Power settings
in General Tech Discussion
7 years ago
My Sport Cruiser is powered by a Rotax 912uls engine fitted more recently with a 3 blade prop and a nifty (TKO-CRZ-CLM) settings Constant Speed Unit.
When levelling out at altitude I simply pull back the throttle which brings down the rpm as well as the MP and I then press the CRZ button on the CSU.
Because by selecting CRZ the CSU (according to the manual) should automatically adjust the pitch/rpm to my pre selected cruise setting of 4800rpm, should I be just setting the throttle to provide a MP setting to give my ideal cruise performance/speed of 100kts and not bother so much with the rpm ?
(which gives a more steady readout than the fluctuating MP gauge ).
I do find that by simply adjusting the throttle to give around 4800-4900 rpm (which I can do with the throttle) it also settles the airspeed to my desired 100kts without bothering about the MP setting (which appears to settle nicely at around 26 inches anyway)?
Is this practice ok or should I be concentrating only on the MP setting in this setup I have and leave the rpm to the CSU ?
When levelling out at altitude I simply pull back the throttle which brings down the rpm as well as the MP and I then press the CRZ button on the CSU.
Because by selecting CRZ the CSU (according to the manual) should automatically adjust the pitch/rpm to my pre selected cruise setting of 4800rpm, should I be just setting the throttle to provide a MP setting to give my ideal cruise performance/speed of 100kts and not bother so much with the rpm ?
(which gives a more steady readout than the fluctuating MP gauge ).
I do find that by simply adjusting the throttle to give around 4800-4900 rpm (which I can do with the throttle) it also settles the airspeed to my desired 100kts without bothering about the MP setting (which appears to settle nicely at around 26 inches anyway)?
Is this practice ok or should I be concentrating only on the MP setting in this setup I have and leave the rpm to the CSU ?
