While painful for buyers, there is nothing really wrong here. Just simple supply and demand. Lycoming almost doubled prices and still have a 2 year wait. Can you really blame them? The problem is simply too much demand. Sure, lyc could ramp up capacity, but why do that with a captive market with little competition and knowing the bubble will burst some day with no way to recoup the capital for capacity expansion. Vans is a great example of what can happen when chasing accelerating demand and that didn't even involve a slow down. It costs a lot of $ to ramp up capacity and in todays market, you need models that show ROI on that expansion and you need some revenue continuity to get there. Many are very unsure if the recent run up in engine sales is a bubble or trend change. Lyc has been around long enough to know better.engine prices may not have killed sonex but they sure as heck are a contributing factor to slow sales. When a high performance 450hp corvette engine cost half of what a 180hp air cooled aircraft engine designed in ww2 era cost... something is seriously wrong with aviation engine pricing.
Necessity is the mother of invention and at some point the eab community will need to invest in alternative engine work.
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