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Attaching QB Fuse to Tailcone

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Phil.Perry(at)netapp.com
Guest

Posted: Sat Sep 26, 2009 5:44 am Post subject: Attaching QB Fuse to Tailcone

Getting ready to attach the QB fuselage to my tail cone.  

   

Section 29-2 describes drilling #30 pilot holes for the longeron attachment using the template provided.  

   

The only issue is that the QB doesn’t come with this template, so I have no clue where to drill these attachment holes.  

   

I know someone else has ran into this issue before me.  

   

Anyone get word from Vans on their proper location?  



 Thanks,  

Phil  

   

      [quote][b]

rleffler

Joined: 05 Nov 2006
Posts: 680

Posted: Sat Sep 26, 2009 6:15 am Post subject: Attaching QB Fuse to Tailcone

I just measured mine, which were drilled using the template.   The most aft hole is centered about 7/16” from the aft end of the longeron.  Each of the other holes appear to be on ¾” centers going forward.  

   

I don’t think the precise location is critical as long as appropriate spacing is provided.   Btw, you’ll be taking these bolts on and off multiple times later on during the build, so don’t torque seal them quite yet.  

   

bob  

       

From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Perry, Phil

 Sent: Saturday, September 26, 2009 9:28 AM

 To: rv10-list(at)matronics.com

 Subject: Attaching QB Fuse to Tailcone  

  

  

   

Getting ready to attach the QB fuselage to my tail cone.  

   

Section 29-2 describes drilling #30 pilot holes for the longeron attachment using the template provided.  

   

The only issue is that the QB doesn’t come with this template, so I have no clue where to drill these attachment holes.  

   

I know someone else has ran into this issue before me.  

   

Anyone get word from Vans on their proper location?  



 Thanks,  

Phil  

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      [quote][b]

_________________
Bob Leffler
N410BL - Phase I
http://mykitlog.com/rleffler

AirMike

Joined: 27 Feb 2007
Posts: 514
Location: Nevada

Posted: Sat Sep 26, 2009 6:56 am Post subject: Attaching QB Fuse to Tailcone

I would affirm Bob's observation. The position need not be exact. Just make sure that you are centered on the longerons so that you can get the nut on the bolt (and the bolt tightened).  Use the proper spacing to maintain the structural integrity of the union. Note the position of the rivets that go in on a perpendicular angle. You have to remove the bolts and nuts to get those rivets in later, or go with a pop rivet which is ugly.

_________________
See you OSH '18
Q/B - sold.

Phil.Perry(at)netapp.com
Guest

Posted: Sat Sep 26, 2009 8:44 am Post subject: Attaching QB Fuse to Tailcone

Thanks for the help Bob and Mike!



Can you tell how they determined the center line of the angle?



Does it look like they determined the center line by finding center on

the interior side of the angle or the exterior side?



The angle is 3/4" x 3/4" and 1/8" thick.



If they measured on the exterior and then drilled, the hole moves closer

to the bend by 1/8".



Thanks again...... 

Phil





--

rleffler

Joined: 05 Nov 2006
Posts: 680

Posted: Sat Sep 26, 2009 10:14 am Post subject: Attaching QB Fuse to Tailcone

It will be late tonight before I can measure.  I would center on the

interior side, since you need to ensure spacing for the washer.



--

_________________
Bob Leffler
N410BL - Phase I
http://mykitlog.com/rleffler

rleffler

Joined: 05 Nov 2006
Posts: 680

Posted: Sat Sep 26, 2009 11:16 am Post subject: Attaching QB Fuse to Tailcone

I was able to make the measurements before I left.  My holes are centered on

the outside of the angle, 3/8" from the inside edge of the longeron.



