Today's Message Index:
----------------------
0. 07:50 AM - [Please Read] - Last Official Day of List Fund Raiser! (Matt Dralle)
1. 10:33 AM - Re: [Non-DoD Source] Re: tires for tailwheel Yak 50 (Bitterlich, Mark G CIV NAVAIR, WD)
2. 10:34 AM - Re: [Non-DoD Source] Re: tires for tailwheel Yak 50 (Bitterlich, Mark G CIV NAVAIR, WD)
3. 10:34 AM - Re: [Non-DoD Source] Re: tires for tailwheel Yak 50 (Bitterlich, Mark G CIV NAVAIR, WD)
4. 10:49 AM - Re: [Non-DoD Source] Re: tires for tailwheel Yak 50 (Bitterlich, Mark G CIV NAVAIR, WD)
5. 02:01 PM - Re: [Non-DoD Source] Re: tires for tailwheel Yak 50 (Bitterlich, Mark G CIV NAVAIR, WD)
6. 02:06 PM - Re: [Non-DoD Source] Re: tires for tailwheel Yak 50 (Bitterlich, Mark G CIV NAVAIR, WD)
7. 02:15 PM - tires for tailwheel Yak 50 (Bitterlich, Mark G CIV NAVAIR, WD)
8. 02:17 PM - Re: [Non-DoD Source] Re: tires for tailwheel Yak 50 (doug sapp)
9. 03:48 PM - [Non-DoD Source] Re: Gear up or down....forced landing (HawkerPilot2015)
10. 05:31 PM - Oil temp gauge??? (John B)
11. 05:48 PM - Re: FS: Yakovlev 52 - $8500 (TBPilot)
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| Subject: | [Please Read] - Last Official Day of List Fund Raiser! |
Dear Listers,
It's November 30th and that always means a couple of things. Its my birthday again
- 54! :-) But it also means that it's that last official day of the Matronics
Email List Fund Raiser! If you been thinking about picking up one of those
really nice incentive gifts now is the time to jump on it!!
If you've been meaning to make a Contribution this month but have been putting
it off for some reason, NOW is the time!
I will be posting the List of Contributors in a few days, so you'll probably want
to be known as a person that supported the Lists!
I want to thank everyone that has so generously made a Contribution this year in
support of our Lists. It is your generosity that keeps this operation running
and I don't ever forget it.
The List Contribution Web Site is fast and easy. Please support our habit by making
your Contribution right now:
http://www.matronics.com/contribution
Or, by dropping a personal check in the mail to:
Matt Dralle / Matronics
581 Jeannie Way
Livermore CA 94550
USA
Thank you in advance!
Matt Dralle
Matronics Email List Administrator
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| Subject: | Re: tires for tailwheel Yak 50 |
John, you might read what I posted about the size and shape of the Russian tire
on the YAK-50, and Sukhoi 26,29,31 model aircraft.
Jan, in reference to your question, I called Desser and they gave me incorrect
information (as per Dennis's post). They do not list a tail wheel tire for 50,
or the Sukhoi tail draggers which DO use the same tail wheel.
Before you go out and purchase a tire per John's suggestion, please have Desser
send you a picture of the tire first. I really have zero experience with the
YAK-55 tail wheel. It might use the same one or it might not. However, I am
99% certain that they have no exact replacement, which you would need in your
country.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of John B [jbsoar@gmail.com]
Sent: Wednesday, November 29, 2017 10:43 PM
Subject: Re: [Non-DoD Source] Re: Yak-List: tires for tailwheel Yak 50
Desser tire. 200x80 six ply tire. Smooth.
This fit fine on my 55, it should fit the 50 as well.
John B
On Wed, Nov 29, 2017 at 9:36 PM, A. Dennis Savarese <dsavarese0812@bellsouth.net<mailto:dsavarese0812@bellsouth.net>> wrote:
FYI - the 400 x 150 Tire is the same size as the NOSE tire on the Yak 52 and CJ6.
DEFINITELY NOT the Yak 50 tail wheel.
A. Dennis Savarese
334-546-8182<tel:334-546-8182> (mobile)
www.yak-52.com<http://www.yak-52.com>
Skype - Yakguy1
On 11/29/2017 4:07 PM, Bitterlich, Mark G CIV NAVAIR, WD wrote:
Jan sent me an email a few days ago asking this same question. I remember back
in the day that Desser was selling these tires and tubes and told him as much.
