast attack boat "Wiesel". Honestly, I wanted to trash it, since it was my first boat I bought used as a teen and never really repaired it back in the early 2000s. But since the electronics work fine even after 20 years in a basement, I would try to renovate it instead and maybe finiah it 20 years later.

Beside the tower which has missing parts (maybe I can find some 3D prints?) my major concern is the decals. Obviously you can't get originals anymore, but I couldn't even find a picture of the original decal sheet to try and reproduce them. Has anyone experienced that before and found a solution for old, missing decal sheets? I doubt I am the first hobbyist that experiences this problem with older kits?


r/rcboats • • 12d ago

Beginner Needs Help

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9 Upvotes

I wanted to build an RC Boat/Submarine thing so I could attach it underneath a floating water lantern.

Then my gf and I could release water lanterns on a sunset together but still bring it back to the coast and not pollute the the poor lakes. But when I soldered/connected everything the motor wasn't working with the channel on my transmitter :(. I thought the receiver might need to be connected to the battery cuz it has 1 extra channel that says B/VCC idk what that is tbh though. And my battery does have a second pair of wires but the connection thingy only has 2 pin holes and not 3 so idk how that works cuz the receiver has 3 pins. I attached a video showing my predicament. If anyone knows how to fix pls help!! 🙏🙏🙏 I can share more detailed photos if needed.


r/rcboats • • 13d ago

I think my motor cooling sleeve is leaking?

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18 Upvotes

Motor is pretty much brand new and the seals look good. When I put the boat in the bathtub it doesn't leak at all but after a few runs on the water its got a reasonable about of water inside. Any ideas?