Mooney Mike

Thanks much for a better understanding of the speed brakes. I will never deploy in icing. Hope to never be in icing. Not surprised there’s another Mooney Mike. I’m Colorado Mooney Mike. M20 k 252. Owned three years. Had seven singles before her and this is head and shoulders the best airplane I’ve ever flown. Solid, fast and looks damn good. ... now if I could just get that speed brake to retract. Got my seaplane rating last week at the ripe old age of 63! Fun stuff.

My right speed brake just started to be slow to retract (after a Colorado cold snap). They both deploy fine. I believe they are vacuum type since it’s a1988 m20k and they only work with the engine running. Does anyone know if the vacuum retracts or is it strictly cable or spring? Do they run off the engine driven pump? I also noticed my vacuum gauge took about five minutes to get in the green. Normal? Problem looming? Even when engine driven pump was in the green the right brake would not retract normally.( very slow) I’m working hard on Ifr currency and expect to be flying in imc soon. Don’t want any surprises. Help!