However, upon a close inspection of their Web Site, I could find no reference
to same so I suggested he ask the YAK List. Who all tell him to go to Desser
tire, but with no specifics.
John mentions that he got a tire and tube from Desser for his YAK-55. My question
for John is this: John, is this the proper Russian tire, is it mounted on
a Russian wheel?
The fact is that the YAK-50, the Sukhoi 26,29,31 all use the same wheel and tire.
I am not sure about the 55 because it can be a one off in a number of ways
and it may not be the same one that is used on the 50, because the whole tailwheel
design is different on a 55.
That being said, I called Desser five minutes ago. They could not come up with
an answer, so they started asking around the office, and then came up and said:
"Oh you need a 400x150 Six ply tire, part number AA454 and tube GL-4067 " So
I went and looked up that number. The picture shows a RIBBED STANDARD TIRE.
This is very interesting since the Russian WHEELS had a segmented wheel with
indents that fit into cut out indents in the tire itself, to prevent slippage
of the tire to the wheel. The Russian tires are not ribbed. They are solid
rubber rounded tires smooth. They have molded segments to fit the wheel as
I just described.
So whatever Desser is selling, it is not a copy of the Russian tire. Will it
fit on a Russian wheel? It might. And since it uses a tube, it would hold
air. Would it fit the wheel the way the Russians meant it to? No way. How
safe, or unsafe would that be? I don't know that either, but it's "Experimental"
so whatever works is OK, right? Well, not in Europe.
Personally Jan, I would not purchase this tire and tube, unless you can come up
with a wheel that it was meant to mount on, that fits the axle on your 50.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com<mailto:owner-yak-list-server@matronics.com> [mailto:owner-yak-list-server@matronics.com<mailto:owner-yak-list-server@matronics.com>] On Behalf Of John B
Sent: Wednesday, November 29, 2017 10:27 AM
Subject: [Non-DoD Source] Re: Yak-List: tires for tailwheel Yak 50
Desser Tire has the tire and tube for the Yak 55 tailwheel. I believe the same
tailwheel is used on Yak 50.
John B
Sent from my iPhone
On Nov 29, 2017, at 8:54 AM, Jan Mevis <j.mevis@computer.org<mailto:j.mevis@computer.org>> wrote:
Dear all,
Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become very difficult.
I think that the same tires are used for the Sukhoi aerobatic planes.
As far as I know, the Russian sources are dried up.
Does anyone on the list have an idea or any experience, maybe an address of a company
that can make them?
Jan Mevis
Yak 50
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eferrer" target="_blank">http://forums.matronics.com
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WIKI -
errer" target="_blank">http://wiki.matronics.com
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b Site -
-Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
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| Subject: | Re: tires for tailwheel Yak 50 |
Thanks Walt. As I mentioned, they really were rather lost in space with the question
to begin with.
Mark
________________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of Walter Lannon [wlannon@shaw.ca]
Sent: Wednesday, November 29, 2017 10:51 PM
Subject: Re: [Non-DoD Source] Re: Yak-List: tires for tailwheel Yak 50
Hi Mark;
The tire number you received from Desser (400 X 150) is the nose wheel tire
for the CJ6 (and Yak 52?). Inch dimensions approx. 6 X 14.7.
Cheers;
Walt
-----Original Message-----
From: Bitterlich, Mark G CIV NAVAIR, WD
Sent: Wednesday, November 29, 2017 1:07 PM
Subject: RE: [Non-DoD Source] Re: Yak-List: tires for tailwheel Yak 50
<mark.bitterlich@navy.mil>
Jan sent me an email a few days ago asking this same question. I remember
back in the day that Desser was selling these tires and tubes and told him
as much. However, upon a close inspection of their Web Site, I could find
no reference to same so I suggested he ask the YAK List. Who all tell him
to go to Desser tire, but with no specifics.
John mentions that he got a tire and tube from Desser for his YAK-55. My
question for John is this: John, is this the proper Russian tire, is it
mounted on a Russian wheel?
The fact is that the YAK-50, the Sukhoi 26,29,31 all use the same wheel and
tire. I am not sure about the 55 because it can be a one off in a number
of ways and it may not be the same one that is used on the 50, because the
whole tailwheel design is different on a 55.
