Matronics Email Lists :: View topic - Vertical Lower Cowl Pin Retainer?

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

Vertical Lower Cowl Pin Retainer?

Matronics Email Lists Forum Index -> RV10-List

View previous topic :: View next topic

Author Message

schmoboy

Joined: 26 Feb 2006
Posts: 130

Posted: Thu Jan 17, 2013 6:40 am Post subject: Vertical Lower Cowl Pin Retainer?

I am wondering what others have done with regards to using some sort of 

retainer on the vertical pins on the aft lower cowl.  I seen some use a 

hinge section like Mike did as seen here: 

http://www.azcloudflyer.com/finish/IMG_0291.jpg .



As there is nothing in the plans I am wondering if a retainer on these 

pins is really needed.  Those flying without retainers on these pins, 

have you seen them raise up at all?



-Sean #40303 (still trying to check off the cowl section)

Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Thu Jan 17, 2013 6:49 am Post subject: Vertical Lower Cowl Pin Retainer?

Sean,



I don't use anything to retain the pin and I've never seen movement.

---

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

Dick Sipp

Joined: 11 Jan 2006
Posts: 215
Location: Hope, MI

Posted: Thu Jan 17, 2013 7:01 am Post subject: Vertical Lower Cowl Pin Retainer?

Sean,



I don't use any type of retainer, have not seen any movement but I do 

usually hook that pin under the horizontal pin.



Dick Sipp



--

Tim Olson

Joined: 25 Jan 2007
Posts: 2872

Posted: Thu Jan 17, 2013 7:26 am Post subject: Vertical Lower Cowl Pin Retainer?

Mine raise up all the time.

To prevent damage and prevent raising, here's

what I do:



I put a big stripe of RTV on the engine mount,

so that the pin angle can't wear them.  Then, on the

engine mount I have an Adel clamp around it, nice

and snug.  The ear on the clamp I spin in place so that

when the pin tries coming up, it hits the clamp and is

stopped.  To remove the cowl I just spin the adel clamp

out of the way so I can pull the pin.



It's crude but it does work to keep the pin from rising.

Tim

On 1/17/2013 8:39 AM, Sean Stephens wrote:

 	  Quote: 	
		   



 I am wondering what others have done with regards to using some sort of

 retainer on the vertical pins on the aft lower cowl.  I seen some use a

 hinge section like Mike did as seen here:

 http://www.azcloudflyer.com/finish/IMG_0291.jpg .



 As there is nothing in the plans I am wondering if a retainer on these

 pins is really needed.  Those flying without retainers on these pins,

 have you seen them raise up at all?



 -Sean #40303 (still trying to check off the cowl section)

Mauledriver(at)nc.rr.com
Guest

Posted: Thu Jan 17, 2013 7:44 am Post subject: Vertical Lower Cowl Pin Retainer?

Mine do ride up and I don't have a good solution yet.  It will ride up 

about half way to that engine mount bolt shown in your photo.  That is, 

3 rivets.



What I've done is put some plastic tubing over the end so it doesn't 

scratch the engine mounts as it moves around.  The tubing also makes it 

easier to pull out.  I have about the same length 'tag end' that is 

shown in your photo.



I keep thinking that some tweak to the tag end will stop it from moving 

or at least let the horizontal pin stop it but no success so far.



I'm looking for ideas too.  Mike's solution looks solid but I'd like to 

avoid adding another 2 screws to the whole cowling removal process.  I 

think I will adoptit  unless others have better ideas.



BTW, I have the Aerosport Cowl pin covers for the horizontal pins.  I 

love the look and functionality of the these covers.  But the pin on one 

side vibrates and moves forward to hit the front of the cowl.  No 

problem but also no doubt that unretained, the pin would go right thru 

the propeller arc (I think someone here has proven that).



I love the whole cowl pin system (except of course for the bottom pins 

which I think most have eliminated).  A fresh coating of clean grease on 

re-installation makes them all easy to insert and remove.  Old dirty 

grease or just thrown off oil makes everything tough.



