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Im trying to get the m12b engine im think about trying to install a 3d printed oil splasher for the crank case and also do all the repairs that are needed from factory like the crank bearings do you think i should buy it or is there a cheaper better alternative but i do like the design of it

I built a couple of these when I was a kid with 8 track tape player parts. They weren’t hit and miss but had a slide lever throttle control. This brings back memories from the 70s and my early hobby days.

Hello! I'm a new subscriber. This and the preceding video are terrific. Your videography and explanations are really terrific and I have enjoyed them a great deal. Would you please put links at the ends of the videos to the next step of these builds? It will make it a bit easier for some of us viewers while scrolling through your other videos. Thanks in advance for considering this request.

I have just assembled my HM-01 and have no compression, it blows back through the carburettor / throttle. can you give me any advice? done a test with the carburettor removed and put finger over the opening and I get compression. So it’s the inlet value I’m having problems with

I have been debating on weather or not to buy one of these. You may have changed my mind. I'll have to go back and watch part 1. Did it not come with instructions?

Mine makes a tremendous noise and fire comes out the end. I suggest that you add more water and wait several seconds for the acetylene to build up to the proper concentration. There is a knack to it, as in most things in life!

Any new projects in the works?

Hello, I ask you to provide the technical data of the camshaft of this engine. The main thing is that I am interested in the location of the camshaft cams - (camber). Sincerely, Valery.

Hello, thank you for a very technically competent and interesting video on your channel. These videos are very useful for those who are engaged in the construction of such engines. I also want to build a primitive, four-stroke motor. Please, if you have the desire and opportunity to report cam camber (degrees) on such small engines. I wish you good health and further creative success. Sincerely, Valery.

Could you get rid of that distracting lamp in the middle of your work.

Hi, We have this engine too, but we hear you say, that you mix fuel for the engine-- what is the mix you use??? We would like to know!!!

I know that I am saying this a few months late but from what I've seen you still deserve to be told, Congratulations.

Found o&r crop sprayer at boot fair. Beautifully engineered, big model aero engine really. They put the engine on loads of different stuff.

Did you lube the valve guides and the rocker arms before running ? I got the bigger size Holt engine & am going to sell it. It is 90% done. I have too many engines. Also my fingers are bad now.

If you need a set of drawings for that engine, let me know. I own several Tochtrop Economy kits

Great show! Thank you.

Hola se podría hacer un modelo de la culata del motor M12B par una investigación

Not a Hot Bulb Engine at all.

Where have you got to sir? I really miss unwinding whilst watching your videos! Please come back soon. 😿😿

th-cam.com/video/E88I8lm6vNc/w-d-xo.htmlsi=yVRY-V1X02ttVF5B Maybe this video can help how its look working

Missing your fresh uploads!

Do u live in Indiana

Especially the lamp with turning wheels!

To much distracting clutter on wall and around engine.

The rubber band is noisy

Nice tweaks, also, where did you get those wheels? Love that cart

You need to wait more than 2 seconds to fire. The Bangsite needs time to dissolve prior to firing. My father has one from his youth, exactly like this one, and we played with it every Independence Day as a kid.

Give it 15 seconds or so to develop enough gas before you hit the igniter.

That slot is for 3 or 4 ball bearings.

Very informative channel. Got my Enjomor running. But i picked up a cheap blue chinese engine ran great for a day. Then it quit. Will run for about 20 seconds and quit. Just can't figure it out. Spark is hot, fuel is good. Timing is just above TDC. Any thoughts? Thanks

the spark is made when the points break contact just like in cars the spark is created by the lobe not the flat when the points are touching

Does it have any torque?

Sterling wants $390 for the kit and $400 for fully assembled ready to run. With 15% coupon, $331 kit or $340 RTR. For the trivial difference why would you get the kit instead of RTR?

Wow! How much does that engine cost?

What mixture of petrol and oil is required? thank you very much

Thanks for sharing what about uses a heated Ellamut out of an old waffle Maker. Thanks for the close up love the winch. Thank you.

I am a new viewer to model engines, and a machinist who is an old gear head, and this series of videos has me wanting an engine now. Great video!

That is cool! I like the governor for sure

Not bad!

Bonjour, I have juste received my H73 and unfortunately, despite hours of tests, I haven't been able to start it. I have a spark and a little compression (I changed the O'ring), more or less similar to my other hit and miss Microcosm engines. Il will buy another gas (using Essence F and unleaded 98 currently) but fear it won't change anything... Could your give me as an indication how much you open the needle valve ? 1/4, 1/2... more ? If the engine starts then stops after a few seconds (that happends on my other engines) should I open or close it a little ? Thnk you in advance for your advice, everything you say in your videos is relevant because I experience the same things. Amicalement, Raphaël

You give a whole nother dimension to "small engine mechanic". Thanks for posting!

Where do I find this model

Where do I find this model

G'day mate, really enjoyed the video, is their another with it run in? Cheers, RiskY

Sweet

It is bewildering, Add oil or not? With rubber o-rings for rings, engine oil in the combustion chamber is assured leading to smoking exhaust and fouled plugs. I suspect the vendor is concerned about oil leakage complaints. My idea, put oil in swish it around or run for a few minutes, then DRAIN the oil leaving the residue as lube

Bonjour, Latest information given on my video : "The first copper-plated piston is a pump to power the engine (kind of volumetric compressor) and the 2nd is the engine with a slide valve which serves as an intake/exhaust valve, and the tank acts as a carburetor (air-fuel mixture)", This last point explains why my inlet pipe was not cut and I use a special gasoline called in France "essence F" as it accepts different ones. That does not explain where this e,gine come from and the lack of compression without ignition... Hit & Miss...tery 😁 Amicalement, Raphaël

Superb camera work, my friend. But time consuming to do, isn't it! Well done

were do you keep finding all the cool engines you have?

don't repaint the engine. just clean it, touch it up where necessary with colour matched paint. great video