Today's Message Index:
----------------------
1. 07:26 AM - Re: Re: Pesky heavy left wing (Ed Kranz)
2. 07:58 AM - Re: Pesky heavy left wing (hotwheels)
3. 08:11 AM - Re: Re: Pesky heavy left wing (Linn)
4. 08:20 AM - Re: Re: Pesky heavy left wing (Bob Condrey)
5. 10:14 AM - Re: Re: Pesky heavy left wing (Ed Kranz)
6. 11:40 AM - Re: Re: Rear seat access (Les Kearney)
7. 01:41 PM - torque value of fuel servo/engine studs (Mike Whisky)
8. 02:06 PM - Re: torque value of fuel servo/engine studs (Linn)
9. 02:36 PM - Re: torque value of fuel servo/engine studs (charliewaffles)
10. 04:36 PM - Re: Re: torque value of fuel servo/engine studs (Kelly McMullen)
Message 1
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| Subject: | Re: Pesky heavy left wing |
Can you elaborate on what you saw that was amiss when the wings were in the
cradles? I just bolted the flaps on to my wings (in the cradles). One flap
had all three hinge holes align PERFECTLY, but the other had the center
hole very slightly off. Very light pressure on the flap allowed the bolt to
slide in, and I didn't think anything of it... but now I'm wondering if
something might be off.
On Mon, Jan 28, 2013 at 5:03 PM, hotwheels <jaybrinkmeyer@yahoo.com> wrote:
>
> For the record, I knew something was amiss even with the flaps in the wing
> cradle. Called Vans and they said something like "fly it first and is and
> see if it's a problem".
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| Subject: | Re: Pesky heavy left wing |
Sorry to say, that was one symptom. One hole didn't quite line up. The other thing
of note was that the aft edge of the flap was slightly off from the aileron...
The flap trailing edge appeared to be straight, but that may not have been
the root cause. I don't think there's really any better way to tell if something
is off until you get the wings on and rigging done.
I've spoken to a couple people at Van's about this issue and no one seemed surprised
by having a flap twist. Apparently, it's common.
Jay
[quote="EdKranz"]Can you elaborate on what you saw that was amiss when the wings
were in the cradles? I just bolted the flaps on to my wings (in the cradles).
One flap had all three hinge holes align PERFECTLY, but the other had the center
hole very slightly off. Very light pressure on the flap allowed the bolt
to slide in, and I didn't think anything of it... but now I'm wondering if something
might be off.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=393226#393226
Message 3
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| Subject: | Re: Pesky heavy left wing |
At least Vans didn't say 'We've never heard of that before.' ;-)
Checking for twist is easy. Tape a yardstick to the top of the flap at
the fuselage end and another at the outer end and sight across the
yardsticks. Twist will show up significantly. The trailing edge can be
perfectly straight while there's twist in the flap or aileron. I think
the twist is the result of creep during the riveting process, but I'm no
expert!!!
Linn
On 1/29/2013 10:58 AM, hotwheels wrote:
>
> Sorry to say, that was one symptom. One hole didn't quite line up. The other
thing of note was that the aft edge of the flap was slightly off from the aileron...
The flap trailing edge appeared to be straight, but that may not have been
the root cause. I don't think there's really any better way to tell if something
is off until you get the wings on and rigging done.
>
> I've spoken to a couple people at Van's about this issue and no one seemed surprised
by having a flap twist. Apparently, it's common.
>
> Jay
>
>
> [quote="EdKranz"]Can you elaborate on what you saw that was amiss when the wings
were in the cradles? I just bolted the flaps on to my wings (in the cradles).
