Today's Message Index:
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1. 08:19 PM - Re: Z-bracket height (again) - Help! (Michael D. Cencula)
2. 08:54 PM - Re: Z-bracket height (again) - Help! (Frank Stringham)
3. 10:15 PM - Re: Z-bracket height (again) - Help! (Michael D. Cencula)
Message 1
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| Subject: | Re: Z-bracket height (again) - Help! |
Charlie, you rock!
I dunno what the heck happened, but my wing jig was completely out of kilter.
The wing wasn't level and it wasn't straight either. I had a post under the
center of the rear spar to support it, but that wasn't enough to support it
evenly. Instead of one long U shaped bow, I had two smaller ones. I ended
up putting three supports under the rear spar at 25%, 50%, and 75% of the
length. I also redid all the mounting points and re-leveled everything up.
The only thing I can guess is that either the 4x4s I made my jig out of warped
or twisted, or maybe my basement floor shifted some since I put the jig up
last fall. I also discovered that the bubble in my carpenter's level shifts
probably a full 1/32 inch just by flipping it around. Arghhh!
Anyway, spending a couple evenings with a borrowed precision machinist's level
(I'm tempted to throw out that carpenter's level I originally used) got
everything straight, level, plumb again. And now, the skins fit together
PERFECTLY!!!! I'm soooo happy! :-)
Thanks, Charlie, and thanks everyone else who took time from their day to look
at the problem and respond.
Best regards,
Mike
On Sunday March 18 2007 01:50 am, Charlie England wrote:
> > Mike
>
> Are the tank holes/spar holes offset by the same amount as the skin gap?
> (I've 'over-prepped' an edge or two & that could leave a gap at the
> point in question.)
>
> Is the gap between the tank skin & wing skin perfectly consistent along
> the entire length & on both top & bottom of the wing? If not:
>
> Is the spar perfectly straight? (Jack under middle of trailing edge spar
> & tweak it up/down to see if the tank will fall into place with a little
> help from the straps.)
>
> Is there any twist in the spar?
>
> If you haven't riveted on the outboard leading edge, have you tried the
> tank without the outboard leading edge in place?
Message 2
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| Subject: | Re: Z-bracket height (again) - Help! |
Mike
Relief I am sure. During my build I have always found that, "if it doesn't
fit you must ........ I have done something wrong. The problem was usually
simple/something that was right in front of me/and usually someone else
(Charlie/Dan/Walter/ lectric Bob/Don my very own A&P build partner/Vans help
desk /and many many others helped me see the light. For me, I now, in the
face of a problem step back,access the problem,review the many great web
sights (can you say Dan), and never force the issue or forge a head thinking
that the problem will somehow magically fix itself later in the build
process.
Mike, I have really enjoyed following your thread on the tank fit. It
brought back memories I would like to forget, memories of things learned,
and the enjoyment of seeing another problem solved by our great RV family.
Frank @ SGU RV7A "NDY"
>From: "Michael D. Cencula" <matronics@cencula.com>
>To: rv7-list@matronics.com
>Subject: Re: RV7-List: Z-bracket height (again) - Help!
>Date: Tue, 20 Mar 2007 23:18:14 -0400
>
><matronics@cencula.com>
>
>Charlie, you rock!
>
>I dunno what the heck happened, but my wing jig was completely out of
>kilter.
>The wing wasn't level and it wasn't straight either. I had a post under
>the
>center of the rear spar to support it, but that wasn't enough to support it
>evenly. Instead of one long U shaped bow, I had two smaller ones. I ended
>up putting three supports under the rear spar at 25%, 50%, and 75% of the
>length. I also redid all the mounting points and re-leveled everything up.
>
>The only thing I can guess is that either the 4x4s I made my jig out of
>warped
>or twisted, or maybe my basement floor shifted some since I put the jig up
>last fall. I also discovered that the bubble in my carpenter's level
>shifts
>probably a full 1/32 inch just by flipping it around. Arghhh!
>
>Anyway, spending a couple evenings with a borrowed precision machinist's
>level
>(I'm tempted to throw out that carpenter's level I originally used) got
>everything straight, level, plumb again. And now, the skins fit together
>PERFECTLY!!!! I'm soooo happy! :-)
>
>Thanks, Charlie, and thanks everyone else who took time from their day to
>look
>at the problem and respond.
