Wood fired turbo barrel MAXIMUM boost test

[@haltech]

Pretty sure *you* broke the turbo. :p

[@kyro0996]

Upgrade to a train turbo

[@Loudkona]

​@@kyro0996 it would take a year to spool but I like the idea of a lot of boost 😊

[@Edward135i]

Do yo think Scottie could Tune it for them?

[@picax8398]

@@Loudkona it might actually make enough thrust to move it lmao

[@xuejiaoxu6778]

​@mudmowergaming5566 maybe a compound set up is in order

[@haywoodf]

Spraying fuel into the turbine exhaust will do the evaporative cooling thing so a bleed igniter for after burner from prior to turbine might be an option. Alternate is just a spark plug igniter placed in your perfectly profiled exhaust thrust nozzle. BTW love your fabulously curated work which targets what really counts AND intrepid safety first approach! Onya Boys!

[@ToastyMozart]

It probably needs to have some kind of bypass air injected too. With all the soot (unburned wood) coming out of that thing it seems safe to say the exhaust doesn't have enough oxygen left in it to burn even more fuel.

[@ChoChan776]

​@@ToastyMozartThe oxygen content probably isn't too much of a concern, many afterburning turbojet engines use no bypass air. The main issue would be keeping a flame going at those kinds of exhaust gas velocities. Probably have to come up some kind of flame holder rather than a pinched piece of brake line.

[@tomstech4390]

6 months late but.... route the E-wastegate output to the turbine (pre or post turbine because who cares).

[@scottleggejr]

This sounds like building a bomb or one hell of a cool backfire.

[@MichaelBrown-wx6zq]

@@ToastyMozart could run compounds on the exhaust side and route one of them into the afterburner

[@robcantwell1981]

That was great and I really liked the David Attenborough commentary

[@Camp_Dogs]

We had a lot of fun making this episode. Thanks mate!!

[@mzmatze]

What you need is a cyclone separator between the fuel barrel and the exhaust turbine of the Turbo. So you can separate the chunks of woodfrom the exhaust gases. Otherwise, these chunks go through the turbine as you can see as spontaneusly occuring flashes of smoke in the exhaust gas. This should extend the lifespan of the turbocharger significantly. :)

[@MoronicAcid1]

Water bath filter is simpler, will have cooler exhaust temps, and generate steam pressure.

[@fastinradfordable]

@@MoronicAcid1you’re hired!!!

[@BIGGlep]

It's so neat to think about these because unlike normal jet engines, you are throttling the air instead of throttling the fuel, so it is always running super rich. There probably isn't any oxygen left in the exhaust.

[@scottleggejr]

Yea exactly! On another one of these on a diff youtube channel they had some kind of o2 sensor. Their stoich ended up being calculating to like 30:1 or something crazy, but they all depend on the fuel you're using. Alky vs meth vs gas are all different sensors and stoich.

[@erskatti]

We made turbo furnace with a system to control the fuel (wood fumes). Basically there are to pipes for the fresh air to go: Straight in the exhaust (secondary) or straight to the firewood. The unburnt fuel will burn on the way to the exhaust pipe as there is more air coming from the secondary pipe.

[@lifebehindtheselens]

I've been waiting for this for so fucking long thank fuck that you're released this you guys are amazing -guy from usa

[@dank_productions94]

The ultimate burn barrel progression!

[@MartinBalle7]

I think you need a sort of grid /filter to stop debris from killing the turbo.

[@pauljs75]

They could add a big metal spiral of steel pipe with holes drilled to face the center to route the injected air inwards (the flame front will be on the incoming air mixing into the hot combustible gas), and then have a labyrinth passage before the exit pipe going to the turbo. The burn chamber itself just needs an even swirling flow of gases, but not a lot of velocity. The air-injector/burner also would act as a diffuser. The labyrinth section would slow some movement down to precipitate out the heavy ash, and then the outlet for the turbo is where pressure would get exchanged for velocity to do its thing.

