Whirly, I hope when you say you use carb heat "little and often" that you don't mean you use partial carb heat in a fixed wing. I'm sure it isn't, but I don't want there to be any misunderstanding by anyone
Good point SAS. I didn't realise that was ambiguous. No, of course you should apply full carb heat or none in a f/w aircraft. I meant that I apply FULL carb heat, for 30 seconds or so, at frequent intervals - before take-of, when doing cruise checks, when realising I've been forgetting to do cruise checks, in any descent at all, if the RPM appears to reduce for no reason, and if I haven't done it for a while so maybe a blast wouldn't do any harm.