Hundested engine #3 - 45 HP semidiesel

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- Category: Marine Hot Bulb Engines
- Manufacturer: Hundested Motorfabrik
- Construction: Vertical onecylinder twostroke hot bulb (semidiesel) engine
- Power: 45 HP
- Ignition: Semidiesel
- Fuel: Diesel
- Cooling: Seawater
- Country: Denmark (Hundested)

[@lochlannach9256]

My grandfather was a fisherman his whole life. Sold his last boat when he was 86. He always swore by these engines, saying it never let him down, they just kept working no matter what he threw at them

[@charlieshrem3037]

Damn I’m even just discovering how powerful this lister engines were

[@vectravi2008]

This engine is so well designed in recent VW emission tests it passed with flying colours. 🤣

[@renevanginneken7217]

Only because of the software update….

[@vf.nightcore]

Myself, being from Denmark can tell that this is one of the most reliable engines ever created. When starting it with air pressure, you need a start-shot and then it just goes slowly and steady by the big wheel!

[@GamleJas2]

This was the sound of the fishing boats of every Danish fishing port back in the 1950's! What memories!

[@Lucianrider]

@@GamleJas2 And into the 70's. I passed through Esbjerg back in 1974 and the fishing port was full of wooden fishing boats and most powered by Hundested semi-diesels. It was a beautiful sound hearing so many boats coming and going with there single and twin cylinder engines.

[@fredrikstadmann]

Nice rytm...Love the old fishing boats from Fredrikstad sitting by the docks. Like it is music to your ears.

[@Chr.U.Cas1622]

Simply fantastic! Thanks a lot for saving restoring showing taping editing uploading and sharing.

[@albertkoeling7653]

Super video bedankt voor het mooie geluid

[@Michaeltot1]

@Motorsamling; Sådan blev det gjort, på de kuttere jeg har fisket med i glødehovedmotorens sidste dage. Hvis der ikke var "tørnet over top", startede motoren naturligvis baglæns, men den var som regel nem at vende. Har været makker med 1 og 2 cyl Hundested og 1 og 2 cyl Grenå. Vi brugte startpatroner, men de er nok ikke nemme at skaffe idag.

[@Aussie50]

I love the way it starts :D. it chooses the direction of rotation!

[@MrWildstaren1]

Fantastiskt vilken låg tommgång den har,de vill jag somna till

[@plryasuka6440]

so glorious engine sound is incredibly nice

[@albertkoeling7653]

Nog steeds leuk om te horen bedankt

[@mikeschoeffter7420]

I love everything about this engine, hook it up to a generator, what a fun way to make power.!

[@Bidone1967]

Sehr schöner Film! Interessant wie der Motor beim andrehen noch keine bestimmte Drehrichtung hat und das umsteuern der Drehrichtung! Schön das es auch viele Details zu sehen gibt. Der Sound ist natürlich erste Klasse! VG Bidone

[@SteamCrane]

I shut my eyes and see the boat.

[@heinz_beanz6339]

So in the event that this engine reaches "she's going to blow" rpm, what is the procedure.

[@dale116dot7]

Try to cover the air intake with a book or rag or something.

[@veager123]

sorry you lost me here, hot bulb exist in the head right? from what i know is that the diesel injector sprays on this part to ignite the fuel and start combustion. i thought that is why they were called semi diesels part of that being they could run on different fuels and they had low compression

[@kurtolsson9557]

Fint å lugnt startad👍

[@Mechanicboy]

Yes, later in 1950-60 period the hot bulb engine got glow plug installed to save time to heat up with torch lamp.

[@Pabcio]

Simple and beautiful. I would make power generator from this beauty.

[@skakpedersen]

Jeg fiskede i et års tid med en 3-cylindret Grenaa som drifkraft. Lyden af denne Hundested bringer skønne minder frem fra Østersøen.

[@albertkoeling7653]

Super motor lekker geluid en vakman bedankt.

[@hasse201227]

Nice sound!

[@SH1974]

Wow, what a Monster! Do Youhaveany further specifications? Bore / stroke, weight, RPM, flywheel diameter? Beautiful engine, congrats!

[@powripper]

just curious as to displacement and torque figures?

[@rickeymitchell8620]

satisfying sound and it blew nice smoke rings at times. loved it!

