Originally Posted by hommel
Not entirely sure, but if memory serves me well, I once read that soft-start can be very hard on the ESC MosFets. Not sure if that implied certain brands or just in general.
I don't think so - it may be more wear and tear but it isn't anything I've found has become an issue in my models with 7 to 12 seasons of hard play on them. 100 percent of my EDF airframes are set to soft start. My Castle Creations ESC (where I can program them with more custom features) are set very soft. I also add a "servo slow" function to throttle (I use Futaba and this is one of the good features the newer ones have). In thisfeature a full spool up is slowed - it starts right away but the full range is stretched to appx. 2.5 seconds from idle to full and you can get more fancy than that but suffice to say it is a nice feature for me. Half throttle to full is about 1.2 seconds. You can set this to whatever you like - instant, or longer than I have it. My setting is pretty quick, as long as you aren't sleeping at the wheel (and you'll crash for other reasons if you are) - you will not get into any trouble with that. But what this gives me is a smooth transition and a more jet like sound and response. Since I fly turbine also it allows me to fly the same way with my EDF's. Though 2.5 seconds is very fast, I still get nearly immediate response and it's not quite like a turbine. Best of both worlds though.
One of the biggest - well, THE biggest pet peeve I have with EDF is the dentist drill fast spool up - spool down, and the pulsating up-down-up-down-up sound that happens with a fast thumb. You can really hear it on approach and during taxi operations with instant response EDF's. And the sound is there for any EDF, even the multi blade ones, as you are hearing the motor and ESC operating at the low RPM's growling and screeching and putting a lot of wear and tear on the mounts, airframe and rotor not to mention motor and shaft. I also never ever use the brake function on an EDF. That's just needless wear and tear IMHO. I like the free spinning rotor for motor cooling and air brake effect if I go to idle.