Rolls Viper ASV8 turbojet hand-crank start
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- Опубліковано 8 лют 2025
- An unorthodox method of starting a Viper Mk102 turbo-jet engine.
Features a 45 degree exit to divert the exhaust from frazzling my lawn and blowing down the back fence in my 30 foot garden.
wow, that fuel bottle emptying time, was jaw dropping.
yep , what fuel tank does it need in real service ????
I thought the same thing... according to wiki this specific model, ASV8 was for a Provost mk3 for which I can't find any data.
However this series of engines (Viper) was used on a British Aerospace 125 which has 5,369L tanks and a range of 1,900 mi.
en.wikipedia.org/wiki/British_Aerospace_125
Now we know why the average helicopter like the Jet Ranger for example costs fifteen hundred bucks and hour to run.
You watch that tank go down and you suddenly understand how Concorde burned off between two and four tons of fuel taxiing from stand to take-off position
My God it's thirsty!! Now I know why piston aircraft still exist.
Well done sir you are officially the loudest neighbour for the shortest amount of time absolutely awesome great job
Colin Furze couldn't hack being this guy's neighbour.
That's what I was thinking, poor old neighbours. No sleeping in here!
Not nearly as loud or disturbing as a pulse jet.
@@ParadigmUnkn0wn I think you underestimate how noisy a turbojet engine is
@@richardmillhousenixon I think you underestimate how noisy a pulsejet engine is. Not even the great howl of the J79 turbojet can approach the noise of even a modestly sized pulsejet. Pulsejets are literally rapid explosions (technically deflargations). That percussive sound travels much farther and is less attenuated by walls/structures than the high pitch whine of a turbojet.
I'm not saying this thing isn't loud, it surely is. I'd even recommend doubling up on hearing protection when that close to it (muffs + plugs). It's still not as loud as a pulsejet, and a pulsejet isn't as loud as a pulse detonation engine.
The second time through I noticed how fast the fuel was disappearing. Great video, thanks!
Good catch.
I was thinking the same. A gallon in around 1min just idling.
@@carlosmatias474 its not really idling when hes spins it up really fast and then went for a full throttle for a few seconds
She's a thirsty girl!
Turbine engines consume an incredible amount of fuel. They burn fuel at a constant rate. Piston engines are actually much more efficient. They're not as fast, smooth or nearly as reliable though.
and that was only idling, fully cranked and fuelled to max, he and his house would pass over the neighbourhood at 30,000ft several times a day! love it, more please.
Dude. Absolutely my favorite video of the day. 1.) Hand Started Turbine Engine. 2.) 🇬🇧 3.) Backyard. 4.) Watch that turbine absolutely inhale that fuel…lbs per hour is wF if I recall…absolutely insane!!! 5.) old guys rock!
Your neighbors must love you, "GAAAAAAHHH HE'S FIRED THAT BLOODY THING UP AGAIN! " 😁
The rate it used up that fuel, I doubt the neighbours would be hearing it for long...
Say again dear?!
I can't hear you because he's fired that bloody thing up again!!!!
Our street is all gearheads. They'd probably come over with beer and lawn chairs.
Beat me to it!
Pardon me sir do you happen to have some jet fuel I could borrow I seem to have ran out.
I have just witnessed a jet engine being started... by _hand-crank_ !
My life is enriched, thank you Pete.
As cool as this is, it's not started by hand. You can clearly see the big startermotor driven by his 24v supply. He probably just cranked it up by hand to relief his startermotor a bit.
I had a 16 mm film print, I think it was made by Shell, which showed a gas turbine fire pump being started by a hand crank.
@@Duif_RS6 ..and it sounds like the starter motor has some kind of 2-speed low/high solenoid-driven clutch.
@@matej.m.rejsek8537 It is probably just a soft starter, so it doesn't overload his batteries upon start
Yep. This definitely isn’t 100% hand cranked because you simply couldn’t crank it fast enough either through speed or gearing by hand.
A series-wound starter is tantamount to a short circuit directly to ground when stationary. This is why they provide such an awesome amount of torque and have been used to move locomotives for almost a century and make EVs ridiculously fast…. but they draw about 1000-1500 amps on startup.
