The home-made 175cc two-stroke engine is started and runs pretty well!

Our self-built "two-stroke engine" project, built only with a normal lathe and milling machine without any castings or CNC technology, is finished: After the lubrication and cooling system have been built, it is started. It runs very nicely; 8,000 rpm are reached. Higher speeds are possible. We will soon brake it under load.

[@Logan880121]

Very happy to see your success, congrats. Now make a V12 just like this!

[@prof-rieg]

Thanks a lot - but a V12 is beyond my scope.

[@alexanderscholz8855]

Super Video 👍!! Ist der Motor kalt, gib ihm 5½, Scherz! Great as always 😎‼️ Enjoy and thank you for sharing 🤗🤗

[@prof-rieg]

Danke bestens!

[@TrPrecisionMachining]

very very good job LSCAD

[@prof-rieg]

Thank you very much!

[@mauserkk98]

Runs lovely, but it would with that much quality engineering.

[@prof-rieg]

That is a very kind response of you - many thanks!

[@thomasstover6272]

Excellent engineering and craftsmanship! I am not surprised, with your history, but what a delight to see it run! Congratulations!

[@prof-rieg]

Thank you very much - very kind of you!

[@thomasstover6272]

@@prof-rieg It is likely that you do not know how inspired and challenged I was by your series on gear hobbing. I’d invite you to look at a video on my channel about hobbing a helical gear by the Pfauter method, on a shop-built hobbing machine…inspired by you! Thanks! th-cam.com/video/5M4QMGYKkEE/w-d-xo.htmlsi=sgTP39GyAzz7IKWb

[@enginediy_team]

nice engine

[@prof-rieg]

Thank you!

[@alexanderscholz8855]

I forgot, this is perfect Mix of Steel&Food! First fine Work and than good Food. That's a Men's World! Awesome as always 😎‼️

[@prof-rieg]

Thank you very much for your kind response. And that's a good idea: Steel & Meal!

[@nerd1000ify]

it idles very smoothly and nicely for a 2-stroke, so the port layout must be quite effective at clearing the exhaust from the cylinder even when the engine is running slow. You must be very pleased!
It seems that you could simplify the engine a great deal by mixing the oil with the fuel, given that it uses a carburettor anyway. Obviously this isn't a perfect solution in many respects (too much oil is used at low speed) but if you intend to power a vehicle of some kind with it the simplicity might be desirable.

[@prof-rieg]

Thank you very much for your response! Regarding the fuel-oil-mixture you are quite right.

[@jimsvideos7201]

Congratulations! Happy holidays!

[@prof-rieg]

Thank you! Merry X-mas!

[@wolfgang7513]

Chapeau , alles selbst gemacht und funktioniert prächtig ! Glückwunsch zu diesem schön nostalgisch klingendem Wunderwerk ! Klingt fast wie meine ETZ 250. Frohes Fest und alles Gute fürs neue Jahr, Herr Professor Rieg !

[@prof-rieg]

Vielen Dank - sehr freundlich von Ihnen! Ebenfalls frohe Weihnachten und einen guten Rutsch!

[@colincunningham1902]

Well done Professor! Both the engineering AND the meal. I don't think I could complement any further! Enjoy them both. Regards from Townsville.

[@prof-rieg]

Thanks a lot! Greetings to Townsville!

[@herbertemmerich4819]

Einfach wieder klasse.

[@prof-rieg]

Besten Dank!

[@joachimhohenstein]

Der Motor schnurrt wie ein Kätzchen, fehlt nur noch ein passender Motorradrahmen.

[@prof-rieg]

Vielen Dank - ja, mal schauen...

[@kcraig51]

I guess it's time to start on the bike frame??

[@prof-rieg]

Well, that could be a nice idea...

[@bigteninch58]

Ich schätze die Leistungsausbeute auf etwa 20PS 💪👍

[@prof-rieg]

Ja, das koennte hinkommen, da es fast derselbe Hubraum pro Zylinder wie bei der Dreizylinder H1 ist, und die hat 60 PS.