[@fastinradfordable]

@@pauljs75oh yea all ya gotta do is weld up ‘a labyrinth’ 😂😂😂😂

[@pauljs75]

@@fastinradfordable Have two to five plates with holes or slots plasma-cut into them. And make sure the openings don't line up to allow a straight flow path between subsequent plates. The holes would be offset or staggered in some fashion. They would be welded in with a few centimeters gap between them. Technically that's a labyrinth baffle or diffuser, if you were to ask anyone at a chemical plant or involved with distilled water production for steam power. Quite possible to make with welding gear, if you've got the time for it. You're probably thinking of an automotive transmission which has a much more intricate flow path for its labyrinth, but it doesn't need to be anything that complicated. Also the baffle shouldn't be confused with a seal by the same name that uses the same principle of multiple staggered offsets.

[@JoshRoeloffs]

The voice over has me dying

[@pulsorohr]

Hey guys, try to use the wastegate to make a steady bypass of air to the turbine inlet. So you dilute the hot gases with air wich loweres the turbine intakte temperature. Normally in small turbines only 25% of air is used for combustion, the rest is for cooling the burned gases. Best Regards Stefan

[@Lukab99]

try routing the excess air from the egate to the up pipe before the turbine housing to cool the EGTs and give the kero some oxegen. Great videos btw

[@gafrers]

Fantastic. Quite the investment into this version of the turbobarrel

[@Kapil-Patel]

CAMMPP DOGSS !!! 😎 Absolutely fucking beautiful lads, from start to finish. The voice-over is genius and the after burner build was fantastic. I don't suppose you'd try oil cooling the turbo again ? either way excited to see what you come up with next 👍🏽

[@PiDsPagePrototypes]

With the controller operating, this actually becomes a great way to get consistent and predictable behaviour, meaning the barrel can be used to run a forge or kiln, or heating large volumes in emergencies during winter, or rapid inflation of hot air baloons. The flame thrower should all be done in the exhaust, but needs to have an air intake back there that sucks clean air in to burn with the extra fuel, the same way a Jet uses the cold air from the bypass fan to add fuel to in an Afterburner.

[@RedmistAU]

You guys are truly on the cutting edge of cocking about, Well done Dogs

[@Camp_Dogs]

haha i see we have common interests

[@BigKandRtv]

Straight up fantastic. Love the narration.

[@duds3833]

This, this is art

[@Gslice-ok4ck]

Narration makes this video A++

[@paultucker2027]

To help make the turbo last longer build a cyclone (Dyson) style filter to go in the manifold between barrel and turbo. love the commentary 😂

[@Stoney3K]

The reason you're eating turbos is because the turbine inlet temperature is way too hot. The turbine wheel will overheat and distort, as well as the bearings. If you want to save future turbos, the best way is to have a combustion tube that is surrounded by another tube so the combustion gases are mixed with colder bypass air coming from the compressor. For a quick fix you may even be able to use the wastegate for this, with the air coming from the wastegate going into the turbine through a T or Y piece to mix with the gases from the fire, cooling them down.

[@adamfrbs9259]

I love all these burn barrel turbo videos.

[@DBZCNT]

Best video yet

[@HowToTurbo]

Is that you, Dad?

[@jeremyhall964]

I think plumb your e-gate into the exhaust post turbo with a longer exhaust straight bit to contain. Also for longer run time I suggest a secondary pump feeding the intake with used oil, more energy compared to wood and easier to spray pre turbo.

[@usefulemptiness2410]

Nuts. And that's good. Instead of a fuel pump you can feed the fuel with a boost line from the cold side to the to of an airtight fuel tank, where you fed the fuel line from the bottom of the said container. It would be nice to add the air from the waste gate to the beginning of the burner as well. Probably a valve would be good in that case so there is an option to vent it direct to atmosphere as now, or full/partly feed it to the burner. A little different design, and your flame thrower turns into a makeshift afterburner that produces som measurable thrust.

[@usefulemptiness2410]

Drop that thing about the boost line into the fuel tank. To big risk to get an explosive mix of fuel and air. Needs a workaround to be safe enough.

[@andronclock1]

Top level content!!!

[@Rigohm]

I can’t wait to see a compound turbo setup next. which turbo would blow up first? 🤔

[@shannonsisk]

Compound wouldn’t move any more air than the big atmosphere turbo can provide. The goal with compound is response, usually on a diesel. It doesn’t make any more airflow than just a single.

[@jimmykreutz6087]

The Atterborough touch is brilliant

[@chrisprobert6]

quality entertainment right there.. you can keep that up lads. nice one....👍

[@Camp_Dogs]

cheers Chris, plenty more to come!!