The current goes down very quickly after the engine starts turning due to the back EMF in the starter motor.
On the King Air 200 to start the second engine you do a “generator assisted” start. Since the generator produces 28V and the battery 24V (though the starter reduces this by quite a bit) it wants to take the power from the generator first which will destroy brushes and blow current limiters.. so you turn it off until the engine has lit off and is accelerating, then you turn it on so it can help start the engine.
On the King Air 350… it has a generator control unit that automatically limits the current on the generator during a start sequence.
I live about 4 miles away and can confirm it’s a great sound.
😂😊
Dayum I'd come over to see it in action irl!
@@Jeremy_Moroyou guys soon lucky🙋
@@jrusvijr6988 Except that I live over 2000 km / 1242.7mi away 😂
Gives a whole new meaning to low flying aircraft !
My dad was a dare devil maverick who would have absolutely loved and supported work like this.
This whole thing is a credit to you - This world needs many more people like you.
I am amazed how quickly that thing gobbled up the fuel!! Its absolutely beautiful Pete.
When you want a patio heater but feel that the ones at the store aren't quite powerful enough
Combination patio heater/leaf blower
@@manitoba-op4jx How the hell would they measure "Brake HP" on a Turbine engine? They measure them by Thrust....
he is a good guy just wanna heat all the neighbourhood yeah a little bit noisier who cares
@@huseyinmehmetaltun2046 🤣
World's most powerful blow dryer.
2 bricks are the only things stopping this beauty from breaking free
I wondered about that myself. Sure it isnt made to give thrust but even a little thrust on something this big would be a lot 😬
en.wikipedia.org/wiki/Armstrong_Siddeley_Viper
It drives a shaft...not a pure jet thrust...
@@JohnSmith-yv6eq it is a turbojet
there is not power shaft to take the power elesewher
@@ronchappel4812 😬😬
And he was standing in front of it. I thought it would lift off right there.
What a lovely well kept engine. I worked on those engines when I was in the RAF, on the Jet Provost.
I love how quick the fuel goes down, and that's only a small engine.
How big were the tanks in the JP ?? And what was the typical expected endurance, I actually miss seeing them in the sky over Sleaford out of RAF Cranwell.
@@PhantomMark Length wise, about 6 feet. Volume wise, 350 lbs per side. A mk3a with full tip tanks had the same volume as a mk5 without, that was 2150 lbs. Max flight time was about an hour so a typical sortie was about 45 minutes. I managed to scrounge several flight when I was at Church Fenton.
I had a car that drank about as quick as that :'D
@@Teab8g v12 jag ! 158 mph on the speedo down m5 !! You could see the guage drop !! Dropped 2 valves in 2 cylinders . That's what happens when 2 people stand up out of the sunroof at v max ! Quite naughty behaviour really !!! £8000 for a new engine in 1990 ! Daimler Double Six only 4 years old !! Good old days 😁👍👍👍
@@SimonAmazingClarke Cranwell is virtually dead compared to when I was a kid, the air was literally buzzing with JP's and Andovers etc back then, quite sad really.
Wonderful stuff Pete. NOTHING beats a bit of tomfoolery in the back yard, Love it.
talk to his next door neighbours first before you move there if they can hear what you are saying to them.
Sounds like you've spent a lot of time beating off in the shed "fixing the lawn mower"
I've flown in the Jet Provost, propelled by one of these engines.
Often referred to as a "variable noise, constant thrust unit" because it didn't seem to matter where the throttle was set, you weren't going to go any faster.
Mm I had to change a engine at Wittering . When I asked where I could carry out post ecu ground runs I was shown an area near the Harrier ASF car park . I commented that the ground runs up to max power would dump grass and dirt on the parked cars. Got comments of our APU is bigger. Had to move to a taxiway as I blasted debris all over the parked cars. Don’t underestimate the viper it has a bit of a bite
Variable noise, constant thrust unit AKA every honda civic shifting 10 times and still only going 30mph LMAO
I had a Datsun like that once. More throttle just meant more petrol, not more power. It didn't even make more noise.
More fuel in means more power out, right? Not if you're a Nissan A-series it doesn't.