--

_________________
Bob Leffler
N410BL - Phase I
http://mykitlog.com/rleffler

nukeflyboy

Joined: 05 Jan 2008
Posts: 162
Location: Granbury, TX

Posted: Sat Sep 26, 2009 7:06 pm Post subject: Re: Attaching QB Fuse to Tailcone

I recall having a minor problem with my QB.  If all the holes on the skins don't line up perfectly check the longerons for interference.  They may be too long.  Trim a little off if needed.

_________________
Dave Moore
RV-6 built and sold
RV-10 built and flying

AirMike

Joined: 27 Feb 2007
Posts: 514
Location: Nevada

Posted: Sun Sep 27, 2009 11:04 am Post subject: Attaching QB Fuse to Tailcone

Check the manual on std aircraft construction and Van's instructions. The most important thing is to maintain structural integrity. If I recall correctly your holes should be no more than 1.5x the width of the hole from the edge. Like the prior post said leave enuf room for the washers and nut

_________________
See you OSH '18
Q/B - sold.

Phil.Perry(at)netapp.com
Guest

Posted: Sun Sep 27, 2009 3:43 pm Post subject: Attaching QB Fuse to Tailcone

You're right.  I was measuring mine last night and they're all too long.

Not by a little, but by a lot!!!  Almost 1.5 inches too long.  I can't

believe they couldn't even get close.



One of them is so long that it sticks into the baggage door opening...



I also found another stupid thing in the mix too.



Directly above the baggage door are a couple of pieces of angle.  You're

supposed to trim the bottom 3/8" off the entire length of the angle(s).

The goof balls just riveted the thing in place and never trimmed the

bottom flange down.  That's not going to be a fun one to fix.



Also notice several missing pieces that were supposed to be included in

the QB part (not in the inventory) and they're just not installed and

not on the inventory list either.



The work is generally pretty good and they're still saving me a bunch of

time, but their attention to detail is terrible.



Phil



--

rleffler

Joined: 05 Nov 2006
Posts: 680

Posted: Sun Sep 27, 2009 4:18 pm Post subject: Attaching QB Fuse to Tailcone

Certainly makes you wonder what other short cuts they took that you haven't

found yet......



I guess that is the advantage with normal builds, we only have one person to

blame and we know where all the skeletons lie.



Do not archive



--

_________________
Bob Leffler
N410BL - Phase I
http://mykitlog.com/rleffler

Phil.Perry(at)netapp.com
Guest

Posted: Sun Sep 27, 2009 5:25 pm Post subject: Attaching QB Fuse to Tailcone

Yeah...  Another one that I found is on the control stick mounts.



If you recall, the mounts for the control column's require trimming.

See 28-4 Step 1.



They didn't even bother to remove the hatched area and just put them

into the airplane.  I just left them because I don't think it will cause

any problems - except weight.  If my baby turns out being a little

fatter than all of her siblings, I might go back in and look for spots

like that to remove some weight.



I also decided to check the accuracy of their torque wrenches.



..............that's when I decided that they don't allow them onto the

factory floor.



Phil





--

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Sun Sep 27, 2009 6:54 pm Post subject: Attaching QB Fuse to Tailcone

Be sure to give Van's your comments with regards to the workmanship as 

well as the shortages, in writing.



Perry, Phil wrote:

[quote] 

 

 You're right.  I was measuring mine last night and they're all too long.

 Not by a little, but by a lot!!!  Almost 1.5 inches too long.  I can't

 believe they couldn't even get close.

 

 One of them is so long that it sticks into the baggage door opening...

 

 I also found another stupid thing in the mix too.

 

 Directly above the baggage door are a couple of pieces of angle.  You're

 supposed to trim the bottom 3/8" off the entire length of the angle(s).

 The goof balls just riveted the thing in place and never trimmed the

 bottom flange down.  That's not going to be a fun one to fix.

 

 Also notice several missing pieces that were supposed to be included in

 the QB part (not in the inventory) and they're just not installed and

 not on the inventory list either.

 

 The work is generally pretty good and they're still saving me a bunch of

 time, but their attention to detail is terrible.

 

 Phil

 

 

 

 --

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

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