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Redesign and reconstruction of the Oldest Taurus on Earth

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Old 07-20-2009 | 03:55 AM
  #576  
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents.

Sometimes it looks like the data does show up them selves.
Problem is to select the right data.
This was probably wrong, post of Ed Kazmirski Taurus, because we already did see another date before.

ORIGINAL: pimmnz

Won't be a K&B, too early for that. It's Ed and his Orion, of course, probably a Veco .35/45 and it looks like one of the Orions he took to the 1960 worlds.
Evan.
Now I also do have the double check information, so this is the official date in my "Taurus Construction and Flying Schedule" for the engine for the Oldest Taurus on Earth and the Orion, and of course it fits.

Torpedo 0.45 RC (see picture 2)
Date 1959
0.446 glow engine with barrel throttle and exhaust butterfly valve

When I read all the problems with the ball bearings these days than its clear the reliability is unlimited (vertical) of the K & B 45 with the ball-less bearing. I think the difference with the VECO 45 RC is for the bearing of the crankshaft about 23 components!
Picture 3 part of the HIGH RES image of the K & B engine of the "Oldest Taurus on the Earth".

Oh BTW today it is 40 years ago the voyage did start for the "Oldest Walk on the Moon".

Cees
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Old 07-21-2009 | 12:35 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Of course, had you looked at your Orion plan, which you must have in order to modify you own version, then you would have seen that the engine drawn is called out as the K&B .45 R/C. We were wondering why you even needed to ask...?
Evan.
Old 07-21-2009 | 04:08 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

ORIGINAL: pimmnz

Of course, had you looked at your Orion plan, which you must have in order to modify you own version, then you would have seen that the engine drawn is called out as the K&B .45 R/C. We were wondering why you even needed to ask...?
Evan.
pimmnz,

I only can use real facts!

There was a long period I thought it also could be a K & B 45 with Bramco drossel (8/27/2008).

When an subject does get my attention, I am going to look for “hard” data at least 2 but I like more.
We all know drawings/plans always are made for commercial reasons (think about the Frank Myers plans), the pilots did not use drawings themselves just I do not. Some detailed sketches will do to make a contest plane because for months you are changing too many things.

Plans we find these days always can be changed with later motordata.
My planes I did build all from "own plans", the basics were copy's in "inches" and of smaller dimensions. For that look to the first pictures I did show of the Orion plans in Ed Kazmirski's Taurus thread.
Because I did make my own plans I also do know any detail.

For that I need original basic data for my both Taurusses because they were both “first examples”

For example, the original name on the preproduction Top Flite Taurus Ed did use in 1962!
This Taurus is older than all the later Top Flite “kit” or “plan” Taurusses.
We never did see the original basic sketches/plans/drawings of this plane, only the plans we see later in the MAN magazine and Top Flite kit.

For five years it is my goal to make my plane as original as possible, read my messeges of 2004, in the Top Flite Taurus thread!
After I did ask Charles Winter the photo to reconstruct the name, what did happen?

Read your own post 1607 back and that from Kingaltair 1611 in the Ed Kazmirski’s Taurus thread on, page 65.
http://www.rcuniverse.com/forum/m_76...tm.htm#8799149

You both did not understand that I was searching for the original name of the Top Flite preproduction Taurus Ed did fly in 1962.
Why I do this all?
I do this, so it is possible to make a second crate picture when that’s needed in the furure.
My thread for that is not a normal build thread, always important to know.

