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Torque tube

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vayuwings

Joined: 12 Dec 2008
Posts: 16
Location: arizona

Posted: Fri Dec 12, 2008 11:13 pm Post subject: Torque tube

Hello -   I'm new to the list and am building a 601XL...  I've given the topic search my best effort and didn't see anything over the many pages about my subject, so I'll try and describe it and see if anyone could share an opinion.

I'm done with the tail and wings and am at a point to test install the torque tube and the Y stick in the fuse for measurement. With the tube resting in the rear bearing behind the seat back, and resting in the front bearing at the center spar, I slid the Y stick over the tube and temporarily installed a bolt in the pre-drilled hole for it in the tube. Now attached to the tube, when I center the Y stick over the ac centerline marked on the top of the center spar, the rear flange of the tube that will attach to the aileron cables is a good 10-15 degrees off pointing to the left (pilot side).

  I haven't heard from ZAC from my emails a few weeks now, so I thought I would run it by any interested builder. After one would tighten the cables to the rear flange, I'm just not sure if that would work or not. I think the pre-drilled hole was drilled incorrectly in the tube... 

Thanks -

Dave

psm(at)att.net
Guest

Posted: Sat Dec 13, 2008 3:55 am Post subject: Torque tube

Hi Dave,



Perhaps you will get better response from ZAC if you call on the 

telephone.  If you do that during normal business hours you will 

usually get tech support within a couple of minutes.



I don't remember ever actually measuring the angle of the rear tab on 

the tube, but I think mine has the tab aligned with the stick when it 

is mounted.  It seems to me you do indeed have a flawed part.



Paul

XL getting close

At 11:13 PM 12/12/2008, you wrote:

 	  Quote: 	
		  Hello -   I'm new to the list and am building a 601XL...  I've given 

the topic search my best effort and didn't see anything over the 

many pages about my subject, so I'll try and describe it and see if 

anyone could share an opinion.

I'm done with the tail and wings and am at a point to test install 

the torque tube and the Y stick in the fuse for measurement. With 

the tube resting in the rear bearing behind the seat back, and 

resting in the front bearing at the center spar, I slid the Y stick 

over the tube and temporarily installed a bolt in the pre-drilled 

hole for it in the tube. Now attached to the tube, when I center the 

Y stick over the ac centerline marked on the top of the center spar, 

the rear flange of the tube that will attach to the aileron cables 

is a good 10-15 degrees off pointing to the left (pilot side).

   I haven't heard from ZAC from my emails a few weeks now, so I 

 thought I would run it by any interested builder. After one would 

 tighten the cables to the rear flange, I'm just not sure if that 

 would work or not. I think the pre-drilled hole was drilled 

 incorrectly in the tube...

Thanks -

Dave

pdn8r(at)yahoo.com
Guest

Posted: Sat Dec 13, 2008 6:31 am Post subject: Torque tube

Hey Dave,

  

 Yea, sounds like a flawed part.  Mine lines up perfectly (i didn't use a digital level to check it just eyeballed it) vertical with the Y-Stick.



Bill PaganEAA Tech Counselor #4395

--- On Sat, 12/13/08, vayuwings <vayuwings(at)cox.net> wrote:



  	  Quote: 	
		  From: vayuwings <vayuwings(at)cox.net>

Subject: Torque tube

To: zenith-list(at)matronics.com

Date: Saturday, December 13, 2008, 2:13 AM



 	  Quote: 	
		  --> Zenith-List message posted by: "vayuwings"

<vayuwings(at)cox.net>



Hello -   I'm new to the list and am building a 601XL...  I've given

the topic search my best effort and didn't see anything over the many pages

about my subject, so I'll try and describe it and see if anyone could share

an opinion.

I'm done with the tail and wings and am at a point to test install the

torque tube and the Y stick in the fuse for measurement. With the tube resting

in the rear bearing behind the seat back, and resting in the front bearing at

the center spar, I slid the Y stick over the tube and temporarily installed a

bolt in the pre-drilled hole for it in the tube. Now attached to the tube, when

I center the Y stick over the ac centerline marked on the top of the center

spar, the rear flange of the tube that will attach to the aileron cables is a

good 10-15 degrees off pointing to the left (pilot side).

  I haven't heard from ZAC from my emails a few weeks now, so I thought I

would run it by any interested builder. After one would tighten the cables to

the rear flange, I'm just not sure if that would work or not. I think the

pre-drilled hole was drilled incorrectly in the tube... 