One flap had all three hinge holes align PERFECTLY, but the other had the
center hole very slightly off. Very light pressure on the flap allowed the bolt
to slide in, and I didn't think anything of it... but now I'm wondering if something
might be off.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=393226#393226
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
>
>
Message 4
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| Subject: | Re: Pesky heavy left wing |
Ed,
While it's a twist, calling it that causes people to assume that it's just
a trailing edge issue. In this case the hinge holes are actually
misaligned and at least while the wings were in the cradles, you could look
down the wing skin trailing edge and compare to the flap leading edge rivet
line and see that there was an issue also. To get the hinges to all align
(while the wing was in the cradle), pressure had to be applied to the last
hinge (my recollection is that it was about 3/8"=1/2" off. That all
implies that the flap spar itself has some twist to it but you'd expect
that the leading edges and/or skins would have forced it out. Best guess
is that there's something amiss with a skin causing the twist but that's
just speculation and without drilling the skins off, who knows. Needless
to say, the trailing edge also exhibits a twist. His other flap is
perfectly straight, so it's not like the L&R skins swapped and caused an
issue.
Bob
On Tue, Jan 29, 2013 at 9:58 AM, hotwheels <jaybrinkmeyer@yahoo.com> wrote:
>
> Sorry to say, that was one symptom. One hole didn't quite line up. The
> other thing of note was that the aft edge of the flap was slightly off fr
om
> the aileron... The flap trailing edge appeared to be straight, but that m
ay
> not have been the root cause. I don't think there's really any better way
> to tell if something is off until you get the wings on and rigging done.
>
> I've spoken to a couple people at Van's about this issue and no one seeme
d
> surprised by having a flap twist. Apparently, it's common.
>
> Jay
>
>
> [quote="EdKranz"]Can you elaborate on what you saw that was amiss when
the
> wings were in the cradles? I just bolted the flaps on to my wings (in the
> cradles). One flap had all three hinge holes align PERFECTLY, but the oth
er
> had the center hole very slightly off. Very light pressure on the flap
> allowed the bolt to slide in, and I didn't think anything of it... =EF
=BDbut now
> I'm wondering if something might be off.=EF=BD
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=393226#393226
>
>
===========
===========
===========
===========
>
>
Message 5
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| Subject: | Re: Pesky heavy left wing |
Linn and Bob,
Thanks for the input.
I did check for twist by taping a few levels to the flap bottom and using
them as winding sticks. As far as I can tell, I don't have any "Twist". I
can also sight down the aileron and flap trailing edge and it's straight
and they are even with each other. I may just have a very slight bow at the
spar of the flap or possibly even the rear spar of the wing. I'll look at
it closer by seeing how far off the hinge point is and seeing how the flap
is sitting against the top skin. It's a bit awkward with the wings sitting
vertically in the cradles.
Most likely, this is just my OCD flaring up! And there is most likely
nothing I can or should do until I can see how the flaps sit against the
fuse bottom... which is in a crate on a truck somewhere.
On Tue, Jan 29, 2013 at 10:20 AM, Bob Condrey <condreyb@gmail.com> wrote:
> Ed,
>
> While it's a twist, calling it that causes people to assume that it's just
> a trailing edge issue. In this case the hinge holes are actually
> misaligned and at least while the wings were in the cradles, you could look
> down the wing skin trailing edge and compare to the flap leading edge rivet
> line and see that there was an issue also. To get the hinges to all align
> (while the wing was in the cradle), pressure had to be applied to the last
> hinge (my recollection is that it was about 3/8"=1/2" off. That all
> implies that the flap spar itself has some twist to it but you'd expect
> that the leading edges and/or skins would have forced it out. Best guess
> is that there's something amiss with a skin causing the twist but that's
> just speculation and without drilling the skins off, who knows. Needless
> to say, the trailing edge also exhibits a twist. His other flap is
> perfectly straight, so it's not like the L&R skins swapped and caused an
> issue.
>
> Bob
>
At least Vans didn't say 'We've never heard of that before.' ;-)
Checking for twist is easy. Tape a yardstick to the top of the flap at the
fuselage end and another at the outer end and sight across the yardsticks.
