You said that the PLA was getting soft. Could you not use a spray uv plastic coating over it? PLA loves to absorb moister. You may have to put it in the oven to dry it out.
Exactly. Print a few nozzles with different diameters to find what works best for your boat. Larger nozzle = more low end power & a smaller nozzle = more high end power. You will need to find the right balance. Once you find the right diameter nozzle then move the top mounting hole position until you find the right trim angle. You could even use another servo for trim and tie it to the throttle channel with a curve /mix ( as throttle goes up the nozzle will pitch up). This will reduce drag on the hull by lifting the nose.
That silly big nozzle has been bothering me since the first jet boat he made, narrowing the nozzle will increase the speed at which the water leaves the nozzle and will 100% make it a faster boat
Reminds me of some films (movies) i have seen were a car pulls away and you here the tyres screeching as tho they are loosing grip even tho the car is not going fast enough
Yes I liked the heli sound with the drone too. The best part was jumping in the water and transitioning to the boat taking off. You make good videos dude... Keep up the great work.
robotmarketplace-dot-com has 24v 2.1hp motor about 110 dollars US. with a 2:1 gear reduction and aluminum propeller from YoungProp-dot-com (submerse props for trolling motors) you CAN build a surfboard or hydrofoil to get up to planing speeds. for a kayak a 300w electric scooter motor is actually plenty, running just 12v. use 5/16" shaft is a perfect fit inside 3/8" hard brake line tubing, perfect and inexpensive!
reduce the impeller/pickup diameter, or install a smaller diameter nozzle your looking to produce a JET of high speed water, not a flood of mid speed water. Also it wont plane because it is literally carrying like 3 lbs of water in your large diameter turbine assy.
Your also not planing because your vacuuming the boat down with the turbine tunnel... the front of the tunnel should point forward... go turn a jet ski over and have a look.
The best part of your videos are the extra sounds.. Helicopter drone and jumping into the lake with the water drop.. You deserve all the popularity you get. Definitely one of my favorite channels on youtube and now I have a 3d printer to start making my own rc toys.
You’re my latest “discovery” attended by RU-vid to watch. Man this is pure and funny. I like the projects, the humor, the fails and the good results, the good movie quality, your English. Should I go on? I think your movies are far under valued and you deserve mutch more views. Go for it, Simon!
I think that you should have used the positive pressure side of the thrust system to cool the motor :) A small tap pressed though the side of the turbine housing, just like you did with the bottom, would have done wonders!
yes, my water pickup for surface drive props are behind the top tip of propeller, what would be part of the rooster-tail is forced into the tubing without causing drag on the hull bottom. edit: near impossible for it to get clogged too.
@Cambpictures Exactly, that’s what I was thinking… You match the size of the orifice of the tap, so that it provides the right amount of cooling for the motor.
Love your work! I've watched your stuff for over a year now and gone through all your old stuff too. Great filming, editing and projects! Your uploads are better quality and have more interesting content than anything on TV these days.
yes, you are moving way more water volume than you need! Making the nozzle taper to a smaller opening will increase the velocity of the water a great deal. There is a happy medium between volume and velocity of water that is most efficient. For your setup, it's going to be quite a bit smaller opening with a longish taper. Probably 1/2 the opening output size you have now I would guess...
I was a long time RC helicopter guy until i had my son. Now he’s old enough to get into RC stuff with me, so im excited to dust off the hobby room equipment. I have decided helicopters are too time consuming and you have inspired me to do drones and oddball type projects like these. The hobby takes on a whole new dimension with 3d printers, we have a Prusa mk3 that should be more then capable of printing frames and other stuff. I have years of high end RC work gear, soldering stations, fabrication parts like carbon fiber, containers of connectors, servos, bl motors, speed controllers, etc. thanks for your wonderful videos showing how far the hobby has c0me
OMGosh, Simon, the sound effects were cracking me up. The "blurp!" over your cannonball into the lake, and the helicopter for the drone footage! Excellent. Glad the Hobby King motor and battery upgrade were a success.
Cool project, fun coments and a really nice editing job. Even desent english, witch made it a bit more interesting when i saw your location, i live 8km away.. Keep up the good work!
I dont understand how anybody could possibly dislike this video. This is high quality content. You Sir, are going to be an awesome engineer! Greetings, an engineer.
Electric jet skiis seem to have faster acceleration than gas models. I think that you should design a mini jet ski that you can ride and double your power with two motors.
Just a tip. I raced full sized jet boats with the same jet drive design. Instead of using the inlet in front of the intake for the motor cooling. What we do in the full sized boats is put the inlet in the pump itself after the impeller. The pump pressure feeds the water to cool the engine, or motor in this case. Also, the nozzle seems very large for what I would expect of a boat of that size and power. Honestly our full size race boat has an opening maybe only double that size. So it seems very large for the scale of the boat. Not sure if you experimented with different sizes when making it. But I would expect an opening half that size, maybe even smaller to get the water moving much much faster out the nozzle, similar to how a garden hose works when putting your thumb over the opening. Really cool stuff, keep it up.
Did you make that Pontoon Barge aka SS Duct-tape? I Al.most forgot the main comment... If you would decrease the output size of the jet nozzle by half it will accelerate the water much faster. Also seal the part where that water is leaking and shooting up. making a new nozzle will easily give you 2x the speed.
I'm so impressed by your ability to drive an RC boat while simultaneously following it with a drone. Or how you get a tracking shot while driving the boat! Great video man!
Hi, With your nozzle how much are you compressing the water after the impeller? Also the steering nozzle should taper down to compress the existing water. With my hamilton jet boat with a hamilton 773 jet unit has a Scott tilt steering nozzle which can tune be fitting different inserts into steering nozzle which changes the nozzle diameter. As someone else said take cooling water out after the impeller.
cool vid nice boat ,ive done a lot of boats in my time and some over 80 mph if you want to get a little more speed in a simple way sand the bottom of the boat so it is not smooth it will break the surface tension ,it work its a trick that was given to me
Nice boat! can you make some kind of 4x4 all terrain rc car with an arduino or a raspberry pi? You could even make it so it could drive when it flips by giving it bigger wheels
I am freaking out about your project. It is just beautiful and gorgeous . Build a rc boat is one of my goals in life. But how did you design and create the hull. With a pc Programm and a 3D printer?? In this case, which one??
Amazing editing! Thank you for sharing your maker's endeavours. My first RC experience have been FPV multirotors but RC boats look like a lot of fun (in summer at least).
I just love the way you narrate your videos. Looks like you have sound construction. Your speed is a matter of an effective propulsion solution. Great scientific built!!
I love it when you talk swedish! Makes me want to see more of your beautiful country, I've only been to Stockholm. Keep up the great work, it's always a pleasure to watch your enthusiastic soul produce awesome content
Super cool. I really like some of the unique ways you capture video. A possible solution to the leaky rear would be have a recessed circular groove that you could put an O ring in. Keep up the good work!
Its pretty cool but does the water cooling works? I mean it probably is because there is no surprise smoke coming from it but can better cooling boost the boat even more?
