Today's Message Index:
----------------------
1. 02:28 AM - Re: European registration/certification (Etienne Verhellen)
2. 05:03 AM - Re: European registration/certification (Thomas Smith)
3. 07:47 AM - Re: European registration/certification (mougellionel@aol.com)
4. 12:25 PM - Re: Re: Undercarriage (Didier BLOUZARD)
5. 04:38 PM - Re: Re: Undercarriage (Chris Wise)
6. 05:50 PM - Re: Undercarriage (Vic)
7. 06:42 PM - Re: Re: Undercarriage (Chris Wise)
8. 08:47 PM - Weather (Herb Coussons)
9. 08:51 PM - Re: Weather (Eric Wobschall)
Message 1
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| Subject: | Re: European registration/certification |
Mr Peiper,
Thanks for your message.
I have no dispute with anyone.
http://www.planepictures.net/netshow.php?id=524448
http://picasaweb.google.com/janmevis/GeneratorYakEtienne?authkey=Gv1sRgCK3J6qqEsvn-Ag#
Enjoy the summer ... flying if you can 8)
I agree Mr Peiper, and as I have written before :
http://forums.matronics.com/viewtopic.php?t=82933&highlight=european+certification
"I feel this discussion is going nowhere and I suggest we just leave it there".
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=346632#346632
Attachments:
http://forums.matronics.com//files/jan_and_etienne_852.png
http://forums.matronics.com//files/jan__etienne_494.jpg
http://forums.matronics.com//files/pierre_and_jan__christian__etienne_127.jpg
Message 2
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| Subject: | Re: European registration/certification |
I too would hate to loose George, and know how he feels.- I recently left
the aerobatic list because of too much BS and personal messages that would
best have been communicated off list.=0A=0ATom Smith=0A
Message 3
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| Subject: | Re: European registration/certification |
Instead of fighting each other like the situation i see currently in Europe,
i would be preferable to unify people and onwers , not to see smalls gangs o
f pilots doing nothing or simply talking putting more their cv as signature t
han usefull informations .
Some english and French guys are pulling the cover to them in order to creat
e or maintain their own maintenance facility , why ? Ra is not enough or peo
ple always want more money ?
As somebody told before , i would be better to be in US instead or France wh
en i see the poor mind of some people ...
Sent by Iphone
Le 16 juil. 2011 =C3- 14:00, Thomas Smith <thomas_csmith@yahoo.com> a =C3=A9
crit :
> I too would hate to loose George, and know how he feels. I recently left t
he aerobatic list because of too much BS and personal messages that would be
st have been communicated off list.
>
> Tom Smith
>
>
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>
Message 4
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| Subject: | Re: Undercarriage |
Hello vic
This is two interesting mods
Could you take a little time and take pictures or is it too late?
Anyway how difficult was it to do it. Did you need special tools ? Or skills?
Where can you have these new seals?
Thanks for any advice
Regards
Didier Blouzard
+33 6 2424 3672
Le 16 juil. 2011 02:37, "Vic" <vicmolnar@aol.com> a crit :
>
> Hi Chris,
>
> what is dive bottle air, 80 percent nitrogen and 20 percent oxygen ? How much
water can be in a refill of very few litres of air from a dive bottle provided
the bottle was filled in controlled conditions ? So we decided it was not worthwhile
to go for pure nitrogen.
> Basically silicone grease is a great lubricant for rubber or plastics and I
use it in some places in the actuating cylinders . Or otherwise a heavy lithium
grease for the bronce bushes in the landing gear and the ball locks in the actuators.
We did a complete landing gear overhaul last winter and found that excessive
wear in the bronce bushes showed in the scuffed anodised aluminium bushes.
The original felt "seals" cannot keep the dirt out and the grease in the
strut so I replaced them by seals used in hydraulic systems. A wiper seal keeps
dirt out and an o-ring keeps the grease inside. Id strongly suggest to do this
mod but this may be too late in your case. The action of the landing gear
on the ground is a bit stiff still, could be the grease and new bushes. But the
unpressurized strut moved smoothly so I suspect with 20 bar in the system the
o-rings produce a lot of friction.
> The original damper valve has no springs so this creates a lot of backlash and
knocking noise on rough airfields, so I did another mod to cure this. But this
year still no real test on rough ground done to report.
>
> Cheers
> Vic
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=346609#346609
>
>
>
>
> Attachments:
>
> http://forums.matronics.com//files/p1040651_487.jpg
> http://forums.matronics.com//files/p1040677_379.jpg
>
>
>
>
>
>
>
Message 5
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| Subject: | Re: Undercarriage |
G'Day Vic,
Thanks for that.
Makes a lot of sense and we have one oleo stripped and I see no problem in
fitting a suitable seal.
I shall keep you informed.
Cheers,
Chris.
----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Vic
Sent: Saturday, 16 July 2011 10:07 AM
Subject: Yak-List: Re: Undercarriage
Hi Chris,
what is dive bottle air, 80 percent nitrogen and 20 percent oxygen ? How
much water can be in a refill of very few litres of air from a dive bottle
provided the bottle was filled in controlled conditions ? So we decided it
was not worthwhile to go for pure nitrogen.
