In my country (Hungary) there was a bike engine called Dongó from 1955-1957. It was almost like a Garelli Mosquito except it had a cast iron piston, a more modern throttle lever and a hungarian made carburetor. Because of this thing they call any bike engine in my country a Dongó.
@Jim-ic2of3 ай бұрын
More Lohmann video !😊
@joshuaharrison93314 ай бұрын
I would love for a retirement project to make an engine from moped parts a reliable 50cc diesel, with glow and maybe even a fuel pump.
@twocvbloke4 ай бұрын
One thing to consider is that the lamp oil you used may not be the right fuel, if it's the stuff designed specifically for lamps, it's designed to be a clean-burning wicking oil which dosn't burn as well as paraffin (as us brits call it, kerosene elsewhere in the world, even called petroleum in some places to add to the confusion!!!), so that could be the main problem with it stalling, the go-juice just hasn't got enough go in it... :)
@legless19564 ай бұрын
Here in the UK I found kerosene which is domestic heating oil which is similar to paraffin except it has a high sulphur content and less refined than paraffin. its way cheaper than the paraffin that you would use for lamps and heaters inside the house that has no sulphur and burns clean. UK kerosene would be a smelly bad idea used inside the house
@twocvbloke4 ай бұрын
@@legless1956 It's also a heavier fraction, so if used in lamps it's very smoky and unpleasant to use, and clogs wicks which makes lamps unreliable, Paraffin (Official dsignation BS2869 C1) is a lighter oil than heating oil (BS2869 C2) which is why it makes it better for lamps (and other purposes such as use in spark-engines), it used to be a dirt-cheap fuel, but as with many things, as its' use fell out of favour, it became less common, and prices went up when people did have demand for it...
@SeasideGarage4 ай бұрын
I will try with kerosine and see.. :)
@MitzvosGolem14 ай бұрын
You can re-weld piston and repair it in a lathe. I have done so many times . I also put a small amount of Kerosene and Gasoline in diesel fuel to help older motors start . Perhaps a lower gear ratio needed on hills may help. A danke Schoen
@feraltweed2 ай бұрын
Man that thing is over the top on the cool chart. I wonder if it’s possible to convert a weed eater engine to combust on compression
@FoxoTheGamer5 күн бұрын
More than most likely! If you take one of those 4-stroke weed eaters, give it loads more compression and swap the spark plug for a fuel injector, it might just work. But because of the extra torque diesel puts out, I'd recommend possibly upgrading things like the crank, conrod, piston, etc. to handle it.
@wazza33racer3 ай бұрын
Its ALIVE !!!!
@Ugloke4 ай бұрын
Maybee use a gearchanger from a mountainbike, then you will have some fixed points, in the differentiere compression areas. Just an idea 🙂
@ShinyUmbreon7654 ай бұрын
It looks like it needs two cables. Enviolo/nuvinci shifters have two cables and retain the position it gets set in. Not sure if that's any different. If it has one cable then a friction shifter with little ratchets might place nice.
@borisborisov1954 ай бұрын
I had airplane model engine which is basically same design in 1.5cc form. The most basic fuel for testing was equal parts kerosene ricin/castor oil and ether.
@johnwaga37024 ай бұрын
What a great little bike - you certainly love your quirky modes of transport!
@bytesandbikes4 ай бұрын
I suspect that vegetable oil would work quite well for this. Good lubricating properties and a relatively high flash point.
@JOOLZNED5 күн бұрын
I read the original manual for the Lohmann diesel the other day, it states the ideal fuel to use was low grade petrol 80 RON or lower, this is far lower grade than modern fuels and will obviousley self ignite easily under compression
@DetroitMicroSound4 ай бұрын
The largest reason I'm a patron, right here. ....While the rest of me waits for you to discover rally cars.... 😉
@noahwail24444 ай бұрын
Thank you so much for your Lohmann series. It has facinated me for half a century, but all I knew was from books, so great so se it live and living. I have often wondered why nobody have persuated the idea(s) from this since. I find it quite brilliant...
