Two-Stroke DIESEL Moped | Trying to make it run better.

[@raygordon1822]

Dear friend white smoke on any diesel indicates low compression ,check the comp if you can it may need a set of rings to fix .

[@Erik_Blomgren]

I haven't seen your other videos on this bike, so sorry if you already know most of this, but a few years ago a bike with a Lohmann engine was donated to our local museum, where I'm active. Since I was the youngest member at the time (best stamina) I had to try to start it. What I learned during my attempts and during research is that first of all there is a choke function on the engine, it took me a while to figure that out, but without using it it refused to start. When I used it the engine started without needing pre-heating. When running you constantly have to adjust the compression and throttle during the varying load of the engine. You can't expect it to run as good with the same adjustments on flat ground as it does uphill. Another thing, even though these were advertised as "Lohmann Diesel" they are not supposed to run on diesel! They will run on diesel, they will run on petrol, and they will run on paraffin, but the will not run any good at all. They are supposed to run on kerosene, with a 4% oil mix in the fuel. And running kerosene they will work much better. Lastly, these only have 0.75hp, and have a tiny displacement, so they will never feel very powerful, but they should be able to do at least 25-30kmh and be able to climb smaller inclines

[@coolhandluke1503]

What your saying is it's more like an RC diesel engine? Cool

[@jake20479]

i remember working on a 6v71 2 stroke v8 turbo diesel firetruck maybe 4-5 years ago that the town of Bridgeview in Chicago wanted some maintenance on. it was the absolute coolest engine i have ever worked on. it had unreal amounts of torque but my god, the first time the engine started after years of sitting, traffic had to slow down to drive safely on Ogden from all the smoke. it was like a house on fire until it cleared up. ill never forget that lol

[@probablysomeonesomewhere]

You mean 8v71? The 6v71 is a V6 lol that’s what the 6V is

[@jake20479]

@@probablysomeonesomewhere oops! youre right. must have mixed the numbers up lol

[@probablysomeonesomewhere]

@@jake20479 all good

[@Fogolol]

Had to look up a 2 stroke v8 diesel after reading your comment and DAMN IT SOUNDS ABSOLUTELY DIVINE

[@coolhandluke1503]

​@@Fogololyou have to hear one scream in real life to get the full effect

[@BlainesGarage]

Thank you for posting the link. It’s been 15 years since i tried running mine. I had it running briefly once but with some more info now available i should have a better chance at success.

[@wibble417]

Of all your fantastic videos this little diesel is my favorite 👍

[@JOOLZNED]

Its exactly the same operating principle as a model engine diesel, a little ether in the fuel will do wonders for easy starting and high speed running

[@robstirling3173]

Black smoke is the sign of excess fuel, white smoke suggests incomplete combustion, maybe low compression or injector/ delivery valve faults. 2 stroke diesels often suffered from stuck rings.

[@DatBlueHusky]

if only someone can replicate this and make a better modern version. It would be amazing to have a 2 stroke diesel

[@ladronsiman1471]

This was done by a Dutch team..They were planning to use the engine in poor regions of the world to pump water ... They did a great study .,..But the conclusion was not it was not good enough ...You can find it on the net a well put together page

[@johnwaga3702]

At least you managed to get it running better!

[@perlidberg7351]

This is my favorite on the channel, I love the little engine.

[@pauljanssen7594]

One way to make a diesel run better and more fuel-efficient the right amount of propane allows the air fuel mixture to burn hotter so the diesel Burns cleaner and makes more power.

[@sridharsri1535]

How to add propane to disel bro

[@henktulp4400]

I know of a kit being available that produces a small amount of hydrogen to make your diesel engine run more efficient and much cleaner; the hydrogen gets added through a small hose at the air intake, it reduces dieselconsumption considerably by making the combustion process more efficient at the same time reducing smoke emissions…. The kit producing the hydrogen is little more than a jar of water with an anode and a katode….

[@udenszirnis1644]

​@@sridharsri1535LPG kits are rather common for both gasoline and diesel engines in some places. I have a LPG system on my 2.5T gasoline Volvo, otherwise it would cost 30 euros for 100km on fuel alone. Now i can do 370-400km on 30 euros easily. On diesel engines it is mostly a power upgrade for racing. Though some do use it for economy.

[@andrewwilson6085]

Many years ago my brother had a James 98cc autocycle. When the engine had been warmed up, on petrol, it would run on diesel! 6:01

[@billthomas2639]

Yep Had a Massey harris tractor start on gas then switch it over to diesel

[@henktulp4400]

What a lovely obscure piece of machinery!!!! But as much as I can understand, at the time this supporting engine was developed, the temptation to make this a reliable ‘easy-for-all’ mode of transportation, I can understand how they threw in the towell at some stage…. I love your channel!!! Keep it up!!! Greetings, Henk, the Netherlands.

