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Gravity Racers by Valkrie9
Started on: 01-12-2023 12:38 AM
Replies: 14 (475 views)
Last post by: Valkrie9 on 05-25-2025 07:43 AM
Valkrie9
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Report this Post01-12-2023 12:38 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post

Carrera Coches Alausí 2022 Careening down the side of a volcano !

How would your team compete for the podium ?
What technology would be sufficient to reach the podium ?
Careful you don't leave the track's surface, it is a long way down to the river.

[This message has been edited by Valkrie9 (edited 01-12-2023).]

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Valkrie9
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Report this Post01-12-2023 12:44 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post

Thrills, spills and puppy dogs !

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Patrick
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Report this Post01-12-2023 04:05 AM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post

In the 1st video, I found myself continually leaning into the corners. lol

In the 2nd video, I found myself continually expecting the guy to end up in the front grill of an oncoming truck.The guy's definitely got skills, and balls... but man oh man, he's pushing his luck!
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Valkrie9
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Report this Post01-12-2023 05:28 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post

Cesar Zumba Videos
Looking closely, intently, focusing on the steering inputs, you can derive some facts about the kart's front axle geometry.
Far too much caster, toe, king-pin inclination.
Perhaps the brakes are dragging, or it's 40kg too heavy.
Maybe the rear axle is bent from a jump, and is toeing in.
Way too much drag.

Podium.
:CheckeredFlag:

[This message has been edited by Valkrie9 (edited 02-25-2023).]

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Valkrie9
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Report this Post01-12-2023 06:34 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post

Valkrie9

1940 posts
Member since Jan 2021
Hood Ornament.
Emphasis on the ' ment '.
' Isuzu Diesel Truck '

...
Flying down a Colombian mountain road on quality snow, becoming one with the longboard.
Until that fateful day, when mortal reality, the probability of error, random causality triggering catastrophic cascade.
Until that time comes, he will live quickly.
' We didn't expect the scooter to pull out like that ! '

..
Trucks

[This message has been edited by Valkrie9 (edited 01-14-2023).]

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Valkrie9
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Report this Post01-12-2023 08:12 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post

Valkrie9

1940 posts
Member since Jan 2021

Time: 1:10
Like driving with the brakes applied, but it's just incorrect front axle geometry.


Time: 6:20
Those guys are out of sight.
The other thing, Ackerman tie-rod angle.

...
Pujili 2022
Pujili 2022 Another View
Pujili 2019 four corners..
CUENCA 2021 Podium, Cash, Trophies, Interviews !
PIFO 2020 Golly ! Looks to be as much excitement as Pod Racers.


...

Nuvolari returns to Palermo in the screaming Alfa-Romeo.
Tazio Nuvolari 1931


The steering geometry factors are incorrect, generating frictional drag.

-0.5° Camber max
+1.5° Caster max
<-1° Kingpin Inclination
< +0.5° Toe-In
< 0.5", 14mm Scrub Radius
Redesign the Ackerman angles to correct gross toe changes.
Reduction of rolling resistance, maximize air pressure.
Use light oil in place of axle grease.
Reduce preload on bearings to minimum.
Minimize bearing diameter to practical limit.
Allow front axle to rotate about longitudinal axis of kart, rear axle centerline.
Reduce weight to minimum.
Make a smoother hole in the air, don't be hanging parachutes out into the wind.
Install wheel and fuselage aero devices.
Hmmn...

... this is exciting, Volcano Racing, very dangerous, risky, inches from catastrophe.
Those roadside culverts are particularly ominous, at any speed, on any wheeled vehicle.
Twisting Down the Volcano - Pujili 2022

..
Eventually, aerodynamic aids will result in higher trap speeds.
Want to see some drone footage, zoomed in up close, over a high ravine, in the clouds.
This is a potential blockbusting video waiting to be made, queue the AC-DC . The way to the top is up the racetrack.
140 kph on the long straights.

...
Volcano Racers Flywheel KERS. Bicycle chain driven through on-board step-up gearset, like a siren.
An automotive flywheel roughly ~20 kg, machined and repurposed to deliver and regain kinetic energy while travelling down a mountain racecourse in Ecuador, climbing hills even.
Say, 10K rpm, wound up to speed at the race start, propelling ~ 300 kg pilot, co-pilot and racer to quick starts, chain driven karts, auto transmission one-way roller clutches.


Yep, that would work real good.
The flywheel spent at the end of the race.

All that rocking and rolling on the karts going to a better purpose, spinning up that, those, flywheels.
Sure, the wooden handles fit into a rack and pinion to drive the input shaft of the gearbox, climbing grades.
That long course that runs across the bridge at the Rio Pastaza ravine, after that long straight run, then the 2k push up the hill.
/maps/place/Banos,+Ecuador/@-1.4052615,-78.4743226
Carrera de coches Baños
A foot paddle operated mechanism to speed up the FW, delivering torque when needed.
Hydraulics..
Hmmmn.

: Edison ! :
...

Volcano Racers.
The Brotherhood of Extra Ordinary Gentlemen.

