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mod 77 pushrod rudder drive query

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rowlandcarson(at)gmail.co
Guest

Posted: Fri Oct 03, 2014 11:48 am Post subject: mod 77 pushrod rudder drive query

I’m installing the Mod 77 pushrod rudder drive as originated by Graham Singleton. In the instructions (both Graham’s version and the later version from the factory) it offers the possibility of having turnbuckles in the tailwheel cables for ease of adjustment. I had originally felt this was not necessary, but later decided it would be a good idea after all. Having just bonded in the sternpost, I had to get at the installed cable thimbles through the access panel. It was not difficult to cut off the cable from the thimble round the spring with a Dremel cut-off wheel, and not too awkward to install the fork end of a turnbuckle in its place on the aft end of the spring.



However, when I exercised the bellcrank, the nicopress sleeve on the aft end of the turnbuckle assembly is only about 20mm from the forward face of the sternpost (even without compressing the spring on that side). The holes I made for the cables through the fuselage side emerge on the inside only just clear of the sternpost. With the turnbuckle travelling so far aft, that doesn’t seem to leave enough room for the plastic fairlead (and the layup to keep it in place).



I recall now seeing one or two Europas at the Rally with Graham’s rudder drive and turnbuckles out in the breeze just forward of the tailwheel, and I think I now know why!



Before I start the fiddly job of re-making cable thimbles on the springs (and throwing away the expensive turnbuckle fork ends), can anyone offer thoughts on how the tailwheel cable turnbuckles can operate inside the fuselage without fouling the plastic fairleads?



in friendship



Rowland



| Rowland Carson          ... that's Rowland with a 'w' ...

| <rowlandcarson(at)gmail.com>            http://www.rowlandcarson.org.uk

| Skype, Twitter: rowland_carson      Facebook: Rowland Carson

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Fred Klein

Joined: 26 Mar 2012
Posts: 503

Posted: Fri Oct 03, 2014 3:23 pm Post subject: mod 77 pushrod rudder drive query

On Oct 3, 2014, at 12:49 PM, Rowland Carson <rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)> wrote:

 	  Quote: 	
		  Before I start the fiddly job of re-making cable thimbles on the springs (and throwing away the expensive turnbuckle fork ends), can anyone offer thoughts on how the tailwheel cable turnbuckles can operate inside the fuselage without fouling the plastic fairleads? 	




Rowland…I too envisioned the aft turnbuckles within the fuselage, but after encountering the identical problem you face, I also had concerns about my ability to make adjustments to them plus the essential safety-wiring…consequently, my aft turnbuckles will be flying in the breeze…F.



 [quote][b]

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Duncan McFadyean

Joined: 18 Jan 2011
Posts: 219

Posted: Fri Oct 03, 2014 11:10 pm Post subject: mod 77 pushrod rudder drive query

Operationally with the Singleton tailwheel crank, I never had difficulty with adjustment by means of adding/removing the standard folded-steel chain links. It can be a bit of a fiddle through a small inspection hole, but so is re-wirelocking turnbuckles!

    

    

   DMcF.

   

 

   

 

 --

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alan.twigg775(at)gmail.co
Guest

Posted: Fri Oct 03, 2014 11:13 pm Post subject: mod 77 pushrod rudder drive query

Rowland, I was also determined to clean up externals, after swaging I too discovered lack of space. I have elected to put turnbuckles with locking pins inside the fuselage opting for changing one end of the turnbuckle to fit directly to the pushrods horn. I will live with having the springs gathering grass where, at least I can check tension visually.

This decision is so new that the fork end Turnbuckle parts had not arrived yesterday when I left for a Scottish Gliding and walking holiday. You are welcome to visit Bicester from Sunday 12th. You may be engaged to help me fit them though.

Regards Alan Twigg



Sent from my iPhone



On 4 Oct 2014, at 00:22, Fred Klein <fklein(at)orcasonline.com (fklein(at)orcasonline.com)> wrote:

[quote]

On Oct 3, 2014, at 12:49 PM, Rowland Carson <rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)> wrote:

 	  Quote: 	
		  Before I start the fiddly job of re-making cable thimbles on the springs (and throwing away the expensive turnbuckle fork ends), can anyone offer thoughts on how the tailwheel cable turnbuckles can operate inside the fuselage without fouling the plastic fairleads? 	




Rowlandâ€¦I too envisioned the aft turnbuckles within the fuselage, but after encountering the identical problem you face, I also had concerns about my ability to make adjustments to them plus the essential safety-wiringâ€¦consequently, my aft turnbuckles will be flying in the breezeâ€¦F.



  	  Quote: 	
		  



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[b]

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rogersheridan(at)gmail.co
Guest

Posted: Sat Oct 04, 2014 12:32 am Post subject: mod 77 pushrod rudder drive query

I have threaded ends pre-swaged onto the cables followed by clevis  forks. This looks fine but not yet tested in anger.

