Building a Backyard Launch Roller Coaster

This has been a massive project which I have been working on the last few months. A rollercoaster in my backyard, powered by a 90mm air ram developing over 1200 pounds of thrust. Check out Part 2 to see how it works!
Credit to CoasterBot for the park footage.

[@lordanthrax8685]

*I don't know why so little people watch you!!! This should have like million views*

[@heckinconcernedkitten61]

Same

[@heckinconcernedkitten61]

He’s so *good*

[@hellofiend6983]

because of how the algortithm works

[@thesfsguy6248]

@@hellofiend6983 yeah like nowadays people watch overrated youtubers like lankybox

[@Garbrel80]

That piston design is brilliant. Backyard rollercoasters will soon be usurping swimming pools, trampolines and jungle gyms as the new norm in home recreation.

[@ThemeParkGlobal]

I thought I was the only UK KZbinr building a Backyard coaster until I watched Will's video, your coaster looks great, I love that it's launched as well!

[@jacobkaltz1958]

This is really impressive to make of all the coaster out of a posted stamp size backyard

[@lightningbug6234]

Wow, surprised that you only have 9k subs :)

[@callum3651]

I love seeing brilliant quality videos on such small channels. You'll go far for sure

[@jdeekofficial5774]

Can you make a dedicated video to just the launching mechanism

[@ethant8368]

Also would love to see this

[@Freizeitflugsphaere]

Haha love it! Ya need to extend this😅😂🤘🏼💪🏼👌🏼

[@stevekarenmatlagahomeforwa8342]

If you had the budget, EMT pipe would be killer for the rails! Would require pipe bending, but would hold up much better. Also, for safety, I'd also add bigger bottom casters. Rubber bumper at the end also instead of block of wood, as well as use of something over the piping on the last 6' to add friction to the rollers if this thing goes to far up!

[@coasterpro2173]

Wow this is just brilliant! What an inventive way to make a backyard coaster! How much was the cost of all of this?

[@WillFromLondon]

Coaster Pro Thanks! It cost around £250 ($300), but I already had some components like the air compressor.

[@ajtopia]

Will From London But how much does the air compressor cost? Can you do a total in depth video because I gonna build a clone of this and want the measurements!

[@Zyghqwyv]

AJ of Yes I got one on amazon that goes up to 90psi for $30

[@ajtopia]

Mason Chang cool cool

[@ajtopia]

Can you do a video on just the piston?

[@jakemakes]

This is freaking great. I totally need to do this

[@ThemeParkJoseph]

You are awesome on making coasters 🔥

[@mariaraquelthomas]

Could you please reply with a list of all the materials you used to make the launch piece?

[@nickw8066]

I had a sigh of relief when you finally pulled out the impact driver. Driving screws with a drill is painful to watch.

[@WillFromLondon]

It was on charge when we started! I felt your pain too.

[@PaulGreggBYRC]

@@WillFromLondon Impact drivers are great, but you should understand that an impact driver puts more stress on the screw. About one out of 20 screws I drive with an impact drill actually breaks either on installation, or later due to fatigue. A regular drill put less stress on the screw.

[@danielmkubacki]

This is very cool!

[@amtorraziert]

Why is every roller coaster building youtuber called Will

[@WillFromLondon]

Jan Demetrio it’s a conspiracy

[@nareshacaitanya675]

Super Underrated youtuber

[@lez7875]

greetings. it's safe??? caution. Success with the project.

[@user-ry5fo5nr4d]

Awesome 😮

[@janleutner11]

Here before it blows up!

[@ChrisHerron-mp7ix]

very nice dude

[@luswagamasasi605]

Hi I love your project

[@sketchgarage6896]

No, 1) it is called a launch coaster 2) the drum method is almost completely defunct, it is usually a hydraulic or a magnetic launch

[@Alex-wn5rc]

Technically a hydraulic launch uses a drum connected to hydraulic motors.

[@sketchgarage6896]

@@Alex-wn5rc yeah, but most hydraulic launches use a series of hydraulics to launch, instead of powering a drum, but even these are rare, as electromagnetic launchers are far more reliable

[@Alex-wn5rc]

@@sketchgarage6896 Heres a link: kzbin.info/www/bejne/ipuoZYaBpbNrr5Y

[@Alex-wn5rc]

@@sketchgarage6896 Hydraulic launchers work by forcing fluid between two gears which in turn spins a drum that pulls a catch car down the launch

[@sketchgarage6896]

@@Alex-wn5rc oh, okay, my bad

[@Bushcampdadfan92]

Wow!!!

[@luswagamasasi605]

Can you share some data what components you used to design the pneumatic shaft.

[@vaati5245]

They actually work with a cable that pulls the car through the launch track

[@Makss70cc]

Briliant

[@user-be3by3em6c]

Try using linear induction motors for the launch.

[@bayorame6967]

I’m currently starting the construction of a launch coaster! :) Just a quick question, how did you connect the fittings and the hose to the tank and the piston? Many thanks and hope you and your family are well 👍🏼

[@midnight_xboxvr]

where did u get everything and how does it work

[@AirtimeAxolotl]

Did you finish it

[@theawesomer]

Awesome build. Sharing on The Awesomer.

[@Emersonac]

Stop.stealing videos.

[@theawesomer]

Emersonac we don’t steal videos. We embed them and link to them, so the original creator gets all the traffic and KZbin revenue.

[@Emersonac]

@@theawesomer ah kk

[@nikora2626]

At least ask first!

