A little Sleeve Valve Engine

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winklmj:
Very nice!! :thumbup: :headbang: :bow:

madjackghengis:
By the way, Achim, did anyone tell you, your engine runs backwards? I am assuming the propeller is set up as a normal aircraft prop, for pulling, and not as a pusher prop. Engines are always supposed to run clockwise from the pilot's perspective, unless there are two engines and one is counter-rotating. I had to take a look at your log again, just to get a better look at the extremely fine work you did on that carburetor. That is a very touchy piece, and you've done a lot of very fine work, I envy your drawings and skill with CAD, while I still work with a pencil in sketches. :bugeye: :jaw: :bow: mad jack

Joachim Steinke:
Many thanks for your compliments and appreciation to all of you.

And Jack, no I don’t have a new love who demands my attention….ha ha ha….but the time I can spend for my hobby is fluctuating, mostly depending on the utilisation in the job. And writing articles in several forums is part of my hobby activities also, but I need time or in other words leisure to do this (especially writing in the English ones), otherwise it’s no real fun to me. That’s the reason for some pauses from time to time, in handicraft work and in writing (and sometimes answering) as well. I am sorry for that, but I promise to come back with my next project.

And yes, the engine is running backwards, backwards if the driving direction of conventional RC plane engines is the criteria of the evaluation. My very first plan was to run the motor with a flywheel only, the idea of using a propeller instead came not before the cylinder and port design was already finished. So the direction was determined and I had to look for a left turning propeller, but a suitable version (I need a relative big midsection to have a way to the central collet nut) was hard to find on the market and I had to make my own ones.

Achim

NickG:
:bugeye: :jaw: :bow: :thumbup:

madjackghengis:
Hi Achim, you sound like a busy man, you must be happy. I may steal some of your thoughts on carburetion when it is time for a carburetor for my radial, of all the options I've looked at, none is as independent from the fuel supply as a float carb is, and I'm just going to run it, not fly it. If it has enough power, I might use it to push a 14 foot boat up the creek I live on, but I don't know about that yet. That is probably the finest carburetor I've ever seen built for a model engine, the equal to a comercial one, yet far more beautiful, and of course, hand made. You truly have set a standard for a lot of aspects of model engine building, you have a gorgeous finished engine, and it runs great. I wish we were neighbors, and could visit. :jaw: :bow: mad jack

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