Please advise if you need a photo.

Rog.



Sent from my iPhone



On 4 Oct 2014, at 08:12, alan.twigg775(at)gmail.com (alan.twigg775(at)gmail.com) wrote:

[quote]Rowland, I was also determined to clean up externals, after swaging I too discovered lack of space. I have elected to put turnbuckles with locking pins inside the fuselage opting for changing one end of the turnbuckle to fit directly to the pushrods horn. I will live with having the springs gathering grass where, at least I can check tension visually.

This decision is so new that the fork end Turnbuckle parts had not arrived yesterday when I left for a Scottish Gliding and walking holiday. You are welcome to visit Bicester from Sunday 12th. You may be engaged to help me fit them though.

Regards Alan Twigg



Sent from my iPhone



On 4 Oct 2014, at 00:22, Fred Klein <fklein(at)orcasonline.com (fklein(at)orcasonline.com)> wrote:

 	  Quote: 	
		  

On Oct 3, 2014, at 12:49 PM, Rowland Carson <rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)> wrote:

 	  Quote: 	
		  Before I start the fiddly job of re-making cable thimbles on the springs (and throwing away the expensive turnbuckle fork ends), can anyone offer thoughts on how the tailwheel cable turnbuckles can operate inside the fuselage without fouling the plastic fairleads? 	




Rowlandâ€¦I too envisioned the aft turnbuckles within the fuselage, but after encountering the identical problem you face, I also had concerns about my ability to make adjustments to them plus the essential safety-wiringâ€¦consequently, my aft turnbuckles will be flying in the breezeâ€¦F.



  	  Quote: 	
		  



D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

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[b]

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davidjoyce(at)doctors.org
Guest

Posted: Sat Oct 04, 2014 12:38 am Post subject: mod 77 pushrod rudder drive query

Fred, A pity! They will pick up large amounts of grass on 

green runways! David Joyce, G-XSDJ, with internal 

turnbuckles

On Fri, 3 Oct 2014 16:22:30 -0700

  Fred Klein <fklein(at)orcasonline.com> wrote:

 	  Quote: 	
		   

 On Oct 3, 2014, at 12:49 PM, Rowland Carson 

<rowlandcarson(at)gmail.com> wrote:

 

> Before I start the fiddly job of re-making cable 

>thimbles on the springs (and throwing away the expensive 

>turnbuckle fork ends), can anyone offer thoughts on how 

>the tailwheel cable turnbuckles can operate inside the 

>fuselage without fouling the plastic fairleads?

 

 Rowland…I too envisioned the aft turnbuckles within the 

fuselage, but after encountering the identical problem 

you face, I also had concerns about my ability to make 

adjustments to them plus the essential 

safety-wiring…consequently, my aft turnbuckles will be 

flying in the breeze…F.

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grahamsingleton(at)btinte
Guest

Posted: Sat Oct 04, 2014 1:04 am Post subject: mod 77 pushrod rudder drive query

I think I prefer the srings inside and the turnbuckles outside. Also, imho the steel folded steel

clips do ocasionally let go and you suddenly find you have no tailwheel steering.

I prefer shackles

Graham





        From: David Joyce <davidjoyce(at)doctors.org.uk>

 To: europa-list(at)matronics.com 

 Sent: Saturday, 4 October 2014, 9:36

 Subject: Re: mod 77 pushrod rudder  drive query

  

 

--> Europa-List message posted by: "David Joyce" <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)>



Fred, A pity! They will pick up large amounts of grass on 

green runways! David Joyce, G-XSDJ, with internal 

turnbuckles

On Fri, 3 Oct 2014 16:22:30 -0700

  Fred Klein <fklein(at)orcasonline.com (fklein(at)orcasonline.com)> wrote:

 	  Quote: 	
		   

 On Oct 3, 2014, at 12:49 PM, Rowland Carson 

<rowlandcarson(at)gmail.com (rowlandcarson(at)gmail.com)> wrote:

 

> Before I start the fiddly job of re-making cable 

>thimbles on the springs (and throwing away the expensive 

>turnbuckle fork ends), can anyone offer thoughts on how  

>the tailwheel cable turnbuckles can operate inside the 

>fuselage without fouling the plastic fairleads?

 

 Rowlandâ€¦I too envisioned the aft turnbuckles within the 

fuselage, but after encountering the identical problem 

you face, I also had concerns about my ability to make 

adjustments to them plus the essential 

safety-wiringâ€¦consequently, my aft turnbuckles will /www.matronics.com/Navigator?Europa-List" ="http://forums.matronics.com/" target="_blank">http://forums.matronics                    &nbsptronics.com/contribution" target="_blank">http://www.matronics.com/contri================


	




 

  

  

 [quote][b]

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