ORIGINAL: coony2787
Hi Coony,
From what you are saying it seems like the reed valve is effected by ineria. The ZDZ has a rotary valve with no such problem and it Opens earlier then a piston port. This should give more torque. Do your ZDZ's run hotter the the DA did? ZDZ's seem to be a little light on cooling area. This is a real issue in a long hover, right?
Dave
My ZDZ 50's have no problem with heat. They are always around 195-210 degrees when i check the head temperture after a flight. And believe me it is hot here in Mississipi. If they can stay kewl here then they can stay cool just about anywhere.
I think you are right about the interia also. In a violent manuver a rotary valve still stays the same. To where a reed vavle can distort and not open due to applied pressure's.
Chad
Huh?, are you saying the reeds are effected by g-forces?, this is gonna be hard to prove either way, but I am highly doubtfull of it.
Anyone with the maths to work this out at least theoreticaly?, the mass and inertia of a reed petal is very small and its orientation especially in a rear induction layout is not conducive to producing this effect