Recent content by stef110

Its have been an frustrating week. Last weekend i made the piston ring and connection rod and i was able to do a first test run. But nothing happens... I had some old fuel so i didn't trust it and ordered some fresh fuel. Also no result. What i figured out is that my valves where not sealing...

This evening i machined the piston, actually a fun an easy to machine part. Started on the lathe turning the outside diameter to nice fit in the cylinder. Then drilled and reamed the hole where the lock pin will be fitted to connect the piston arm. After that I cnc milled the inside out. Using...

I bought the plans like 1,5 month ago then the website also didn't work every day. Once it worked i ordered it and nicely received the drawings a few days later. Im already looking for new plans now but also cant get on the website. @bluejets i was looking at these spark plugs and ignition...

My intention is to first try to let the engine run on a glowplug (i have bought the OS 4 stroke glow plug's) If it works then i want to try let it run on a spark plug. Made the crank stump this week and machined the pullys for the belt to size. I forgot to make pictures of these jobs. Today...

super nice build!

@jos i send you a PM This weekend founded some time to machine the crankshaft. Took longer then i thought. Machining the shaft where the piston connection rod is going on took a while. My lathe wasn't happy with the out balanced piece of material. Im really happy with the finished part. Next...

@bluejets It was a quick post so let me explain a little now. What you said about the circlip its true i re watched the drawing and there is a little chamber to lock the clip into will make them so make sure it stays on thanks for the notice. The camshaft i made from stainless steel it was the...

Tnx bluejets for the info. Today did a lot of progress, valves are done including the springs underneath them and it seems to fit and seal well. Also made the crankshaft and the bearing blocks to support the crankshaft. stef

I will find an harder cast iron for the piston ring then. This evening i finished my second valve, also the valve springs came in today. The radius on the valve is done with a round lathe tool insert (don't know the exact English word for the tool) Planing on making the piston this weekend. stef

Today i machined my first ever valve, i think it doesn't look to bad. Stef

Today i machined the back plate of the motor, and made the cylinder liner out of cast iron (gg25). My question till stays what material for the piston ring? can i also use the same cast iron for this? stef

This weekend i started on the cylinder head on the lathe. Today i did some cnc milling on it. onlything left to do is drill the hole for the glowplug. but it needs to be under an angle and there for i first need to buy some new tools. stef

yes i still have the engine, maybe i can have a look at it later. someone in the past also pointed me on the CDI module might be an issue. stef

Tnx im enjoying the build so far. I have a small question about the cylinder and piston. In the building plan they talk about a ductile graphite iron cylinder liner. And as a piston ring they recommend a st60 material. As a left over from my Debbie build i have a piece of GG25 cast iron left...

Hello engine builders, A few years ago i made the 2 stroke debbie engine from Jan Ridder but never get it to work. This project: https://www.homemodelenginemachinist.com/threads/2-stroke-debbie.24576/ This weekend i started a new project. Im going to try to build a 4 stoke engine. I just...