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  #51  
Old 11-27-2012, 08:11 PM
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Tony_T Tony_T is offline
 
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Actually Wayne, aviation brake fluid is a hydraulic oil and not the same evil stuff that you put in your car. It doesn't take off paint. You did use the right stuff, right?

Tony
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  #52  
Old 11-27-2012, 10:16 PM
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Location: Hubbard Oregon
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Quote:
Originally Posted by yankee-flyer View Post
Next question is how to drain the brake lines so they can be disconnected without dripping fluid inside the fuselage.
The process described in the S.B. instructions actually works quite well.....
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  #53  
Old 11-27-2012, 11:31 PM
LittleJoeA LittleJoeA is offline
 
Join Date: Nov 2010
Location: Livermore, CA
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Default SB 12-11-09 Posted

The 30 page SB 12-11-09 is now posted on Van's web site.

http://www.vansaircraft.com/pdf/sb12-11-09.pdf

I am right at the point where I was going to attach the landing geat and of course I'm waiting for the upgrade kit. Maybe in time for a Christmas present.
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RV-12, S/N 120419
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  #54  
Old 11-28-2012, 04:44 AM
rgmwa rgmwa is offline
 
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Location: Perth, Western Australia
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Quote:
Originally Posted by LittleJoeA View Post
The 30 page SB 12-11-09 is now posted on Van's web site.
I can't see any mention in the SB 12-11-9 documentation about the slight step that I and a number of others have reported at the inner edge of the cutout in the channel for the AN5-22A attach bolts. The step prevents the washer under the nut from bearing uniformly against the flat face of the channel. Is this not considered to be a problem?

I raised this with Vans some time ago and was told to file it flat, but that is simply not practical in the confined space available, and certainly not with any accuracy.
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  #55  
Old 11-28-2012, 06:21 AM
Bob Kibby Bob Kibby is offline
 
Join Date: May 2008
Location: Arlington, Texas
Posts: 127
Default Step in C-Section Observations

It is my understanding that the SB fix has taken the "step" issue out of the problem. It is also (IMHO) why the doublers are located on the bottom of the C-Section instead of the top of the C-Section which would have been an easier installation. I have noticed from the photos of C-Section cracks (Fig 16 of the SB for example) that all of them appear to have a "step" in the bolt hole cut-out area. I have a step at all 4 bolt hole cut-outs and have 2 cracks at the right forward bolt hole and 1 crack at the left forward bolt hole. The "step" may not be the only reason that some of us have cracks but I do believe that it is a significant contributor to our landing gear damage. Maybe a "structures guy" could comment on my speculation. I have received the SB Kit and it looks stout! Bob Kibby "N712BK"
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  #56  
Old 11-28-2012, 10:52 AM
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Dgamble Dgamble is offline
 
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Default Page 16 of 30

Step 32: Add bevels to the four corners of the U-1202 Outboard Main Gear Attach Brackets.

Has anyone done this yet, and if so, how? My first inclination is to take the grinding wheel to it, but my first inclination is almost always wrong.

Problem here is that I don't have a Plan B.
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  #57  
Old 11-28-2012, 11:11 AM
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Gagarin737 Gagarin737 is offline
 
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I taped off the 1/4" and used a grinding wheel. I polished the corners with a file and the scotch brite wheel.

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  #58  
Old 11-28-2012, 11:14 AM
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Quote:
Originally Posted by Dgamble View Post
Step 32: Add bevels to the four corners of the U-1202 Outboard Main Gear Attach Brackets.

Has anyone done this yet, and if so, how? My first inclination is to take the grinding wheel to it, but my first inclination is almost always wrong.

Problem here is that I don't have a Plan B.
A somewhat course belt (60 - 80 grit) on a belt sander will work quite well (if you are not in a huge hurry). Have a container of water to dip the parts in occasionally to keep them from getting excessively hot.
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  #59  
Old 11-28-2012, 11:41 AM
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DonFromTX DonFromTX is offline
 
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I see that people with cracks in the center channel have to stop drill them, then take photos and send to Vans for instructions. I hope those who do this share the "fix" from Vans.
I am still dreaming of a method to smooth that lip easily.
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  #60  
Old 11-28-2012, 11:47 AM
rgmwa rgmwa is offline
 
Join Date: Feb 2010
Location: Perth, Western Australia
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Quote:
Originally Posted by Bob Kibby View Post
It is my understanding that the SB fix has taken the "step" issue out of the problem. It is also (IMHO) why the doublers are located on the bottom of the C-Section instead of the top of the C-Section which would have been an easier installation. I have noticed from the photos of C-Section cracks (Fig 16 of the SB for example) that all of them appear to have a "step" in the bolt hole cut-out area. I have a step at all 4 bolt hole cut-outs and have 2 cracks at the right forward bolt hole and 1 crack at the left forward bolt hole. The "step" may not be the only reason that some of us have cracks but I do believe that it is a significant contributor to our landing gear damage. Maybe a "structures guy" could comment on my speculation. I have received the SB Kit and it looks stout! Bob Kibby "N712BK"
That's what I was expecting, but I can't get my fuzzy "structures" head around how this takes the step issue out of it (home with the flu). I'll go back and have another look.
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