Engines > From Plans

Teeny Tiny Micro Model Diesel from Germany

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Jasonb:
As it is so small I don't think scaling it up by 200% will be too much of a problem, you can always compare it with some other engine designs of the new capacity and make any adjustments needed. I'm assuming you mean scale the sizes by 200% not the capacity, if it is capacity then there is not much of a size change so just apply the scaling factor to all parts.

It would not be too costly to get the crankcase 3D metal printed which would save a lot of time cutting from solid.

Yes Jo's looks to be a different engine, her's has the mounting lugs carry around to front and also a web vertically at the front.

Jo:

--- Quote from: pirmin on January 21, 2025, 10:49:33 PM ---could your casting be for the 0,30cc Kratmo ( a very rare engine ) , because to me it looks it has some web cast on the frontside

--- End quote ---

It could be. My supplier did not know what it was for. He did not have any drawings with it and when I saw yours they are the right sort of dimensions.

Jo

Jasonb:
Looking a bit more I wonder if this one even used a casting, it is the type of crankcase that just needs the nose piece turning and then the shape of the crankcase can just be milled - top, tapered sides and curved bottom to leave the lugs. Similar style to the 1cc Weaver

I suppose it depends if they were also teaching them pattern making and casting or just machining.

Any clue on the drawing as to whether it mentions a casting or aluminium specification?

Weaver

pirmin:
yes jason, i also believe they just milled the crankcase,because in the Drawings is no Casting mentioned, and since those are realy good drawings i would assume it would have been mentioned if they worked from Castings. and yes there is a material mentioned , i have toi check the alloy.

btw, the weaver is a Goliath compared to this little fella :)

Jo:
Do you have anything on the 0,30cc Kratmo?

A photo would be a good start.  :)

Jo

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