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IVO in-flight adjustable, is it a good option?

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Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Wed May 27, 2009 1:01 pm Post subject: IVO in-flight adjustable, is it a good option?

Good experiences using the IFA - UL on a 582 B box  really helped shorten

the take off run on floats.



Noel



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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

akflyer

Joined: 07 May 2007
Posts: 574
Location: Soldotna AK

Posted: Wed May 27, 2009 7:12 pm Post subject: Re: IVO in-flight adjustable, is it a good option?

hmm would have to say that if it help the take of run, then yep its a good option...( I know I like mine, especially on floats).  Were you posting a question or opinion?

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_________________
DO NOT ARCHIVE
Leonard Perry aka SNAKE
Soldotna AK
Avid "C" / Mk IV
582 (147 hrs and counting on the rebuild)
IVO IFA
Full Lotus 1450
#1 snake oil salesman since 1-22-2009

I would rather die trying to live, than to live trying not to die....

Mark.Summers(at)lwbref.co
Guest

Posted: Fri May 29, 2009 1:22 pm Post subject: IVO in-flight adjustable, is it a good option?

I bought a C box with the slip clutch recently, just realized the gear

ratio is 3.47 would this ratio be an issue for a 582 with 66 inch three

blade IVO ground adjustable prop. Thanks Mark



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Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Fri May 29, 2009 4:11 pm Post subject: IVO in-flight adjustable, is it a good option?

I think with that reduction you will want a bigger prop.  With slow turning

props bigger is generally better.  You can use one of the blade tip speed

calculators to make sure the tips won't go supersonic on you at max rpm..



Noel



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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

akflyer

Joined: 07 May 2007
Posts: 574
Location: Soldotna AK

Posted: Sun May 31, 2009 5:30 am Post subject: Re: IVO in-flight adjustable, is it a good option?

 	  Mark.Summers(at)lwbref.co wrote: 	
		  I bought a C box with the slip clutch recently, just realized the gear

ratio is 3.47 would this ratio be an issue for a 582 with 66 inch three

blade IVO ground adjustable prop. Thanks Mark



-- 	




your performance will suffer greatly with the 3.47.  I have been running 2.62:1 with IVO IFA 72"  I went to the 3:1 at the suggestion of a guy who stated the performance was much better.. I have tried 3 different props and found that I lost performance all the way around.  Longer TO run, 5 mph less cruise, and about 300 FPM less on climb.  Oh as an added bonus, the fuel burn went up a touch over 1 gph to cruise at the same speed.  I am switching back to the 2.62:1 next time home.



snakeman

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propellerdesign(at)tele2.
Guest

Posted: Sun May 31, 2009 7:11 am Post subject: IVO in-flight adjustable, is it a good option?

66" will be good for 2,62:1

71" ---------------- 3,00:1

77" ---------------- 3,47:1



This with a Warp 3 blade or other normal 2 blade,

Problem with the high ratio is that angle become very large and a big part 

of prop will be stalled at take off/climb



Jan



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thesupe(at)hotmail.com
Guest

Posted: Sun May 31, 2009 1:39 pm Post subject: IVO in-flight adjustable, is it a good option?

I've got a set of 2.62 gears in very good condition that I might sell for the right price.  Shoot my a private email if you are interested.  Take care C  Jim Chuk

 

 	  Quote: 	
		   Subject: Re: IVO in-flight adjustable C is it a good option?

 From: akflyer_2000(at)yahoo.com

 Date: Sun C 31 May 2009 06:30:14 -0700

 To: kitfox-list(at)matronics.com

 

 --> Kitfox-List message posted by: "akflyer" <akflyer_2000(at)yahoo.com>

 

 

 Mark.Summers(at)lwbref.co wrote:

 > I bought a C box with the slip clutch recently C just realized the gear

 > ratio is 3.47 would this ratio be an issue for a 582 with 66 inch three

 > blade IVO ground adjustable prop. Thanks Mark

 > 

 > --

 

 

 your performance will suffer greatly with the 3.47. I have been running 2.62:1 with IVO IFA 72" I went to the 3:1 at the suggestion of a guy who stated the performance was much better.. I have tried 3 different props and found that I lost performance all the way around. Longer TO run C 5 mph less cruise C and about 300 FPM less on climb. Oh as an added bonus C the fuel burn went up a touch over 1 gph to cruise at the same speed. I am switching back to the 2.62:1 next time home.

 

 snakeman

 

 --------

 DO NOT ARCHIVE

 Leonard Perry aka SNAKE

 Soldotna AK

 Avid &quot;C&quot; / Mk IV 

 582 IVO IFA

 Full Lotus 1260

 #1 snake oil salesman since 1-22-2009

 

 hander outer of humorless darwin awards

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=246128#246128

 

 

 

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Mark.Summers(at)lwbref.co
Guest

Posted: Mon Jun 01, 2009 3:24 am Post subject: IVO in-flight adjustable, is it a good option?

Thanks to all for the C box gear ratio information, appears I need to

re-gear or get a bigger prop. Is a 77" prop a viable option for a K-F 2?

Would I need to consider a 2 blade v/s 3 if I increase the prop size?

The main reason I bought the C box was to get the slip clutch addition,

I assume a larger prop would not be a problem with the slip clutch.

Thanks Mark



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