what all your moped vlogs show is how difficult it was post WW2 to get transport and how people had to make do with what they could get or what they had.
Wow that's an impressive change with a different mix of fuel and a lot less smoke. It's like watching a eccentric inventor in a shed at times lol , I mean that in a good way of course .
In the early 1960’s I used to have model boats and aircraft that used small “diesel” engines. The basic home made fuel was 33% each of ether/ car engine oil/ paraffin ( kerosene). Ether was available from Pharmacies but they only supplied it if you took a container with the oil in it so you could not use the ether for nefarious purposes.
Fantastic! One note of caution - castor oil is not really compatible with mineral oil and you might get some problems of "gumming up" where the castor oil comes into contact with the residual mineral 2 stroke oil. As the castor oil is for lubrication rather than fuel, I would take it out of the mix and use 2 stroke oil instead at no more than 5%
Hi there. You don't need 1/3 of oil for the engine, IF the engine has roller bearings and ball bearings. The older model engines had glide bearings, so they needed it. Also, Castor oil are not needed, Castor oil is used for semi diesel model engines, where Methanol is used. Because regular oil doesn't mix with Methanol. A good regular 2 stroke oil will do, at a much lower ratio, and it will run better.
I remember the old 2 stroke model engines.they called it glo fuel. A battery was hooked up to heat the glow plug, then they self sustained when running.i think the model club used to bulk mix fuel. Don't know what was in it
Hi! Nice to see you try this fuel mixture. The mixture you used is known as an 'English blend' if I'm not mistaken, 1/3 of each part. To increase power you could try to use a little less oil, (25%) less ether (20-25%) and some more kerosine (50-55%) as kerosine has a higher caloric value and should therefore develop more power. It will run hotter though! As an experiment you could try to use diesel instead of kerosine, but that would be uncharted territory for me. Diesel has a slightly lower caloric value too, but it's a little more oily which should help with lubrication.
Mind you, often mixtures of different fuels start "sacking" a bit after they stand still for a while. Lighter elements drift to the top, heavier ones to the bottom, so watch out when you are storing this fuel for longer times. No idea if this is a problem in this specific case, but for other mixtures it holds true to some extent. Wouldn't want you blowing yourself up by accident! By the way I absolutely love this thing! Wish I had one too... Maybe one day! Have a lot of fun! 🙂
I wonder what your neighbours think when they see you on or in your latest fun project. Where I live you would definitely be the local Eccentric. The cool dude with the machinery😎.
Very good to see that you got it running and driving. There are not a lot lohman diesel engines around anymore so im glad there are peoplelike you that still mantain these little engines. In Austria they were build under the name Junior diesel which are pretty much the same. But I heard the best mix is petrol (lamp oil) and two stroke oil in a fuel ratio of 1:25. That should get you to about 35kmh if your compression is good. I hope we will see another video on the lohmann diesel. (Sorry if my english is bad)
I dont exacly know how fast it should go. But on UA-cam there is a Channel called fahrradhilfsmotor that has a lohmann diesel and he said he uses Petroleum (lamp oil) and 2 stroke oil 1:25 fuel ratio and it seems to work fantastic since his bike goes up to 30-35kmh! So i think it is at least worth a try.
Yes it is unfortunate that this technology was not explored further when the laws would allow for it. Here in Canada, we can't buy small diesel engines, so it would be impossible to market something like this here now.
Congratulations Seppo on getting the Lohman running well 👍👍👍 In your earlier videos was thinking that the model aircraft diesel fuel might work better but it can be difficult to find here in the UK and would probably be more difficult to find in Denmark.
Your Danish, you could go to Greenland or Iceland to get whale oil. ? they say nothing is finer than whale oil. I see the roads in Denmark are the same as N.E. Scotland. narrow and potholed.
Quite a difference with a change of fuel, hopefully it's not causing the piston to melt or anything though, experimenting with different fuels can be problematic for some engines... :S
It really was acting like a 2 stroke with it often 4 stroking and then smoothing out and gaining power as it 2 stroked properly. Having to juggle compression and the amount of fuel must be a nightmare. Check your rear wheel for roundness. Maybe the wheel the tyre or both. How did the viscosity of your new fuel compare to the old stuff? Thicker or thinner? That might affect the dripper.
Great! Well done! What a better fuel mixture can do. You must keep the fuel greasy but the fuel itself must be easy to combust. Just gasoline (benzine) with two stroke oil must do the job. And may be you need to add a lead substitute as well (?).