>
>Best regards,
>
>Mike
>
>On Sunday March 18 2007 01:50 am, Charlie England wrote:
> > > Mike
> >
> > Are the tank holes/spar holes offset by the same amount as the skin gap?
> > (I've 'over-prepped' an edge or two & that could leave a gap at the
> > point in question.)
> >
> > Is the gap between the tank skin & wing skin perfectly consistent along
> > the entire length & on both top & bottom of the wing? If not:
> >
> > Is the spar perfectly straight? (Jack under middle of trailing edge spar
> > & tweak it up/down to see if the tank will fall into place with a little
> > help from the straps.)
> >
> > Is there any twist in the spar?
> >
> > If you haven't riveted on the outboard leading edge, have you tried the
> > tank without the outboard leading edge in place?
>
>
_________________________________________________________________
Exercise your brain! Try Flexicon.
http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinemarch07
Message 3
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| Subject: | Re: Z-bracket height (again) - Help! |
Thanks for the nice comments, Frank. That really makes me feel like part of
the family. Hopefully I'll one day get to fly out and meet you guys. :-)
Do not archive.
On Tuesday March 20 2007 11:53 pm, Frank Stringham wrote:
>
> Mike
>
> Relief I am sure. During my build I have always found that, "if it doesn't
> fit you must ........ I have done something wrong. The problem was usually
> simple/something that was right in front of me/and usually someone else
> (Charlie/Dan/Walter/ lectric Bob/Don my very own A&P build partner/Vans
> help desk /and many many others helped me see the light. For me, I now, in
> the face of a problem step back,access the problem,review the many great
> web sights (can you say Dan), and never force the issue or forge a head
> thinking that the problem will somehow magically fix itself later in the
> build process.
>
> Mike, I have really enjoyed following your thread on the tank fit. It
> brought back memories I would like to forget, memories of things learned,
> and the enjoyment of seeing another problem solved by our great RV family.
>
> Frank @ SGU RV7A "NDY"
>
> >From: "Michael D. Cencula" <matronics@cencula.com>
> >To: rv7-list@matronics.com
> >Subject: Re: RV7-List: Z-bracket height (again) - Help!
> >Date: Tue, 20 Mar 2007 23:18:14 -0400
> >
> ><matronics@cencula.com>
> >
> >Charlie, you rock!
> >
> >I dunno what the heck happened, but my wing jig was completely out of
> >kilter.
> >The wing wasn't level and it wasn't straight either. I had a post under
> >the
> >center of the rear spar to support it, but that wasn't enough to support
> > it evenly. Instead of one long U shaped bow, I had two smaller ones. I
> > ended up putting three supports under the rear spar at 25%, 50%, and 75%
> > of the length. I also redid all the mounting points and re-leveled
> > everything up.
> >
> >The only thing I can guess is that either the 4x4s I made my jig out of
> >warped
> >or twisted, or maybe my basement floor shifted some since I put the jig up
> >last fall. I also discovered that the bubble in my carpenter's level
> >shifts
> >probably a full 1/32 inch just by flipping it around. Arghhh!
> >
> >Anyway, spending a couple evenings with a borrowed precision machinist's
> >level
> >(I'm tempted to throw out that carpenter's level I originally used) got
> >everything straight, level, plumb again. And now, the skins fit together
> >PERFECTLY!!!! I'm soooo happy! :-)
> >
> >Thanks, Charlie, and thanks everyone else who took time from their day to
> >look
> >at the problem and respond.
> >
> >Best regards,
> >
> >Mike
> >
> >On Sunday March 18 2007 01:50 am, Charlie England wrote:
> > > > Mike
> > >
> > > Are the tank holes/spar holes offset by the same amount as the skin
> > > gap? (I've 'over-prepped' an edge or two & that could leave a gap at
> > > the point in question.)
> > >
> > > Is the gap between the tank skin & wing skin perfectly consistent along
> > > the entire length & on both top & bottom of the wing? If not:
> > >
> > > Is the spar perfectly straight? (Jack under middle of trailing edge
> > > spar & tweak it up/down to see if the tank will fall into place with a
> > > little help from the straps.)
> > >
> > > Is there any twist in the spar?
> > >
> > > If you haven't riveted on the outboard leading edge, have you tried the
> > > tank without the outboard leading edge in place?
>
> _________________________________________________________________
> Exercise your brain! Try Flexicon.
> http://games.msn.com/en/flexicon/default.htm?icid=flexicon_hmemailtaglinema
>rch07
>
>
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