Wooops, I posted this in the wrong thread! To keep this thread here complete I added the newest update here, too: I got unfinished parts of the engine for a kind of beta-build (thanks a lot, Jan!), this is the result: Then came the critical moment: Will magnets I want to use to attach the engine to the middle hull be strong enough so that I don't need an additional stand for it? See by yourself: In fact the magnets are that strong that I needed a little dull knife to be able to seperate the engine from the hull! Should be strong enough to hold it in place when all remaining parts are mounted to the tube, too.