Kind of like I've heard Harley-Davidsons described, the most efficient way to convert fuel into noise without the annoyance of horsepower.
Interesting. Finer aspects of engineering. Thank you.
Looks like the hand cranking provides maybe 10% of the needed starting revs... just enough to stop the batteries melting down during initial rotation. Fun to watch though and the thirst is remarkable. I guess the neighbours moved away some years ago ;-)
Moved away? They probably opened an umbrella in the garden and were never seen again!
Kept the belts from slipping.
Hi Steve, yes you're quite correct in that the initial hand-cranking stops the batteries and starter motor from going into meltdown. Even then, starting current reaches 700-800 amps when both batteries are in circuit.
@@peteterpeluk1020 I notice you didn’t comment on the neighbors lol
The neighbours are still there. No one's seen the cat for a while, though.
This guy definitely knows how to maintain a good relationship with his neighbors.
The biggest cost of filming the video is paying for the neighbours to go down the pub for a few hours...
I see the beginnings of a very powerful lawnmower.
Colin Furze has entered the chat
You mean snow blower!
Wouldn't even need blades. Just direct the exhaust downwards and run it like a hovercraft to effectively erase the lawn.
imagine the carnage
That was the best visualization of a jets fuel consumtion ive ever seen ,
Love watching the dinosaur bottle deplete itself so fast. When I was in high school we took an engineering class. In this class the instructor brought two rc jet engines. They were very real jet engines that ran on jp8 and although tiny they offered a significant amount of thrust. He had an idea to put those engines on a go kart and then we would drive it around the school parking lot. For the class final exams he gave each group of students a different aspect of the project to work on. One group dealt with the stopping another on steering and other chassis items. And another group mounting engines and such. We got to use everything he taught us about 3d design and printing along with using solid works and cnc equipment. It was a truly blessed opportunity that I sadly didn’t take full advantage of. The point of this story is I remember the first time we test ran one of the engines to get an idea of how serious the brakes needed to be. We watched our fuel cell drain the same way. To me with jet engines when it comes to fuel efficiency the answer is simply no. The only way to get good fuel economy in a jet is to fly as fast as possible!
They actually get more efficient with altitude as well.
The ultimate in geekness! Well done Pete for keeping old stuff going and alive.
I would be a happy person to have a bunch of folks like yourself living around me. No joke, it would be epic! I love stuff like this.
Imagine living next door to this guy. "Sounds like your starting a jet engine! Oh you are". Awesome work.
That's some crazy stuff. Lucky it did not pin you to the wall. As a Test Pilot we used to burn the fuel out by placing the aircraft in
deep blocks and chain it down. Run it up to about 30% and let it cook. You use bricks for chocks and divert the exhaust vector.
Brave MAN !!!!
You sir, are a legend. That is absolutely awesome. She's a very thirsty girl looking at how quickly it's disappearing from the tank. Bet you get the washing dry in no time with that though! I'd love you as a neighbour if I could hear that fired up from time to time.
I'm sure your neighbors appreciate that tiny fuel cell! I watched it get sucked down to almost nil during operation! Good show!
Thats the first engine I've ever seen that used more fuel than my old 1300 Morris Marina, Bravo!
Haw Haw 1300 pickup marina 4 gearboxes in as many months 1st motor I had what a crock !! At least it had a 1275 and arse end drive !! Again what a pile of pity ......
@@christopherhampson265Can beat you with the All-aggro that ate 6 transmissions in a year..
@rosiehawtrey You must have been blessed with the wildly overpowered twin carburettor model !! They made a lot of Monday/Friday cars !! At least yours didn't have any corners to go rusty 🤣🤣🤣 👍👍👍
Love it! Absolutely brilliant! There were a few of those in an ex-RAF scrapyard in Malta back in 2010, and sadly the owner of the yard asked way more than I could afford as a student back then, even though he was going to chuck them away anyways. Would've given my right arm to drag one of those back home with me and see the look on my parents' face.
I never, ever thought one could hand crank start a jet engine. I've learned another useful fact from You tube. Thank you, Sir!! Watch the fuel level in the jug visually drop before your eyes. Not the most economical engine you'll ever see...
