Today's Message Index:
----------------------
1. 04:01 AM - Spar Strap (jglazener)
2. 04:11 AM - Re: Spar Strap (graeme bird)
3. 04:46 AM - Re: Spar Strap (David Watts)
4. 05:25 AM - Re: Spar Strap (jglazener)
5. 06:27 AM - Re: Re: Spar Strap (David Watts)
6. 07:23 AM - Re: Re: Spar Strap (Mike Christine Duane)
7. 08:04 AM - Re: Spar Strap (budyerly@msn.com)
8. 08:06 AM - Re: Spar Strap (JonathanMilbank)
9. 09:44 AM - Re: Re: Spar Strap (D McFadyean)
10. 01:10 PM - Re: Re: Spar Strap (timward)
11. 01:19 PM - Re: Re: Spar Strap (Bud Yerly)
12. 03:42 PM - Conventional Tail Dragger (Paul McAllister)
13. 05:20 PM - Re: Spar Strap (rparigoris)
14. 09:05 PM - Oil Catch Can (rparigoris)
Message 1
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I have come to the point where everything on the plane is finished and working.
Everything? Not quite. Through procrastination, lack of understanding and the
hassle involved in getting two wings lined up vertically I have put off making
the spar strap until this is really the only thing keeping me from flying.Now
it's winter and even more inconvenient since I have to do it outside.
Obviously if it is flight safety related its a no-brainer that I have to do it
now or wait for better weather. But I am just wondering: is this really an A-item
(failure leading to loss of A/C and crew) or a nice to have I can do later?
With all the lift and pip pins in there it seems the wings are pretty secure.
If this strap is what is separating you from disaster you probably have a different
problem altogether.
Any thoughts?
--------
Jeroen
http://www.europaowners.org/main.php?g2_itemId=44165
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499731#499731
Message 2
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my take is that it is part of a basket of measures taken due to an unexplained
accident i cardiff about 12 years ago. Europas had been flying without issue
for probably 12 years before. it helps prevents twisting of spars under high stress.
--------
Graeme Bird
Kit 2 in build, Mono Classic 912;
Kit 1 G-UMPY - Mono Classic/XS FFW 912S, Woodcomp SR3000/3W CS, trutrak Gemini
2 axis AP, PAW, PFLARM, ads-b out, 8.33khz, mode S, FP-5, Aera500, SD on Nexus,
Smart A3
380 hours, 980t
g(@)gdbmk.co.uk
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499732#499732
Message 3
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The spar strap was introduced as part of the weight upgrade modification
from 1300 Lbs. to 1370 Lbs. (and not a result of any accidents).
It was introduced to prevent the rear spar bending away at maximum loading.
Dave Watts
On Sat, 19 Dec 2020 at 12:05, jglazener <j.glazener14@gmail.com> wrote:
>
> I have come to the point where everything on the plane is finished and
> working. Everything? Not quite. Through procrastination, lack of
> understanding and the hassle involved in getting two wings lined up
> vertically I have put off making the spar strap until this is really the
> only thing keeping me from flying.Now it's winter and even more
> inconvenient since I have to do it outside.
> Obviously if it is flight safety related its a no-brainer that I have to
> do it now or wait for better weather. But I am just wondering: is this
> really an A-item (failure leading to loss of A/C and crew) or a nice to
> have I can do later? With all the lift and pip pins in there it seems the
> wings are pretty secure. If this strap is what is separating you from
> disaster you probably have a different problem altogether.
> Any thoughts?
>
> --------
> Jeroen
>
> http://www.europaowners.org/main.php?g2_itemId=44165
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=499731#499731
>
>
Message 4
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So that would mean that if I stay below 1300, which shouldn't be a problem for
the test phase, I would be OK? That would at least allow me to wait until some
warmer weather comes around.
--------
Jeroen
http://www.europaowners.org/main.php?g2_itemId=44165
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499734#499734
Message 5
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Jeroen,
At 1300 Lbs. before the weight upgrade we were restricted to 150 knots max
speed.
Dave Watts
On Sat, 19 Dec 2020 at 13:28, jglazener <j.glazener14@gmail.com> wrote:
>
> So that would mean that if I stay below 1300, which shouldn't be a problem
> for the test phase, I would be OK? That would at least allow me to wait
> until some warmer weather comes around.
