I love these videos. Thanks for the translation! Also, you should make a real wide Mini-4WD with tires shifted 90° that ride the walls (like big rollers) instead of the bottom of the track, + that propeller for ground effect.
Cool concept and thanks for the translation! You could keep the central motor positioning if you put teeth on both sides of the front crown gear. And I think the flipping on the apex might be made worse by the tilting roller, only one touches the wall through a corner so it produces a rolling torque instead of a pure downwards force.
they should watch the f1 video back when one team made a car similar to this, had a fan, was much faster, they ditched the idea to avoid penalties within a race.
Pretty awesome work. If you swap the PH2 connector on the battery for an XT30 you'll get significantly better performance from the battery. I'm coming from the FPV world and we've documented this thoroughly. Not sure how effective it would be here but if you have any battery limitations at all it would help.
What an interesting engineering challenge! I never saw this before, is there a website about it? (Ah, never mind, I found that they’re called Mini 4WD :-) I have a suggestion about maximizing downforce: The propeller makes a lower pressure area under the car than above it. Force is pressure difference x area. If you made an extended plate covering the whole bottom of the car, the same difference in air pressure would result in more downforce. - Of course, this would only work when the car is on the track; once it loses contact with the ground, it’s not the pressure difference that matters, only the thrust generated by the propeller. Maybe it would help it stay on the track longer though, before it breaks loose. This was so interesting, and a very clever design(!) I want to learn more about this contest! 👍😁
I suggest you to make a gear ring around the propeller that needs low RPM and high torque. On that way you can mount the propeller running motor horizontally and improve your aerodynamics. For gear ring you can use a zip tie.
Hi! One more tip : since the track only curves in one direction (to the right), it would make sense to mount the propeller asymmetrical as far as possible to the inside. Also you should first test the actual downforce it generates with a scale, in order to get significant benefits, it should be at least half the weight of the whole car, probably more. The shape of the rest of the undercarriage will also influence the downforce a lot
Nice idea with the movable unit, if I may suggest, try to make the duct out of TPU, and try to get a 3 bladed propeller that's a bit larger than the duct and cut it down so it has a bull-nose shape and fit inside the duct very tightly, then break-in the duct with the propeller running inside so that the gap is very close and the downforce increases
And the bottom skirt needs a lip that goes all the way around its perimeter with close to 1mm of clearance from the track surface. The more consistent it can be kept near the track, that car can stay "glued".
This is kinda a old Concept, Started in 1970, The car might give you memories, The Chaparral 2J. But yeah, I wish people would actually use it more often because it’s really cool
since you are racing clockwise you should move the driving motor and battery to the inside of the turn, your propeller frame seems to already have positions for such a mounting provision. in addition, adding skirting around the bottom and ducting to direct the propeller thrust should increase effectiveness much like Jim Hall's "Chaparral 2J"
I see you're going to make a vacuum effect just like Brabham's F1 BT46B car. So i recommend you to watch the car including every details, like insulated floor to create vacuum. Cool ideas though!
Maybe try a gyroscope Duct the propeller or try a different one Add brushes to the side of the bottom to increase vacuum It looks looks like a fun hobby have fun. Good luck from England.... 🇬🇧
In Australia we call those fish "Flatheads". Battered and Deep Fried Flathead fillets are a popular choice at traditional Australian Restaurants a.k.a The Pub
Use a black propeller, and rotate the suction motor the other direction. I believe you are experiencing the first effects of gyroscopic procession when coming over the cross over. Which is why it is tilting upwards and outward.
Love your approach towards aerodynamics! Is it not possible to to drive the propeller from the same motor, using gears - then you you could take away the propeller motor? I think that your propeller intake is to large - what if you made it into a duct, so that you would create more suction? Anyways - LOVE YOUR WORK!!!!
It is possible to run everything with 1 motor but that’s gonna lower the over all rpm and end up having lower top speed. Since these are running almost at the top speed the entire time, it may effect the time more than air resistance on the propeller motor. We don’t know for sure tho, there are various motors and some of them are tuned for power instead of rpm, so that might help?
When I get videos like this in my recommendations - I always wish I could understand Japanese. I can read the subtitles but it’s not the same. However - awesome project !! 👍🏻💪🏻
Super cool but a fan redesign is needed. You'll want a fan design that is optimized for generating high static pressure, this means more blade surface area and less space between the blades. It may need a bigger motor as well.
i love your vids ....i wish we had the hobbie in the usa ...i come across cars rarely and we all thought thay were bad rc cars till i found your channel and have a hole new hobbie we had to import track tho
