Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Mushy control stick
Goto page Previous 1, 2

Matronics Email Lists Forum Index -> Kolb-List

View previous topic :: View next topic

Author Message

WillUribe(at)aol.com
Guest

Posted: Wed Jul 18, 2007 11:13 am Post subject: Mushy control stick

here is the old U-Joint.

 



Get a sneak peek of the all-new AOL.com.

P5290487.JPG

Description:

Filesize:

36.42 KB

Viewed:

352 Time(s)

John Hauck

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

Posted: Wed Jul 18, 2007 11:59 am Post subject: Mushy control stick

| wow! never knew there was a tiny U-Joint in there. Looked them up 

in AC spruce.

 | Paul Petty

Did you look at the prices???



john h

mkIII

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

JetPilot

Joined: 10 Jan 2006
Posts: 1246

Posted: Wed Jul 18, 2007 12:58 pm Post subject: Re: Mushy control stick

 	  John Hauck wrote: 	
		  Mike:



The weakest, most flexible part of the Kolb  wing is the bow tip.  You 

plan on turning the aileron counterbalance weight into a spade at the 

weakest, most flexible point, outboard of the wing tip.  Might want to 

think on that a bit.  Also, the counterbalance weight attachment was 

not designed nor intended to have increased torsional loads.



All Kolbs inherently load up the ailerons at speeds over 50 to 60 mph. 

You ain't gonna change that unless you cut the cord of the aileron in 

half.  



john h

mkIII 	




You are correct that it would put more stress on the bow tip, that could be a problem.  The other answer would be to put a spade in the middle of the aileron underneath the wing, which is probably a better solution and gets rid of any unknowns like tip vorticies.  Thanks for that advice, it will be a lot of extra work, but if I do this I will put standard spades in the middle of the ailerons.



I was wondering why my Kolb was heavy on the ailerons while Richard reports his to be light.  I am cruising pretty fast with the 912-S, that is probably why they are stiffening up quite a bit.



Mike Bigelow

_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!

Kolb MK-III Xtra, 912-S

Paul Petty

Joined: 11 Jan 2006
Posts: 226
Location: Mississippi

Posted: Wed Jul 18, 2007 2:44 pm Post subject: Re: Mushy control stick

Duh John! Stupid me!  



Im going to look over some options ans see about a fix. Thanks for the help. 



do not archive

_________________
Paul Petty
Kolbra #12
Ms Dixie
912 UL 70" warp

lucien

Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM

Posted: Wed Jul 18, 2007 4:26 pm Post subject: Re: Mushy control stick

 	  WillUribe(at)aol.com wrote: 	
		  here is the old U-Joint.

 



Get a sneak peek of the all-new AOL.com. 	




Wonderful.. this is what's on my FS II's linkage... Mine's a pre-TNK FS II finished in 98.....



So, is this a joint that has hazards and needs replacement or ?



LS

_________________
LS
Titan II SS

lucien

Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM

Posted: Wed Jul 18, 2007 4:39 pm Post subject: Re: Mushy control stick

 	  jstewart(at)inebraska.com wrote: 	
		  Maybe take Kimberly's advice and reflex the ailerons a bit.  That might help

a lot with the control forces.



J.D. 



	




Hey JD,



I thought about it when I read Kimberly's post, but I'm actually used to the feel of it now and the plane flies perfectly the way it is. 



I think the ailerons ride a hair bit up in the air already anyway... I'm going to look at that next time I'm up.



Sorry guys for the brief titan exchange - JD is the seller/builder/co-designer of my titan and builder extraordinaire... 



LS

_________________
LS
Titan II SS

Richard Pike

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

Posted: Wed Jul 18, 2007 7:08 pm Post subject: Mushy control stick

I think it is just not as precision as what they are currently using. On the 

other hand, it only needs to work in a Kolb, not in a watch...



Richard Pike

MKIII N420P (420ldPoops)



---

_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0

Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing.

lucien

Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM

Posted: Wed Jul 18, 2007 7:18 pm Post subject: Re: Mushy control stick

 	  Richard Pike wrote: 	
		  I think it is just not as precision as what they are currently using. On the 

other hand, it only needs to work in a Kolb, not in a watch...



Richard Pike

MKIII N420P (420ldPoops)



--- 	




Ok, just curious if it was an AD that I needed to call Kolb about or something like that...



The plane has about 500 hours on it and hasn't seemed to have problems with this joint, so I was just wondering if it was something that just hadn't been updated but needed to be.....



LS

_________________
LS
Titan II SS

ElleryWeld(at)aol.com
Guest

Posted: Thu Jul 19, 2007 11:35 am Post subject: Mushy control stick

I installed two of the new style U-Joints in my firestar when I rebuilt it a couple years ago and they are not cheap  and not rubber coupled 

 

 Ellery, N447EB

 

 do not archive

**************************************

 Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour  [quote][b]

jindoguy(at)gmail.com
Guest

Posted: Thu Jul 19, 2007 1:45 pm Post subject: Mushy control stick

All, Go to McMaster.com page 1121. At the top of the page is a picture of several different u-joints. The one on the left is what you'd find if you cut off the protective bellows of that AN unversal joint. They have bellows for these and for a given size can save you a few bucks over ACS. 



Rick



On 7/19/07, ElleryWeld(at)aol.com (ElleryWeld(at)aol.com) <ElleryWeld(at)aol.com (ElleryWeld(at)aol.com)> wrote: [quote] I installed two of the new style U-Joints in my firestar when I rebuilt it a couple years ago and they are not cheap  and not rubber coupled 

 

 Ellery, N447EB

 

 do not archive

**************************************

 Get a sneak peek of the all-new AOL at  http://discover.aol.com/memed/aolcom30tour  [quote][b]  http://www.matronics.com/Navigator?Kolb-List http://forums.matronics.com 

when you live at the airport.  [quote][b]

Display posts from previous:

	Matronics Email Lists Forum Index -> Kolb-List	All times are GMT - 8 Hours Goto page Previous 1, 2
Page 2 of 2

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum