IO-390 vs IO-360

[Ironflight]

Originally Posted by Freemasm

Would seem that an 8 with one of the new Whirlwind 300 series would be a nice match; 3 blades but only ~35 lbs IIRC. The performance reports here have been impressive. 20 some odd pounds off of that station would be pretty dramatic per what's been stated here. Depending on mission of course, would seem a great match for IO390 powered 8. Anybody?

Well that’s the prop I’ve settled on with the the parallel valve 360 on my -8, and its a great combination. But you’d have to check with WHirlwind to see if its an allowable prop for the 390 - not all combinations are supported.

[Freemasm]

Checking with the OEM is always prudent. Per the website

[msstahl]

Originally Posted by Freemasm

Would seem that an 8 with one of the new Whirlwind 300 series would be a nice match; 3 blades but only ~35 lbs IIRC. The performance reports here have been impressive. 20 some odd pounds off of that station would be pretty dramatic per what's been stated here. Depending on mission of course, would seem a great match for IO390 powered 8. Anybody?

I went with the WW 300/72 to put on the front of an IO390 EXP 119 on my 8 fastback. Like Paul said, I wish I had less horsepower said no pilot ever!

I’ll let you know next summer how the combination turns out.