Cees
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Old 07-21-2009 | 11:57 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Ahh, I see, you drew your own plans then. Just for any other visitor to your thread then, there are, as far as I can find, only two sources for the 'original' Orion plan, the Top Flite kit plan and the MAN plan, same deal as the later Taurus drawings, both identical, but the MAN version, which is still available, has all the sections and ribs drawn. Both show the K&B engine. The MAN version is also published in the MAN magazine, can't remember the date, but again, with a long explanation by Ed of the thought process used to modify Astro Hog to Orion. You may have read it?
Evan.
Old 07-22-2009 | 05:03 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth


ORIGINAL: pimmnz

Ahh, I see, you drew your own plans then. Just for any other visitor to your thread then, there are, as far as I can find, only two sources for the 'original' Orion plan, the Top Flite kit plan and the MAN plan, same deal as the later Taurus drawings, both identical, but the MAN version, which is still available, has all the sections and ribs drawn. Both show the K&B engine. The MAN version is also published in the MAN magazine, can't remember the date, but again, with a long explanation by Ed of the thought process used to modify Astro Hog to Orion. You may have read it?
Evan.
I did use the plans that are visible on "uncle willie’s plans, page 22", typical Dutch and cheap!
Just as some others did with the Taurus in 2004, I did build the Orion bigger, heavier and with retracts, so I did have to redesign the Orion completely and didn't need the details anyway.


Cees
Old 07-22-2009 | 01:55 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,

Classic Pattern Flying.
I did read Ed Kazmirski often did look to the real airplanes, see the frise ailerons of the Orion etc.
(For that) I show you one of my own important books, picture 1.

This book is written in 1945 in the Dutch language, has 352 pages.
Engineering and calculations for real airplanes of wood- and combined wood and metal structures.

Examples:
picture 2 page 65 stability and position of CG
picture 3 page 69 calculation of thrust line forces and in relation of position of CG.
picture 4 page 109 calculation of spars, wings, sheeting, tail feathers etc.
picture 5 page 155 all kind of flaps and ailerons, and mounting them on wing ribs and TE spars of wings
picture 6 page 219 calculation of landing gear and brake forces on the fuselage structure.

Content also all data of wood and steel, calculation for engine mounting etc.

For who is interested in airplanes. You will find these kind of books in any country, any language.
Often I use this book to check important calculations for my models, used principles and details of construction.

Cees
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Old 07-22-2009 | 07:40 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

I did use the plans that are visible on "uncle willie’s plans, page 22", typical Dutch and cheap!
Just as some others did with the Taurus in 2004, I did build the Orion bigger, heavier and with retracts, so I did have to redesign the Orion completely and didn't need the details anyway.


Cees
Quite honestly then, in my eyes (anyways), Your "redesigned" Orion really isn't an Orion. It has far too many modifications, inverted engine, reshaped nose, etc. But mostly the addition of retracts really ruins the looks of such a classic model and takes it out of the "classic" category. Not trying to start anything, just my opinion.

FB
Old 07-23-2009 | 08:47 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

ORIGINAL: Free Bird

I did use the plans that are visible on ''uncle willie’s plans, page 22'', typical Dutch and cheap!
Just as some others did with the Taurus in 2004, I did build the Orion bigger, heavier and with retracts, so I did have to redesign the Orion completely and didn't need the details anyway.


Cees
Quite honestly then, in my eyes (anyways), Your ''redesigned'' Orion really isn't an Orion. It has far too many modifications, inverted engine, reshaped nose, etc. But mostly the addition of retracts really ruins the looks of such a classic model and takes it out of the ''classic'' category. Not trying to start anything, just my opinion.

FB
Free Bird,

Thanks to react.
Your post is the prove we all have a different taste and a way of doing our hobby.
For that I already did expect your post.
See “Classic Pattern Plane Image-base ”, page 12, post 282. 13 June 2009

http://www.rcuniverse.com/forum/m_69...page_12/tm.htm

ORIGINAL: Taurus Flyer

CAsniffer,

Message shortened by Taurus Flyer

A long time ago I saw my Orion was mentioned in the database.
About that Orion.
I have to say it isn't a real Orion, inverted engine, retracts, not the exact fin and rudder, larger.
When there is a ''better'' picture, it maybe is good to remove the Orion to keep the database ''clean''.
Of course it is no problem when you not change the situation, I only want to write you this.

