VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Main > RV General Discussion/News
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

View Poll Results: What did you find when you checked the retaining nut?
It was loose. 7 17.07%
It was on tight. 34 82.93%
Voters: 41. You may not vote on this poll

Reply
 
Thread Tools Search this Thread Display Modes
  #21  
Old 03-05-2006, 04:21 PM
airtime's Avatar
airtime airtime is offline
 
Join Date: Jun 2005
Posts: 40
Default SB - left tank

Pulled the left side today. Fitting could be unthreaded by hand.
I can only assume when I checked the QB wing for the anti-rotation bracket
I failed to tighten the nut. My confidence is not running high today.

I guess I'm grateful I used the cork and rubber gasket last time. I just hope
there's no next time, I have them gooped on well this time.

Rob H - Nampa, Idaho
Reply With Quote
  #22  
Old 03-05-2006, 06:35 PM
Jaws Jaws is offline
 
Join Date: Jan 2005
Location: Out in the woods...south of Booneville MS
Posts: 68
Default SB Pick up Poll

Started and almost finished today after flying this morning.

I marked "loose" because I was able to put at least half a turn on each B-nut before the were tight. Additionally, both vent tube lines connecting to inboard rib took half a turn to be tight.

I pulled both tanks to do the job, which made it relatively easy. It has taken about 3 hours (which included lots of coffee drinking and thinking) so far. A fellow DVT RVer helped with first side removal. All that is left is to reinstall the tanks (about another hour).

I'm glad I made the effort!

Larry
RV6AQB 375hrs
176A

Last edited by Jaws : 03-05-2006 at 07:00 PM.
Reply With Quote
  #23  
Old 03-05-2006, 07:30 PM
Dale Dale is offline
 
Join Date: Jan 2005
Posts: 12
Default fuel pickup tube B nut

I pulled both tanks off Saturday, and today with the help of DAR Tim Mahoney, I installed the anti-rotation brackets to both tank tubes, safetytied the B nuts, and prosealed the whole works. All fittings were tight when I tore it all apart, but I now feel very sure that nothing will ever come loose. I figure it will have taken 8 to 10 hours to complete the {fix} when the tanks are reinstalled.
I was real reluctant to unscrew 64 or 65 screws per tank, wondering how the paint would crack. But, after the first few, I gained confidence, and every thing worked out fine.
I will use stainless steel screws to install the tanks. I think they will look cool.

Dale
565DM
Reply With Quote
  #24  
Old 03-05-2006, 08:03 PM
RV9AFlyer RV9AFlyer is offline
 
Join Date: Feb 2006
Posts: 33
Default Another loose QB

OK, so it looks like Larry (call-sign Jaws) RV-6A Quickbuild fittings were somewhat loose, too.

Larry, did the RV-6A QB ship with already installed pickup tubes, like the 7, 8, and 9'er?

John

Last edited by RV9AFlyer : 03-05-2006 at 08:09 PM.
Reply With Quote
  #25  
Old 03-05-2006, 09:04 PM
Jaws Jaws is offline
 
Join Date: Jan 2005
Location: Out in the woods...south of Booneville MS
Posts: 68
Default

John,
Don't know...I didn't build airplane.
Larry
Reply With Quote
  #26  
Old 03-05-2006, 10:51 PM
Mustang Mustang is offline
 
Join Date: Jan 2005
Location: Vancouver, B.C.
Posts: 133
Default Yup! Mine is a Quickbuild

I was probably the first guy to check in with a loose nut?!?!? but I didn't bother noting that it was a QB. I have drilled the nut and the anti-rotation bracket but will probably not do the weird and wonderfull lockwiring pattern shown in the AD. Jeez! There are easier ways than that. I will do it like I do my sump drain, oil pressure regulator, or gascolator drain.

The guy who designed the AD lockwiring pattern must have stock in the Stainless Wire Company!? We are just trying to keep the nut from rotating (backing off) one way here.