Congratulations sir! You just invented a new way to truly burn money!!!!!!!!!!!!!
Incredible sound. I love the sound and duration of the spool down too.
Absolutely class video! Quality engine with a severe thirst.
Emptied that tank out in quick time .
Awesome. Looks like it was hand cranked as fast as he could, then engaged electric starter. Amazing watching the fuel being consumed so rapidly.
I didn’t notice that until you pointed it out- and it was nowhere near flat chat!
It has a gear reduction. That is "Electric Starter" is an alternator.
@@trxtech3010 you are quite gullible and know nothing of jet engines. No way you could hand crank start a jet engine. If you would look, you would see two huge batteries and thick cable to the "alternator "
@@artmario5429 Technically he does hand crank it. This gets the rotational speed of the turbine to match the starting speed of the starter/alternator so that it doesn't torque violently when applied, but the starter does the starting, but he started the starting by hand cranking... Who made who?
@@artmario5429 The motor/generator belted to it is bump started by hand cranking before applying power. Also you totally could hand crank a small enough jet engine, but you'd need a 3 speed or 4 speed gearbox to get the compressor RPM up enough.
Great video.
Glad it's yours and not mine.
I hated those things when I had to work on them and now that I'm retired, don't miss them. The sound of that whine never leaves your head. Not bad now, hang a prop on it , and tip speed is unbelievable. Brain piercing scream even with ear muffs on. Love the RR engines (except this sound !!!).
Look at that fuel level drop! Bet your neighbours love you! Great stuff! 👍
Beautiful! No talking, and directly to the point.
This is absolutely incredible to see. What a beautiful display of engineering.
That is a beautifully kept engine and sounds superb!!
Blimey !!! and you stood in front of it. Amazing to see how easy that was to fire up too. Now thats got to be a project to fit that into something now.
I think everyone in here would love Pete as a neighbour. Everyone not in here, maybe not so much... 😸
That fuel jug didn't empty near as fast as I thought it would. Nice machine!
I like how he confidently stands right in front of it with 2 bricks stopping it.
Reminds me of my time in the USAF, foward air control and I had four gas turbine for power. Two 60 kw and 2 20kw. Ran on JP4. Great running, low maintenance. The two 60’s had a 90 degree deflector. Found that if you put popcorn in a pot over the discharge, with gloves on, faster than a microwave. I guarantee it or my name is not Joe Isuzu
Right up there with the USAF radar tech that found out microwave radar did a damn good job of cooking food.
@@armorer94
and humans....
@@JohnSmith-yv6eq too right, I heard of someone getting turned to ash at RAF Fylingdales while working on a dish and somebody turned the megawatt capacity radar on. Fred didn't turn up for lunch!
if Richard Hammond was your neighbor, he would be having flashbacks. What an amazing hobby
OOOoooohhhhh MMMmmmmyyyyyyy.... that is amazing!!! What an amazing experience to see that! I'd would have never believed it if I hadn't seen it.
I can only imagine the neighbors being like "WTF is that sound? Is that a jet engine?". While you are playing with your actual jet engine.
"Yes, is this the police? Yes, I want to make a noise complaint."
Police phone operator: "And what does the noise consist out of?"
"It sounds like someone is powering up an airplane in his backyard. There's a jet engine roar."
Police phone operator: "An airplane?"
And when they might check it out calling you back (at least that is what sometimes happens here): "Upon going on-site we were able to confirm that the source of the noise complaint was a full-blown jet engine." :P
Thanks Pete, that made my morning! Used to work on indusrial gas turbines. Always used to make me smile when they started, almost like they would never stop accelerating hahaha. Good luck! :)
‘I love how quick the fuel container was emptied!
Dude, you should move to Texas. You'd fit right in and no one would give you any grief about running that thang.
I worked on the Jet Provost Mk 3 and 5's . The Mk 3,s at Church Fenton, Linton on Ouse and Mk5,s at Finningley. Also HS 125 Dominie also were equipped with Viper engines.
While on Mk 5's We had a major problem with the fin when one aircraft with two instructors landed at Llanbedr. This also had something in common with the Viper with the Jindivik target drone.