That being said, I called Desser five minutes ago. They could not come up
with an answer, so they started asking around the office, and then came up
and said:
"Oh you need a 400x150 Six ply tire, part number AA454 and tube GL-4067 "
So I went and looked up that number. The picture shows a RIBBED STANDARD
TIRE. This is very interesting since the Russian WHEELS had a segmented
wheel with indents that fit into cut out indents in the tire itself, to
prevent slippage of the tire to the wheel. The Russian tires are not
ribbed. They are solid rubber rounded tires smooth. They have molded
segments to fit the wheel as I just described.
So whatever Desser is selling, it is not a copy of the Russian tire. Will
it fit on a Russian wheel? It might. And since it uses a tube, it would
hold air. Would it fit the wheel the way the Russians meant it to? No way.
How safe, or unsafe would that be? I don't know that either, but it's
"Experimental" so whatever works is OK, right? Well, not in Europe.
Personally Jan, I would not purchase this tire and tube, unless you can come
up with a wheel that it was meant to mount on, that fits the axle on your
50.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of John B
Sent: Wednesday, November 29, 2017 10:27 AM
Subject: [Non-DoD Source] Re: Yak-List: tires for tailwheel Yak 50
Desser Tire has the tire and tube for the Yak 55 tailwheel. I believe the
same tailwheel is used on Yak 50.
John B
Sent from my iPhone
> On Nov 29, 2017, at 8:54 AM, Jan Mevis <j.mevis@computer.org> wrote:
>
> Dear all,
>
> Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become
> very difficult.
> I think that the same tires are used for the Sukhoi aerobatic planes.
> As far as I know, the Russian sources are dried up.
>
> Does anyone on the list have an idea or any experience, maybe an address
> of a company that can make them?
>
> Jan Mevis
> Yak 50
---
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| Subject: | tires for tailwheel Yak 50 |
I guess I'll need to take pictures to explain what I am talking about.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of Royden Heays [heaysr@telus.net]
Sent: Wednesday, November 29, 2017 11:51 PM
Subject: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
I agree with John B
Desser have the 80 by 200 smooth tyre, which fits the Russian tailwheel (beautifully).
Albeit, its hard to find on their website.
Regards
Royden
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Wednesday, November 29, 2017 6:54 AM
Subject: Yak-List: tires for tailwheel Yak 50
Dear all,
Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become very difficult.
I think that the same tires are used for the Sukhoi aerobatic planes.
As far as I know, the Russian sources are dried up.
Does anyone on the list have an idea or any experience, maybe an address of a company
that can make them?
Jan Mevis
Yak 50
Message 4
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| Subject: | tires for tailwheel Yak 50 |
Gents, there is nothing to agree with or disagree with here.
What I said is that Desser does not sell an exact replacement for the Russian tire.
I did not say that they did not have another tire that would mount on the
wheel. The assumption in a lot of cases is that every Yak aircraft is an Experimental
Exhibition aircraft in the United States. That of course is not the
case, and the rules in a foreign country are not the rules that we have here.
This is why I was, and still am, cautious about suggesting to Jan (who does
not live in the United States) that he put on any tire that happens to fit.
There is a difference between "it will fit on" and it is "an exact replacement".
To be specific, I have no doubt that Royden is correct and that the 80x200 smooth
type tire will fit the wheel. I also have no doubt that with a tube, the Russian
wheel indentations will make no impact, since indeed this tire does not
have a brake on it! If Jan's inspectors are OK, with it, then it is good to
go. However, there is a chance that they will not. And this is one of those
cases where if he put that tire on there, and then for whatever reason there
was an accident, questions might be asked if it were discovered.
Just for grins I will take pictures and send them to explain what I am making a
(small) point of.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of Royden Heays [heaysr@telus.net]
Sent: Wednesday, November 29, 2017 11:51 PM
Subject: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
I agree with John B
Desser have the 80 by 200 smooth tyre, which fits the Russian tailwheel (beautifully).
Albeit, its hard to find on their website.
Regards
Royden
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Wednesday, November 29, 2017 6:54 AM
Subject: Yak-List: tires for tailwheel Yak 50
Dear all,
Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become very difficult.
I think that the same tires are used for the Sukhoi aerobatic planes.
As far as I know, the Russian sources are dried up.
