I am looking to get plans for a couple models, the first one I want to do is a boxer engine and found Martin Ohrndorf’s plans. Has anyone made this engine and can comment on the quality of the plans, or if there is a better set of plans out there? I’m also interested in building a radial and was thinking of a 5 cylinder, but his website says you need the 9 cylinder plans to make the 5 cylinder model, so the price gets up there having to buy both. Has anyone built his 9 cylinder radial?