There is a saying Seppo , “ If wishes were horses , beggars would ride” I think updated version is “ beggars would get a 2 stroke moped “ with kerosene Ofc 😂👌🏻
First press castor oil has very good lubrication properties, and at 33% it increases compression quite a bit. You could drop the oil down to 20% and still have excellent lubricity with a bit more kero for more power. Not that any 18cc engine will tear your arms off, might hold a bit better up the hills. Good to see it running, don't see them in Oz.
I think the engine was designed to use kerosene mixed with oil instead of modern diesel fuel, Diesel has higher flash point and higher cetane index, the lower flash point and lower cetane of kerosene will self ignite better with lower compression ratio, you increase the compression until it ignites and if you increase compression higher it will knock, it's a matter to lower compression until you find the sweet spot that will change with ambient and engine temperature
That was like watching Barry Sheene on his dream machine 😅. Googling hazardous chemicals is never a good idea. It's all about octane numbers, like the Lancia Delta S4 ran on toluene because it has an octane number of about 125, stopping it pre detonating in the twin charge system. I'm guessing this 2 stroke engine needs something in between regular petrol and diesel?
yet honda was running their little rc116 and the like on as low as 70 octane... by revving the hell out of them. the bigger the cylinder, the slower the RPM, the more likely you are to get detonation. compression is only half the story.
love this series on this interesting engine if it helps my grandfad had a model boat engine which was 15cc and the fuel for that was 1 part ether 1 part castor oil and 1 part parrifin which is probably similar to what ur trying in this vid but maybe the diff types may help u
Amasing work, you are probably the one who has driven a Lohman the longest in 65 years. The kerosene used in those days was caled "Motor kerosene" (motorfotogen) here in Sweden (there was also lighting kerosene for lamps and stowes and of course jet kerosene), a replacement for that (used by people with glow bulb engines) is a mixture of diesel and gasoline. you could try that mixture istead of the kerosene part, 50% 98 oktane gasoline and the rest disel to start whit. I dont think you need 1/4 castor oil, castor oil does not contribyte wery much to the combustion. Worth noting is that heated castor oil forms a tarnish that might clog the engine if not washed away after use. I thing that a oxygen donor would inprowe the performance but i also realise that that could give your authoroties an anxiety disorder.
Would an expansion pipe help with the power over that stock spring loaded exhaust? There's formulas to calculate expansion pipe construction for gas 2 strokes, but I have no idea if that would work for a variable compression diesel
I am after a wing and bumper for a Mazda 323F Estoril 1997. Thats all I need, I can wait for the bonnet it is not too bad! Just gutted that it happened!
If you still have some predetonations, you could try to use slightly less cetane booster or more starter fluid (ether has a crazy high octane number). In principle, you're running the moped on a mixture of gasoline and diesel now. Cetane number and octane number are essentially on the opposite ends of a spectrum. Want less predetonation/knock -> mix in more high octane fuel. Want better self-ignition -> increase cetane number.
coming up next... a pressure cooker, a length of copper pipe, and "cracked" plastic. really, thats what its really supposed to run on... whatever you can get hold of. and making it yourself from rubbish is the ultimate "post war apocalypse" scenario. i wonder how it would boogie with a tuned pipe? considering its only 18cc, and definitely not "tweaked" for performance... it goes amazingly well.
I too enjoy cycling through the calm and serene countryside with the sound of a chainsaw following me wherever I go...
@@lerelo Yes.. E bikes are for girls.. 🙂
Its soo calming!
what all your moped vlogs show is how difficult it was post WW2 to get transport and how people had to make do with what they could get or what they had.
Wow that's an impressive change with a different mix of fuel and a lot less smoke. It's like watching a eccentric inventor in a shed at times lol , I mean that in a good way of course .
Must stink like an old used oil burner tho
Great to see it running properly now, with the new fuel
In the early 1960’s I used to have model boats and aircraft that used small “diesel” engines. The basic home made fuel was 33% each of ether/ car engine oil/ paraffin ( kerosene). Ether was available from Pharmacies but they only supplied it if you took a container with the oil in it so you could not use the ether for nefarious purposes.
I did mention the contact for the fuel recipe when you had your last lohman. I glad you’ve sorted it out. 👍🏻
Yea its been mentioned quite a few times! Thanks! :)
Fantastic! One note of caution - castor oil is not really compatible with mineral oil and you might get some problems of "gumming up" where the castor oil comes into contact with the residual mineral 2 stroke oil. As the castor oil is for lubrication rather than fuel, I would take it out of the mix and use 2 stroke oil instead at no more than 5%
Hi there. You don't need 1/3 of oil for the engine, IF the engine has roller bearings and ball bearings. The older model engines had glide bearings, so they needed it. Also, Castor oil are not needed, Castor oil is used for semi diesel model engines, where Methanol is used. Because regular oil doesn't mix with Methanol. A good regular 2 stroke oil will do, at a much lower ratio, and it will run better.