Twist will show up significantly. The trailing edge can be perfectly
straight while there's twist in the flap or aileron. I think the twist is
the result of creep during the riveting process, but I'm no expert!!!
Linn
Message 6
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| Subject: | Re: Rear seat access |
Hi
A trick I used was to tie a small square of cloth to light nylon string then blow
it through using my air hose.
Worked like a charm even with tight turns.
Cheers
Les
Sent from my iPhone
On 2013-01-28, at 12:49 PM, "jkreidler" <jason.kreidler@regalbeloit.com> wrote:
>
> Another idea... If are able to get the fish tape into the subject area try placing
something magnetic on the end of the tape then use a magnet to steer the
tape to the hole. Or if there are no other wires you might be able to blow a
string through with a screw on the end and then use the magnet.
>
> I REALLY like Tim's idea of an access panel leading to a small storage space.
I saw this done on wingtips before. Great idea Tim! - Jason
>
> --------
> Jason Kreidler
> 4 Partner Build - Sheboygan Falls, WI
> Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler
> N44YH - Flying - #40617
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=393185#393185
>
>
>
>
>
>
>
>
>
>
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| Subject: | torque value of fuel servo/engine studs |
Hello,
can someone please tell me what the torque value of fuel servo/engine studs are.
Or where I can find this.
Thanks
Michael
--------
RV-10 builder (interior & finishing)
#511
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=393243#393243
Message 8
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| Subject: | Re: torque value of fuel servo/engine studs |
AC 43-13 is the 'bible' for aviation and everybody should have a copy.
You'll have far more knowledge at your fingertips ...... or mouse .....
than you'll possibly have questions for!!!
You can find it here:
http://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.information/documentID/99861
or *http://tinyurl.com/3hr4js4.*
To answer your question .... at least generally, look at table 7-1 0n
page 7-9 of AC43-13 for torque values for various size bolts.
Linn
On 1/29/2013 4:40 PM, Mike Whisky wrote:
>
> Hello,
>
> can someone please tell me what the torque value of fuel servo/engine studs are.
Or where I can find this.
> Thanks
> Michael
>
> --------
> RV-10 builder (interior & finishing)
> #511
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=393243#393243
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
>
>
Message 9
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| Subject: | Re: torque value of fuel servo/engine studs |
Actually, when it comes to the engine side of things, Lycoming specifies the torque
for everything on the engine. You should refer to Service Table of Limits
- SSP_1776 for anything relating to the Lycoming studs, bolts, nuts, etc... If
its not called out for specifically, they have a default torque section at the
end of the document. These are typically HIGHER than anything in AC43.13 or
other sources as most threads are coarse threads.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=393246#393246
Message 10
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| Subject: | Re: torque value of fuel servo/engine studs |
True, but with the servo, higher torque values are not better. You only
need enough to secure it and the gasket from air leaks. Very different
than holding case parting line together, for example. Also, you will be
using a lock tab, so they are not going to loosen. I'd recommend
sticking with the AC43-13-1B values for this application.
Just as Lycoming's spark plug torque value is 10 ft lbs higher than
Continental's, for the very same threads in the same helicoil and same
aluminum alloy. The Lyc representatives I've talked to could never give
a reason for the high torque value for spark plugs, that just about
requires a breaker bar to remove them. I've been using 25 ft lbs on my
certified Lycoming for over 10 yrs and 700 hours with no issues.
Kelly
A&P/IA
On 1/29/2013 3:36 PM, charliewaffles wrote:
>
> Actually, when it comes to the engine side of things, Lycoming specifies the
torque for everything on the engine. You should refer to Service Table of Limits
- SSP_1776 for anything relating to the Lycoming studs, bolts, nuts, etc...
If its not called out for specifically, they have a default torque section at
the end of the document. These are typically HIGHER than anything in AC43.13
or other sources as most threads are coarse threads.
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=393246#393246
>
>
-----
No virus found in this message.
Checked by AVG - www.avg.com
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