[@Michaeltot1]

En Hundested Motor startes rigtigt ved at "tørne" den. Derefter en startpatron og trykluft. Så går den rigtigt første gang. Det andet er vist bare leg.

[@douro20]

I think the thing will very much start in whichever direction it wants- it's a two-stroke engine.

[@schlusselmensch]

Not like a glow plug engine at all really. Model aircraft engines are catalytic ignition (the glow plug element reacts with methanol vapour at certain temperatures and pressures and combustion is initiated. The fuel in a hot bulb engine does not burn when it is injected. It is heated and vapourized but there is insufficient air to support combustion until the rising piston supplies it. They are a strange beast.

[@la7mda]

Fantastisk lyd på motoren! Jeg har jobba litt med sånne! T.

[@veager123]

As far as i know the fuel was sprayed on a hot glowing part in the head, allowing for low compression and all kinds of fuel. Therefore it burns when injected

[@remonviana]

vaya elemento con pocas herramientas lo que es capaz de hacer. me identifico con EL somos de maquinas.

[@vicenteremonviana7653]

este motor arcaico es SEMI-DIESEL DE 2 T mono-cilindrico y en vertical. de CABEZA CALIENTE y este FIGURA ( que me parece que es POLACO hace esas virguerias de cambiar el sentido de GIRO SIN PARAR ) el motor ya esta un poco JODIDO de COMPRESION pero aguanta el RALENTI.

[@K1ll3rM4st3r]

The engine switched its direction around 2:40 when it almost cut off, pretty cool

[@TheSpazModic]

The fjords must have been very smoky back in the day. But it must have sounded great echoing off the steep banks.

[@Dodgemakesit]

one word"torque"

[@rossie273]

With a capital "T"

[@johnlucas2037]

I like the glow plug instead of a hot bulb... so easy to start for such a big engine!

[@elNenio]

Vtec just kicked in yo!

[@karlh5645]

There is no E, it's more like M (manual)

[@renegadeoflife87]

Pretty sure most semi-diesel engines are just the blanket term for engines that use hot surface ignitions. They exhibit diesel-like behavior, typically utilizing air blast or direct pumped fuel injection, but the compression isn't quite high enough for a true diesel operation- they instead let the charge linger briefly in the cylinder until it ignites off a dedicated tube or bulb. The closest thing out there today would be the glowplugs in modern diesels that aid in cold starting.

[@captlarry-3525]

or model airplane engines which are hot bulb 2 strokes.this is a direct reversing engine.. which seems to be confusing some folks here. What is the compression ratio ? In modern diesels ( compression ignition) the glow plug only functions to start the motor.. in the hot bulb it stays hot and is the ignition source ( as opposed to compression heat, or spark). Is diesel or kerosene the fuel here ?

[@zOiNhUh]

Capt Larry - but it doesn't actually need a continuous source of external heat, since after the speed is stabilized the internal surface of the hot bulb ends up retaining heat from previous combustion cycles to ignite the subsequent ones. BTW sometimes a small amount of water had to be injected in order to cool it a little and act like some sort of ignition timing retarder.

[@richardsledgecock2110]

That man knows how to fine tune that beast...if they ain't set right people will run through walls to escape being killed by them lol!!!!

[@KevinWRay]

WOW very nice job on this one loved it!!!

[@rosewhite3495]

these big old single cyls were used on canal barges and slow fishing boats which needed long life and not much power or speed..

[@mrspivvy]

fantastic. I guess if used in a boat, no need for a gearbox, for reverse just run the engine backwards.

[@ВикторМащенко-ь3ф]

Супер фантастика вечные двигуны 👍👍👍👍😁

[@Alvon_PR]

small power big torque

[@andrewinpopayan]

these things will drive a 1 metre propeller AND a twin drum trawl winch, with generator, water pumps and other stuff, VERY powefull engines, rev up to 600 RPM under full load, usually started with "taensikker", which are screw in large matches/fireworks

[@jimnewman3569]

andrewinpopayan 8 k mi

[@111fishkiller]

Why is it we NEVER get to see these awesome engines run under a LOAD??

[@ytgsp]

Nearly every one of those engines ran under load for DECADES! They've GOT the torque.