As an Air Radar line mechanic in the late 70 early 80's and a civilian contractor in the 90's I'll always remember the sound of this engine. Not forgetting the sometimes spectacular wet start as shown here.
Hi David, so many interesting comments/people! It's a great shame not to be able to have a proper conversation about Provosts, Vipers, etc.
Thanks for watching and your comments.
Wow, how cool is that. What a beautiful piece of engineering!
Loved watching the fuel level go down so quickly!
Nicely done and a beautiful example! ☺️
I'm dying. Your neightbours must absolutely love you.
This is badass. You would be my favorite neighbor. You could fire that up every day as far as I care, as long as I can come over and watch.
I will never complain about my neighbour and his hedge trimmer again! Wow!
This was great. I loved seeing the fuel consumption marks on the can. I'm guessing you ran up to about 5% of the engine capacity. I suppose running to 80% would have you flying. Beautiful engine. If you ever need an air-raid siren in your neighborhood, this would probably act as a replacement.
Yeah, that's was pretty cool to see the fuel draw.. I've heard that some fighter jets can consume 20 gallons per second with afterburners. I always wanted to see a visual representation of that even if scaled-down. Today, I have.
He said in comment above the throttle up was to 60%, not 5%. This is a small jet engine, most produce thrust to move an aircraft but this one does not.
Hi Donald, it idles at 30%, producing next to no thrust. I opened the throttle briefly to 60% at one point without much reaction, but at 80% things would most likely start to happen. Hope to try that later this year. Thanks for watching.
@@peteterpeluk1020 Hi Mr. Terpeluk. Didn’t expect a reply from you here. Just wanted to say great job on the video, awesome that you could share this and build it. There’s another jet engine enthusiast guy in Chicago, if you’re ever around and want to build stuff if we can get him connected.
@@peteterpeluk1020 Thanks for responding. The 5% was a total guess on my part. Not surprised I was off. Do you have any plans for putting the engine to work, maybe attaching it to a vehicle, or maybe a powerboat? Or is it just too small for anything like that?
i love how one can see the fuel draining like crazy
I love the way the levels in that tank went down.
The difference between men and boys are the size of their little toys. Thank God I had friends like this because I learned a lot from them.
Amazing, I've never heard of a hand crank on a tutban engine.
I’ve never heard of a tutban engine either🙂
@@biffaozzie2373 the neighbours tut tut and the fuzz ban you.
That was the famous Tutt-Tutt Bang engine I think you'll find....
That's amazing. I'm sure you had to warn your neighbors before starting it up like that!
Hero
Only just got around to seeing your comment. Thanks Colin, you've been my inspiration from the first time I saw your diy turbojet projects!
This is so AWESOME! You neighbor must love that thing, lol. Thanks for sharing,.
That is the coolest thing I’ve seen in a while! That fuel just draining away so fast
Absolutely brilliant, well done mate.
Pete's Neighbor: "I am calling to make a noise complaint!"
Police: "WHAT??? I CAN'T HEAR YOU!"
Pete's Neighbor: "I SAID I AM CALLING TO MAKE A NOISE COMPLAINT!!!!!!"
Police: "WHAT??? LOOK, YOU'RE GONNA HAVE TO TURN OFF THAT JET ENGINE BEFORE I CAN HELP YOU!"
-victory for Pete
Brilliant! 👏🏻👏🏻👏🏻 A beautiful early example of a great British engine. I fondly remember back in the 1960s and 70s watching and hearing many Hawker Siddeley (formerly De Havilland and later British Aerospace then Raytheon) 125 executive jets screaming in and out of Luton airport! For many years, and possibly still current, a 125-600 held the noise record at Luton, at I believe some 123db!
A much widely utilised engine with many variants and applications.
en.m.wikipedia.org/wiki/Armstrong_Siddeley_Viper
I wish I had one of these, I can see the appeal, the sound is amazing. Awesome vid!
totally awsome, real clean kept turbine, thank you ever so much for shareing this, really enjoiyed that.
Thanks for your kind and appreciative comment.
I bet the neighbours love you!!! Awesome stuff!! That fuel doesn't go far does it?
I will bet that the neighbours really look forward to that.