[@evil17]

This is a work of art guy’s, gr8 job & vid. I’m no jet engineer, but I believe the internal burn chamber should be modified something like a jet engine, with a cylindrical burn chamber & a small round door on the end to seal it so the air can be blown around the outside of the burn tube & enter the burn chamber through a pattern of air inlet holes as you might find in a jet engine, this would help to cool the outer chamber & introduce the air more evenly. It would be easy to add a bit of Deisel, kero, sump oil at this stage with a smaller amount of wood firing into such a chamber for more control and longer run sessions. 2-3 stainless grill grates or some sort of a conical slotted filter at the exhaust turbo end of the burn chamber might help reduce the amount of ash & wood particulates going through the turbine & help them last a bit longer, but then they are copping a flogging. Love ur work n effort guy’s. Cheers

[@ToastyMozart]

There's probably not much oxygen left in the exhaust stream for the afterburner fuel to burn. Your best bet would probably be to take a page from fighter jets' book and use the bypass air from the valve instead - routing it into the exhaust pipe if you want all the fun stuff coming out of one end. It'd probably benefit from an ignition source like a spark plug too.

[@Camp_Dogs]

When we had the wideband on there the richest we could get it to read was around 27-1… Usually it sits around 35-1 (reading too much air) Hopefully this means there is still plenty of oxygen in the exhaust

[@CoryBoehne]

Dual turbo - one feeding into exhaust, with the fuel line. Afterburner much?

[@TheFoyer13]

@@Camp_Dogs the egt's reported temps high enough to ignite the kerosene though right?

[@kimricsmythe9879]

We made a flame thrower out of a jet engine at SRL and I had to build a sort of flame holder in the exhaust to create a place to get the flame to start. You also as others have mentioned probably have very little ox in the exhaust stream . most jet engines bypass some air past the burners to drop the exhaust temp protect the turbine blades.

[@rudyrodriguez5059]

You need an igniter for the after burner as well as shall angled ports facing in the direction of the exhaust flow in the flame tube to add extra oxygen. Probably

[@jasmenter]

narration rocks guys, keep on spooling ya

[@Camp_Dogs]

Cheers mate!

[@timtrial3971]

I enjoyed this much more than walruses tumbling off cliffs, David.

[@justins21482]

ya know.....i wasnt sure i was going to sub because well its youtube and there is so much out there, you tend to get real particular about the content you prefer but my god...between the david Attenborough (either AI or a someone with a near spot on voice) voice over or the drilling between your toes....and combo that with videos of your starlet.....sold....where do sign on the dotted line lolol you guys have my kind of sense of humor. cheers from michigan!

[@myusername111]

I ABSOLUTELY LOVE THE NARRATION WELK DONE LADS

[@mr.pineapple7620]

I think they need to use a lower A/R exhausted manifold to reduce flow rate because currently they are definitely also over spooling the turbo. With a smaller exhaust side the pressure inside the barrel would increase with lower airspeeds (Wich would kick up less of the solid particles inside) while also facilitating a cleaner burn. A water injection before the turbo would also probably increase turbo drive pressure (more power for the turbine) while also reducing turbine manifold temps. All of this would definitely increase turbo lifespan

[@Camp_Dogs]

Great suggestion we are still playing with it

[@mr.pineapple7620]

@@Camp_Dogs can you measure the CFM of the next one? That would be interesting to see where on the compressor map the turbo is at that point in Time

[@stringyGG]

7:28 the dog didn't think so either hahaha...

[@christopherpollard7244]

Would cooling the air pre exhaust manifold with a methanol be possibility? And then using a spark to ignite fuel inside that there boom tube, strap it to something with wings, and take off mates. 👌

[@MoronicAcid1]

A few ideas: 1. Compressor to high pressure air tank. A valve between the HPA tank and combustion chamber throttles the speed. Compressor doubles as an oil pump sucking oil into the HPA tank. The oil is separated in the HPA tank and fed back to the turbo, since the HPA tank has the highest pressure in the system, there shouldn't be any issue with oil backflow. 2. An open wood feed tube with a nozzle. This nozzle will keep the combustion chamber pressurized with air from the compressor/HPA tank without backflow of air/exhaust despite being otherwise open to the atmosphere. This will also negate any leaks from the gasket on the current wood feed. 3. Water bath filter will filter out debris, cool the exhaust, and generate steam power.