[@Stefan-d5e]

Nice Sound

[@Koronzon444]

Dear friend, due to diesels very low lubricity you will need to add some castor oil (20%) to that mix or you can run the risk of scoring or even seizing that little -->2stroke

[@justso1823]

Definitely need a ether kerosene mix fuel and a drop of cetane. Same as model aircraft engines. Load of recipes online or if you cant get ether in your country you can replace it with easy start

[@SepticWhelk]

Years of the needle vibrating in the brass jet , bigger hole more fuel ?

[@F4LPM]

Amazing engine

[@Kiwi-pp7rg]

Believe it or not, I am the the great grand-son of Rudolf Diesel for your interest. My suggestion would be to compression test it, tell me what you find. And what I said earlier is fact

[@Milo_Minderbinder]

Amazing stuff. Never heard of that before.

[@steveworth544]

It just need a 100 Km run..........great video.

[@screwsnutsandbolts]

Great video 👍

[@MrToxicSkittle]

18 cc is really not a lot. Perhaps this is all it’s got?

[@twocvbloke]

Well, it can certainly help you go round in circles at least... :P

[@ferguscosgrave7510]

Thanks

[@Joewho99]

Interesting video thanks for posting .

[@johnvrbka570]

If it starts that hard i believe its low on compression

[@philippm.1271]

it should be way faster (>30km/h). Are you using Petroleum? Dont forget to mix oil in it! It also has a varible compression you can adjust, maby its to low or high. Im German and maby i could help you try to find more information about it.

[@Mr.Fox_DE]

Sei gegrüßt. Der weiße Qualm ist unverbrannter Diesel. Es sieht so aus, als hätte der Motor eher ein mechanisches Problem. Verschleiß? Kompression? Er scheint nur noch einen kleineren Teil des Diesel zu verbrennen. Geiles Projekt!

[@DetroitMicroSound]

Here for this!

[@HyperMAX9001]

And now, copy it and make it bigger, as a bicycle kit engine. That looks like it has great fuel economy.

[@thebug4046]

I wonder if an ignition improver would help. Like a Ctane booster Which will lower the Ignition temperature and help a little bit with performance. I run a lot of model diesel airplane engines which run on terrorism ether and Castor oil and compression adjustment on top similar to this engine

[@MitzvosGolem1]

I mix a little gasoline in diesel to make it ignite faster .

[@Reiner_Markenfreund]

Nein, das ist nicht möglich. Es besteht jedoch die Möglichkeit, dem Gemisch etwas Äther oder Amylnitrit-Graphit-Öl hinzuzufügen, welches üblicherweise als Konservierungsöl für ballistische Werkzeuge verwendet wird.

[@MitzvosGolem1]

@@Reiner_Markenfreund synthetic two stroke oil and kerosene.

[@groeacht8525]

Im always surprised when you aren't just fluent in all European languages, especially when you're english is so good. Is it only the dutch that can fulently understand all there neighbouring countries languages?

[@michaelheimbrand5424]

I'm Swedish and it's about the same for us. Although I struggle to understand spoken Danish, Swedish, Danish and Norwegian is not the same but closely related. When reading it's pretty easy and I don't even can tell Danish and Norwegian apart when reading. German is for us all a lot harder. Too many words that differ. I didn't know that the Dutch has that "superpower".

[@filistincz5648]

Make a gasoline and oil mix 1 to 10. The diesel fuel is slow burning and requires long stroke, but gasoline and oil is more agressive when it detonate. On yt i found engine called haza 25d that was also compression ignition engine and it runs almost without smoke on gasoline oil mix. Needle doesnt have effect on mixture because you're adjusting mixture by the mixer throttle because the needle is not conicl (the flow of fuel is always the same you're only changing how much air is going into the engine). i also have the lohmann diesel engine but mine have 3 ring piston with coating. My english is bad so sorry.

[@thra5herxb12s]

If you remove the engine and attach a playing card to the spokes, it would be much easier to pedal, and would make the same sound.😁😁

[@marcelstifft7786]

Neue Kolbenringe!

[@SeasideGarage]

piston and rings are new

[@blar2112]

If it was running rich it would smoke darker, white smoke is probably low compression

[@furmaster212]

I'm sure the age and wear has caused it to make less power than new, but even then was it really meant for more than just an assist?