Basically silicone grease is a great lubricant for rubber or plastics and
I use it in some places in the actuating cylinders . Or otherwise a heavy
lithium grease for the bronce bushes in the landing gear and the ball locks
in the actuators. We did a complete landing gear overhaul last winter and
found that excessive wear in the bronce bushes showed in the scuffed
anodised aluminium bushes. The original felt "seals" cannot keep the dirt
out and the grease in the strut so I replaced them by seals used in
hydraulic systems. A wiper seal keeps dirt out and an o-ring keeps the
grease inside. Id strongly suggest to do this mod but this may be too late
in your case. The action of the landing gear on the ground is a bit stiff
still, could be the grease and new bushes. But the unpressurized strut moved
smoothly so I suspect with 20 bar in the system the o-rings produce a lot of
friction.
The original damper valve has no springs so this creates a lot of backlash
and knocking noise on rough airfields, so I did another mod to cure this.
But this year still no real test on rough ground done to report.
Cheers
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=346609#346609
Attachments:
http://forums.matronics.com//files/p1040651_487.jpg
http://forums.matronics.com//files/p1040677_379.jpg
Message 6
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| Subject: | Re: Undercarriage |
Hi Didier, Chris,
for dismantling the struts you may need two special spanners, as you see in the
photo above. Didier, you can have them for a while - winter, I think, would be
ideal for the job. Maybe we meet in Eggenfelden some day for you to pick them
up. Also I made up some sort of shoe horn to help the piston ring over the shoulder
in the strut. This is a pipe with 65mm o.d. and 62mm i.d. and ~200mm long
cut in two halves. The nose wheel is different by few mms, I can check sizes
later. The seals can be found in hydraulics industry supplies for piston rods
with 52mm and 50mm dia. as dust wipers. And next to these I put o-rings in
to keep the grease inside the strut. You need adapter rings for the seals to position
them in the milled nut where the felt was before.
The photo below shows the spring loaded damper valve with no backlash to get rid
of the knocking on rough airstrips. Still not yet tested on real rough stuff
but I am confident ...
Cheers
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=346704#346704
Attachments:
http://forums.matronics.com//files/damper_valve_orig_148.jpg
http://forums.matronics.com//files/main_gear_mod_160.jpg
http://forums.matronics.com//files/nose_gear_original_889.jpg
http://forums.matronics.com//files/nose_gear_mod_127.jpg
Message 7
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| Subject: | Re: Undercarriage |
G'Day Vic,
Thank for the photos.
I have printed them and will check it out later today.
Do you have any info on the seals that you bought such as manufacturer and
numbers?
Cheers,
Chris.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Vic
Sent: Sunday, 17 July 2011 10:18 AM
Subject: Yak-List: Re: Undercarriage
Hi Didier, Chris,
for dismantling the struts you may need two special spanners, as you see in
the photo above. Didier, you can have them for a while - winter, I think,
would be ideal for the job. Maybe we meet in Eggenfelden some day for you to
pick them up. Also I made up some sort of shoe horn to help the piston ring
over the shoulder in the strut. This is a pipe with 65mm o.d. and 62mm i.d.
and ~200mm long cut in two halves. The nose wheel is different by few mms, I
can check sizes later. The seals can be found in hydraulics industry
supplies for piston rods with 52mm and 50mm dia. as dust wipers. And next to
these I put o-rings in to keep the grease inside the strut. You need adapter
rings for the seals to position them in the milled nut where the felt was
before.
The photo below shows the spring loaded damper valve with no backlash to get
rid of the knocking on rough airstrips. Still not yet tested on real rough
stuff but I am confident ...
Cheers
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=346704#346704
Attachments:
http://forums.matronics.com//files/damper_valve_orig_148.jpg
http://forums.matronics.com//files/main_gear_mod_160.jpg
http://forums.matronics.com//files/nose_gear_original_889.jpg
http://forums.matronics.com//files/nose_gear_mod_127.jpg
Message 8
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Everyone considering OSH
Weather here is supposed to be very hot and very humid for the next 2 weeks.
Temps in mid 90's and heat index in mid 100's
Isolated thunderstorms, but overall not much precip forcast until end of the month.
I do not like long range forecasts, but thought this one may be pretty accurate
- so prepare appropriately.
Dr. Herb Coussons, MD
drc@wscare.com
2641 Development Drive
Green Bay, WI 54311
Cell 920-639-8434
Work 920-338-6868
Fax 920-338-6869
Message 9
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So, no wool coats, then?
On Jul 16, 2011, at 11:44 PM, Herb Coussons wrote:
>
> Everyone considering OSH
> Weather here is supposed to be very hot and very humid for the next 2 weeks.
> Temps in mid 90's and heat index in mid 100's
> Isolated thunderstorms, but overall not much precip forcast until end of the
month.
>
> I do not like long range forecasts, but thought this one may be pretty accurate
- so prepare appropriately.
>
>
> Dr. Herb Coussons, MD
> drc@wscare.com
> 2641 Development Drive
> Green Bay, WI 54311
> Cell 920-639-8434
> Work 920-338-6868
> Fax 920-338-6869
>
>
>
>
>
>
>
>
>
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