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-   -   Check those AFT Spar bolts (https://vansairforce.net/community/showthread.php?t=143315)

JonJay 11-02-2016 11:44 AM

Quote:

Originally Posted by az_gila (Post 1123712)
That may be what they provided, but the -6 plans on sheet 46 have always specified a drilled bolt.

The early plans called for a AN5-7 bolt, AN310-5 nut and a AN960-519 washer.

A later edit in 1997 changed it to a AN5-10 bolt and added the cotter pin.

In 2001 the number of washers call out was increased to 3.

A drilled bolt has always been specified for that location on the -6.

.... I said that Gil. But if they kept supplying the wrong hardware, in the right bag, it makes sense why Vic see's so many of these installed. I have a hard time believing that so many would simply substitute without a reason if the right hardware was in the kit. Assumptions would be made....
It was a long time ago, but I questioned the factory on this. Since it was a long time ago, and said person no longer there, I will just let rest what they told me. It is a simple thing to follow the plans and no reason not too. Thanks to Vic for his post.
Moving on now.....

Fearless 11-02-2016 12:06 PM

Bolt orientation
 
My DAR questioned the orientation of the bolt but I showed him in the plans how Van's had it oriented.

az_gila 11-02-2016 01:03 PM

Quote:

Originally Posted by JonJay (Post 1123718)
.... I said that Gil. But if they kept supplying the wrong hardware, in the right bag, it makes sense why Vic see's so many of these installed. I have a hard time believing that so many would simply substitute without a reason if the right hardware was in the kit. Assumptions would be made....
It was a long time ago, but I questioned the factory on this. Since it was a long time ago, and said person no longer there, I will just let rest what they told me. It is a simple thing to follow the plans and no reason not too. Thanks to Vic for his post.
Moving on now.....

The -6 hardware provided was frequently of the wrong length. Even the bolt in question had it's length changed in a revision...:)

I dumped all of my kit hardware in trays and just picked what fit, using the plans to specify the type of hardware. Putting the wrong hardware in without checking the plans is a big boo-boo. :rolleyes:

If original -6 builders simply went by bag labels there will be many bolts too short...:)

az_gila 11-02-2016 01:05 PM

Quote:

Originally Posted by Fearless (Post 1123724)
My DAR questioned the orientation of the bolt but I showed him in the plans how Van's had it oriented.

Why would he question it? The bolt is in "standard orientation" with the head forward.

JonJay 11-02-2016 01:41 PM

Quote:

Originally Posted by az_gila (Post 1123733)
The -6 hardware provided was frequently of the wrong length. Even the bolt in question had it's length changed in a revision...:)

I dumped all of my kit hardware in trays and just picked what fit, using the plans to specify the type of hardware. Putting the wrong hardware in without checking the plans is a big boo-boo. :rolleyes:

If original -6 builders simply went by bag labels there will be many bolts too short...:)

Too long, too short, absolutely agree. Also, substitutions where made in the early days. Some of those substitutions where hardware.

If you found the wrong hardware, and called the factory, and they told you it was fine.... just sayin...., Is that still a big boo-boo? :rolleyes: hmmmm..... maybe.

I love a mystery, and again, there is a reason Vic is finding this a common place that the hardware doesn't match plans and it isn't by chance.

az_gila 11-02-2016 03:55 PM

Quote:

Originally Posted by JonJay (Post 1123742)
....
I love a mystery, and again, there is a reason Vic is finding this a common place that the hardware doesn't match plans and it isn't by chance.

Yes, it's a mystery...:)

But I think it's because early -6 builders somewhat gave up on the plans by the time the wings got attached and simply used "standard" hardware without looking at the plans to see if a specific locations called for "special/different" hardware..

Did anyone really check bags of hardware that far along in the build process..:)

JonJay 11-02-2016 04:15 PM

Quote:

Originally Posted by az_gila (Post 1123774)
Yes, it's a mystery...:)

But I think it's because early -6 builders somewhat gave up on the plans by the time the wings got attached and simply used "standard" hardware without looking at the plans to see if a specific locations called for "special/different" hardware..

Did anyone really check bags of hardware that far along in the build process..:)

Of course we didn't read the plans. We needed them to start fires in our caves.

rvbuilder2002 11-02-2016 04:46 PM

The bolt specified in the plans for all RV kits is an AN5 with a castellated nut and cotter pin.

AN5 bolts are only used in a few places in an RV. The rear spar attach and the landing gear legs are the only ones I can think of right now so short AN5A bolts would have never been intentionally supplied.

The RV-6A I completed in 1993 was supplied with castellated nuts and drilled AN5 bolts and they were called out in the plans.

All new designs since the RV-6 have specified and supplied the same bolt (I think it is in the finish kit hardware).

JonJay 11-02-2016 05:18 PM

Quote:

Originally Posted by rvbuilder2002;
....short AN5A bolts would have never been intentionally supplied.

I believe you Scot, and was hopeful you would chime in.
I am still dumbfounded why so many keep showing up, and I know what was supplied to me.... Others would have to intentionally order the wrong hardware as AN5A's typically aren't just laying around. Why would someone do that?
No matter. If my kit was the only one in the fleet, others are just being careless.

I didn't mean to derail Vic's safety post. It does'nt matter why the wrong hardware is being used.

vic syracuse 11-02-2016 06:10 PM

Not a shipment issue
 
OK, sorry, been busy all day and haven't had time to check this. The bolts are supposed to be drilled and castellated. Just yesterday I removed 2 more from the AFT spar in an RV-8 and they WERE drilled bolts(AN5) but yet had fiber nuts on them. I see many that way.
My guess is that at the airport when final assembly occurs, everyone forgets that it is supposed to be castellated and doesn't check because the plans are left at home.

And I hear you on "they haven't moved so I leave them," but I don't think that is the right approach. My opinion. :)

Vic


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