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Dimension Requested for Trim Tab Link Rod Fork insert

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tonyrenshaw268(at)gmail.c
Guest

Posted: Fri Jul 25, 2014 2:41 pm Post subject: Dimension Requested for Trim Tab Link Rod Fork insert

Gidday,Well, it seems my Trim Tab Link Rod, TS05 is conflicting with my plastic forks of the servo, like many others. I think I have to eat humble pie here. The issue is that the vertical of the two rivets that hold the insert AN490 HT8P in position, its head is the culprit. It looks like to me the easiest fix is to take a little of the fork excess plastic away, but there isn’t much, and any finer adjustment needs to be made by removing the offending rivet, and repositioning it. Thats my current plan, and to that end I’d like to ask what the length of the insert is that is within my T bar tube. I am thinking of removing the offending rivet and repositioning 45 degrees offset. I would like to double the spacing that exists between the current rivets, in side elevation, for the placement of the next one, so I have double the metal since I have half the offset, as the holes from the removed rivet will have created a wall weakness. Still, there shouldn’t be a ridiculous amount of load on these, and the second one is probably more of a secondary means of attachment, aviation double check anyway. 

 If anyone has not constructed the T bar, can I please ask for the insert length? I will ask Europa if the list is unable to help. Thanks.

Regards

Tony Renshaw

 [img]cid:FE55A986-6FA7-40EA-9D43-CFF60552058C[/img][img]cid:757A8C8B-71CA-4F9A-8C5E-1882D61C125A[/img]

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rowlandcarson(at)gmail.co
Guest

Posted: Sat Jul 26, 2014 2:04 am Post subject: Dimension Requested for Trim Tab Link Rod Fork insert

On 25 Jul 2014, at 23:34, Tony Renshaw wrote:



 	  Quote: 	
		   If anyone has not constructed the T bar, can I please ask for the insert length?


	


Tony - 



I am sorry I can't offer the information you seek. I agree that the rivets are a problem; I solved it in my case by fitting them at 45 degrees - see:



<http://www.rowlandcarson.org.uk/aviation/europa_435/201203.php> and scroll down to day 21



In your situation, I'd be inclined to order a new link rod etc and re-make it as I'm not sure that there would be enough meat left to support another rivet.



While you're at it, you may also fall foul (!) of another issue - you'll see my solution to that on this page:



<http://www.rowlandcarson.org.uk/aviation/europa_435/bellcrank_relieved.php>



 	  Quote: 	
		   I will ask Europa if the list is unable to help. Thanks.

 Regards

 Tony Renshaw

 

  <Tailplane_Trim_Tab_T_bar_fork_attach_rivet_issue.jpeg><AN490_HT8P_Insert_Length_Query.jpeg>


	


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

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

| Skype, Twitter: rowland_carson      Facebook: Rowland Carson

| pictures: http://picasaweb.google.com/rowlandcarson

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jan_de_jong(at)casema.nl
Guest

Posted: Sat Jul 26, 2014 2:44 am Post subject: Dimension Requested for Trim Tab Link Rod Fork insert

Tony,



My to-be-inserted length is 16.1 +/- 0.2 mm.



Thank you for bringing up the potential issue..



Jan de Jong

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tonyrenshaw268(at)gmail.c
Guest

Posted: Sat Jul 26, 2014 6:47 pm Post subject: Dimension Requested for Trim Tab Link Rod Fork insert

Hi Craig,If you shorten the link rod, don’t you change the geometry of the tab displacement? I know Bob Harrison did a similar thing, and he hasn’t had any problems with the consequence. I will have to take a closer look, as it is an intricate mechanism, and I take my hat off to Ivan and co for designing it. How you do that makes me envious. I might get another link rod and experiment. Scott from Ray Allen is very helpful, so if I stuff it up I’m sure he will come to the rescue

Thanks for replying.

Regards

Tony Renshaw



On 27 Jul 2014, at 11:47 am, craig <craigb(at)onthenet.com.au (craigb(at)onthenet.com.au)> wrote:

[quote]Tony, have a look at the link rod between the servo and the bell crank

I had a long hard look at it and ended up shortening that link rod about 2mm, trimming the plastic will fix the issue, mine only needed about 2mm total to gain

The required clearance, I filed a bit off each one and problem solved, prior to that 2mm it would foul

And try to push the servo up at full travel

 

Hope this helps, it may be another way to attack the problem

 

Regards

craig

 

From: owner-europa-list-server(at)matronics.com (owner-europa-list-server(at)matronics.com) [mailto:owner-europa-list-server(at)matronics.com (owner-europa-list-server(at)matronics.com)] On Behalf Of Tony Renshaw

Sent: Saturday, July 26, 2014 8:35 AM

To: europa-list(at)matronics.com (europa-list(at)matronics.com)

