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View Full Version : IVO Medium 3blade 70" on a Cbox 3:1 ratio?



wildirishtime
02-09-2011, 01:59 AM
I already have this IVO Medium in-flight-adjustable
in my posession, but have never run it
on my 582 blue head Cbox with 3:1 ratio.
This should run pretty well on a KF model 3 yes?

If I had the low ratio 2.62:1 or the Bbox I don't think I'd
be asking, but I'd think the Cbox 3:1 will power this prop
just great won't it?

~Wild

SkyPirate
02-14-2011, 11:38 AM
I'll take a stab at it Wild ,..I'm thinking you might have a heat problem if you run your pitch up too much , that's allot of prop to turn with 65 hp, not saying it can't be done but most power plants under 100 hp use the ivo light ,..not the medium ivo,.


Chase

Av8r_Sed
02-14-2011, 04:22 PM
I bought an IVO ground adjustable last summer for my Model III, 582 with 3:1 gearbox. The recommendation from John and IVO was to go with a 2 blade, 70" medium. It's not flying yet so I can't give any performance feedback.

-- Paul S

SkyPirate
02-14-2011, 05:11 PM
I don't know why but I had 3 blade prop in my mind ,..a 2 blade would probably work good :D

Chase

wildirishtime
03-01-2011, 11:40 AM
Well I can run it either 2 or 3 blade (IVO is trick like that!) but
my 3blade GSC 68" works great, great STOL performance and
wanted at least that good.... but with pitch control. That's why
I was thinking 3blade would be smart? I also got the "2 blade"
reco from IVO.

Anyone run a 2blade IVO on the 582 ? Does it vibrate? I heard
rumor they vibrate....?

airjunkee
03-16-2011, 04:16 PM
Hello, I have a kitfox iv 1050 (currently 912s) that had a 582 blue head on it. I had an IVO ground adjustable 70" prop on a cbox 3:1 ratio. The propeller worked very well, you had to have the pitch at neutral or slightly negative on the pitch. The propeller was very smooth, climb was about1000 ft/min and cruise 85-90 mph at about 6200 rmp. I liked this propeller better than the 3 bladed gsc.

regards Shawn

wildirishtime
03-16-2011, 05:30 PM
was that a 3blade ground adjustable you had, or two?

airjunkee
03-16-2011, 06:40 PM
Hello,
It was a two bladed medium prop, there is no way a 582 will turn a 3 bladed meduim prop. When I purchased this prop from Ivo this was the diameter and model (medium) that was recomended by Ivo. I think that 68 or 69" would have been better suited.

Shawn

Olle1975
03-09-2014, 11:39 PM
but
my 3blade GSC 68" works great, great STOL performance and
wanted at least that good

Which pitch and cbox do you use, I have the same prob?

Olaf