[@Camp_Dogs]

love the ideas! how would a water bath filter work?

[@MoronicAcid1]

@@Camp_Dogs The water bath could be a U-shaped pipe between the combustion chamber and the turbine or a pipe from the combustion chamber into the bottom of a reservoir containing water. As the exhaust passes through the water, any particulates and tars will accumulate in the bath. When the system starts water will be pushed out the combustion side of the U or pipe, and the water in the turbine side or reservoir will rise accordingly. You'll also need to account for evaporation losses or use a float valve in the design.

[@phantomduck3626]

I recommend having double exhaust and intake with 60-80mm turbos on both

[@joseph8852]

So when is a second turbo get added to the mix boys

[@badcookie13]

The dog living his best life, doing real man-science with the boys! 💪

[@projectLSaudiA4]

Didn’t know BBC was sponsoring voiceovers for this channel 😅

[@mathewforsman5824]

It's all the debris coming out of the barrel that's screwing the turbos. You need a way to catch it. I suggest some sort of steel plate that has small holes punched/drilled in it. You also should mount the intake and exhaust tangential to the barrel circumference, to encourage a vortex in the barrel. There's a lot of energy in there being wasted

[@Camp_Dogs]

Great idea we are working on something 😄😄

[@theLyzhendricks]

​@@Camp_Dogs how long tho we want more burn barrels

[@EdBoi18]

I think one thing that could be done would be to have a second barrel fed from the exhaust from the first with water being sprayed into the second barrel to get additional expansion and the second barrel could allow the exhaust flow to slow down a bit before going into the turbo and would be a good way to keep stuff from getting into the turbo. Size the second barrel a bit bigger than the first, feed from one end and mount the turbo to the other end.

[@dezdolla]

Yeah the boys 🔥🔥

[@Fortenurg]

The 1905 patent by Alfred Büchi, a Swiss engineer working at Sulzer is often considered the birth of the turbocharger.

[@andrewcammer2535]

The Atterburo voice overs are priceless!

[@bennyboyy7]

I think some copper gaskets would help, might be wrong but worth a try I think.

[@Exserik]

Submerge the whole thing in a big water tank with just the intake and exhaust above/outside the water tank and you’ll be able to run it for much longer. Also maybe the turbo will survive longer with cooling. Another thing to make the turbo last would be some kind of cyclone before the turbine to get rid of some of the crap in the exhaust from the barrel.

[@H3adcrash]

Bargain-bin David Attenborough is something else! Well done guys!

[@goliathindustries1068]

My suggestions: 1. Use 2x 50mm waste gates to control that amount of displacement. 2. Buy 2x cheapest fattest intercoolers connect in series or parallel if there's too much drag for some hektic sututututus when you shut off throttle 3. Run a dedicated water and oil pump with a reservoir 4. Install t51 r mod so the rest of us in aus can hear it. 5. Given the displacement if available Run a electronic HPFP to 4 injectors welded on bungs equally around diameter far forward as possible held open constant 12v and control flow with manual ball valve for testing before migrating to full custom injection and tps mapping.

[@alwaysthinking614]

badass hell yeah brother

[@waitemc]

Water injector at turbo to cool and steam expansion will result in crazy psi . Exhaust manifold side just before turbo

[@3ch0_17]

You need to make a dual wall pipe which is fed by the compressor that runs along the exhuast feed, hot end and outlet for cooling and a simple afterburner. You could do this by placing a second, smaller sized analog wastegate further down the intake and routing its waste through a pipe that eventually envelopes the exhuast feed, hot side and outlet pipe. Cut some directional tear drop shapes in the outlet pipe and run the cooling/ afterburner shroud about 3 inches past the end of the outlet pipe. This should reduce the overheating and make much larger flames.

[@JSprayaEntertainment]

try flame thrower inserted right before turbine wheel maybe? ??? or add a flame tube

[@NeverLetOff]

This is so awesome!

[@2alawabidingcitzen]

Also you had my sub at the national geographic narrator. 😂😂 golden.

[@Barbaratio]

I wonder if you could inject waste oil and burn waste oil after it's ran on wood.

[@MichelleSleeper]

I'm glad that Nick can minimize - but not totally eliminate - the chance of someone dying #campdogs

[@milspecfpv]

Maybe it's been asked, but why are the wastegates on the cold side? This seems out of the ordinary for controlling boost.