Subject: Dimension Requested for Trim Tab Link Rod Fork insert

 

Gidday,

Well, it seems my Trim Tab Link Rod, TS05 is conflicting with my plastic forks of the servo, like many others. I think I have to eat humble pie here. The issue is that the vertical of the two rivets that hold the insert AN490 HT8P in position, its head is the culprit. It looks like to me the easiest fix is to take a little of the fork excess plastic away, but there isn’t much, and any finer adjustment needs to be made by removing the offending rivet, and repositioning it. Thats my current plan, and to that end I’d like to ask what the length of the insert is that is within my T bar tube. I am thinking of removing the offending rivet and repositioning 45 degrees offset. I would like to double the spacing that exists between the current rivets, in side elevation, for the placement of the next one, so I have double the metal since I have half the offset, as the holes from the removed rivet will have created a wall weakness. Still, there shouldn’t be a ridiculous amount of load on these, and the second one is probably more of a secondary means of attachment, aviation double check anyway. 



 If anyone has not constructed the T bar, can I please ask for the insert length? I will ask Europa if the list is unable to help. Thanks.



Regards



Tony Renshaw



 



 <image001.jpg><image002.jpg>



No virus found in this message.

Checked by AVG - www.avg.com

07/24/14

[b]

- The Matronics Europa-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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grahamsingleton(at)btinte
Guest

Posted: Sun Jul 27, 2014 1:19 am Post subject: Dimension Requested for Trim Tab Link Rod Fork insert

Tony

long time ago but I shortened the plastic a couple of mm. 

Maybe the simple way would be to assemble the whole thing without fixing

the servo to the bulkhead, then work out where it needs to go without

causing the fouling

Graham





        From: Tony Renshaw <tonyrenshaw268(at)gmail.com>

 To: europa-list(at)matronics.com 

 Sent: Sunday, 27 July 2014, 3:46

 Subject: Re:  Dimension Requested for Trim Tab Link Rod Fork insert

  

 

Hi Craig,If you shorten the link rod, donâ€™t you change the geometry of the tab displacement? I know Bob Harrison did a similar thing, and he hasnâ€™t had any problems with the consequence. I will have to take a closer look, as it is an intricate mechanism, and I take my hat off to Ivan and co for designing it. How you do that makes me envious. I might get another link rod and experiment. Scott from Ray Allen is very helpful, so if I stuff it up Iâ€™m sure he will come to the rescue

Thanks for replying.

Regards

Tony Renshaw



On 27 Jul 2014, at 11:47 am, craig <craigb(at)onthenet.com.au (craigb(at)onthenet.com.au)> wrote:

 	  Quote: 	
		  Tony, have a look at the link rod between the servo and the bell crank

I had a long hard look at it and ended up shortening that link rod about 2mm, trimming the plastic will fix the issue, mine only needed about 2mm total to  gain

The required clearance, I filed a bit off each one and problem solved, prior to that 2mm it would foul

And try to push the servo up at full travel

 

Hope this helps, it may be another way to attack the  problem

 

Regards

craig

 

From: owner-europa-list-server(at)matronics.com (owner-europa-list-server(at)matronics.com) [mailto:owner-europa-list-server(at)matronics.com (owner-europa-list-server(at)matronics.com)] On Behalf Of Tony  Renshaw

Sent: Saturday, July 26, 2014 8:35 AM

To: europa-list(at)matronics.com (europa-list(at)matronics.com)

Subject: Dimension Requested for Trim Tab Link Rod Fork insert

  

Gidday,

Well, it seems my Trim Tab Link Rod, TS05 is conflicting with my plastic forks of the servo, like many  others. I think I have to eat humble pie here. The issue is that the vertical of the two rivets that hold the insert AN490 HT8P in position, its head is the culprit. It looks like to me the easiest fix is to take a little of the fork excess plastic away, but there isnâ€™t much, and any finer adjustment needs to be made by removing the offending rivet, and repositioning it. Thats my current plan, and to that end Iâ€™d like to ask what the length of the insert is that is within my T bar tube. I am thinking of removing the offending rivet and repositioning 45 degrees offset. I would like to double the spacing that exists between the current rivets, in side elevation, for the placement of the next one, so I have double the metal since I have half the offset, as the holes from the removed rivet will have created a wall weakness. Still, there shouldnâ€™t be a ridiculous amount of load on these, and the second one is probably more of a secondary means of  attachment, aviation double check anyway. 



 If anyone has not constructed the T bar, can I please ask for the insert length? I will ask Europa if the list is unable to help. Thanks.



Regards



Tony Renshaw



  



 <image001.jpg><image002.jpg>



No virus found in this message.

Checked  by AVG - www.avg.com

07/24/14

http://www.matronics.com/Navigator?Europa-Listofollow" target="_blank" href="http://www.matronics.com/contribution">h

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