Does anyone on the list have an idea or any experience, maybe an address of a company
that can make them?
Jan Mevis
Yak 50
Message 5
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| Subject: | tires for tailwheel Yak 50 |
I have no idea if this picture will make it to the Yak-List, but it is sent
individually to all who replied. If anyone else is interested, let me kno
w and I will forward it.
In the picture you can clearly see the inner rim of the tire, that has inde
ntations that exactly match the opposite indentations in the Russian wheel
itself. I've never seen a design like this other than on Eastern Bloc airc
raft. The Desser tire (80x200 smooth) does not have this design. It has a
standard inner rim that is simply round and smooth. Putting that tire (De
sser) on the Russian wheel will result in uneven contact from the tire to t
he wheel itself. What is the possible impact from that? In the worst cas
e scenario, when the tire contacts the runway and comes up to speed, it wou
ld slip on the wheel itself causing the tube to be pulled, and the inflatio
n tube to be broken, thus flattening the tire. That is the exact reason th
e Russians designed their wheels and tires the way they did. The indentati
ons on the tire that mate with the wheel make spinning the tire on the whee
l well nigh impossible. It is entirely possible that putting a smooth inn
er ring Desser tire on the Russian wheel would cause the tire to "form" to
the Russian wheel simply by the pressure of the inner tube. That would be
the best case scenario. The simple fact is that various people have put th
is tire on the Russian wheel (apparently) and nothing bad has happened yet!
So it is an Experiment. And those with Experimental Exhibition aircraft
really have nothing to worry about, more or less.
But the Desser tire is not a "perfect fit". It is the same size yes, but t
he design of the Desser tire was not ,meant to go on a Russian wheel.
Mark
________________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.
com] on behalf of Bitterlich, Mark G CIV NAVAIR, WD [mark.bitterlich@navy.m
il]
Sent: Thursday, November 30, 2017 1:49 PM
Subject: RE: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
itterlich@navy.mil>
Gents, there is nothing to agree with or disagree with here.
What I said is that Desser does not sell an exact replacement for the Russi
an tire. I did not say that they did not have another tire that would moun
t on the wheel. The assumption in a lot of cases is that every Yak aircra
ft is an Experimental Exhibition aircraft in the United States. That of co
urse is not the case, and the rules in a foreign country are not the rules
that we have here. This is why I was, and still am, cautious about sugges
ting to Jan (who does not live in the United States) that he put on any tir
e that happens to fit. There is a difference between "it will fit on" and
it is "an exact replacement".
To be specific, I have no doubt that Royden is correct and that the 80x200
smooth type tire will fit the wheel. I also have no doubt that with a tube
, the Russian wheel indentations will make no impact, since indeed this tir
e does not have a brake on it! If Jan's inspectors are OK, with it, then
it is good to go. However, there is a chance that they will not. And th
is is one of those cases where if he put that tire on there, and then for w
hatever reason there was an accident, questions might be asked if it were d
iscovered.
Just for grins I will take pictures and send them to explain what I am maki
ng a (small) point of.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.
com] on behalf of Royden Heays [heaysr@telus.net]
Sent: Wednesday, November 29, 2017 11:51 PM
Subject: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
I agree with John B
Desser have the 80 by 200 smooth tyre, which fits the Russian tailwheel (be
autifully). Albeit, it=92s hard to find on their website.
Regards
Royden
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@mat
ronics.com] On Behalf Of Jan Mevis
Sent: Wednesday, November 29, 2017 6:54 AM
Subject: Yak-List: tires for tailwheel Yak 50
Dear all,
Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become ve
ry difficult.
I think that the same tires are used for the Sukhoi aerobatic planes.
As far as I know, the Russian sources are dried up.
Does anyone on the list have an idea or any experience, maybe an address of
a company that can make them?
Jan Mevis
Yak 50
===========
Message 6
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| Subject: | tires for tailwheel Yak 50 |
By the way, (Jan) the part number for the Desser tire is: DTR1290 About $70.
If I had nothing else, I would use it, just like these folks recommended. But
in so doing, I would also put a crayon mark on the tire and wheel and check for
any slippage just to be sure.