Cees
I also did get other spontaneously posts of pilots in the past, about what they think of my Orion, for these examples see this thread, post 4 (picture 3 is one of this post)

http://www.rcuniverse.com/forum/m_58...tm.htm#5837123


Page 1, post 5, buzzard bait


Beautiful Orion! The retractable gear and inverted engine give it a completely different looknever would have guessed it would work so well.

(Message shortened by Taurus Flyer)

Jim


Page 1, Post 8, NM2K

That is a beautiful Orion. I would never have thought to employ retractable gear and the inverted engine with that particular plane. Bravo!

Ed Cregger


About this project, topic.

I always build scratch (only wood) and I can design and/or change nearly any model airplane I want.
It is a different way when compare with your way of building, read your own thread: Got Plans - Need Article

http://www.rcuniverse.com/forum/m_63...tm.htm#6323026

Copy I can when I have a few good pictures of a model and some basic data
I am not the only one. For that I did make the picture 2 of the article about the “Nixie” (wedj), we did see in one of the posts of the Ed Kazmirski’s Taurus thread.

That was for me really the goal: “Redesign and reconstruction of the Oldest Taurus on Earth” the first contest Taurus of Ed Kazmirski using any possibility and trick I could find.
When I am enthusiast I do not hesitate to start my next project.

Picture 1:
Oldest Taurus on Earth, replica of the first contest Taurus of Ed Kazmirski.
Only goal of this project! Nothing else!

The Orion? Only for “sport and research”.
Own design gear, pressure controllers for engine fuel and tank, tank fuel level measurement.

Cees


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Old 07-27-2009 | 05:06 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth


ORIGINAL: Taurus Flyer

Gents,

If somebody has pictures of 1961 of USA pattern flying I am interested, any date, any place!
I need them to fill a black hole in the history of the USA Pattern Flying as good as possible.

Cees
I already did receive a few, but I think there are more pictures to show!

Cees
Old 08-04-2009 | 09:33 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,

we often read about problems with the fuel tank of model air planes. Too high positioned!!?
I do make a post in my own thread so I can use it in the future again and gain!!

Some history of the tank lay-out,
page 2 of Classic Pattern Flying.

http://www.rcuniverse.com/forum/m_3146645/tm.htm

The last message about this subject of Tomlee, post 80
http://www.rcuniverse.com/forum/m_52...mpage_4/tm.htm post 80”

But also Rendegade, post 8, some time ago.
http://www.rcuniverse.com/forum/m_65.../tm.htm#654111 post 8

And there will be much more!!!

We can read always a lot of advices and never see any drawing.
Sometimes there are even people who let us build nearly a new plane or talking about complicated solutions!

WRONG

When you THINK the tank is too high positioned in your plane try what Evangelista did show us.
Evangelista Torricelli did show us in the very past there can be a vacuum above the liquid surface generated, see also page 15 of this thread.
The vacuum above the fuel is generated after some drops of fuel do flow out the tank to the engine (or after reverse the fuel supply pump a moment!).
What to do? Simple make the air inlet in the tank on the same level as the spray bar (in horizontal flight position, cruise speed)

I already did show the design of the first contest Taurus of Ed was made for this most optimum tank lay-out, see sketch picture 2,
See, when the tank is full, also in that situation there can be a fuel flow to the engine?

I show again this lay-out (see page 15) , now with added a fill facility, “remove before fill” in the dotted line, so three tank connections if you want. After filling the tank, it is important to close the second air inlet tube again!
Without this facility you can fill the tank only in vertical nose up position of the plane! (never get an answer for that question in the past!)

BTW
I do not know the name “Uni-flow” (See Tomlee) as I read in the last “problem post” answer , but maybe that is the modern name for this old and forgotten lay-out.

This tank lay out eliminates a lot of the difference between normal and inverted flight with a full tank and for that reason was used in the past for pattern (and C/L!) to combine with the bleed air carb.

When the engine “run” there can be one airflow throught the air inlet connection so you do not spil fuel during “inverted” flight.

In normal flight there can be a more ‘constant’ fuel / air ratio as result of underpressure in a “full” fuel tank

Don’t you want any drop of fuel on the floor in the pits, even when the environmental temperature rizes? A clip over the fuel line between tank and carb is the proven solution, see some old pictures.