Cheers, Pete
Reply With Quote
  #27  
Old 03-06-2006, 05:55 AM
rglick rglick is offline
 
Join Date: Jan 2005
Location: Slinger, Wisconsin
Posts: 122
Default Fuel Pick-up QB and Safety wire proc

I completed my modification last night and found something QB owners might want to check. I checked the location of the pick-up tube prior to removing it and found that the tube was almost 1" from the bottom of the tank. I checked the plans and it clearly stated that it should be on the bottom. A few slight bends an both are on the bottom and just inside the drain hole. One thing I did change was the way the plans had shown the safety wire. I drilled a small hole in the anti-rotation bracket then wired off to that. A much more professional proceedure and tighter. Never a chance of backing off.
__________________
Richard Glick
RV7A, Tech Counselor #5416
Delta, Utah
Reply With Quote
  #28  
Old 03-11-2006, 06:59 PM
DickF's Avatar
DickF DickF is offline
 
Join Date: Aug 2005
Location: McKinney, TX
Posts: 52
Default

Noticed the numbers on this poll haven't changed recently - anyone else get a chance to check out their fuel pickup?
Reply With Quote
  #29  
Old 03-11-2006, 07:28 PM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
Default I did mine the other day while the plane is grounded anyway...

Not because I was worried about them as I prosealed them when I installed them the first time but it was an opportunity that "made" me go in the tank to check the pick up finger screens which is something I've been wanting to do but could never quite muster the ambititon. Everything was fine, no debris at all in the screens and so I went ahead and verified the fitting were still tight and then safetied them up. I also drilled a hole in the rotation bracket rather than use the fitting to wrap the wire to. I used proseal to install the plate the first time and they were a bear to get off but once you get them started it's not to bad. The plane has been grounded for 2 weeks now doing the nose gear mod (shorten front leg and install new fork) which I really wanted to do (been waiting on Langair machine to return my leg for a week and a half now). The NLG mod and trimming up the nose gear fairing will provide at least another inch of ground clearance on the front. This in my opinion is much more of a necessity for us nose draggers than the fuel mod, but while she was out of service anyway I figured it was a good time to do all the little things. Plus god forbid something happens the plane is now in "compliance" with all Van's SB's.
Reply With Quote
  #30  
Old 03-12-2006, 08:13 PM
akarmy's Avatar
akarmy akarmy is offline
 
Join Date: Jan 2005
Location: Auburn, WA
Posts: 668
Smile

Quote:
Originally Posted by walter
If you've complied with the SB, what did you find?
Well, I dove in today and fixed up my tanks to comply with the SB.

First, it took 7 hours to do both tanks, including drainging 7 gallons of gas, removing the intersection fairings and reinstalling everything.

I'll give some of the rest of you a bit more detail as I sure wanted some before I started... Tools required. 1 stiff and 1 flexable 1 1/4" putty knives. a 1/2" x 3/4" block of hardwood. Hammer, 3/8" short handled socket set with 1/4" socket. Short phillips ACR bit to go in the 1/4" socket. Make sure the ratchet has a smooth top (mine has the release button on the back) so you can apply pressure with one hand while turning it. Waggner heat gun.

Using the ratchet all of the screws came out with no trouble at all. Very easy overall. So now my confidence is high... Hum, how to get the putty knife started... There is only one location that you can get it started, that's the lower front section. Everywhere else has too large of a flange on the edge of the tanks (at least on the RV9 tanks). A little heat and a lot of pushing with the flexable knife got it started. Now others have said to slice through the proseal. That works for about 2" in each direction, then your knife bottoms out and there is no other way to get leverage on it.

After lots of head scratching I finally started prying on the access cover with my stiff putty knife. By applying heat, and simply prying up and outward it started to let loose. I pryed the first side that I had access to out enough to fit the 3/4" block of oak in place and hold it open. Then moving the knife and prying more with more heat the rest of the flange let go.

By now I figured I would have a taco from all the force needed to get it free, but the plate is still flat and unbent after the event. All my connections were still tight just as the day I built it... 450hrs and 3 years of flying. I drilled them and drilled the corner of the anti-rotation bracket as others have. Next was to clean up the proseal. Scraping with the putty knife and an exacto knife got most of it off, then some red scotch brite took the rest off nicely. Once the plate is done, then you need to clean the tank flange, bit harder, but not bad compared to what you've already done by now.

I got the single serving proseal from Vans so I would have a new batch. You simply mix it in the can it comes in. They have that down perfect as it was just enough with about a marble sized drop left when finished. Proseal on both the flange of the tank and the access cover, put it in place and put a touch of proseal on each screw as they get started. I used all new screws (just the same #8 screws) They were easy to get in place using the same ratchet.

All in all it was not that bad, but was the worst thing I've had to do since I started flying my 9A 3 years ago. Oh well... Good times! Now... How long does that proseal need to cure before filling those tanks?

Good luck with yours...
__________________
Andy Karmy
Covington WA

RV-8 - Flying!
RV-9A - sold

Dec 2019 Paid
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 04:56 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.