[@ebbebruun]

OK this its the way to do i without compressed ait, but you ned some room in front of the engine, mark it starts reverse and is turned to run the right way by controlling the fuel injection

[@schlusselmensch]

You should do more research or perhaps gather more experience? My Lanz D9506 and my Vierzon 402 both have this type of petrol starting system. It was quite common on many hot bulb engined tractors.

[@seeul8rwaynekerr]

Far nicer to have a low speed engine like this to generate power than some screaming petrol engine. Nice work by the way.

[@luispadilla7519]

Hermoso motor felicidades 💪🇦🇷

[@arturczerwinski2616]

Wow, how did you manage to film and then smuggle a video from the VW engine lab?

[@creatioexnihilo6599]

Beautiful!

[@fredrikstadmann]

At 5:20, is that an auto greaser of some sort..Er det automatisk olje nippel system eller vad er det>

[@djlau1]

i remember this type of engine on a fishingboat on youtube and it has the same sound aswel

[@emielhofstede5050]

it start goed and runs nice we have brons engins industrie,hundested,armstrong,stork,samofa,lister,slavia,kromhout,tonycroft,duetz,petter,gardner,awa engins but we have a shit load of engins

[@steamwally]

Very nice engine, great sound! Is that a national engine next to that generator in the background?

[@6___________99_____________64]

Best startup procedure iv ever seen

[@rosewhite---]

Is that a spaghetti dryer in background?

[@valve0radio]

Biggest hand-start engine ever! What size propeller will it drive? What length boat is it suitable for? What is the bore and stroke please?

[@tpvalley]

whats the red wire for thats clipped to head? electrically heated bulb?!!!

[@chanakyasinha8046]

I m in love with this engine 😍😍😍

[@glasstronic]

Well done. Thanks for posting!

[@schlusselmensch]

Yes, the hot bulb is situated in the head but there is no oxygen available to support combustion because it was used up on the previous power stroke. If it worked in the way that you think, all you would have to do is place the engine at just past TDC (with the hot bulb heated), then manually inject fuel, and the engine would start! I assure you it does not work! In fact what happens is that there is a small puff and you are lucky if the engine rotates a quarter revolution or so.

[@schlusselmensch]

Also vibrator coil and spark plug for starting and warming up on petrol and oil mixture on many hot bulb engines around that time.

[@Windlass123]

Very nice ...!!!

[@kubanskiloewe]

i would say...nice throttle response ...no shit turbo lag :-)

[@druszan17]

what is semidiesel means???

[@mikeschoeffter7420]

2 stroke ?

[@dale116dot7]

A semidiesel is pretty much like a 'glow plug engine' - the ones many RC toys use. There is a 'bulb' that the fuel is injected into (at relatively low pressure). The fuel vaporises and ignites and burns. There is insufficient compression to heat the air and ignite the fuel (as in a real diesel). They can burn almost anything and do not require the high pressure injection that a real diesel needs, but the efficiency sucks very badly because the compression ratio is somewhere around 4:1 or so.

[@schlusselmensch]

My apologies, I checked my Lanz and Vierzon manuals and fuel introduction is even earlier than that. The fuel is introduced during the intake stroke, so even before bottom dead centre. Nevertheless, ignition does not take place when the fuel is "injected".

[@schlusselmensch]

On KZbin as well; Démarrage SFV 402 sur l'essence

[@jankjaer1731]

It Can run as low as 82 rpm per minut.

[@claesmansson9070]

Early Lanz Bulldog can run 0 rpm,it changes direction back and forth,this engine did the same before it chose direction in start.

[@ridzuannurain_z3811]

How much rpm ?

[@dragonbutt]

Can i run my house on it? :D

[@screamer427]

Well i think i know why you dont see a lot of this type engine around any more. Who in the hell would want to move this beast.To bad i bet most were just torn down and scraped what a shame i just love the sound it makes.

[@RafaelCantarella]

He works clockwise and counter-clockwise?

[@BenjaminEsposti]

Rafael Cantarella I'm not sure, but I think some of these engines might be able to do that.

[@Nordern]

+Rafael Cantarella As far as i am aware, most semi-diesels can work both ways, alltought that is not how they are supposed to run it is a bit questionable how well for the engine that is

[@MariaEngstrom]

Loud smoke ring generator.

[@RandomPlayer8]

what are those engine supposed to do?

