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4:1 C box

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Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Tue Apr 06, 2010 2:06 pm Post subject: 4:1 C box

Got a chance to pick up a 4:1 C box fairly reasonably, idea is to reduce prop speed ~ prop noise. Anybody on the list using one on a 582, and what sort of prop are you using? 



How do you like it? 



Don't want to waste money experimenting if somebody else has already established it doesn't work...



Richard Pike

MKIII N420P (420ldPoops)

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Tue Apr 06, 2010 3:15 pm Post subject: 4:1 C box

I have a 4:1 gearset in a "C" box driving a 66" Warp Drive prop. I like it, seems to work good. People tell me it's relatively quiet for a 2 stroke. Even though my Mk III is a bit heavy at 545 lb. empty it climbs like the proverbial homesick angel. Flying single I cannot get a departure stall to break, it just bobs the nose a bit. 



Rick Girard

do not archive



On Tue, Apr 6, 2010 at 5:06 PM, Richard Pike <richard(at)bcchapel.org (richard(at)bcchapel.org)> wrote:

 [quote]--> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>

  

 Got a chance to pick up a 4:1 C box fairly reasonably, idea is to reduce prop speed ~ prop noise. Anybody on the list using one on a 582, and what sort of prop are you using?

 

 How do you like it?

 

 Don't want to waste money experimenting if somebody else has already established it doesn't work...

 

 Richard Pike

 MKIII N420P (420ldPoops)

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=293242#293242

 

 

 

 

 

 

 

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 [b]

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The smallest miracle right in front of you is enough to make you happy....

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Tue Apr 06, 2010 3:32 pm Post subject: 4:1 C box

Flying single I cannot get a departure stall  to break, it just bobs the nose a bit.

 



 Rick Girard

  

  

  

  

 Rick G/Gang:

  

 That is normal performance for all models of Kolb  aircraft.

  

 john hauck

 mkIII - 2,994.0 hours

 912ULS - 424.8 hours

 Titus, Alabama

   [quote][b]

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Tue Apr 06, 2010 3:56 pm Post subject: Re: 4:1 C box

 	  rickofudall wrote: 	
		  I have a 4:1 gearset in a "C" box driving a 66" Warp Drive prop. I like it, seems to work good. People tell me it's relatively quiet for a 2 stroke. Even though my Mk III is a bit heavy at 545 lb. empty it climbs like the proverbial homesick angel. Flying single I cannot get a departure stall to break, it just bobs the nose a bit. 



Rick Girard

do not archive

 

 [b] 	




Two or three blade? What rpm at various cruise speeds? Max speed at what rpm?



Thanks,

Richard Pike

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Tue Apr 06, 2010 6:36 pm Post subject: 4:1 C box

It's a three blade with straight blades and square tips. I get 82 IAS at 6200 RPM, but I run 62 IAS at 5200 mostly for economy and longevity and almost never go above 5600 RPM in level flight.



Rick

 do not archive



On Tue, Apr 6, 2010 at 6:56 PM, Richard Pike <richard(at)bcchapel.org (richard(at)bcchapel.org)> wrote:

[quote] --> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>

 

 

 rickofudall wrote:

 > I have a 4:1 gearset in a "C" box driving a 66" Warp Drive prop. I like it, seems to work good. People tell me it's relatively quiet for a 2 stroke. Even though my Mk III is a bit heavy at 545 lb. empty it climbs like the proverbial homesick angel. Flying single I cannot get a departure stall to break, it just bobs the nose a bit.

  >

 > Rick Girard

 > do not archive

 >

 >  [b]

 

 

 Two or three blade? What rpm at various cruise speeds? Max speed at what rpm?

 

 Thanks,

 Richard Pike

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=293261#293261

 

 

 

 

 

 

 

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 ="_blank">http://www.matronics.com/contribution

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 [b]

_________________
The smallest miracle right in front of you is enough to make you happy....

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Tue Apr 06, 2010 7:19 pm Post subject: Re: 4:1 C box

 	  rickofudall wrote: 	
		  It's a three blade with straight blades and square tips. I get 82 IAS at 6200 RPM, but I run 62 IAS at 5200 mostly for economy and longevity and almost never go above 5600 RPM in level flight.



Rick

  

 [b] 	




Thanks, that's exactly what I wanted. Now All I have to do is see if I can change my 2 blade Ivo to a 3 blade and use it, or do I need to sell the Ivo and go to a 3 blade Warp.

(Which will make John SO pleased... <grin>)



Richard Pike

MKIII N420P (420ldPoops)

HShack(at)aol.com
Guest

Posted: Wed Apr 07, 2010 6:53 am Post subject: 4:1 C box

I would go with a 68" 3 blade...........

  

  In a message dated 4/6/2010 11:20:03 P.M. Eastern Daylight Time,  richard(at)bcchapel.org writes:

  	  Quote: 	
		  Now All    I have to do is see if I can change my 2 blade Ivo to a 3 blade and use it, or    do I need to sell the Ivo and go to a 3 blade  Warp 	


  [quote][b]

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Wed Apr 07, 2010 8:18 am Post subject: Re: 4:1 C box

 	  HShack(at)aol.com wrote: 	
		  I would go with a 68" 3 blade...........

  

  	




Currently using a 68" Ivo 2 blade. If I could simply add another blade, that would be ideal. Will call Ivo and ask them.



Richard Pike

MKIII N420P (420ldPoops)

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Wed Apr 07, 2010 12:41 pm Post subject: Re: 4:1 C box

End of the line - Ivo said no. The U/L prop will not work on the 3.47 or 4:1 ratio gearboxes. Would have to upgrade to a stronger prop than the U/L unit, & that is too much money for what I want. Think I'll just get a good ANR headset instead.



Thanks anyway guys for helping, at least I know more now than I did.



Richard Pike

MKIII N420P (420ldPoops)

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Wed Apr 07, 2010 1:55 pm Post subject: 4:1 C box

Richard, Sounds like a good reason to put the Ivo on eBay and use the money to get a WD. MHO.



Rick

do not archive



On Wed, Apr 7, 2010 at 3:41 PM, Richard Pike <richard(at)bcchapel.org (richard(at)bcchapel.org)> wrote:

 [quote]--> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>

  

 End of the line - Ivo said no. The U/L prop will not work on the 3.47 or 4:1 ratio gearboxes. Would have to upgrade to a stronger prop than the U/L unit, & that is too much money for what I want. Think I'll just get a good ANR headset instead.

  

 Thanks anyway guys for helping, at least I know more now than I did.

 

 Richard Pike

 MKIII N420P (420ldPoops)

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=293398#293398

 

 

 

 

 

 

 

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 arget="_blank">http://www.matronics.com/Navigator?Kolb-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 [b]

_________________
The smallest miracle right in front of you is enough to make you happy....

elleryweld(at)aol.com
Guest

Posted: Thu Apr 08, 2010 1:45 am Post subject: 4:1 C box

Richard 

   if you want to trade your IVO for a 3 blade warp  Talk to me

 

 

     Ellery Batchelder Jr.

 

 

 

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