' Can we build them out of wood ? '

...
Ecuador Volcanoes
Parque Nacional Cajas
Now, that would be an epic race, downhill from the summit.

...

How they are built, for those brave and adventurous spirits bound for Ecuador, with the ambition to race on the Volcano Circuit.
Could be fun, be careful tho, it is very dangerous, mortally dangerous.
A bucket list addendum.

' Sure, I'll build the racer in California, then load the trailer and haul it to Ecuador to compete on the ' La Muerte ' course. '
The Darien Gap, where the road stops.
' Then I'll ship the trailer, racer and van to Esmeraldas or Guayaquil, then drive to the course, yeah, a Pacific steamer to Ecuador. '
' Fly there with the racer, support equipment, and team, then rent a box truck to haul the racer to Las Mercedes. '
Yeah, an adventure.
Something out of the ordinary, not the same old tourist traps and gift shops.


' Negative 'Kingpin' '

[This message has been edited by Valkrie9 (edited 08-15-2023).]

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Valkrie9
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Report this Post08-13-2023 06:22 PM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post


' @hippo4g93
Everyone always needs a friend to make bad decisions with. '

This is exciting !
' Muy peligroso '

' How do we make the kart... faster ? '
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Report this Post08-13-2023 08:13 PM Click Here to See the Profile for MidEngineManiacSend a Private Message to MidEngineManiacEdit/Delete MessageReply w/QuoteDirect Link to This Post
Where is the video of them spending 12 hours pulling those back up the mountain ?
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Report this Post08-14-2023 12:05 AM Click Here to See the Profile for cvxjetSend a Private Message to cvxjetEdit/Delete MessageReply w/QuoteDirect Link to This Post
In that second video...How does he avoid hitting a pebble-( the board stops and you go for tumble)

And....if you want to see some good skateboarding in a movie, try watching "The Secret Life of Walter Mitty" which came out back in 2013...It sort of bombed- the critics all hated it (No drug abuse or rapes and murders)...My GF dragged me to it...was a bit slow until the Walter Mitty has to get on a helo with a drunk pilot- then it grabbed me and would not let go.

Main star is Ben Stiller- never really liked him until I saw this movie....His facial expression when he gets on the Helo- a mixture of exhilaration and terror- just blew me away. He also directed the movie. I personally think it will be considered a great movie in the future (I have an extra DVD copy so I can lend it out- so far approx' 20 times- everyone comes back and states "I never heard of this movie- it was really good!")
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Valkrie9
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Report this Post08-14-2023 12:15 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post



The Ecuadoran Volcano Racers are taking far greater risk, very little safety measures.
Spectacular vistas atop equatorial mountains, wheel to wheel racing.
I want to see a drone view of the races, roadside cameras, champagne celebrations, hotties in shorty shorts.
Yeah, like that.


...
Yeah, I enjoyed the Ben Stiller movie too, the plot a ' High Expectations ' theme, becoming an adventurer.
The Iceland scenes made it for me.

[This message has been edited by Valkrie9 (edited 08-14-2023).]

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Valkrie9
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Report this Post05-15-2025 07:21 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post
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Report this Post05-20-2025 06:05 AM Click Here to See the Profile for maryjaneSend a Private Message to maryjaneEdit/Delete MessageReply w/QuoteDirect Link to This Post
I once had a watermelon that could go downhill like that.

[This message has been edited by maryjane (edited 05-20-2025).]

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Valkrie9
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Report this Post05-22-2025 01:10 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post

So, here's the plan.. build a Volcano racer, ship it to Equador, start from the back of the grid, win the race, get a kiss from the cheerleader.
' Kisses ? I want to squeeze some peaches ! '
' I'll buy a big house, where we both could live ' ~ Elton John '71
Your Song

Leidy Alvarez
Leidy Álvarez posing in fashions

Pallatanga '25

[This message has been edited by Valkrie9 (edited 05-23-2025).]

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Report this Post05-23-2025 12:50 PM Click Here to See the Profile for cliffwSend a Private Message to cliffwEdit/Delete MessageReply w/QuoteDirect Link to This Post
I had, until now, never heard the term Gravity Racers. What I knew about the sport was called the Soap Box Derby
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Valkrie9
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Report this Post05-25-2025 07:43 AM Click Here to See the Profile for Valkrie9Send a Private Message to Valkrie9Edit/Delete MessageReply w/QuoteDirect Link to This Post
^
Nah-ah !
Those are Volcano Racers, a soap box wouldn't make it off the mountain, bust on the first turn.
2025 Race season begins !
Want to see more Cheerleaders, cheering !
Cheerleaders at the finish line ? Making Soapbox Derbies more exciting !
Cheerleader Cheering at the Derby !
Cheerleaders, come get your cheerleaders here ! ~ Racer's incentive, prizes, like.
Cheerleader in uniform !
Carrera Coches Pujilí 2025 ! - Llanta Inflada
LeidyAlvarezCorral
@LeidyAlvarezCorral-fs6pw

[This message has been edited by Valkrie9 (edited 05-27-2025).]

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