Rocket Cars are a Bad Idea.
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- เผยแพร่เมื่อ 22 มิ.ย. 2023
- I 3D printed an RC rocket car and in this video we're going to find all of the weaknesses. I used a combination of Traxxas Electronics, mini servos, a Noble NB4 Radio, Estes Rocket Motors and many more parts to make this thing.
- วิทยาศาสตร์และเทคโนโลยี
I watched a video once where someone was trying to use multiple engines for something, and had issues with the consistency of the igniters. In the end, they ended up making their own igniters from scratch. This made them all exactly the same, and worked much better.
First video of yours I've seen - I appreciate that you don't shy away from the details of how this build came together! Shame it didn't get to run, but I respect the decision to prioritize safety above all else. Best of luck with the revisions!
It’s takes a lot of skill and the vehicle to be very stable and made very well to handle and maintain those speeds. At those speeds everything is vibrating and any small interaction with anything will have a great effect on your car.
Been awhile! Thanks for coming back!
The old school way of doing suspension is an aluminum or fiberglass torsion system. Today you've got Aluminum, G10, and Carbon Fiber just 1 click away. I'd probably try to come up with a torsion suspension based on CF, because G10 might break if there is an unexpected impact. Then again, maybe Kevlar is the better choice because of resilience?
The fact that you mention resilience let's me know you know your stuff. These are great ideas and I can count on 1 hand the number of times I've discussed resilience with someone that actually knows what it is.
I want downforce in a version of a speed runner.
i would love to see your rocket car beat the 216mph speed record. whether it be by the rules they set or not.
Parachute break would be dope
I love the idea of the rocket car. Rossa's rule about the rocket motors being inline is kind of strange. It seems like they should be much more worried about the location of the center of gravity because a vertical inline configuration isn't any more stable, and possibly less if the car rolls from a bump.
I'd love to see a reverse thruster for a brake 😁
100% agree that CoG relative to thrust vector should be the concern.
I want to try and beat your speed of a 3D printed soeedrunner soon...maybe I'll throw a reverse thruster on that :)
Looking into multi stage rocket motors. There are some that will not fire the ejection charge out the top of the motor thus not launch themselves out of your test bed.
However a more viable option is to engineer a small escape route from the top of the rocket motor to the exterior of the vehicle. You will need one for each motor. But a small 1/4 inch tube mounted just on top of or near the top of the rocket motor and routed to exit the vehicle near the top will result in a path for exhaust gasses. This way they do not build up pressure and jettison the rocket motor. My guess would be routing them to exit out the top of the car would be they might add a small amount of down thrust to the top of the car and aid in traction or keeping the front down.
The estes motors I'm using actually are booster stage motors so they don't have an ejection charge. I think it's because they weren't plugged.
The venting is a good idea. This system is actually vented but for whatever reason I forgot to add the pass through in the adapters that allowed me to swap motor sizes.
Over all I love your unique ideas ! Maybe u could have used a disk brake that works with a servo like in the infraction
definitely worth the wait grate video bro
I was hoping to get some runs with the bigger motors but we'll save those for the next version
@EngineeringAfterHours I bet that the next version will be worth the wait as well
Man I love your channel. If I was as smart or creative as you, I wouldn't have to rely on my willingness to just smash up all my RC cars to push my young channel along hahahahah. Awesome stuff as always!
Also you should try and make your own rocket solid rocket fuel and and the motor casing on your own if you know what you are doing u can make just one very good and prolly kinda big rocket engine. Man I get pumped watching this thanks!!!
Use quick match fuse to ignite all your motors at the same time, from a single igniter
Is that similar to a visco fuse?
That fence height :O
Very cool!! I would make a larger and wider chassis and wider foam wheels . Anything foam if ur going 130- 150mph and more
Definitely need foams for higher speeds. I'm going to try and make the narrow chassis work for low drag. We will see if it pays off.
Fantastic video
Thank you!
might want to check into nylon coated fishing leader wire, quite durable and low friction ( unless the rocket exhaust gets stuck at a point for the time required to melt it).....
Good idea!
You should try to get the rc land speed record
I'm tempted too. But these guys like James Mccoy are upping the game weekly.
Nice!
Braided wire is a File/cutting tool…….so lots of friction😎
Lol...you are indeed correct. Gotta learn the hard way sometimes
Finally he’s back with a vid
Hah...had a lot of delays and got tied up with work...but I definitely have several built projects I just need to film and edit.
I have built similar cars. Rocket only is fine however suggest all motors in a vertical plane incase one or more doesn't light. I have seen r cars with G motors and it is important to have a teather steel cable laying flat in the road trailing the car so when the car at high speed hits a small imperfection in the road and decides to go airborne it is contained
Yeah if I were to cut this loose I'd need a lot of safety added
Very nice indeed. I have quite a lot of experience with rocket cars. If you want to speak about anything let me know. Cool video though
Ooo it's on... World record speed runs TH-cam over, here we go!
Let's hope it works out!!!
need a reverse or stopping device?? How about a deflector plate... passenger jets use a thrust diverter to reverse the thrust on the motors from rear to front... jet skis and boats also use the same device. It could be used for emergency reasons while thrust is being produced. Once the thrust is no longer available and its all inertia you are back to frictional brakes or snag hooks.
That's an awesome idea. Gotta be something high temp rated though
@@EngineeringAfterHours titainium comes to mind but tungsten is even better but way to heavy
I'm pretty sure on youtube there is a rule that you have to find an empty place and just send it.
Haha...100% needs to happen
ROSSA is living in the past they also only allow one brand of speed traps. It's just stupid... Build what you want to build and check speeds off GPS.
Most guys are not running suspension on the cars. Shocks have maybe 2mm travel due to travel limiters. Tires will be a big problem. Even with foams the diameter is an issue with existing 100-103 mm tires. You may want to design around the tires needed to safely go that fast.