[@ziggyinta]

Needs a hair dryer blower 😁( standard 12v motor in most cheap ones)

[@qutube100]

love the lohman perhaps you could make a bigger better version (multi fuel for the future) could be a great watch along project for the channel!

[@ShinyUmbreon765]

Blood from a stone. Cool little engine, theres a mosquito 38b. Same concept but petrol and spark ignition making it work much better

[@neilmchardy9061]

Add a little surgical ether to the fuel, like model plane diesels

[@anidiotinaracingcar4874]

3:44 I would go much higher, like 3-4 bars. What do the sidewalls state as the max pressure?

[@billhacks]

Another case of if it worked well, they would have continued making them. There are far better ways to make this a practical machine. It is a neat museum piece.

[@sticker89]

add some Cetane number improver might help

[@MCalundan]

Fik for mange år side og vide af en gammel lærer på teknisk skole - når det omhandler diesel - så samles alt under dieselolie - og med hadsker - Morten

[@ladronsiman1471]

I almost bought one ..with a vintage bike ..It was not much ..But the shipping was ..I feared it may be a scam

[@livinlikelarry8782]

THE CLUTCH IS SHOT 🎉

[@joshuaharrison9331]

shame its not 50cc or something

[@Reiner_Markenfreund]

Dies ist nur mit einem Dreizylinder von 3 x 16,6 cm³ möglich, bedingt durch die Materialphysik.

[@theblackhand6485]

Diesel engine but multi fuel as well? What about running the engine on two stoke oil with gasoline (benzine)? Or gasoline mixed in with the oily diesel? Needle out probable slower fuel pressure. Needle in makes a higher fuel pressure. Did you measure the blow by aka space between the piston and the cylinder wall? Are the piston rings still fresh or just worn out? Spark plug or glow igniter still okay? ....my guess is the engine is worn out. Or, it is what it is. Or could be improved by using double piston rings. Another thingy could be the compression. But you said it is variable. May you loose compression through this mechanical system?

[@sixoffive]

Opening commercial; Harris campaign fundraising

[@ludeboukema4111]

its way too lean on oil i can hear it ruin it self

[@ludeboukema4111]

mineral oil isnt castor oil .. use a lot of pure nature castor oil and deethylether and parafine ... 20 per cent castor oil .... im not lieing

[@ludeboukema4111]

20✓\cent ... 5to 1 castor oil ... i made a motobecane engine with the same contra piston design .. dimethyl ether , parafine ( lampoil ) and 20 per. cent castor .... its a big fat diesel engine i can send a video of the 50 cc 30 to 1 compression self igniting engine running ...

[@ludeboukema4111]

lots of power !! i swear

[@jarikinnunen1718]

In best power perform diesel smoke is black.

[@garchompy_1561]

that is not true. smoke is simply unburned fuel, which means wasted power. a properly tuned diesel engine will produce no visible smoke.

[@jarikinnunen1718]

@@garchompy_1561 Why it happen in tractor pulling?

[@garchompy_1561]

@@jarikinnunen1718 Because in tractor pulls and drag racing, they run massive turbos for peak power and just run mechanical pumps with a range of right at peak airflow (and thus peak power). Big turbos take a while to spool up to push that air so at the start of a run they will struggle before clearing up and getting rid of the smoke through the run. Also, the extra fuel cools the engine, so running extra fuel in these very high power engines that run very hot, the extra fuel stops them melting. these engines are "Effective" but not "Efficient", they make a lot of power but not a lot of power for the amount of fuel they make. In Endurance racing, Audi ran a diesel engine and it was very fast for 24h straight, and that car made no smoke because in that type of racing you dont want to waste fuel as it leads to time loss from refuelling more often. if your street car (or moped in this case) makes smoke because of the fuel, it is badly tuned.

[@jarikinnunen1718]

@@garchompy_1561 What I said was for high perform, not high effiency. The grey smoke can be mostly boiling oil.

[@Colt45hatchback]

​@@garchompy_1561 incorrect. On a diesel if its running rich, its more likely to melt. Gasoline/petrol engines you richen the mixture to cool it, with diesel it melts pistons or worse, the diesel gets between the rings and explodes there, breaking the ring lands, rings and the crown of the piston, which then the fragments smash the top of the piston, the head and the valves.

[@theodor48ify]

in mechanics you show more (parts, operation) and talk less !!!!!

[@bigguy589]

Hi, your problem is probably that the diesel these days is not the same product as in the early days.Ther are too many additives. I know someone who has three of these running perfectly on lamp oil for a classic oil lamp. Succes!