Remember Slot Cars ? What would be the TOP, top Speed ?

[St. Phatty]

Remember Slot Cars ? What would be the TOP, top Speed ?

Actually that how I first got introduced to motors, soldering atec. at about age 12.

I remember one of the Pro's at the track in Denver ... there was actually Professional slot car racing back in the 1970's !


He was running a car without a body, just a piece of metal going about 60 miles per hour.

It lost its grip on the steepest part of the fastest curve and face-planted in the cheek of a woman spectator.

Face cheek, not butt cheek.


What would be the top speed of something like that if you had a near infinite budget ?

I think you would run into the same physics that limits the speed of cars setting speed records at the Bonneville flats.

1000 miles per hour.


But if you were determined to do faster ... just eliminate (most of) the Air from the track.

Or put the track at the top of Mount Everest.

2000 to 5000 miles per hour.


Escape velocity is 11 kilometers per second, 25,000 miles per hour.

I don't think you could use a slot car mechanism with a normal electric motor to do that.

But you might be able to use the slot part of the the design, a slot with 2 conductors next to it,
to deliver power to the armature of a motor.


It would end up being a lot like a rail gun.

And you would need permission from the Pakistan or Chinese governments to build a slot car track on their highest mountain.


Cookies ... what I've been smoking.
Chem ... what I'm about to smoke.

Plus I'm eating a banana.

WAKE AND BAKE folks !

 

[armedoldhippy]

i'm thinking about the SIZE of the salt flats RE speeds attainable. i guess you could design something rocket powered that could hit 1000 mph real damn quick, but run out of fuel before you ran out of salt flats. still gotta stop though. hmmmm a bullet leaving a rifle barrel at 2500 fps is going 1705 mph... so carry the ought, drop the naught... (channeling my inner Jethro math whiz) i don't think anything moving that fast is gonna stay on the ground, lol.

 

[Amynamous]

It’s still a thing. lol

https://youtu.be/cV1xSLrkAGA

https://www.guinnessworldrecords.com/world-records/fastest-slot-car

It’d be interesting to see what Elon Musk could come up with.

 

[St. Phatty]

https://www.koford.com/slot/2021.pdf

Their Catalog needs pictures !

 

[buzzmobile]

Tether cars are another option.

How fast do tether cars go?


The world record for the top tether car speed is 214 miles per hour (344.4 kilometers per hour), well above the top speed of most model cars and perhaps more impressively, well above the top speed of most full-size cars [source: AMRCA]. Tether car racing is so named because each car races while tethered to a pole.

 

[f-e]

At 60mph aero is a big player. It's why lorries do 55, where rolling resistance is the bigger issue.
Today's advances in aero are making cars look a lot different. Motor tech is also moving along.
The longest track was built by james may of top gear fame. 3 miles along the brooklands track route.
He also did a long toy train track. With many hand-overs due to voltage drop along the way. 10 miles that was.
IIRC it's James May's Toy Stories
Did he put an action man into space? I think that one blew up..

 

[St. Phatty]

At 60mph aero is a big player. It's why lorries do 55, where rolling resistance is the bigger issue.
Today's advances in aero are making cars look a lot different. Motor tech is also moving along.
The longest track was built by james may of top gear fame. 3 miles along the brooklands track route.
He also did a long toy train track. With many hand-overs due to voltage drop along the way. 10 miles that was.
IIRC it's James May's Toy Stories
Did he put an action man into space? I think that one blew up..

If you want to go fast, you have to eliminate friction.

Which is easier in a Vacuum.


But overall I'm very OK with 45 miles per hour.

I think it would be cool to have an airplane that goes 45 miles per hour.

 

[f-e]

Do you secretly want a zeppelin. Great on fuel, but parking's difficult. It's a flying island bar, surrounded by booth's with a view. Get a coffee shop license and that could be a tourist attraction.

 

[St. Phatty]

Do you secretly want a zeppelin. Great on fuel, but parking's difficult. It's a flying island bar, surrounded by booth's with a view. Get a coffee shop license and that could be a tourist attraction.

Maybe a Tattoo that says, "I got your Zeppelin right here !"


Actual slot cars, their top speed is limited because they don't have a Transmission.

 

[f-e]

The DC motors used, tend to have two permanent magnet poles, and a spinning armature connected through a commutator that ensures the motor keeps moving forward. Full speed is probably limited by the winding resistance/inductance. There is only so fast a magnetic field can be created. Limited by how quick the current can build. Often against the current coming from the windings own power generation as it passes the magnets. Or remnants of the last charge. You can improve on the design but ultimately we should look at electronically commuted motors

I just happened across a 70mm RC fan with 2.7kg of thrust. EC motor, so higher RPM's are possible.
What does a model plane fly at? I reckon a model of Thrust 2 would trap

 

[armedoldhippy]

I think it would be cool to have an airplane that goes 45 miles per hour.

an old boy that flies over Douglas Lake mudflats most winters has an ultralight that probably doesn't go that fast, lol. whole damn thing looks like it is covered in saran wrap ...you can hear him coming for about ten minutes before he finally crawls into view down near Dandridge, lol.