>
> --------
> Jeroen
>
> http://www.europaowners.org/main.php?g2_itemId=44165
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=499734#499734
>
>
Message 6
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For me, anything that was a safety upgrade, I did.
I found doing the spar strap very straight forward. I did notice that I had quite
a bit of mold release that had to be judiciously removed from the top, bottom,
and forward surfaces of the port spar. Then a good attention to detail on
scuffing only those surfaces. After I was sure this was done, I verified the position
of the strap, wrapped the corresponding area of the starboard spar with
clear wrap, joined the two wings, and did the fiberglass wrap portion. I then
wrapped clear wrap around both spars to insure a snug fit.
Have never had an issue with it since.
Mike Duane
N377EA Europa conventional gear
Chandler, Arizona, USA
Sent from my iPhone
> On Dec 19, 2020, at 6:26 AM, jglazener <j.glazener14@gmail.com> wrote:
>
>
> So that would mean that if I stay below 1300, which shouldn't be a problem for
the test phase, I would be OK? That would at least allow me to wait until some
warmer weather comes around.
>
> --------
> Jeroen
>
> http://www.europaowners.org/main.php?g2_itemId=44165
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=499734#499734
>
>
>
>
>
>
>
>
>
Message 7
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Just my two cents.
The spar strap prevents the spars from doing two things.
Bending back and impacting the aileron cross connect, twisting or separating.
As many have found on the original Classic, the spar cups took abuse. Some of
that due to poor security of the starboard tip by the 3/8 inch pin. Some from
the twisting of the spars under load, and some due to poor technique on installation
and rigging.
With the GW increase testing, enlarging the pin to allow a pip pin to securely
hold the spars firmly from creeping aft was a very thoughtful idea. The spar
strap really keeps the spars from bending which they do under load. Remember,
the XS short wing spar has no bid around it for a shear web, so the roves are
good in vertical bending but not so great in twisting or bowing.
So belts and suspenders. Either enlarge the thickness of the spars with shear
webbing as in the glider wing, or retain them seems to be the dilemma. They chose
simple, a spar strap.
I would always install a spar strap. It aids rigging if built right with some
clearance, reduces pressure on the spar cup during rigging, assists in keeping
the spars safely put under high G pullouts.
Take the time and do it right. If you don't do it in construction, it may never
get done. In testing, if a situation requires a quick pull out, the added spar
strap fixation may become a factor. I try never to cut corners. Anything
worth doing is worth doing right.
Technique:
Support the wings and spars so the spars are exactly vertical, each wing is at
the same incidence and the spar pins rotate easily. This is important to ensure
the strap is going to be properly aligned and not just slightly askew. NEVER
clamp the spars together to get alignment.
Wrap the starboard spar with blue painters tape then the release tape to give you
a few thousands more room for rigging and more importantly derigging during
construction.
Make the upper curved inlet as shown but do the same on the lower on the starboard
side of the cup layup to ease rigging. I make my spar strap "ramp" about
1/4 inch larger than depicted as well as the strap to allow nice clean trimming.
Make your glass wrap as shown in the manual.
Wrap peel ply around your glass to prevent sagging and use some release tape to
hold the peel ply from sagging if necessary.
In cold climates:
Try to find a shop that may let you do the work in the warm, but if that is impossible:
Make a box over the spars out of styrofoam and use an incandescent light to keep
it warm to cure.
Once cured, if heat treat is necessary pull apart the wings and heat treat slowly
in the garage.
The spar strap when done properly is an excellent aid in rigging as well. As the
starboard spar is inserted, it is aligned with the strap and will slide along
the port spar and assist in self alignment. The spars stay properly vertical,
assisting the wing tip assistant. If the builder also installs a rigging
aid for the spar to slide on and assist in alignment,(keeping the spar from sliding
aft) and building a small ramp on the spar root to assist lifting the spar
as it hits the cup and thereby aligning the pins to very near their required
elevation, even the most clumsy of assistants even without a saw horse or trestle
under the wing will be amazed how easy the rig is.
Best Regards,
Have a great holiday.. Bud Yerly
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499738#499738
Message 8
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The strap is also helpful when rigging the wings, to ensure that when the starboard
wing gets inserted, it will be guided by the strap towards the cowbell socket
which can't be seen after the port wing has been installed.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=499739#499739
Message 9
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150Knts is a benefit when it comes to the annual (LAA) Permit Vne dive test!