Mark
________________________________________
From: Bitterlich, Mark G CIV NAVAIR, WD
Sent: Thursday, November 30, 2017 4:58 PM
Cc: heaysr@telus.net; dsavarese0812@bellsouth.net; j.mevis@computer.org; jbsoar@gmail.com;
wlannon@shaw.ca
Subject: RE: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
I have no idea if this picture will make it to the Yak-List, but it is sent individually
to all who replied. If anyone else is interested, let me know and I
will forward it.
In the picture you can clearly see the inner rim of the tire, that has indentations
that exactly match the opposite indentations in the Russian wheel itself.
I've never seen a design like this other than on Eastern Bloc aircraft. The
Desser tire (80x200 smooth) does not have this design. It has a standard inner
rim that is simply round and smooth. Putting that tire (Desser) on the Russian
wheel will result in uneven contact from the tire to the wheel itself. What
is the possible impact from that? In the worst case scenario, when the tire
contacts the runway and comes up to speed, it would slip on the wheel itself
causing the tube to be pulled, and the inflation tube to be broken, thus flattening
the tire. That is the exact reason the Russians designed their wheels
and tires the way they did. The indentations on the tire that mate with the
wheel make spinning the tire on the wheel well nigh impossible. It is entirely
possible that putting a smooth inner ring Desser tire on the Russian wheel
would cause the tire to "form" to the Russian wheel simply by the pressure of
the inner tube. That would be the best case scenario. The simple fact is that
various people have put this tire on the Russian wheel (apparently) and nothing
bad has happened yet! So it is an Experiment. And those with Experimental
Exhibition aircraft really have nothing to worry about, more or less.
But the Desser tire is not a "perfect fit". It is the same size yes, but the design
of the Desser tire was not ,meant to go on a Russian wheel.
Mark
________________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of Bitterlich, Mark G CIV NAVAIR, WD [mark.bitterlich@navy.mil]
Sent: Thursday, November 30, 2017 1:49 PM
Subject: RE: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
Gents, there is nothing to agree with or disagree with here.
What I said is that Desser does not sell an exact replacement for the Russian tire.
I did not say that they did not have another tire that would mount on the
wheel. The assumption in a lot of cases is that every Yak aircraft is an Experimental
Exhibition aircraft in the United States. That of course is not the
case, and the rules in a foreign country are not the rules that we have here.
This is why I was, and still am, cautious about suggesting to Jan (who does
not live in the United States) that he put on any tire that happens to fit.
There is a difference between "it will fit on" and it is "an exact replacement".
To be specific, I have no doubt that Royden is correct and that the 80x200 smooth
type tire will fit the wheel. I also have no doubt that with a tube, the Russian
wheel indentations will make no impact, since indeed this tire does not
have a brake on it! If Jan's inspectors are OK, with it, then it is good to
go. However, there is a chance that they will not. And this is one of those
cases where if he put that tire on there, and then for whatever reason there
was an accident, questions might be asked if it were discovered.
Just for grins I will take pictures and send them to explain what I am making a
(small) point of.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of Royden Heays [heaysr@telus.net]
Sent: Wednesday, November 29, 2017 11:51 PM
Subject: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
I agree with John B
Desser have the 80 by 200 smooth tyre, which fits the Russian tailwheel (beautifully).
Albeit, its hard to find on their website.
Regards
Royden
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Wednesday, November 29, 2017 6:54 AM
Subject: Yak-List: tires for tailwheel Yak 50
Dear all,
Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become very difficult.
I think that the same tires are used for the Sukhoi aerobatic planes.
As far as I know, the Russian sources are dried up.
Does anyone on the list have an idea or any experience, maybe an address of a company
that can make them?
Jan Mevis
Yak 50
Message 7
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| Subject: | tires for tailwheel Yak 50 |
I have no idea if this picture will make it to the Yak-List, but it is sent
individually to all who replied. If anyone else is interested, let me kno
w and I will forward it.
