R44 Carb Ice
I totally get the carb ice thing when we are coming into land, lowering the lever and creating a Venturi causing the air to speed up and subsequently get colder thus allowing ice to form from in the carburettor due to the moisture in the air. So all good with that. However, I was hover taxing the other day at just under 25 inches of manifold pressure (almost at full weight) and the gauge was going well into the minus. No big deal as I pulled carb heat to ensure it was above zero but of course subsequently lost some power and had to “cushion crawl” and use the down draft. I’m just wondering why the carb gets so cold when the butterfly valve is almost fully open. Is it simply the vast amount of air being sucked in? Thanks for any insights👍🏻👍🏻