Today's Message Index:
----------------------
1. 05:31 AM - F-1010, F-1008R - Cracks in inner reinforce flange (Tom Gesele)
2. 06:25 AM - Re: F-1010, F-1008R - Cracks in inner reinforce flange (Tim Olson)
3. 09:00 AM - Fw: Torque values for AN3 Bolts into K1000-3 nutplates (Jeff Carpenter)
4. 07:08 PM - Re: F-1010, F-1008R - Cracks in inner reinforce flange (John W. Cox)
Message 1
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| Subject: | F-1010, F-1008R - Cracks in inner reinforce flange |
--> RV10-List message posted by: Tom Gesele <tgesele@optonline.net>
While cleaning up the tailcone bulkheads, noticed a couple of small cracks
in the F-1010 & F-1008R bulkheads in the inner stiffener flange that appear
to have been caused while the parts were being pressed. The cracks are very
small, probably only a few 1000ths thick and < 1/4" long so you really need
to look closely, and are located in the top radius of the bulkheads.
I've kicked around replacing them, spoke to Vans who said not to worry but
stop-drill the cracks if it gives me piece of mind. Probably will stop drill
and put doubler on web (gross overkill but why not) but still undecided.
My question is has anyone else noticed this? If this is a common occurrence,
then replacing the bulkhead won't accomplish anything and my decision is
easy.
Thanks,
Tom Gesele #40473 - Tailcone.
Message 2
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| Subject: | Re: F-1010, F-1008R - Cracks in inner reinforce flange |
--> RV10-List message posted by: Tim Olson <Tim@MyRV10.com>
Tom,
I have actually heard 2nd hand of this problem happening to
another builder. He received new bulkheads and even those
were cracked the same. They then told him not to worry about
it either. The guy who told me about it said he thought
that maybe the stamping dies were dull or something wasn't
right with them. Sorry I can't offer more other than
I've heard of the problem. It sounds like you could
realistically fix them as you mentioned. As more input
is gained from other builders though who may have the
same issue, there can either be a standard fix, or maybe
Van's will become aware that there is an issue that they
should look into.
Tim Olson -- RV-10 #40170
DO NOT ARCHIVE
Tom Gesele wrote:
> --> RV10-List message posted by: Tom Gesele <tgesele@optonline.net>
>
> While cleaning up the tailcone bulkheads, noticed a couple of small cracks
> in the F-1010 & F-1008R bulkheads in the inner stiffener flange that appear
> to have been caused while the parts were being pressed. The cracks are very
> small, probably only a few 1000ths thick and < 1/4" long so you really need
> to look closely, and are located in the top radius of the bulkheads.
>
> I've kicked around replacing them, spoke to Vans who said not to worry but
> stop-drill the cracks if it gives me piece of mind. Probably will stop drill
> and put doubler on web (gross overkill but why not) but still undecided.
>
> My question is has anyone else noticed this? If this is a common occurrence,
> then replacing the bulkhead won't accomplish anything and my decision is
> easy.
>
> Thanks,
> Tom Gesele #40473 - Tailcone.
>
Message 3
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| Subject: | Fwd: Torque values for AN3 Bolts into K1000-3 nutplates |
0.15 HTML_TEXT_AFTER_BODY BODY: HTML contains text after BODY close tag
Here's my response from Vans to the question of torque drag...
Begin forwarded message:
> From: "Bruce Reynolds" <brucer@vansaircraft.com>
> Date: October 21, 2005 12:12:16 PM PDT
> To: Jeff Carpenter <jeff@westcottpress.com>
> Subject: Re: Torque values for AN3 Bolts into K1000-3 nutplates
>
>
> Jeff,
>
> We don't have a torque chart for putting bolts into nutplates. Just
> get the bolt tight by feel. The danger is not leaving them too loose,
> but in breaking off the bolt if too tight. Once the parts are seated
> snug to each other, then you can stop. You could always make a
> test fixture and see what it takes to break off a bolt in a nutplate.
>
>
> Bruce Reynolds
> brucer@vansaircraft.com
>
>
Message 4
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| Subject: | F-1010, F-1008R - Cracks in inner reinforce flange |
--> RV10-List message posted by: "John W. Cox" <johnwcox@pacificnw.com>
Tom, post to this list the individual at VAN's telling you that
stop-drilling corrects for using worn dies during the CNC manufacture.
Your kidding yourself if you buy off that the problem ends with a stop
drill.
This exact problem began in the kit #350 range and I can now conclude it
was not resolved by #475.
Quality parts should be a reasonable expectation on the 10. It has been
unfortunately too overlooked. Tom was the source of such direction back
near #350. Even the replacement part was cracked. Go Figure. Builders
in this series should know what to look for and request a correction.
John - KUAO
-----Original Message-----
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Tom Gesele
Subject: RV10-List: F-1010, F-1008R - Cracks in inner reinforce flange
--> RV10-List message posted by: Tom Gesele <tgesele@optonline.net>
While cleaning up the tailcone bulkheads, noticed a couple of small
cracks
in the F-1010 & F-1008R bulkheads in the inner stiffener flange that
appear
to have been caused while the parts were being pressed. The cracks are
very
small, probably only a few 1000ths thick and < 1/4" long so you really
need
to look closely, and are located in the top radius of the bulkheads.
I've kicked around replacing them, spoke to Vans who said not to worry
but
stop-drill the cracks if it gives me piece of mind. Probably will stop
drill
and put doubler on web (gross overkill but why not) but still undecided.
My question is has anyone else noticed this? If this is a common
occurrence,
then replacing the bulkhead won't accomplish anything and my decision is
easy.
Thanks,
Tom Gesele #40473 - Tailcone.
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