A story about a vacuum engine (flame licker)

[hartmutbehrendt]

Hei Johannes, I am waiting now for your video or the information when your engine is working. Cheers Hartmut

[eduardyna]

do you sell this? can u tell me where i can buy one?

[hartmutbehrendt]

No, sorry, I never will sell this engine, which is my only work in building machines. It is nowhere available, only the plan can be bought, see video. Cheers Hartmut

[megamark55]

have you the piston also treated with epoxye ,greetings Marc

[hartmutbehrendt]

Hello Mark, yes, the piston is covered with carbon fibres using epoxy resin. Cheers Hartmut

[megamark55]

@megamark55 my engine is finisht

[WorldStove]

lovely as both art and engineering!

[catforce]

Echt spitze

[SilentRecordStudios]

Eine sehr schöne Maschine muss ich sagen! Würde mir auch gefallen! Respekt

[SWINGREGORY]

GREAT

[AgentOrange1969]

Hervorragend für das Erstlings Werk !!

Spitzenmäßig !!

[hartmutbehrendt]

Hello, opposite through the earth, the secret is there is no exhaust valve for releasing the compressed gas, which are very noisy in some cases. To release the gases, there is a little groove in the lower part of the cylinder where the compressed gases (vaccum is not total)can bypass the piston. Furthermore there is a powerfull spring in form of a piece of straight steel wire which presses the valve lever against the valve excenter, so there is no mechanical noise at all. Cheers, Hartmut

[mechfeist15]

how did you get it so quiet?

[hartmutbehrendt]

Hello, I posted my answer as comment instead as answer, sorry, Hartmut

[hartmutbehrendt]

Hello Dave, unfortunable I deleted your comment, sorry. You wrote:

Thanks for the explanation, very informative indeed. The experts always see what is important in the details. I went to the handwerk-technik websitet o purchase one but it is in german only.What is the price for an engine like that ? Dave

[hartmutbehrendt]

Hello Dave, yes, it is in german only indeed, but it should be easy to order when selecting the Plan Nr. 320 3011. About the costs it depents what material you already have. Sometimes you have buy 1 meter but you need only 10 cm. This is increasing the price. The raw flywheel (90 mm diam.) costs about € 40.-. I have spent round about € 150.- all together, and now I'm an owner of a lot of surplus material; maybe for future projects. Regards, Hartmut

[hartmutbehrendt]

Hello Dave, Heribert Midderhoff designed this engine with the piston rod, connecting rod, and the gliding pole outside any housing free on top of the engine. I like to see all the movements. There is no noisy exhaust valve to let the compression leave the cylinder. He uses a groove in the lower half of the cylinder, the compressed gas can pass the piston and leaf the cylinder on the open end. An engine must run very silent and smooth. The only noise should be the sound of the exhausted gas.

[hartmutbehrendt]

Hello Dave, yes, it is in german only indeed, but it should be easy to order when selecting the Plan Nr. 320 3011. About the costs it depents what material you already have. Sometimes you have buy 1 meter but you need only 10 cm. This is increasing the price. The raw flywheel (90 mm diam.) costs about € 40.-. I have spent round about € 150.- all together, and now I'm an owner of a lot of surplus material; maybe for future projects. Regards, Hartmut

[daveroussel]

Beautiful little machine !

Please explain the "Midderhoff" principle and why you were so impressed with it.

[SWINGREGORY]

VERY COOLLLLLLL