@paradiselost99463 ай бұрын
niche market, and they never went well enough so shot themselves in the foot? why 18cc? lot of work to make one, were probably expensive for what they were, and too finnicky for anyone to tolerate... i love the tucked in design, hate the friction drive, love the diesel, hate the weird arse variable compression and throttle, love the concept... throw on a small generator, run something like a glowplug on PWM as a "hot bulb" system instead... can preheat heavy oil electrically, vaporise it, let exhaust heat take over as needed... i had lots of ideas before they got banned here... sigh... though, making a modernised "hot bulb" doesnt sound so stupid anyway... hmmmm....
@perlidberg73514 ай бұрын
Äntligen Lohmann igen. Intressant liten motor
@kristianmandell51944 ай бұрын
Se där. En bekant i kommentarerna. Hoppas det är bra Per.
@perlidberg73514 ай бұрын
@@kristianmandell5194 vad kul att du också följer.
@Iowa5993 ай бұрын
You need a starter, for testing... Maybe use a treadmill, the exercise thing for running inside & going nowhere. Either with the belt or with the tire on the roller.
@orionpitman33694 ай бұрын
HI I find that little engine so simple in its own way yet so complicated in its own way hope you do sum more work on it. ps nice vice grips???.
@furmaster2124 ай бұрын
Add some ether directly to the fuel will improve starting and combustion. It's just like a diesel model airplane engine!
@kevinnye51324 ай бұрын
You have some very interesting toys Seppo 😁, is cool 😎👌🏻
@robertngreen64 ай бұрын
What an incredible machine! Fascinating!
@kristianmandell51944 ай бұрын
This was so cool. What a nice little engine
@watsonwatson80514 ай бұрын
Very nice, thank you. It would be cool to get the fuel mix so the variable compression had more operating range. I always learn something here, in such a relaxed way.
@ianhighley-zo3es4 ай бұрын
What a fabulous machine. Many thanks for the series, would be interested in any of the other mopeds you have.
@lesklower72814 ай бұрын
I am very impressed l never knew there was an assistant small diesel engine for a push bike wnd such an interesting motor its not like any covetional design of any two stoke four stroke and diesel engine which makes it ever so interesting
@lesallison90474 ай бұрын
Love this stuff, thank you 😊 ✌️💚 🇬🇧
@dylanwinn34 ай бұрын
since you're having trouble with the higher compression settings, maybe try leaving out the cetane booster from the fuel
@SeasideGarage4 ай бұрын
Pretty sure the cetane booster makes higher compression possible :)
@doctorlighthouse4 ай бұрын
Hi. Why do you use kerosene instead of diesel? Self-ignition temp is about the same, but more lubrication due to higher viscosity + cheaper. And I think the engine was designed to run on diesel. Greetings from 🇧🇪 Belgistan!
@MitzvosGolem14 ай бұрын
Many diesels seem to start and run better on kerosene. We use in winter on old machines here in America.
@SeasideGarage4 ай бұрын
Im told the diesel will wreck the internal parts of the engine.. (when left standing)... but will try diesel also, and flush it afterwards... :)
@ShaunMurray634 ай бұрын
Epic little engine.
@J.F.K.O4 ай бұрын
I would rather have this one than an electrical bike :P I can imagine you would be popular if you took a ride in Copenhagen :P
@adamknopp66314 ай бұрын
Fantastic!
@anidiotinaracingcar4874Ай бұрын
It might be the camera angle but it looks like your handlebars aren't straight (relative to the front wheel )
@kosir12344 ай бұрын
almost useless as an means of propulsion, still way more interesting than E-bike :D
@目黒渋谷4 ай бұрын
I think its too rich fuel mixture. I checked several videos of lohmann 18cc and compaed exhaustgasses. Your engine emitt toomuch unberned fuel. Needle adjastment or thicker fuel? Bio fuel, aka cooking oil, may help you. Anyway thank you for the video!
@impuls604 ай бұрын
A custom one off piston for 100usd? Thats cheap since theres so much machining involved.
@SeasideGarage4 ай бұрын
euroes... but I am not complaining! for the amount of work its cheap! but a lot for a 18cc piston! its tiiiiny!