[@Camp_Dogs]

Purely because we don’t want stuff going through the wastegate and damaging it… Can’t do much about the turbos though lol

[@milspecfpv]

@@Camp_Dogs: Ah, that makes sense. I wonder if you could add a strainer of sorts to keep the larger pieces of coals from going through the turbine? I’ve been thinking of building one of these myself, you guys have a pretty refined unit.

[@Luftbubblan]

The narrating speaker sounds gr8 :D

[@lukeonuke]

at this point i wouldnt be suprised if the next episode there is a ramjet at the end of the barrel sidenote, maybe cool the turbo with some kind of oil or water cooling so the poor thing doesnt melt instantly

[@katenrr]

Bad ass video subscribed !!!

[@BruceNJeffAreMyFlies]

Jackie Chan exhaust fan... I like that one!

[@rawhidelamp]

You could try spraying a small amount of water into the turbo to cool the barrel if that helps

[@Camp_Dogs]

cool idea!

[@sebbes333]

*@Camp Dogs* 6:09 IDEA: Add an afterburner of some kind? (you probably know better than me, what to use for that). .... Alternatively, add a fuel injector to spray in gasoline or something to make that fire jet several meters long :D 8:12 Ok?! AWESOME! :D

[@ChiefRickyRC]

Excellent work 👏 how do i get that voice over? 🤣 that was great

[@tippyc2]

Jackie Chan exhaust fan has me rolling

[@Mr.Mister001]

Stainless mesh in the exhaust with diesel spraying onto it. That's how most oil burners work.

[@davidkettlewell5861]

Love your madness I realise this is a bit late, but did you consider making your barrel vertical and putting a grate under the fir? David

[@zachreyhelmberger894]

Nice work!!

[@shannonsisk]

It’s like it blows all the wood debris to the back and pushes it out the turbine. I haven’t had any issue shooting wood out of mine, and it’s a vertical setup. Yours is horizontal. Could be the issue. Sweet boost control!!!

[@EduardoGonzalez-fb3jv]

The turbo never had lubricantion system installed…. How can it last?

[@Camp_Dogs]

It’s getting oil from the car next to it lol. Oil drain goes back to the engine 😆

[@EduardoGonzalez-fb3jv]

@@Camp_Dogs oh ok i see

[@TheLargino]

I hope the Camp Dogs threw the spear grass seeds at each other in true Territorian fashion.

[@Camp_Dogs]

You’re obviously a local 😂

[@TheLargino]

@@Camp_Dogs Not so local anymore. But watching you guys brings back fond memories. Territorian content on YT is even scarcer than the total number of Territorians. Subbing to your channel is the least I can do to make the NT more visible to the world. It also helps that your burn barrel appears to be the most advanced in the world.

[@Camp_Dogs]

@@TheLargino we are pushing hard mate, so many good ideas to bring to life. Cheers for the comment!!

[@dr3ww3rd87]

3 turbo, 2 tanks, half wood pressure vessel/half water. 1 steam turbo 2 wood turbo. one tank down to refill water/reload wood while the other is in use. brushless 3 phase electric on inlet shaft of each for building boost then regenerative braking as generator. could use steam output to tesla steam turbine as well.

[@stickyfingers2413]

Even a simple mesh filter will stop the bigger chunks of wood smashing though the turbo

[@pmprasinos]

Why don’t any of these experiments put the waste gate on the exaust side?

[@Camp_Dogs]

Don’t want wood going through the wastegate and accidentally getting stuck. Still works well. We just spun the turbo too hard

[@travisclarkin4277]

The dog running had me dead😂😂😂

[@carldalsasso8603]

The one issue I see in common with evry design I've seen is the lack of elevated combustion chamber within the main chamber thus keeping the heat further away from the pressurized walls making the system safer and creating better air flow around fuel materials. 🤘 I NOW we must use the exhaust pressure to spin another turbine coupled with a generator. Thus a new wood/trash incinerator / generator is born 💯(yes I posted this on the older video first lol)

[@youritake8618]

I think mayb some of the wood chunks get sucked into the turbine. Some kind of filter would work like a metal sheet with a lot of very tiny holes. It has to be strong enough to withstand the suction power tho

[@Camp_Dogs]