After you do try this method and it does not work, you mights change anything in your plane, but first I did want to show you this “OLD” solution, I also use myself.
Oh and BTW look to this antique drink bottle for our little birds! (picture 3), Ed Kazmriski wasn't the only one who already did know it all in the past!

More to come


Cees
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Old 08-05-2009 | 08:15 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Free Bird,

Thanks to react.
Your post is the prove we all have a different taste and a way of doing our hobby.
Cees, you are very correct with your above statement. I'm somewhat of a purist when comes to vintage models, hence my remarks. I think what you did with the Orion is very nice, just not my cup of tea. Peace!

FB
Old 08-05-2009 | 04:47 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Free Bird,

My Orion is a product of April 2004 has nothing to do with vintage pattern flying, for that see the Top Flite Taurus thread.
The only way to mount this big engine was “inverted”. Some pictures I did make to show the drag of a “cup of tea” on the fuselage. (picture 1 and 2)
This Orion did make last weekend again 3 successful flights on a new field.

When you are really interested in classic pattern flying , what is YOUR opinion about my Oldest Taurus on Earth, because that’s the goal of this thread and you are an USA member?
(picture 3).

Cees
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Old 08-07-2009 | 04:29 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,

Waiting for the opinion of Free Bird I do show some pictures.
(He calls himself "Free Bird", so the opinion for sure will follow, nobody will stop him!)

Picture 1 the inverted 4 stroke of the Calypso, Hanno Prettner 1984 plane of the world champion and picture 2 the Orion again.
Hanno did use the 2 stroke but he did also give this advice for mounting a 4 stroke in the Calypso.
The Calypso is in the picture, se the thread of Berusty: Prettner Calypso Plans...
http://www.rcuniverse.com/forum/m_8133426/tm.htm
When you want to use this design I give you the advice to mount the “head rest” (green) I did design for the Orion to protect the engine in belly landings see picture 2.
Distance between the headrest and the engine 0,5 a 1 mm depending of the flexibility of the engine mounting and the amplitude of the engine vibrations and thrust forces.

BTW I did not see this drawing when redesigning the Orion, but look to the mounting screws of the engine cover! I call this, “This is my cup of tea!!!”, even the washers are there.

Fuel tank? look to the earlier posts!

More to come.

Cees
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Old 08-08-2009 | 05:03 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,

I did show the Alphonse Penaud Diploma awarde by the FAI and received in the past by Hanno Prettner.
http://www.rcuniverse.com/forum/m_81...tm.htm#8997809
Post 71

In the period I do study the history of Ed Kazmirski, now for many years, I soon discovered he wasn’t mentioned in the Hall of Fame of the AMA,
People did try to show me the mentioning in the hall of fame of the VR/CS, a local organization with only 350 members!. Hasn’t to do anything with worldwide respect he deserves.
For me it is important for future to clear the facts of the past, but I think people do not want me understand.
For that I show another example.

In post 502 page 21

http://www.rcuniverse.com/forum/m_79...21/key_/tm.htm

I already did show the results of the Brothers Metkemeijer, Netherlands, and when we look if they are metioned for their results we find this, they were awarded with the,

The Antonov Aeromodelling Diploma
This Diploma was established by the FAI in 1987 and may be awarded annually by the FAI to an aeromodeller of an FAI Member for technical innovations in aeromodelling. This Diploma is donated annually by the NAC of Russia to the FAI. Only one Diploma shall be awarded annually. The Antonov Aeromodelling Diploma may be granted more than once to the same person for different technical innovations made in different years.


Received in 1994 by
A.E.C. (Bert) METKEMEIJER (Netherlands)
R.A. (Rob) METKEMEIJER (Netherlands)

1992,1993 and 1995 not awarded!!!!!

I am not an USA-member so my only action is the reconstruction of the development of Ed Kazmirski’s planes, a personnal action.
Why Ed Kazmirski wasn’t mentioned in the AMA Hall of Fame, will be a question in my schedule and I think I
cannot do anything more. I only try to complete the facts.