LOL!!!!!!!!!!!!!!!!!!!!
That no load fuel consumption rate! Incredible!
Two fitted to the HS125 and they said it was a very dear plane to run, they use much less now.
This thing is very efficiently converting fuel to noise, and I am all for it.
Always good to see a garden gate where the brace is on the correct way round....!
Having some great (amusing) comments and yours must be in my top ten!🙂 Thanks!
Nice toy to have in your back garden. I wonder how long it took you to perfect the line on the fuel tank for starting the power down so perfectly
Hello neighbours
He’s either telling everyone he’s here or he’s trying to upset them probably with the smell of burnt jet fuel lol…
Cripes! How on earth can you get permission to start that thing up in your back garden? Bet the neighbours just love you! 😎👍😎
Permission? In the UK do you have to ask permission from the government to do anything?
@@rubiconnn no, you don't.
Permission??? Wtf is that lol?
@@wurly1 LOL you need a license to watch tv.
I'd love to have you as a Neighbor, but I suspect many would disagree with me. That was awesome.
without a doubt he is the most beloved in the neighborhood
Very cool, thanks for posting. How/where/why did you get this engine and was it working when you got it?
My question also ! Where did you get that engine ??? I would love one too !
Did it cost much ? Very expensive ??
en.wikipedia.org/wiki/Armstrong_Siddeley_Viper
Surplus?
Originally the Viper came from the Rolls-Royce Aero-engine school in Derby. Cost around £2000 and a further £1000 to see it run in the video. No, it wasn't working and had been used for instruction, so many seals were missing or useless. I had no intention of running it, but simply motoring it got boring! There has been a Viper on ebay quite recently for £2500, a good price.
Nice bit of kit there. Drank that few litres of fuel in no time. What was this engine originally used in?
Hi Paul, the engine was original fitment for the Percival Jet Provost Mk3 trainer, which was also used for the RAF display team "Red Pelicans" before days of the "Red Arrows". Oh, and at idle it drinks fuel at a rate of 60 gallons an hour, so the container you see is worth about a minute.
@@peteterpeluk1020 I am not sure if you did this intentionally, But I like the way you let it spool down some before the fuel ran out, so that it could cool off. Again, Not sure if this is intentional or even needed for just one min run up (would it get too hot after just one min, lots of heat sink metal there, and so much heat thrown out the back.
@@brycering5989 Hi, thanks for your comment. The simple answer is that I didn't want the fuel system gulping air which would then need to be purged. After the sixty seconds running the engine barely gets too warm to touch.
Brilliant!
She gobbles that fuel down! Where did you find her...?
I I was just thinking that . . . you can see it literally disappearing from the tank !
HER ???????????????????????????????????????
She’s sweet!!!
You look like exactly like the sort of person who I picture in my head who loves messing around with old jets engines and if you were my neighbour I'd be round all the time joining in the fun hehe
Wow, amazing. That's not someting you see every day, in fact I cant remember the last time i saw an Austin 1100 estate! Neat hairdryer too.
you know you have something with a lot of HP when you can see the fuel level going down.
Either that or it is horrendously inefficient!
Thats the coolest two-wheeled tractor I've ever seen! 😁
I wish I had something this exciting in my back garden!
That is THE BEST cement mixer I've ever seen!
Dude, you have some SERIOUSLY neat toys...
Thanks for the demo! Most interesting watching the fuel container empty!
It was amazing seeing just how fast it was going through the fuel!
I've seen a lot of things but never before a jet engine with hand crank... but This gives me some ideas about my noisy neighbours.
The sound is absolutely inspiring !
The speed at which the fuel level drops!😮 You sir, are a madman, and I applaud you for it.
That thing is 2 seconds away from blasting through your wall 🤣
Also, I wouldn't mind having you as a neighbor IF I could come over and watch you play with turbo-jets
Wish I had a neighbor like you. Awesome!
Lovely. I went inside the Tyne compartments on a Type 42 Frigate and watched them fit the Olympus turbines as an apprentice.
When theres a power cut thats one hell of a back up system!!......for the entire town !
Beautiful sound, beautiful machine. Can literally see the fuel level dropping.