[@camallo-uu8ge]

He is like another Dave hax

[@Samtreee]

Imagine being his neighbour, they must think Phineas and Ferb live next door.

[@preppy.xeliana6255]

I like it

[@brayden5880]

They can actually use more than a cable those kind with a cable is a hydraulic launch but there is also a air launch,LSM,LIM luanch

[@njahorror2154]

Also where did you connect the air tube to on the piston

[@PaulGreggBYRC]

It looks like you used dense foam washers to seal the air at the piston. What would you think of a round seal flap, made of thin plastic sheet, attached to the piston, like a section of a very shallow angled cone, pointed aft so the pressure drives the flappy seal against the inner wall of the cylinder, without causing too much friction? I'll try to make a drawing.

[@WillFromLondon]

I ended up swapping out the foam for a leather cup, like a bicycle pump. It sealed very well but needed a small relief valve behind the piston in order to allow it to slide back without building up pressure.

[@LSM_Lover]

I really want to see how you connected the two pvc, and the pneumatic system! Do you happen to recall the set up?

[@njahorror2154]

What are you using to power it? Just a regular air compressor? I want to build something like this but with a different rack layout.

[@doirlyneedauser150]

its also called a compressed air launch

[@paullong10]

Cool

[@projecttikc3106]

Hey, quick question. How did you bend the track, was it just from the force of the wood, or did you mold it? Thanks.

[@midnight_xboxvr]

I am starting construction this Friday and i have a question, what is on the back of the PVC piston and the back of the PVC tank?

[@LSM_Lover]

Do you know what size valve you used?

[@calrustad3724]

For the track did you just use regular PVC pipe? What size did you use and also how did you bend it. Some people have used ABS pipe. Do you think that would be better for a launch coaster like yours? I have built the piston but I am ready to get started on the track.

[@WillFromLondon]

callan R I just used 40mm 10Bar (1.5” Sch40) for the track, and made 5 metre (16’) sections. I didn’t do anything to bend the track, the PVC is flexible enough to just form into the shape you need as long as you aren’t doing tight bends. Then a wooden spine made from 1x2s was added to strengthen the whole thing up. Send me a link when your builds done! I’d love to see it.

[@HayFatwithSurf]

Is there actually airtime on that hill?

[@jjamesreyy]

cool

[@DomWPC]

Awesome coaster, but you should've credited Coaster Bot for the footage at the start of the video!

[@WillFromLondon]

Dom wpc damn you’re right, I totally forgot that. I’ll add it into the description now!

[@Wuduce]

how did you bend the pvc?

[@garyleegomez1096]

Very cool, sir. Question: could a steam-powered catapult ( like ones used on older aircraft carriers) work? I rode Montezuma's Revenge (no longer there) @ Knott's Berry Farm in the 70's. My inner-child is curious.

[@Terrarian.0]

Montezuma’s revenge is still there!

[@stupidsmokey6632]

what are the rails made out of?

[@calrustad5746]

Did you use such. 40 pvc pipe? Because I am trying to build but it is very hard to bend...

[@watermelon_shark6864]

Use heater gun then bend 8t thsn use cold water

[@coltonsupergame]

You coul’ve used a system similar to Top Thrill Dragster where there is a magnet on the underside of the car, which “connects” to a magnet on the track. He magnet on the track will then launch forward taking the car with it. This would likely be more expensive, but it could travel faster, and the design would be simpler (The train wouldn’t need a bumper for the piston to push).

[@WillFromLondon]

ColtonSuper Game it would be an amazing system that’s for sure, just a little outside of my budget unfortunately. I built this whole thing for around £350 ($400). I know that Will Pemble on YT is trying something like that though, you should check him out!

[@protowave]

Dragster doesn't use magnets for launching; it uses a steel hook called a "launch dog" that drops down from the 3rd car of the train into a shaped groove in the catchcar the brakes are no-contact magnetic, though.

[@hauntedshadowslegacy2826]

The dislikes are from Disney and Six Flags execs who are unhappy about others encroaching on their turf.

[@zekegonz6436]

what would happen if the air cannon had half the pressure, half the volume, and the person riding it weighed half as much?

[@Evan.]

You could half the volume or the pressure if you have half the weight, if you half both you would only have apx 25% of original.

[@bigdaddyt8999]

you should have used magnets like alot of different launch coasters do

[@WillFromLondon]

Envision 52 LIM would’ve been really difficult to pull off and been pretty expensive. Would’ve been cool though!

[@Jackson-uh9xt]

builds an entire launch coaster: TAKE YOUR 25k VIEWS

[@calrustad3724]

Could you share instructions for the piston valve please?

[@WillFromLondon]

I ended up using an off-the-shelf quick exhaust valve, you can find them on ebay! Just search for "quick exhaust valve" :)

[@calrustad3724]

@@WillFromLondon what size was the valve?

[@tinfoilhatsarethenewblack8788]

Do all London backyards look the same ? Wasn't there a guy from London who established a restaurant in his backyard as a hoax ? Looked pretty similar .... r you guys neighbors ?

[@mycutecalico8699]

Who is this guy? General hux...

[@Thriller8900]

I was your 100th comment 😂

[@theofficialchris5689]

What type and size of pvc was used for the piston?

[@WillFromLondon]

Sorry, I misread this! The piston was 4” Sch40 US or 100mm 10Bar UK.

[@l2m773]

80 views WHYY :(

[@Silacide]

Patience is gold, he has 1.1k (well deserved) views 😄

[@Luddethecoolibo]

2:05 Get some torx screws