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Eric_Kallio
Joined: 29 Jan 2006
Posts: 149
Location: Baton Rouge, LA
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 Posted: Sat Jun 30, 2007 1:11 pm Post subject: Fuselage foward center spar |
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When mating the forward and middle section of the fuse I ran into an issue concerning the wing bolt holes in the forward portion of the wing spar carry through. The plate on the front side of the spar web does not line up with the bolt holes. It is off by 1/16th of an inch. You can see in the picture attached. I have checked all down the spar to see if maybe I induced a warp or something to that affect in the web, but I found no indication of such and the pther 3 sets of wing bolts inserted beautifully. I am thinking that for a fix I may be able to file down web to match the hole without affecting the remainder of the bolt hole which must retain its close tolerance. What say you fellow builders? Any other suggestions?
Eric Kallio
40518 SB fuse-trying to join the forward and mid fuse sections
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coop85(at)cableone.net
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| Posted: Sat Jun 30, 2007 5:06 pm Post subject: Fuselage foward center spar |
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Eric,
If you don't get a response from the list from someone that has
experience the same thing, I'd HIGHLY recommend a call to Van's. They may
have an explanation and the ideal fix, or could at least provide insight to
the potential downsides (if any) to your proposed fix. The other advantage
is if there is a manufacturing flow (odd how the holes don't line up??)
maybe you can save someone else some headache.
Good Luck,
Marcus
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jesse(at)saintaviation.co
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| Posted: Sat Jun 30, 2007 6:18 pm Post subject: Fuselage foward center spar |
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I'd call Van's and maybe even request a new part. I have seen this before, but I think it is quite rare.
Do not archive
Jesse Saint
Saint Aviation, Inc
jesse(at)saintaviation.com
www.saintaviation.com
352-427-0285
Leather interior kit for the RV-10 -
www.saintaviation.com/interior
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Eric_Kallio
Joined: 29 Jan 2006
Posts: 149
Location: Baton Rouge, LA
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| Posted: Sun Jul 01, 2007 3:32 am Post subject: Re: Fuselage foward center spar |
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I had planned on calling Vans on Monday regardless, I was fishing and hoping that if this had been seen before there was a fix floating around. My concern with getting a new part is that somewhere I was told that these were match drilled as a set with the wing spars and not interchangeable. Don't know about the validity of that never really followed up on it.
Eric
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jesse(at)saintaviation.co
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Mike Whisky
Joined: 05 Jun 2006
Posts: 336
Location: Switzerland
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| Posted: Mon Jul 02, 2007 4:10 am Post subject: Re: Fuselage foward center spar |
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They are for shure not matchdrilled. The QB Kits are not matchdrilled eather.
Michael
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RV-10 builder (flying)
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Eric_Kallio
Joined: 29 Jan 2006
Posts: 149
Location: Baton Rouge, LA
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| Posted: Mon Jul 02, 2007 2:58 pm Post subject: Re: Fuselage foward center spar |
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After a conversation with Van's it is acceptable to file down the web of the spar. The key is to not enlarge the bolt holes through the spar. Hopefully this will save anyone else some worry if it happens to you also. The person I talked to said this wasn't the first occurence of this problem. I am willing to bet it won't be the last.
Eric
40518-Starting fuse side skins
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AV8ORJWC
Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"
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| Posted: Mon Jul 02, 2007 5:37 pm Post subject: Fuselage foward center spar |
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Would everyone consider identifying whom at VANS they receive
information from for future posts. The power of "VANS told me to do it
this way" carries a lot of clout.
Recently someone on the RV list said a DAR advised not to safety wire
prop attachment bolts to the prop hub. That comment could be blasphemy
and every DAR is smeared with the same dangerous advice that is brushed
by that directive.
This is not to diminish the value of advice but not all information is
vetted or accurate. Safety for every builder should be consistent. It
is amazing how a mis-understood piece of advice can be slightly altered
with major event change.
You are the Manufacturer and you set the quality standard. Its kind of
like the Zenith TVs of decades ago. "The quality goes in before the
name goes on". Zenith never identified the quality or when they shipped
the production out of the USA for cheaper labor costs.
Van just makes parts (and a great kit concept). Get a second opinion
for the benefit of your loved ones on filing of structural members. The
spar and its web is no minor component of your investment.
As mass produced "Builder Assist" RV-10 kits make there way into the
insurance pool, a simple misunderstanding can make for major structural
change. Not all change is positive.
John Cox - KUAO
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Eric_Kallio
Joined: 29 Jan 2006
Posts: 149
Location: Baton Rouge, LA
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| Posted: Tue Jul 03, 2007 2:35 pm Post subject: Re: Fuselage foward center spar |
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I believe it was Alan that I talked to. I had meant to write it down but forgot.
Eric
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