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Status after 26 months of searching for information, design and realization. About 75% done. Hopefully I can finish this motor in 2025.

Testing with some cold blueing chemicals to stain the steel, brass and pewter crankcase covers. Soft solder joints do no get very dark, silver brazed joint turn dark.

Jos, I bought my last (was also my first :D) batch of silver solder at Bengs-modellbau. I bought the 0.5 and 1 mm thickness which are fine for small parts and details. For soldering these 3 mm plates, it would be better to use 1.5 mm to get some more volume in the fillet. For now I use two...

Started with the sheet metal, 3mm and 0.75 mm (1/8" and 0.03"). Silver brazed together to form the outer hull of the engine.

Here is a schematic on how understand that Mr. Hansen controls amount of diesel injected and start of the injection. All deduced from his YouTube movies. Both amount and timing are coupled but it seems to work for a low and fixed RPM engine. For a high RPM engine that needs to rev up and down...

I'm also looking into building a diesel engine like the one of mr. Find Hansen. If you carefully follow his youtube videos, he gives away some numbers. His green engine has a bore of 20 mm and a stroke of 40 mm which compresses into a head clearance (diameter 20 mm) of 1 mm and a combustion...

@Roger B Thank you for all your information. This will help a lot in building my own injector and pump. I made a metric calculation sheet for calculating several important parameters. When I put in your numbers, all seems to match except for the pump stroke. You say "say a 2mm plunger and...

Thank you for sharing your designs. For my next engine I want to build a Diesel engine like those of Mr Find Hansen. I'm currently watching his YouTube movies to get some critical numbers e.g. bore, stroke, flywheel diameter and weight. Once that is all known, I will make a preliminary design...

Thanks for all your answers. My 2VD5 is now running on the first cylinder. Next I will finalize the 2nd cylinder and then I will be able to test how he is running on the wasted spark scheme.

First time running on one cylinder. RPM is way too high due to an unbalanced carburetor but that can be tuned. Only running short period of time since cooling and lubrication is not yet in place

Another important milestone achieved and more confidence that the engine will start running. The 1st cylinder has compression. 1st video: crankshaft rotates properly when a valve is held open. 2nd video: piston springs back as a result of the compression with closed valves. 3rd video...

I'm not in the mood to continue designing technical matters for a while. Then just work on the appearance. Standard DIN 934 nuts and washers are not correct in height-width ratio for pre-war nuts. All nuts and washers that come into view are made of hexagonal brass in the correct proportions.

Turning the pushrods down from 4 mm (1/6") tot 3 mm (1/8") diameter over a length of 75 mm (3"). Used the technique Joe Pie showed on YouTube, using a drilled and reamed hole in one of the bronze fingers of the following rest to serve as a guide. Note: use loads of oil.

Determining the cam shape step by step. Valve lift is still a little bit too big and agressive, but first insights are gained.

Great engine. Looking forward to the first time running. Are you running it without piston rings? I know engines (also one of my own) that run without rings, but there the pistons have a very tight fit in the cylinders (0.02 mm or less). This dictates that the thermal expansion of the piston...

Hi, In order to reduce potential issues with corrosion due to various materials (aluminium, steel, brass), I was thinking on using oil instead of water/glycol to cool my model engine. According to Wikipedia, there are advantages and drawbacks on using oil. Wikipedia oil cooling I my...

Indeed, otherwise I was not able to hold it with enough clearance for the saw mandrel. Took me a while to get out of that oops situation. Soft solder worked very well. Another option was to first braze the rod to the big end and then hold it by the rod.

Connection rod with bronze bearings and a stainless steel rod silver brazed together. Piston has a replacable crown to experiment with different crowns e.g. material, shape and dimensions.

7075 aluminium piston with commercial cast iron rings. 1st time I use aluminium in stead of cast iron. Lets see how it works.

Since it is now becoming relative (top) heavy and all the hours invested, I took some time to build a temporary stand for the engine. This to avoid damage during build, transport and exhibition at shows. On the base is a photo that I found in a brochure of this engine. Once the engine is...