In the picture you can clearly see the inner rim of the tire, that has inde
ntations that exactly match the opposite indentations in the Russian wheel
itself. I've never seen a design like this other than on Eastern Bloc airc
raft. The Desser tire (80x200 smooth) does not have this design. It has a
standard inner rim that is simply round and smooth. Putting that tire (De
sser) on the Russian wheel will result in uneven contact from the tire to t
he wheel itself. What is the possible impact from that? In the worst cas
e scenario, when the tire contacts the runway and comes up to speed, it wou
ld slip on the wheel itself causing the tube to be pulled, and the inflatio
n tube to be broken, thus flattening the tire. That is the exact reason th
e Russians designed their wheels and tires the way they did. The indentati
ons on the tire that mate with the wheel make spinning the tire on the whee
l well nigh impossible. It is entirely possible that putting a smooth inn
er ring Desser tire on the Russian wheel would cause the tire to "form" to
the Russian wheel simply by the pressure of the inner tube. That would be
the best case scenario. The simple fact is that various people have put th
is tire on the Russian wheel (apparently) and nothing bad has happened yet!
So it is an Experiment. And those with Experimental Exhibition aircraft
really have nothing to worry about, more or less.
But the Desser tire is not a "perfect fit". It is the same size yes, but t
he design of the Desser tire was not ,meant to go on a Russian wheel.
Mark
________________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.
com] on behalf of Bitterlich, Mark G CIV NAVAIR, WD [mark.bitterlich@navy.m
il]
Sent: Thursday, November 30, 2017 1:49 PM
Subject: RE: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
itterlich@navy.mil>
Gents, there is nothing to agree with or disagree with here.
What I said is that Desser does not sell an exact replacement for the Russi
an tire. I did not say that they did not have another tire that would moun
t on the wheel. The assumption in a lot of cases is that every Yak aircra
ft is an Experimental Exhibition aircraft in the United States. That of co
urse is not the case, and the rules in a foreign country are not the rules
that we have here. This is why I was, and still am, cautious about sugges
ting to Jan (who does not live in the United States) that he put on any tir
e that happens to fit. There is a difference between "it will fit on" and
it is "an exact replacement".
To be specific, I have no doubt that Royden is correct and that the 80x200
smooth type tire will fit the wheel. I also have no doubt that with a tube
, the Russian wheel indentations will make no impact, since indeed this tir
e does not have a brake on it! If Jan's inspectors are OK, with it, then
it is good to go. However, there is a chance that they will not. And th
is is one of those cases where if he put that tire on there, and then for w
hatever reason there was an accident, questions might be asked if it were d
iscovered.
Just for grins I will take pictures and send them to explain what I am maki
ng a (small) point of.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.
com] on behalf of Royden Heays [heaysr@telus.net]
Sent: Wednesday, November 29, 2017 11:51 PM
Subject: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
I agree with John B
Desser have the 80 by 200 smooth tyre, which fits the Russian tailwheel (be
autifully). Albeit, it=92s hard to find on their website.
Regards
Royden
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@mat
ronics.com] On Behalf Of Jan Mevis
Sent: Wednesday, November 29, 2017 6:54 AM
Subject: Yak-List: tires for tailwheel Yak 50
Dear all,
Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become ve
ry difficult.
I think that the same tires are used for the Sukhoi aerobatic planes.
As far as I know, the Russian sources are dried up.
Does anyone on the list have an idea or any experience, maybe an address of
a company that can make them?
Jan Mevis
Yak 50
===========
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| Subject: | Re: tires for tailwheel Yak 50 |
I do believe I can access that 200:80 ribbed tire out of china. 60 days
out.
Doug
On Thu, Nov 30, 2017 at 1:58 PM, Bitterlich, Mark G CIV NAVAIR, WD <
mark.bitterlich@navy.mil> wrote:
> I have no idea if this picture will make it to the Yak-List, but it is
> sent individually to all who replied. If anyone else is interested, let
me
> know and I will forward it.
>
> In the picture you can clearly see the inner rim of the tire, that has
> indentations that exactly match the opposite indentations in the Russian
> wheel itself. I've never seen a design like this other than on Eastern
> Bloc aircraft. The Desser tire (80x200 smooth) does not have this design
.
> It has a standard inner rim that is simply round and smooth. Putting tha
t
> tire (Desser) on the Russian wheel will result in uneven contact from the
> tire to the wheel itself. What is the possible impact from that? In th
e
> worst case scenario, when the tire contacts the runway and comes up to
> speed, it would slip on the wheel itself causing the tube to be pulled, a
nd
> the inflation tube to be broken, thus flattening the tire. That is the
> exact reason the Russians designed their wheels and tires the way they
> did. The indentations on the tire that mate with the wheel make spinning
> the tire on the wheel well nigh impossible. It is entirely possible tha
t
> putting a smooth inner ring Desser tire on the Russian wheel would cause
> the tire to "form" to the Russian wheel simply by the pressure of the inn
er
> tube. That would be the best case scenario. The simple fact is that
> various people have put this tire on the Russian wheel (apparently) and
> nothing bad has happened yet! So it is an Experiment. And those with
> Experimental Exhibition aircraft really have nothing to worry about, more
> or less.