Bill



On 1/17/2013 9:39 AM, Sean Stephens wrote:

 	  Quote: 	
		   



 I am wondering what others have done with regards to using some sort 

 of retainer on the vertical pins on the aft lower cowl.  I seen some 

 use a hinge section like Mike did as seen here: 

 http://www.azcloudflyer.com/finish/IMG_0291.jpg .



 As there is nothing in the plans I am wondering if a retainer on these 

 pins is really needed.  Those flying without retainers on these pins, 

 have you seen them raise up at all?



 -Sean #40303 (still trying to check off the cowl section)

Tim Olson

Joined: 25 Jan 2007
Posts: 2872

Posted: Thu Jan 17, 2013 8:00 am Post subject: Vertical Lower Cowl Pin Retainer?

I almost forgot...I did add plastic tubing too.  It sometimes falls

off, but I did put some on the pin angle.

Tim

On 1/17/2013 9:43 AM, Bill Watson wrote:

 	  Quote: 	

 Mine do ride up and I don't have a good solution yet.  It will ride up

 about half way to that engine mount bolt shown in your photo.  That is,

 3 rivets.

 What I've done is put some plastic tubing over the end so it doesn't

 scratch the engine mounts as it moves around.  The tubing also makes it

 easier to pull out.  I have about the same length 'tag end' that is

 shown in your photo.

 I keep thinking that some tweak to the tag end will stop it from moving

 or at least let the horizontal pin stop it but no success so far.

 I'm looking for ideas too.  Mike's solution looks solid but I'd like to

 avoid adding another 2 screws to the whole cowling removal process.  I

 think I will adoptit  unless others have better ideas.

 BTW, I have the Aerosport Cowl pin covers for the horizontal pins.  I

 love the look and functionality of the these covers.  But the pin on one

 side vibrates and moves forward to hit the front of the cowl.  No

 problem but also no doubt that unretained, the pin would go right thru

 the propeller arc (I think someone here has proven that).

 I love the whole cowl pin system (except of course for the bottom pins

 which I think most have eliminated).  A fresh coating of clean grease on

 re-installation makes them all easy to insert and remove.  Old dirty

 grease or just thrown off oil makes everything tough.

 Bill

 On 1/17/2013 9:39 AM, Sean Stephens wrote:

> 

>

> I am wondering what others have done with regards to using some sort

> of retainer on the vertical pins on the aft lower cowl.  I seen some

> use a hinge section like Mike did as seen here:

> http://www.azcloudflyer.com/finish/IMG_0291.jpg .

>

> As there is nothing in the plans I am wondering if a retainer on these

> pins is really needed.  Those flying without retainers on these pins,

> have you seen them raise up at all?

>

> -Sean #40303 (still trying to check off the cowl section)

carl.froehlich(at)verizon
Guest

Posted: Thu Jan 17, 2013 9:22 am Post subject: Vertical Lower Cowl Pin Retainer?

I lock in the vertical cowl pins by having the side pins insert over the top of them.  The side pins are inserted from inside the plane.  They come through the firewall exactly over the top of the 90 degree bend at the top of the vertical pins.  This also eliminates the side pin retainer at the front of the cowl as the pins are retained inside the plane at the second bulkhead rib.



I did this on two planes and would (will?) do it again.



Carl



On Jan 17, 2013, at 11:00 AM, Tim Olson <Tim(at)MyRV10.com> wrote:



 	  Quote: 	
		   

 

 I almost forgot...I did add plastic tubing too.  It sometimes falls

 off, but I did put some on the pin angle.

 Tim

 

 

 On 1/17/2013 9:43 AM, Bill Watson wrote:

> 

> 

> Mine do ride up and I don't have a good solution yet.  It will ride up

> about half way to that engine mount bolt shown in your photo.  That is,

> 3 rivets.

> 

> What I've done is put some plastic tubing over the end so it doesn't

> scratch the engine mounts as it moves around.  The tubing also makes it

> easier to pull out.  I have about the same length 'tag end' that is

> shown in your photo.

> 

> I keep thinking that some tweak to the tag end will stop it from moving

> or at least let the horizontal pin stop it but no success so far.

