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good vid.. slick tranny !!!!

يستحق الاعجاب ‏‪8:02‬‏

Hi, I'm a mechanical engineer mostly doing hydraulic stuff for test systems in the automotive industry. Your system is impressive. I've seen some issues which caused the leakage and the which will damage your cylinder over time. First of all the shaft seal has to be connected to the suction side of your pump, so it wont be pushed out when the pressure is rising. Second, your cylinder is bolted down to the table, therefore the piston rod is bending and putting untypical forces to the cylinder head. Your piston rod will wear down the cylinder head fast and it will beginn to leak. Mount your Cylinder in a way it can swivel with your construction. You have negative forces put on your cylinder. Therefore it retracts to fast, almost with no resistance than friction, in industrial applications this can cause heavy damages. You have to preload the retraction movement with at least in line a relief valve or better with a counter-balance valve. In your case this doesn't matter, but it is something you should be aware of. But really nicely done. Kind regards and a happy new year!

Thank you hoping I can modify this to work with my rescued jack Russel who was thrown out of a car and has neurological issues which causes balance issues. Thanks

that would be amazing with my sim rig and some fpv

हेलो भाई इस सस्पेंशन काम कैसे कर रहा है बताइए ऊपर नीचे झटका को अब जॉब करने वाला

Pair this with the video I saw using a Logitech wheel, fancy transmitter, and FPV goggles with a head tracked 3-axis gimbal camera and you'll never peel me off it

I absolutely love the amount of engineering put into this

Good luck with your project. It looks very interesting.

Hi Sir, I'm a mechanical student studying in india. I really liked the ideas of design that you implemented on RC car and I've also in the same project but with different ideas so can you tell me where I can get those frame and wishbone etc.,in india. That would be helpful for me and my project

Hi! Do you know where I can acess the CAD documents?

Failure is not an option. It's a guarantee on the way to success.

Como estas, por que no tratas de hacer lo contrario y crear un turbo expansor que funciones con aire comprimido para generar energia

I have the Hakko FX-888D soldering station, too. I love this kit so much. I use it for all my electronics needs. I've owned it for at least 7 years.

Take a page from the Chaparral 2J suction cars. Add a suction fan to get your downforce and use the exhaust for additional thrust. Then you can clean up your profiles even more.

Lost pla casting using zamax. I think you'd be surprised at just how easy 3d metal prints are with rubber coated screws this would be an interesting project

Still this a really cool demonstration to show kids how these compressor work. I think this is awesome. I know the ones used in industrial look like they have a rubber coating on them. Maybe try to spray flex seal on them and see how it does

That pavement looked like the moon’s surface, it was quite rough.

I didn't watch the full video, but did you try putting a small horizontal tail on the rear wheel to keep it pressed to the ground?

What is the vehicule’s model ?

Cool video. I like the detailed analysis of your design process. Good luck with the next version(s).

I am looking at your rear steering mechanism, and thinking you can do away with the external servo horn entirely if you allow the pivot to be in line with the servo output. In your speed runs, the steering position will always be straight or near straight while under way, so you could save some weight and aero drag by doing this. I also suspect that above 60mph or so that most of your steering authority comes from the aero rather than any wheels that you would be using for the rear.

F1 Transmission V4 v35.zip in your github was it supposed to be the same as the test prints?

With all due respect and from my ignorance, allow me to suggest a wheel that cushions this ua-cam.com/video/J0sS3Z3BkJU/v-deo.html And because there are three wheels, I suggest you watch this video of German record-hunting cars. I love the minute autounion 3:00 ua-cam.com/video/_I_8VsH01rk/v-deo.html and es.wikipedia.org/wiki/Autom%C3%B3viles_de_carreras_Auto_Union#/media/Archivo:Auto-Union_Typ_C_Stromlinie_front-right_Audi_Forum_Ingolstadt.jpg

At a certain speed with this design would it make sense for the rear assembly to be a semi-lifting shape the causes the rear wheel to no longer contact the ground and steer entirely via aerodynamics? The goal being to reduce steering instability introduced by ground irregularities.

As a complete layman, I have one suggestion: why not have the tail rudder pivot on the axle line, and the forward part of the pivoting rudder will also end up offsetting the wind forces the servo needs to overcome.

Beautiful work man. Much appreciation from a dude who is losing his way in a similar project. I just have a small question to ask. Looking at your self-built electromagnetic actuator, I wonder if you have ever considered a push-pull solenoid? I have tested them and they operates kinda okay.

Out of curiosity how much down force in Kg or lbs does the Hyper car create at different speeds, say at 10mph increments?