>
> But the Desser tire is not a "perfect fit". It is the same size yes, but
> the design of the Desser tire was not ,meant to go on a Russian wheel.
>
> Mark
>
>
> ________________________________________
> From: owner-yak-list-server@matronics.com [owner-yak-list-server@
> matronics.com] on behalf of Bitterlich, Mark G CIV NAVAIR, WD [
> mark.bitterlich@navy.mil]
> Sent: Thursday, November 30, 2017 1:49 PM
> To: yak-list@matronics.com
> Subject: RE: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
>
> mark.bitterlich@navy.mil>
>
> Gents, there is nothing to agree with or disagree with here.
>
>
> What I said is that Desser does not sell an exact replacement for the
> Russian tire. I did not say that they did not have another tire that wou
ld
> mount on the wheel. The assumption in a lot of cases is that every Yak
> aircraft is an Experimental Exhibition aircraft in the United States. Th
at
> of course is not the case, and the rules in a foreign country are not the
> rules that we have here. This is why I was, and still am, cautious abou
t
> suggesting to Jan (who does not live in the United States) that he put on
> any tire that happens to fit. There is a difference between "it will fit
> on" and it is "an exact replacement".
>
>
> To be specific, I have no doubt that Royden is correct and that the 80x20
0
> smooth type tire will fit the wheel. I also have no doubt that with a
> tube, the Russian wheel indentations will make no impact, since indeed th
is
> tire does not have a brake on it! If Jan's inspectors are OK, with it,
> then it is good to go. However, there is a chance that they will not.
> And this is one of those cases where if he put that tire on there, and
> then for whatever reason there was an accident, questions might be asked
if
> it were discovered.
>
>
> Just for grins I will take pictures and send them to explain what I am
> making a (small) point of.
>
>
> Mark
>
>
> ________________________________
> From: owner-yak-list-server@matronics.com [owner-yak-list-server@
> matronics.com] on behalf of Royden Heays [heaysr@telus.net]
> Sent: Wednesday, November 29, 2017 11:51 PM
> To: yak-list@matronics.com
> Subject: [Non-DoD Source] RE: Yak-List: tires for tailwheel Yak 50
>
> I agree with John B
>
> Desser have the 80 by 200 smooth tyre, which fits the Russian tailwheel
> (beautifully). Albeit, it=99s hard to find on their website.
>
> Regards
>
> Royden
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@
> matronics.com] On Behalf Of Jan Mevis
> Sent: Wednesday, November 29, 2017 6:54 AM
> To: yak-list@matronics.com
> Subject: Yak-List: tires for tailwheel Yak 50
>
> Dear all,
>
> Finding tires (plus the inner tubes) for the Yak 50 tailwheel has become
> very difficult.
> I think that the same tires are used for the Sukhoi aerobatic planes.
> As far as I know, the Russian sources are dried up.
>
> Does anyone on the list have an idea or any experience, maybe an address
> of a company that can make them?
>
> Jan Mevis
> Yak 50
>
> ==========
Message 9
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| Subject: | Re: [Non-DoD Source] Re: Gear up or down....forced landing |
https://vimeo.com/242882855
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=476051#476051
Message 10
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| Subject: | Oil temp gauge??? |
Group-
The Yak 55M we are working on has an oil temperature gauge with a needle
that won't "jump," when the engine instruments are turned on.
The fuel pressure and oil pressure gauge needles "jump,' or move a little
bit, when the engine instrument switch is turned on.
Is this normal? I do have power going to the gauge. Do I have a faulty
instrument?
Thank you.
John B
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| Subject: | Re: FS: Yakovlev 52 - $8500 |
Hi Kendel,
I've discussed with some Yak/CJ pilots up here in Phoenix and we are interested
in the plane if we can get some photos to look at. Can you provide photos from
different views? We are particularly interested in the engine. This would
help us in making our decision.
Thanks,
Tim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=476053#476053
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