32" Wild Thing mono 70+ mph

[Dirk Jan]

Hi rc boat friends, last year I made a 32" Wild Thing.



I run a Rocket 4074 2000kV motor, Flycolor 150A esc and 6S lipo. My goal was to reach 100km/h or 62mph. But this boat absolutely screams and I got 71mph already.

Im still trying different setups and I show it in my videos. Here's a running video of the 71mph run:

https://youtu.be/R3k_HMAXp3A

[Bande1]

Dude dont tell people about rocket motors.

can you post up some more pics of the boat for us? looks really nice.

[T.S.Davis]

Mike did a killer job on the framing inside these. Keeps everything straight as an arrow during the build.

[Dirk Jan]

Actually I modified the Wild Thing design to adapt better to an FE setup. I changed the bulkheads design as well. Here's some pictures:













If you're interested in more details, you can view my build videos of this boat:

DIY rc boat: 60+ mph mono hull 'Wild Thing' - build videos: https://www.youtube.com/playlist?lis...C0ESXjSuLmPzlB

[Bande1]

Oh that is clean and nice. Apparently I'm already subbed to your channel.

[ray schrauwen]

In the video at the top, the last few seconds you can see the motor and it looks like you opened it up or tried. I tried to open a 3680 GoolRC motor without heating the loctite on the screws and I stripped the head off one. I just wanted to see it's construction. Why, if so, did you open yours up, modified?

[Dirk Jan]

You spotted that right Ray. Just before a meeting I felt the motor did not turn freely. I had to open it up to see the cause. The original fasteners were Torx 5 size. I don't have a Torx 5 wrench, so I drilled these fasteners to open the motor.
I found the stator had 2 M3 washers sticking to its magnets. Once removed, the issue was solved. I just had to drill and tap some new holes for new fasteners to fix the motor flange.

These Rocket motors have a very open end bell. That is a disadvantage, because metal parts could easily access the motor there and stick to the magnets.

[Bande1]

better heat dissipation though. wonder if you could attach some kind of screen material or something over the end bell?

[paulejr]

Very nice boat. It's great when expectations are realized and then some ! I bet window screen would be a good filter for metal parts, especially the non metalic version found at most glass shops?

[Dirk Jan]

Thanks Paul. Yes, window screen might work. I think I will just take good care that I don't have any metal bits laying in my hull [emoji6]

[paulejr]

Funny you should mention metal parts in the hulll...............

[Dirk Jan]

Funny you should mention metal parts in the hulll...............

I didn't catch your meaning Paul?

[paulejr]

LOL, I had lost a 4-40 nut and could not find it .... so after a run at the lake I brought the mono home and in the process of removing the batteries , i found the nut ... stuck up under the motor ..

[Dirk Jan]

Ah yes, I had that before as well [emoji28]. Anyway, better on the outside of the motor!

[Dirk Jan]

I broke my speed record today, reaching 116km/h.

I also tried my new rudder setup with great success. Cornering improved by using a longer rudder bracket and a wider rudder blade.

Here's today's video of the testing and tuning:

https://youtu.be/VSabriomEw4