Congratulations! Very impressive - Valentino Rossi will be looking over his shoulder!
I remember the old 2 stroke model engines.they called it glo fuel. A battery was hooked up to heat the glow plug, then they self sustained when running.i think the model club used to bulk mix fuel. Don't know what was in it
Chasing the sweetspot sounds like a lot of fun!
Hi! Nice to see you try this fuel mixture. The mixture you used is known as an 'English blend' if I'm not mistaken, 1/3 of each part. To increase power you could try to use a little less oil, (25%) less ether (20-25%) and some more kerosine (50-55%) as kerosine has a higher caloric value and should therefore develop more power. It will run hotter though! As an experiment you could try to use diesel instead of kerosine, but that would be uncharted territory for me. Diesel has a slightly lower caloric value too, but it's a little more oily which should help with lubrication.
Congratulations on getting the Lohmann to run so well.
What fun a new lohmann video, and what an impressive difference with the new fuel.
Mind you, often mixtures of different fuels start "sacking" a bit after they stand still for a while. Lighter elements drift to the top, heavier ones to the bottom, so watch out when you are storing this fuel for longer times. No idea if this is a problem in this specific case, but for other mixtures it holds true to some extent. Wouldn't want you blowing yourself up by accident!
By the way I absolutely love this thing! Wish I had one too... Maybe one day!
Have a lot of fun! 🙂
Just shake the whole bike vigorously before starting your journey 😂
@@DadGamingLtd I think the bike does that anyway, it's a design feature. 🙂
Fabulous, I do like an old moped.
I wonder what your neighbours think when they see you on or in your latest fun project. Where I live you would definitely be the local Eccentric. The cool dude with the machinery😎.
It leaves a nice smoke trail, too!
Very good to see that you got it running and driving. There are not a lot lohman diesel engines around anymore so im glad there are peoplelike you that still mantain these little engines. In Austria they were build under the name Junior diesel which are pretty much the same. But I heard the best mix is petrol (lamp oil) and two stroke oil in a fuel ratio of 1:25. That should get you to about 35kmh if your compression is good. I hope we will see another video on the lohmann diesel. (Sorry if my english is bad)
Found a manual stating 25kmt as a top speed... would like to achive that!
I dont exacly know how fast it should go. But on UA-cam there is a Channel called fahrradhilfsmotor that has a lohmann diesel and he said he uses Petroleum (lamp oil) and 2 stroke oil 1:25 fuel ratio and it seems to work fantastic since his bike goes up to 30-35kmh! So i think it is at least worth a try.
That looks fun!
Yes it is unfortunate that this technology was not explored further when the laws would allow for it. Here in Canada, we can't buy small diesel engines, so it would be impossible to market something like this here now.
I put a little gasoline in diesel with two stroke oil . Start faster in cold weather.
Nice channel 👍
I definitely had a feeling model fuel would be the ticket! Nice to see it up and running Well done! 🍻
Great idea for a series- pop over to Norway and ride it to the Arctic circle!😀It is great to see it run- well done.
If I had time... Id do it!
Congratulations Seppo on getting the Lohman running well 👍👍👍 In your earlier videos was thinking that the model aircraft diesel fuel might work better but it can be difficult to find here in the UK and would probably be more difficult to find in Denmark.
Careful! I use starting fluid as an oil cutter when cleaning parts. Its possible that lubrication is less than ideal.
Your Danish, you could go to Greenland or Iceland to get whale oil. ? they say nothing is finer than whale oil.
I see the roads in Denmark are the same as N.E. Scotland. narrow and potholed.
would be some kind of renewable energy
Wow it sund much better.
What a BEAST!
Quite a difference with a change of fuel, hopefully it's not causing the piston to melt or anything though, experimenting with different fuels can be problematic for some engines... :S
yes.. the risk is part of the fun of experimenting with this.. worst that can happen is that I get to take it apart again! :D
It really was acting like a 2 stroke with it often 4 stroking and then smoothing out and gaining power as it 2 stroked properly. Having to juggle compression and the amount of fuel must be a nightmare. Check your rear wheel for roundness. Maybe the wheel the tyre or both. How did the viscosity of your new fuel compare to the old stuff? Thicker or thinner? That might affect the dripper.
Nice Sound
Great! Well done! What a better fuel mixture can do. You must keep the fuel greasy but the fuel itself must be easy to combust. Just gasoline (benzine) with two stroke oil must do the job. And may be you need to add a lead substitute as well (?).
Interesting thanks
Running like a champion, well done.