Yeah I think you’re right although one of our previous runs we had it running steady 10 psi for about 10 minutes. Turbo and wheel was fine. The heat is literally melting the wheel, so yea any debris is definitely going to hurt it lol

[@Camp_Dogs]

We just can’t run 30 psi for very long at all…

[@youritake8618]

@@Camp_Dogs mayb running an air to water will do the trick. But that would be complicated with the water pump and stuff. What u could try is submerge the exhaust pipe in water with ice. That also wouldn’t restrict airflow. It’s not as affective as an intercooler but it’s worth a shot imo

[@rocket2739]

That's one hell of a hairdryer

[@goodyfpv2297]

Do you have enough oil pumping into the turbo at full boost sounds like the car that's pumping the oil is only on idol?

[@thepilotman5378]

I can't believe y'all got david Attenborough to narrate this

[@nzmiddamoore]

absolutely magnificent

[@rokoala2636]

Maybe a DPF filter before the turbo? Seems easier to do than some of the other filter suggestions

[@Camp_Dogs]

That’s a cool idea!

[@dave4882]

why don't you run the barrel in a vertical configuration? That should help keep the wood bits out of the turbine. I'd suggest a cyclone separator, but not how that would work. More oil flow sounds like a good idea. and turbo oil would help too.

[@2alawabidingcitzen]

Im tryna get my 7.3 powerstroke to about 30lbs boost I'm at about 25 now.

[@lau4893]

The world is in trouble. Aussie madlads are now turbojet engineers... We're as good as lost

[@Camp_Dogs]

It’s only going to get worse 😆

[@zachrogan9979]

The obvious next move is a twin turbo burn barrel right??

[@Camp_Dogs]

I like what you’re thinking

[@Artratable]

idea for the flame thrower exhaust, add nitrous to the injector port for kero injector

[@thewayfaringanarchists8157]

This is gods work

[@j.g.capponi2865]

If you inject nitrous into the compressor with a intake system it will keep the turbo a lot cooler and make it last longer

[@yakacm]

Is Sir David Attenborough on fiver? Jesus I just googled him and the man 98 years old, damn the BBC for making him carry on working at that age.

[@stickyfingers2413]

Like the David Attenborough narritive

[@Indicafatbud]

does it pass emssions in califonia?

[@DerinTheErkan]

This new Haltech you guys are trying out seems pretty cool, but it looks kind of like a knockoff of Halaltech?

[@HowToTurbo]

Halaltech wanted too much kebab sauce in exchange for their latest series of Hommus 2500’s. Had to go the cheaper route

[@cyrusthevirus6383]

Nice new Wuhan Whirleyboy!

[@wayneheigl5549]

how about some pressurized lube oil for those turbo bearings .

[@Camp_Dogs]

The Car is supplying the engine oil lol

[@wayneheigl5549]

thank you very much. you did not show it or talk about. sorry.

[@NavyCuda]

I think... I'm just spitballing here... but putting the waste gate on the exhaust side would make a big difference. I think you're really on point with a giant receiver, but I think the end cap should be cut off, a flange put on. so you can fill the combustion chamber. Put a combustion liner in it, and some kind of simple swirl vortex setup to prevent the turbo from being sand blasted by so much ash. I would imagine a smaller turbo would actually be better, keep the pressure up but total exhaust velocity down.

[@Franklin-jj4jz]

You need to weld an air intake venturi pipe at a 30-45 degree angle merging into the exhaust pipe to draw air into the exhaust. The hot exhaust has been depleted of oxygen, leaving a mixture of nitrogen, carbon dioxide, carbon monoxide, superheated steam and unburnt wood gas. It cannot support combustion of the kerosene. You might also consider injecting the kerosine directly into the red hot high pressure turbo housing. This will accomplish two things. It will flash vaporize the kerosine prior to ignition and in doing so will cool the turbo, greatly extending its service life. During the manned lunar program, NASA injected the relatively cool 1200° turbopump exhaust into the exhaust nozzles of the five F1 engines on the Saturn 5 first stage to protect the nozzle extensions from the 5800° exhaust during launch. If you watch slow motion film of the moon launches you will see a cooler dark band between the throat of the nozzle extensions and the actual exhaust flames. That's the cooler turbo exhaust insulating the nozzle extensions. Without this passive cooling, those engine nozzle extensions would have melted on the pad. kzbin.info/www/bejne/enzXh6Osr7p5Z7s