Today's Message Index:
----------------------
1. 01:37 AM - Re: Joining the wings. Finally (Paul Mulwitz)
2. 12:14 PM - Re: Joining the wings. Finally (chris Sinfield)
3. 12:53 PM - Re: Re: Joining the wings. Finally (Jay Bannister)
4. 03:22 PM - Re: Joining the wings. Finally (Sabrina)
5. 05:48 PM - Re: Re: Joining the wings. Finally (Erwin Beckman)
Message 1
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| Subject: | Re: Joining the wings. Finally |
Hi Chris,
I gave up on the photo guides early, so I don't remember what they had
to offer on the wing mounting.
As I recall there were two big issues to resolve. The first and most
difficult was drilling through all the layers of wing root and
carry-through to get a nice smooth hole. It needs to fit the bolt very
nicely but not too tight for the bolt to be inserted and removed later.
I went through several attempts at this drilling problem because the
length of the holes made it difficult. The method that worked for me
was to use just drills rather than any reamers. I started with small
drill diameters and "Step Drilled" in very small increments until
reaching the final size. I don't remember exactly how I held it all in
place for drilling but I'm sure it included using at least a few bolts
torqued to hold the carry through and wing together. Then as the holes
got bigger the clamping bolts needed to be swapped so the holes with
bolts became holes without bolts for drilling.
The rear hole was very easy. It sets the rear wing position compared to
the top longerons. You just need to make the measurement shown on the
drawings and clamp the wing in position for drilling the hole.
Good luck,
Paul
Camas, WA
XL out of phase I - in normal flight operations.
On 12/14/2013 11:32 PM, chris Sinfield wrote:
>
> Hi everyone
> I have finally finished enough to join the wings to the fuse next week.
> I can't find any info in the photo guides on drilling the back spar hole
> There is a little info in page 6-S-3 of the plans.
>
> Is that all there is?
> If so
>
> What are the tips and tricks to the wing installation ?
> Chris
> I hope I get it right or it won't fly right.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=415600#415600
>
>
Message 2
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| Subject: | Re: Joining the wings. Finally |
Paul
The front holes were done already and so it's just the rear hole and alignment
checks.
Chris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=415616#415616
Message 3
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| Subject: | Re: Joining the wings. Finally |
Chris,
Remember you have to cut out some of the bottom wing skin to get access to
the inside of the wing to get at the attach bolt. When you cut that access
hole, you can then temporarily clamp the rear spar to the attach bracket w
hile you adjust the alignment. You can't really do anything with the dista
nce from the longeron refernece line to the top of the main spar, so the al
ignment of the rear spar is really all you can do. I think you are buildin
g a 601, so I would concentrate on making the rear tip of the wing skin 100
mm lower than the top of the main spar. Once your alignment is set, you ca
n drill for the bolt, staying as far away from edges as possible yet with r
oom to access the nut. I put a little witness paint on that nut once it wa
s torqued, and added a look at that to the pre-flightr check list. I drill
ed a small pilot hole before drilling out to the proper size. Hope this he
lps.
Jay
Message 4
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| Subject: | Re: Joining the wings. Finally |
Chris,
If you have a large build space, it is much easier, just mount the wings, final
torque the main spar bolts and use 6-S-3, it has everything you need.
This is the procedure I would suggest for a confined space:
Measure the dR vs dL of all the 601XLs you can find. I have found some beyond
50 but within the +/-50 called out in 6-S-3. There is no reason not to shoot for
+/-5 mm.
Final drilling of the rear spar and 6B5-4 should be something you do near the end
of your build. First off, it is not good for the main spar bolt tolerances
to mount and dismount your wings repeatedly during the build (or even after.)
If you have a confined space, mount the left wing using taper pins for the main
spar and then drill a 1/16" hole in the rear spar and 6B5-4 leaving the bit in
place in order to set the longeron/6W7-1 aft edge reference to 325. Then measure
dL. Remove the wing.
Move the airplane over to the other side of the garage and repeat the steps above
with the right wing but this time try to match dR to dL. You may not be able
to, just do the best you can. Drill this side out to 1/8". Remove the right
wing.
If dL=dR, you are done for now, if not ,go back to mounting the left wing and re-drill
it to dR's length. Make sure you have these 1/16 and 1/8" holes close
enough so the final hole can consume both. Use clecos to hold them in place for
now.
In anticipation of having to tighten the final rear spar bolt, drill a 3/4" hole
in the bottom skin far enough forward from the rear spar in order to fit an
angled head wrench into wing in order to tighten the rear spar bolt. I know
the plans (6-W-0) say cut out rectangular a 20x40 notch, but a round 19.05 mm
hole in the correct place is better.
One you have painted your airplane and are ready to put the wings on for the last
time, torque the main spar bolts to spec with the rear spar clecos out.
At this point you measure dR vs. dL with accuracy. Don't be surprised if the 1/8"
hole in the rear spar does not mate up with the hole in 6B5-4, it is to be
expected since this time the main spar bolts are torqued to spec. Drill and
ream final once you have your desired tolerance (dR vs. dL), install your AN5-5As
and torque to spec.
At that point, mount and rivet the previously clecoed flaps in place.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=415627#415627
Message 5
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| Subject: | Re: Joining the wings. Finally |
Well put, Sabrina!!!
Rick
On Sun, Dec 15, 2013 at 5:22 PM, Sabrina <chicago2paris@msn.com> wrote:
>
> Chris,
>
> If you have a large build space, it is much easier, just mount the wings,
> final torque the main spar bolts and use 6-S-3, it has everything you need.
>
> This is the procedure I would suggest for a confined space:
>
> Measure the dR vs dL of all the 601XLs you can find. I have found some
> beyond 50 but within the +/-50 called out in 6-S-3. There is no reason not
> to shoot for +/-5 mm.
>
> Final drilling of the rear spar and 6B5-4 should be something you do near
> the end of your build. First off, it is not good for the main spar bolt
> tolerances to mount and dismount your wings repeatedly during the build (or
> even after.)
>
> If you have a confined space, mount the left wing using taper pins for the
> main spar and then drill a 1/16" hole in the rear spar and 6B5-4 leaving
> the bit in place in order to set the longeron/6W7-1 aft edge reference to
> 325. Then measure dL. Remove the wing.
>
> Move the airplane over to the other side of the garage and repeat the
> steps above with the right wing but this time try to match dR to dL. You
> may not be able to, just do the best you can. Drill this side out to 1/8".
> Remove the right wing.
>
> If dL=dR, you are done for now, if not ,go back to mounting the left wing
> and re-drill it to dR's length. Make sure you have these 1/16 and 1/8"
> holes close enough so the final hole can consume both. Use clecos to hold
> them in place for now.
>
> In anticipation of having to tighten the final rear spar bolt, drill a
> 3/4" hole in the bottom skin far enough forward from the rear spar in order
> to fit an angled head wrench into wing in order to tighten the rear spar
> bolt. I know the plans (6-W-0) say cut out rectangular a 20x40 notch, but
> a round 19.05 mm hole in the correct place is better.
>
> One you have painted your airplane and are ready to put the wings on for
> the last time, torque the main spar bolts to spec with the rear spar clecos
> out.
>
> At this point you measure dR vs. dL with accuracy. Don't be surprised if
> the 1/8" hole in the rear spar does not mate up with the hole in 6B5-4, it
> is to be expected since this time the main spar bolts are torqued to spec.
> Drill and ream final once you have your desired tolerance (dR vs. dL),
> install your AN5-5As and torque to spec.
>
> At that point, mount and rivet the previously clecoed flaps in place.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=415627#415627
>
>
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