@MrToxicSkittle4 ай бұрын
I can’t remember if you covered this already with the dripper. My thoughts are that traditional 4-stroke diesels control the ignition with injection timing. This way, they can almost completely eliminate preignition. How does that work for 2-strokes? So they draw in the air-fuel mixture similar to “normal” 2 strokes? Anyway, very interesting to see more fuel experimenting!
@SeasideGarage4 ай бұрын
Yea its controled like normal 2 stoke and preignition is controlled by the compression... it gives the rider and owner a pretty important task to control!
@MrToxicSkittle4 ай бұрын
@@SeasideGarageI see! Imagine if it had a mechanism alter the compression automatally for each cycle. Like increasing compression at just the right time to cause ignition when wanted! In theory I guess you could do this if had an incresibly fast hand and constantly turned the compression back and forth at just the right time!
@ShinyUmbreon7654 ай бұрын
@@MrToxicSkittlesounds like an arduino might be able to do that. Sounds funny but sometimes making it more complex makes it simpler. Not sure how you could measure how much compression is necessary but increasing compression with a stepper motor right at top dead center could work. Maybe even have it automatically advance/retard based on rpm.
@MrToxicSkittle4 ай бұрын
@@ShinyUmbreon765 yes, exactly! In theory, if it had enough travel, you would be able to increase the displacement during the intake stroke and increase compression on the compression/exhaust stroke, meaning it would work almost like a supercharger/turbocharger. Or an opposed piston engine :)
@paradiselost99463 ай бұрын
@@ShinyUmbreon765 that stepper motor has to have enough power to overcome compression and combustion... yet act rapidly enough to do anything useful? kiss... standard glowplug with PWM and run it as a "hot bulb"... or is that too simple?
@impuls604 ай бұрын
Mayby you could make a smaller run a-long wheel for it to gear it down? Seems like it lacks torque to rev higher.
@ShinyUmbreon7654 ай бұрын
Decreasing the wheel size decreases the gear reduction in the same proportion because the wheel is being used as a big gear by the little roller.
@Mekaniskidiot4 ай бұрын
Ælsker det du laver mand : D Jeg har også en veteranknallert, en Skylon 56 bygget i Randers og Aarhus i 50erne. Hvad for nogle har du af knallerter?
@SeasideGarage4 ай бұрын
Tak! :) jeg har mange! 13 tror jeg for tiden... ;)
@ferguscosgrave75104 ай бұрын
Nixe
@billyporter21954 ай бұрын
It’s strange how my memory as young teenager makes me believe that mopeds were always reliable, clearly ‘false memory syndrome ‘ good luck
@SeasideGarage4 ай бұрын
Yea... not a lohmann... :P
@hhansen35514 ай бұрын
Is the transmissionen of power to the wheel kind of like a Velo Solex?
@SeasideGarage4 ай бұрын
yes
@ShinyUmbreon7654 ай бұрын
Velosolex had abrasive grit while this has little spline that dig into the tire. Same idea though!
@MrYrodz4 ай бұрын
How much power does it actually produce when properly tuned and how much fuel does it consume? How effective is it?
@SeasideGarage4 ай бұрын
0.8hp... should give 100km/l
@kennethjrgensen20874 ай бұрын
Hvilken Skil slagnøgle bruge du? 3285? Har du nogle link/koder hvor vi støtter dig når man køber Skil?
@SeasideGarage4 ай бұрын
Ja den store jeg har er 3285.... den er virkelig imponerende. det er muligt at købe på HmwTrading (.dk) med koden seasidegarage (alt med småt) Det giver noget rabat- skil støtter mig direkte.
@paradiselost99463 ай бұрын
two stroke is begging for a tuned pipe... now that would be something! shame you dont show the cylinder and transfers but the flat top piston suggests schnuerle, so a pipe will work... anyway, this maynt exactly be ... what you want to do, but thinking.... you can get nice little 12v heaters now... diesel glowplugs... maybe (eek!) drill and tap a hole in the head and throw in a glowplug, then run it PWM as a "hot bulb"? could possibly get away with real diesel then. get it to burn properly and youre making power then! same time, me being me would throw a chamber around the exhaust pipe, and preheat the fuel as well... little BLDC mounted on the cank somehow for power...