Thanks -

Dave





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p 19178#219178





	
	


         [quote][b]

larry(at)macsmachine.com
Guest

Posted: Sat Dec 13, 2008 7:36 am Post subject: Torque tube

Hi Dave,

I'd suggest you talk with Zenith, Nick or Roger and put that problem to 

them. They are very good about taking care of issues which relate to 

their production.



Larry McFarland 601HDS at www.macsmachine.com

do not archive



vayuwings wrote:

 	  Quote: 	
		   



 Hello -   I'm new to the list and am building a 601XL...  I've given the topic search my best effort and didn't see anything over the many pages about my subject, so I'll try and describe it and see if anyone could share an opinion.

 I'm done with the tail and wings and am at a point to test install the torque tube and the Y stick in the fuse for measurement. With the tube resting in the rear bearing behind the seat back, and resting in the front bearing at the center spar, I slid the Y stick over the tube and temporarily installed a bolt in the pre-drilled hole for it in the tube. Now attached to the tube, when I center the Y stick over the ac centerline marked on the top of the center spar, the rear flange of the tube that will attach to the aileron cables is a good 10-15 degrees off pointing to the left (pilot side).

   I haven't heard from ZAC from my emails a few weeks now, so I thought I would run it by any interested builder. After one would tighten the cables to the rear flange, I'm just not sure if that would work or not. I think the pre-drilled hole was drilled incorrectly in the tube... 

 Thanks -

 Dave





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 19178#219178

vayuwings

Joined: 12 Dec 2008
Posts: 16
Location: arizona

Posted: Sat Dec 13, 2008 10:10 am Post subject: Re: Torque tube

Thanks guys for your responses.... I'll call on Monday to see if I can get hold of Roger or Caleb, etc. I've got one or two day responses from ZAC on my emails always before - maybe they're just busy at the moment or I didn't explain the problem correctly, ..... email is just so convenient and I use it constantly, hope I can remember how to use, what's it again, a Telephone?..... 

Have really enjoyed the last 3 weeks or so pouring over the 90+ pages of this list for any hints, clues, etc. to make my building better - Larry you have an excellent web page, nice work and plane - I'm still agonizing over engine choices keeping under 10K, but other than that I'm going to use many suggestions like the slider plate for steering rods, the homemade tensiometer, etc. that I found on this list. 

Thanks again,

Dave

N371EK  reserved

601XL kit

hills(at)sunflower.com
Guest

Posted: Sat Dec 13, 2008 10:28 am Post subject: Torque tube

Dave;



For cheap (ish) engines, think about used or rebuilt. Be sure to follow ebay

auctions and check barnstormers regularly, sometime guys are parting out

there planes too and you can get a good deal.



I have seen some real steals on Subaru with FWF and Contental C-85 and

O-200s (with all accessories) over the last year, I know they are out there

and winter is the best time to buy, or to make an offer. Hey, if they don't

hang up, you offered too much money to start with !!!!!



Roger

 



--

vayuwings

Joined: 12 Dec 2008
Posts: 16
Location: arizona

Posted: Sat Dec 13, 2008 5:22 pm Post subject: Re: Torque tube

Thanks, Roger, I'll keep checking your suggestions...... really don't want to build an engine myself (assuming I even could) so would love to find a screamin' deal - well in aviation, I'll settle for a good deal....



Dave

hills(at)sunflower.com
Guest

Posted: Sat Dec 13, 2008 7:53 pm Post subject: Torque tube

Check barnstormers under piston engines, I saw a couple goodies just today.



Roger





--

vayuwings

Joined: 12 Dec 2008
Posts: 16
Location: arizona

Posted: Mon Dec 22, 2008 11:28 am Post subject: Re: Torque tube

Hey all - 

For anyone interested in my previous torque tube question, I have heard from Zac and they stated, as I conjectured also, that considering the aileron cables can be lengthened/adjusted/shortened to the rear flange on the tube and the angle of the error (I've since confirmed it's 6 or 7 degrees off) is small there should be no problem with the throw for the ailerons.

They offered that I could send it back for a replacement...... I'm not sure that I will since I've confirmed only 6 degrees off, with the trouble of the shipping, etc. Tho not a perfect piece, if it's safe it won't be seen at least so I'm leaning toward keeping it.

Anyhoo there it is, fyi......



Dave

XL build

arno7452(at)bellsouth.net
Guest

Posted: Mon Dec 22, 2008 11:40 am Post subject: Torque tube

I had same problem with my 701.  You would think this is an easy jig to 

ensure exact measurement.  Someone is not watching the store.

Ken

CH701 N701LK



do not archive



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