Hey! I always love seeing your videos pop up in my feed, they're always top notch! Suggestion: Have you considered "gearing" the tail-fin? Instead of using a lever arm connected to the servo, having some kind of "rack & pinion"-esque thing, which could either be integrated into the rotating section of the fin, or some kind of reduction-gear stack (xtra weight too)? Unless the servo linkage doesn't really cause any aerodynamic issues... just something I thought about. Great video as always!

"ground effect'... Utilize afan...turbine...to suck down the vehicle.... Mind the rotational forces ennacted on the moving vehicle... There'll be tendencies to pull the vehicle to 1 side. Possible solution is to have two opposed rotating element's... Now you are talking down force and drag... Get rid of that! "air foils"? Ditch them... When you have that ducted turbine/fan/ or fans...with a skirt surround the edge...think that weird plastic at ice rinks...low friction...and a simple mechanism literally using a lever.. Maybe a spring...better, 3d print a price where using material's width and different mass in specific sections to provide that spring force but no other parts are required to be added...what is the word for such parts? Designs? Compliant parts? So, when the vehicle starts to lift... Pressure is removed causing the mechanism to lower that bottom skirt...and raising it as the car squats. Trust me...ditch the wings and 'traditional' aero ideologies.... You'll have incredible results with a turbine...just don't forget that rotational force which will pull it to 1side.

my dad and i have built a few rear steer trikes, our biggest issue was getting the back wheel not to hop when turning at speed. all of them hopped the last one hopped the least but at full speed it always hopped with any steering input.

Go look at the Carbinite LSR program. I think that shape will be much better and you won't have the rear steer issues. The full scale version was involved in bad crash caused by a rear tire failure, but the testing runs showed massive promise.

Go watch this interview with Andy Green regarding the Thrust SSC program and the struggles he had with the rear steer system. It was border line undriveable. I'm not sure you can make it work for a fast RC car, especially since there is no driver feedback to feel what the car is trying to do. ua-cam.com/video/Flm95WwYLgk/v-deo.htmlsi=xlUn7W7My1-5GvdD

Could you rotate the steering pivot axis to lessen the mechanical trail? There would be some jacking effect, but I'm curious.

Interesting stuff, I am starting out on my first stream liner, mine will be less technical design and more test and see 😂

I wonder if extending the tail fin forward of the pivot point might improve the steering at high speeds. Moving the CP forward of the pivot would cause the airflow to help turn the wheel in to the turn when the car starts to go sideways. Maybe moving the pivot point over to the wheel axel would help also. What would happen if you added down force to rhe rear wheel?

Hi Afxentis now has a record of 183mph on 4s

RC cars have suspension too !?

6 minute's in. I was looking at your three wheeled design. In my opinion, the car, looking like that, or typical land soeed designs, should want to weathervane. So, it should want to do that with the designs appearance, however any steering input whatsoever would do the opposite of what a vane would want to do. My point is, the fin should move in the opposite direction to the rear wheels steering angle to counteract the wheel. Maybe it shouldn't even move.

This design is so cool! You should add down-force on the rear wheel as well. It really is interesting to think about how much acceleration is required for this record.

Run it on a straight tether line ..

Nice project . For a fast servo actuated ....thing, you should takeinspiration from the Dynamic soaring speed machines. (548mph). In particular the servo arrangment to avoid flutter. ua-cam.com/video/nv7-YM4wno8/v-deo.htmlsi=bsb_DIs-UFA0gtiD&t=1555

The big issue the ROSSA land speed boys have been facing are the tyres. Not so much with the areo.

Do the rules prohibit any sort of rocket power? Because you got a very short track, have you thought about active cooling? I'm thinking a CO2 cartridge in the nose blowing past all the components and out the back.

Active aerodynamics. It's not a car, it's just a wheel powered aircraft that doesn't take off. ArduPilot is your friend. Edit: I should have waited more than 10 seconds to make a comment. 😶

Okay, hear me out put the steering servo behind the steering wheel, and the servo shroud should be a tall vertical stabilizer, above the airstream of the body; putting this weight behind the wheel would give you the proper weight distribution as well as allow far better geometry for the servo. I think the vertical stabilizer is kind of a must have.

Have you ever tried to install air brakes

Weight at the front and aerodynamic drag at the back. Like a dart. Will want to go straight. You could incorporate gyro stability aerodynamic surfaces.

you could go to a 400m track for runners and test laps there. i do this and its pretty amazing because those tracks are all over the World and you can compare times,

Could making the leading and trailing edges of the wheel hubs round help reducing drag? If you need to move the center of gravity backwards, maybe use beefier steering motor, or motors, maybe even strong enough to move the mechanism into it, maybe using two servos get get the force you need if one servo that's strong enough by itself is too wide? Could tilting the steering pivot angle help with stability?