> On 19 December 2020 at 14:26 David Watts <flydgw@gmail.com> wrote:
>
> Jeroen,
>
> At 1300 Lbs. before the weight upgrade we were restricted to 150 knots max
speed.
>
> Dave Watts
>
> On Sat, 19 Dec 2020 at 13:28, jglazener <j.glazener14@gmail.com mailto:j.glazener14@gmail.com > wrote:
>
> >
> > So that would mean that if I stay below 1300, which shouldn't be a
problem for the test phase, I would be OK? That would at least allow me to wait
until some warmer weather comes around.
> >
> > --------
> > Jeroen
> >
> > http://www.europaowners.org/main.php?g2_itemId=44165
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=499734#499734
> >
> >
> >
> >
> >
> >
> > ==========
> > pa-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?Europa-List
> > ==========
> > FORUMS -
> > eferrer" target="_blank">http://forums.matronics.com
> > ==========
> > WIKI -
> > errer" target="_blank">http://wiki.matronics.com
> > ==========
> > b Site -
> > -Matt Dralle, List Admin.
> > rel="noreferrer" target="_blank">http://www.matronics.com/contribution
> > ==========
> >
> >
> >
> >
> > >
Message 10
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If you trailer your aircraft then a modification will have to be done to the
trailer wing spar holders to get the spar with the cap through. You will ha
ve to top hinge that spar holder. Two cents worth.
Sent from my iPad
Tim Ward
12 Waiwetu Street,
Fendalton,
Christchurch, 8052
New Zealand.
ward.t@xtra.co.nz
021 0640221
> On 20/12/2020, at 6:51 AM, D McFadyean <ami-mcfadyean@talktalk.net> wrote:
>
> =EF=BB
> 150Knts is a benefit when it comes to the annual (LAA) Permit Vne dive tes
t!
>
>
>
>> On 19 December 2020 at 14:26 David Watts <flydgw@gmail.com> wrote:
>>
>> Jeroen,
>>
>> At 1300 Lbs. before the weight upgrade we were restricted to 150 knots ma
x speed.
>>
>> Dave Watts
>>
>> On Sat, 19 Dec 2020 at 13:28, jglazener <j.glazener14@gmail.com> wrote:
>>
>> So that would mean that if I stay below 1300, which shouldn't be a proble
m for the test phase, I would be OK? That would at least allow me to wait un
til some warmer weather comes around.
>>
>> --------
>> Jeroen
>>
>> http://www.europaowners.org/main.php?g2_itemId=44165
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=499734#499734
>>
>>
>>
>>
>>
>>
>> ===========
>> pa-List" rel="noreferrer" target="_blank">http://www.matronics.com/Na
vigator?Europa-List
>> ===========
>> FORUMS -
>> eferrer" target="_blank">http://forums.matronics.com
>> ===========
>> WIKI -
>> errer" target="_blank">http://wiki.matronics.com
>> ===========
>> b Site -
>> -Matt Dralle, List Admin.
>> rel="noreferrer" target="_blank">http://www.matronics.com/contributio
n
>> ===========
>>
>>
>>
>
>
Message 11
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Message 12
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Subject: | Conventional Tail Dragger |
Hi Folks,
Does anyone happen to have the contact details of the gentleman who has the
conventional taildragger aircraft that was started by Miles McCallum?
If I understand it correctly the design was done by John Wighton, the
initial construction work was done by McCallum and the project was
ultimately completed in recent times by someone else.
Thanks, Paul
Message 13
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Hi Jeroin I remember reading of Nev's adventures sandbag loading original classic
wing. It failed something like the spar flexed and slipped off the spar pin,
I forget if it was before or after the center (I think wood) split. Anyway it
failed and the process of offloading begun. Son of a gun when weight got down
the spar snapped back into place. Hmm, he figured he would see how strong it
was, I forget the details, don't think it made it to 2 Gs, but close. So you
can take comfort when you perform a less than perfect Lomcovak on your Europa
and fail the spar because you don't install spar strap, perhaps you can unload
and land OK if you're gentle! The pip pin with balls on one spar pin and spar
strap for the other increases amount of load before failing wing. Just going
from long term memory but pretty sure to the why. Ron P.
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Hi Group
Has anyone had success, or hope not: failure with an oil catch can on a Rotax?
Details appreciated. Ron P.
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