That's good news. The wife will like the lower price.
Re: Picking a prop
That's good news. The wife will like the lower price.
Re: Picking a prop
Did you ever figure what gear ratio you have? I may not keep the 3 blade 68" IVO I have. It would work fine with a 2.58 or 2.62 ratio gearbox. JImChuk
Re: Picking a prop
I went through all the paperwork and I see no mention of engine or gearbox. Can you believe that? The airframe log does indicate he changed the plugs every once in a while. But there is no engine log book. When I had the engine done I did get a book, but I'll be damned if I can find it tonight. Wife's filing system...Originally Posted by avidflyer
Is the ration stamped on the case anywhere? I've gone through my pre-teardown photos but see no data tag for the gearbox.
Re: Picking a prop
Take a spark plug out, find top dead center on the piston with probe. Turn the prop through one revolution and count how many times the piston comes back to TDC. Most likely you have either a 3-1 or 2.62-1 gear ratio. A guy just posted an IVO prop on the AvidFoxFlyersForum. Not sure if you are a member there. Here is a link if it will let me do it. JImChuk http://www.avidfoxflyers.com/index.p...op-3-blade-lh/
Re: Picking a prop
I finally had the chance to work on the airplane tonight. I have never in almost 20 years had to mow the runway all the way into October. What a time waster. Anyway, the ratio is 3:1. And I'm still looking for help on a prop. Jim Chuk, you still have something?
Jay
Re: Picking a prop
Not sure at this point. I'm waiting to get my 2 blade Warp back from the factory. I sent it there to be inspected and balanced. If it comes back good to go, I may sell the 3 blade 68" IVO I have. I also have a couple of 3 blade Warp drive props, but I'm not sure what I want to do with them yet. One is 70" taper tip, the other is 70" square tip. Jim Chuk
Re: Picking a prop
I have a couple of props that I am going to sell as I did not use the 582 in my model IV. I have a warp 2 blade great shape but I could never get it to balance to my satisfaction. $300USD
I have a three blade Ultralight IVO that came with the plane, $400 USD
I also have a GSC that appears OK offers?
I have a GSC that came with my 912 that the factory said was not airworthy.
I will be putting these in the classified sections but noticed your looking and thought you might like first shot.
By the way IVO does not recommend the 3blade Ultralight prop on a 3 to 1 gearbox due to harmonics. I ran one on my Buzzard for 400hrs with no problems.
Norm
Norm
Airdrie Ab, Can
North of Calgary
Flying SuperFox Model IV
Re: Picking a prop
I'm not mounting a GSC again due to life limit. I have never heard of the harmonic issue with the IVO. Is that on their web site? And I want to stick with a three blade. Thanks anyway.
Jay
Re: Picking a prop
I don't think it is their website. Got the infrormation talking to one of the guys at factory. The IVO 3 blade is a super smooth prop. I liked mine enough on the old plane that I put a three blade IVO on my 912. By the way I am using the ultralight on the 912 as many do.
Norm
Airdrie Ab, Can
North of Calgary
Flying SuperFox Model IV
Re: Picking a prop
I think the harmonics on the IVO three blade with 3-1 reduction is less of a problem when you use a knurled faced hub. I think IVO said that. Plus put the tape across the blades at the hub to see if you get any movement. I've ran a 3 blade IVO on a 3-1 gear ratio quite a bit also. JImChuk
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