✌️💚🇬🇧
There is a saying Seppo , “ If wishes were horses , beggars would ride” I think updated version is “ beggars would get a 2 stroke moped “ with kerosene Ofc 😂👌🏻
Guess you live in the danish alps ..., is it where the 120m Mountain is located?
Not far from here!
First press castor oil has very good lubrication properties, and at 33% it increases compression quite a bit. You could drop the oil down to 20% and still have excellent lubricity with a bit more kero for more power. Not that any 18cc engine will tear your arms off, might hold a bit better up the hills. Good to see it running, don't see them in Oz.
The most minimal version of "fuck it...we ridin"
Denne her har jeg ventet på 😍😍👌
i really like it
I think that the key is to have a fuel which vaporises and burns quickly, smoke due to unburned fuel = wasted power.
I think the engine was designed to use kerosene mixed with oil instead of modern diesel fuel, Diesel has higher flash point and higher cetane index, the lower flash point and lower cetane of kerosene will self ignite better with lower compression ratio, you increase the compression until it ignites and if you increase compression higher it will knock, it's a matter to lower compression until you find the sweet spot that will change with ambient and engine temperature
That was like watching Barry Sheene on his dream machine 😅. Googling hazardous chemicals is never a good idea. It's all about octane numbers, like the Lancia Delta S4 ran on toluene because it has an octane number of about 125, stopping it pre detonating in the twin charge system. I'm guessing this 2 stroke engine needs something in between regular petrol and diesel?
yet honda was running their little rc116 and the like on as low as 70 octane... by revving the hell out of them.
the bigger the cylinder, the slower the RPM, the more likely you are to get detonation. compression is only half the story.
Love the fly by! 😂
It sounds cool, going downhill! 😎
speeeeed and power!
love this series on this interesting engine if it helps my grandfad had a model boat engine which was 15cc and the fuel for that was 1 part ether 1 part castor oil and 1 part parrifin which is probably similar to what ur trying in this vid but maybe the diff types may help u
Amasing work, you are probably the one who has driven a Lohman the longest in 65 years. The kerosene used in those days was caled "Motor kerosene" (motorfotogen) here in Sweden (there was also lighting kerosene for lamps and stowes and of course jet kerosene), a replacement for that (used by people with glow bulb engines) is a mixture of diesel and gasoline. you could try that mixture istead of the kerosene part, 50% 98 oktane gasoline and the rest disel to start whit. I dont think you need 1/4 castor oil, castor oil does not contribyte wery much to the combustion. Worth noting is that heated castor oil forms a tarnish that might clog the engine if not washed away after use. I thing that a oxygen donor would inprowe the performance but i also realise that that could give your authoroties an anxiety disorder.
I probably am! :D
As fun as these things are I wouldn't want to rely off one for transportation it kinda makes me happy for e-bikes
Would an expansion pipe help with the power over that stock spring loaded exhaust? There's formulas to calculate expansion pipe construction for gas 2 strokes, but I have no idea if that would work for a variable compression diesel
Cool!
I am after a wing and bumper for a Mazda 323F Estoril 1997. Thats all I need, I can wait for the bonnet it is not too bad! Just gutted that it happened!
Main thing is you are ok... :)
@@SeasideGarage
Oh my friend, only my pride is damaged...
Thanks!
Thanks!
👍😎
Fuel experiments yay! time to turn up the drip rate and try nitro-methane! 😂
Who’s Sel and why do you want them to die?
Wow, such impressive performance for such a tiny engine! How often do you have to change the oil?
It sounds angry :D
forget that.. it varies comp for eeoght of the oil w50 w10.. etc
Maybe you need to readjust the fuel dripper now
We need a speedo
Fantastic!
I want a diesel moped 😂. Does the moped need MOT, tax and insurance in Denmark?
If you still have some predetonations, you could try to use slightly less cetane booster or more starter fluid (ether has a crazy high octane number). In principle, you're running the moped on a mixture of gasoline and diesel now. Cetane number and octane number are essentially on the opposite ends of a spectrum. Want less predetonation/knock -> mix in more high octane fuel. Want better self-ignition -> increase cetane number.
Prøv at kontakt modelflyve klubber der kan man sommetider købe brændstof færdigblandet det kan man iværtfald i herning
sooooooo
nitro methane when? :P
coming up next...
a pressure cooker, a length of copper pipe, and "cracked" plastic.
really, thats what its really supposed to run on... whatever you can get hold of. and making it yourself from rubbish is the ultimate "post war apocalypse" scenario.
i wonder how it would boogie with a tuned pipe?
considering its only 18cc, and definitely not "tweaked" for performance... it goes amazingly well.
it is a horrible world.... people got bombed today
@5:17 Awfully calm for a man being chased be Leatherface!
hah!