> 

> I'm looking for ideas too.  Mike's solution looks solid but I'd like to

> avoid adding another 2 screws to the whole cowling removal process.  I

> think I will adoptit  unless others have better ideas.

> 

> BTW, I have the Aerosport Cowl pin covers for the horizontal pins.  I

> love the look and functionality of the these covers.  But the pin on one

> side vibrates and moves forward to hit the front of the cowl.  No

> problem but also no doubt that unretained, the pin would go right thru

> the propeller arc (I think someone here has proven that).

> 

> I love the whole cowl pin system (except of course for the bottom pins

> which I think most have eliminated).  A fresh coating of clean grease on

> re-installation makes them all easy to insert and remove.  Old dirty

> grease or just thrown off oil makes everything tough.

> 

> Bill

> 

> On 1/17/2013 9:39 AM, Sean Stephens wrote:

>> 

>> 

>> I am wondering what others have done with regards to using some sort

>> of retainer on the vertical pins on the aft lower cowl.  I seen some

>> use a hinge section like Mike did as seen here:

>> http://www.azcloudflyer.com/finish/IMG_0291.jpg .

>> 

>> As there is nothing in the plans I am wondering if a retainer on these

>> pins is really needed.  Those flying without retainers on these pins,

>> have you seen them raise up at all?

>> 

>> -Sean #40303 (still trying to check off the cowl section)

johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Fri Jan 18, 2013 5:53 am Post subject: Re: Vertical Lower Cowl Pin Retainer?

Mine have never moved and I don't have anything holding them. Although, my horizontal side pins do sit nicely over the top of the bend.

John

_________________
#40572 Phase One complete in 2011

rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Sat Jan 19, 2013 8:07 am Post subject: Re: Vertical Lower Cowl Pin Retainer?

Mine have not moved and bottom hinges have not cracked. All stock.

_________________
Wayne G.

schmoboy

Joined: 26 Feb 2006
Posts: 130

Posted: Sat Jan 19, 2013 2:01 pm Post subject: Vertical Lower Cowl Pin Retainer?

Thanks for the input everyone.  I have a feeling a lot has to do with 

how "perfect" you built those hinges.  If you got them just right, the 

pin is more likely to move.  If you are like me and you didn't get them 

exact, the pin is a little tight.



So what I'm saying is that those of you who don't see them move probably 

didn't get them perfect.   Ha!



-Sean #40303 (oil door)



On 1/19/13 10:07 AM, rv10flyer wrote:

 	  Quote: 	
		   



 Mine have not moved and bottom hinges have not cracked. All stock.



 --------

 Wayne G.

 12/01/2011

 TT= 95





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=392637#392637

rene(at)felker.com
Guest

Posted: Sat Jan 19, 2013 2:45 pm Post subject: Vertical Lower Cowl Pin Retainer?

I second that.....I am only half perfect.    But the amount that the pin

moves does not concern me......



Rene'

N423CF

801-721-6080



--

taildragon(at)msn.com
Guest

Posted: Sat Jan 19, 2013 5:12 pm Post subject: Vertical Lower Cowl Pin Retainer?

<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]-->  We need to be careful as to what we consider "perfect". Some might consider  perfect to be that the stress on each eye-let on each of the six hinges to  be the same and carrying their fair share of the load. That being the case, the  shorter hinge pins would be easier to pull than the longer hinge pins. Its  Saturday night...gee, I wish the wife felt better so we could go out instead  of being totally irrelevant on this list...

 [quote]   ---

johngoodman

Joined: 18 Sep 2006
Posts: 530
Location: GA

Posted: Sun Jan 20, 2013 6:26 am Post subject: Re: Vertical Lower Cowl Pin Retainer?

 	  Quote: 	
		  So what I'm saying is that those of you who don't see them move probably 

didn't get them perfect.  Ha! 	




OR, Maybe those of us who keep our props balanced and don't have nose shimmy, eliminated the vibration that causes the pins to move...  



John

_________________
#40572 Phase One complete in 2011

Display posts from previous:

	Matronics Email Lists Forum Index -> RV10-List	All times are GMT - 8 Hours
Page 1 of 1

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