[quote="bexrbetter, post: 593495, member: 8594for your reply Chas, appreciated.
Yup, flywheel weight is something people shouldn't muck around with on an auto conversion (petrol can trim a little off), especially diesel. The big fan is not a suitable substitute for a flywheel. I grimace every time I see an auto driveplate only aero engine come to a sudden stop.
Not sure what you're saying with the direct drive and not at max torque comments though?
I feel very safe flying the diesel. Just solid uncomplicated power.
Torsional vibration is the price we have for having compression. Dont idle the diesel slow.
1000 rpm ok but mine best at 1400. Smoother than lycombing. On shutdown kill the air as well as fuel. No air equals no compression.
I cruise mine at 3300 which is only mid range.
3000 is good. 3800 equals 2750 propeller.
A light propeller and full flywheel mass.
Intercooler is essential to control charge temps.
No engine mod required. You fly OEM.
A small oddessy battery starts it fine.
Glow then switch off as you hit the starter.
Early direct injection hdi can have mechanical pumps put back on.
Engineers in France said the old engine is safe for 10,850 hrs flight.
Dont get carried away with hp numbers.
Duty cycle is the one.
Thats how long can it be expected to last at that power.
Its not for everyone but if you know diesel you will be fine.
Remember corperates stop thinking at five and are not spending their own money.
Do your own thinking.
Chas