dog1 250 Posted November 21 (edited) some questions i need help with 1) if the engines are too cold will they seize in flight ? 2) what is the optimum cruising speed to avoid damage . 3) climbing takes time , what is the best speed for climbing and for how long before leveling . 4) cowl flaps opened at 100 % at take off , reduced to 50 in flight in warm weather . still the engines get damaged . 5) in winter the temperature of the engine goes below 60 dgrs , will this cause damage ? Edited November 21 by dog1 Share this post Link to post Share on other sites
Hanu 105 Posted November 21 (edited) 1) I cannot see this to happen in cruise any more; you should keep those cowl flaps so closed as possible to keep the speed up anyway. 2) I run ~78% both RPM & Throttle which gives you the maximum continuous power. 3) You can run 30 mins climb power (~87% both). I try to keep the speed around 260-270 during the climb. Edited November 21 by Hanu Share this post Link to post Share on other sites
dog1 250 Posted November 21 (edited) both my engines are damaged 3-4 mn after take off , height 300 mt , cowl flaps full open temperature below 60 dgrs , acceleration below 65 % speed 200 kmhr . and still both engines get damaged . i am not reducing prop speed . pitch zero . i am hardly 3-4 km away from my airfield and kaput . do the engines get damaged if below 60 dgrs for 2-3 mn ? i am not lasting 5mn in the air at 65 % acceleration 200 km hr . If i dare to climb i have to increase the speed for 2-3mn then i level again because i'm worried the engines will seize and then they seize anyway !! Edited November 21 by dog1 Share this post Link to post Share on other sites