[@mattgrooms3298]

Most ran a boat. You could hook a drive shaft from the propeller directly to the flywheel and have foreword and reverse without a transmission. They probably had some sort of clutch though for starting and stoping.

[@elonmust7470]

@@mattgrooms3298 they just bounced the engine back & forth maybe.

[@mikeymcmikeface5599]

This is the weirdest thing I have seen in a while.

[@WildfoxFabrication]

it didn't even make it past the first compression stroke till 1:30 in lol.

[@superrainbowdash9695]

I'm not the only one who saw it change direction mid run right?

[@b.atwater3904]

SuperRainbow Dash That is a direct reversing engine. It runs forward and backwards, no clutch or transmission. In a tugboat for example, when you want to go in reverse, you start the engine in reverse, then start it in forward to go again. There is a slight pause as the engine slows down, you change the timing on the valves so it runs in the opposite direction. Atlas and Superior are some other multi cylinder engines that work on the same principle. Running them is a blast. If you happen to enjoy that kind of thing.

[@dropinabucket1484]

@@b.atwater3904 But if the engine is turning in one direction, and the reciprocal weight of the flywheel is turning, then change direction, how does it not tear itself to pieces? Very cool engine, love this old machinery.

[@b.atwater3904]

Dropina Bucket If you watch the video closely, you can see that the flywheel moves forward and reverse when turning very slowly.. , all the engineer, or operator has to do is reverse the valves at the moment its already moving in reverse and it will begin to fire and run in that direction. Watch for it, you will see. I ran a 6 cyl Superior in a 1942 minesweeper and had fun doing it.

[@a2z7021]

Sinceramente è un motore che à veramente un bel giro.....

[@leopart1]

Ganz Geil.

[@schlusselmensch]

A common misconception. If the fuel did ignite at injection then hot bulb engines could run at much higher speeds. The fuel charge is heated in the hot bulb but until the rising piston supplies sufficient oxygen to support combustion, no useful combustion pressure is generated. If you check the injection timing of a hot bulb you will find that it occurs a little after bottom dead centre. Injection (at least in the diesel sense) is not the proper term really, it is very low pressure.

[@eduardelgadilloypesado1302]

que lindo motor yo quiero uno jajaja

[@Mechanicboy]

Not correct!!! Nonsense answer... glowplug installed into the cylinderhead instead a large hotbulb to save warm up time With blow lamp. Vibrator coil and sparkplug, buzzcoil with other word was mostly used in older petrol engine, never in hot bulb oil engines.

[@richardcole9558]

How can it run without sensors and ECU …😂..

[@captlarry-3525]

I think that is the damnedest thing I ever saw !

[@Motorsamling]

Tnx fr info. @Motorsamling

[@tompipps3383]

TOM PIPPS . FOAM - BATON ROIGE LOUISIANA USA . HI HELLO . I LINK LOVE THE ENGINE DIESEL .

[@remonviana]

estas virguerías las hace porque el motor esta relativamente bien de COMPRESION.

[@wi11y1960]

Bearing sounds dry.

[@v8monster186]

four stroke???

[@blimpass]

2 stroke

[@chanakyasinha8046]

See description

[@nelutu6506]

Pedal to the metal!!!! :)

[@mikeymcmikeface5599]

Petal to the medal!

[@sobatalamchannel7688]

Putaranya kok bisa bolak balik

[@herrfriberger5]

Tändkula, in Swedish.

[@VauxhallViva1975]

Sounds like a steam engine!!!

[@steamgeezer]

Anyone remember the line from the "Back to the Future" movie, "There's something Very Familiar about all this"

[@schlusselmensch]

"Semi-Diesel" was more a marketing term, there was nothing diesel about them, other than their massive construction. They were developed into diesels certainly though. I've never put a gauge on the line but I would guess the injection pressure to be no more than a few bar, not a diesel typical 120bar. I assure you that combustion does not take place at injection or even close to it. That could happen under certain conditions I suppose but that would likely lead to serious damage to the engine.

[@HeinzvonBeins]

@druszan17 one cylinder i think

[@Motorsamling]

Er det måske sådan? youtube . com/watch?v=nqLGQ4zkTWc Eller sådan? youtube . com/watch?v=6gvKba4Vdj8 @Motorsamling