It is important for the USA members to get an answer for this question (and maybe they still can do anything with it), just as the acceptance of my project, because the only important part of my project is to show (still a part of) real facts that are forgotten in the USA and that of course is not the situation we read in post 101 of another thread, we all know better than that:
http://www.rcuniverse.com/forum/post...132&toStyle=tm

ORIGINAL: kingaltair

Shortened by TF

It's fortunate for us that Tom was such a ''typical'' engineer. It's a shame Ed Kazmirski didn't do the same thing; we would certainly have a lot more to go on if he had.

Shortened by TF

Duane


Picture Metkemijer engine again.

Cees
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Old 08-11-2009 | 04:00 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents, have brake.

Reconstructing a history is just like stretch the horizon of time, go there and look around.
In my Taurus Construction and Flying Schedule, time after time I have to make more space for all kind of details.
An interesting detail that have to do with the brakes and gear and not related with the Taurus?

I did find messages about a (maybe first?) invention of the steerable nose wheel with brake, moment in history? 8 years before Ed did use this on the first Contest Taurus!

Just to make my schedule complete.

I am busy to complete the video equipment, also wireless, to make recordings of the brake tests.
Nose wheel versus main wheel brake(s).

More to come.

Cees
Old 08-14-2009 | 11:17 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents, we all like pictures but I read in the posts:

“I will post photos of my model in a few days.”
(Berusty, 4/18/2009. Prettner Calypso plans)

“someday i will have finished photos of the fillets”
(dhal22, 7/13/2009, Another BA build}

“Pix later, I promise.”
(Stuntflyr,8/3/2009, Sterling P-63 KC restoration)

“Photos when I can get my hands on the camera.”
(pimmnz, 8/10/2009, Ed Kazmirski’s Taurus)

Be convinced you can make that pictures!
That only takes 1/500 sec and some time to download on RCUniverse.

Not to make the fault you make I did start with a (crate) picture and did make my models that fit in that. It is not the easiest way but nobody did have to wait. (LOL)

Preparing the video equipment (Sony video 8, analog) with video link for the moving pictures in the near future.
Centre line pylon for the Top Flite Taurus, with video transmitter will probably be part of it, but I do not promise anything!!!!!
All for the nose wheel brake test.


Cees
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Old 08-17-2009 | 08:30 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,

Added to the Evangelista Torricelli explanations of the fuel tank.

In the past we did use bleed air carbs, without muffler.
These days we have our four strokes, also some times with the bleed air carburetor. As example the ENYA 60 4 C
I also did see a converted marine engine (OPS) with a carburetor on the backside of the engine.

For all these situations this post.

My advice is, in any case you cannot use muffler pressure , for sure not with a bleed air carb, mount the air inlet of the fuel tank near the air inlet of the carburetor.
As example the reference pressure measuring tube I use on the fuel pressure controllera on my glow engines these days.
(See also picture 4, Post 492 page 20)
The angle of the tube in the same direction as the air intake of the carb.
In the past I did mount the air intake of the fuel tank this way for my "old engine".

Doing this, the dynamic pressure of the airspeed on the carburetor you also have in the fuel tank, compensation is the best we can do, with any little pressure difference we can expect.
BTW, this also is a solution for the pusher engine. In that case we have probably a negative dynamic inlet pressure as result of airspeed, on both carburetor venturi and fuel tank.

In worst case situation, with a bad engineered air inlake for the fuel tank, we can have nearly the variations of twice the dynamic pressure of the air speed that influences the fuel flow so the fuel/air ratio of the engine.

More to come and if you have questions, ask!

BTW wood dust on the engine, MVVS, no problem.

Cees
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Old 08-18-2009 | 04:10 AM
  #593  
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

airbusdrvr, Daniel Bernoulli is born in the Netherlands so an advice from "oversea"!

Maybe you read this message!.
I did see you ask the question about dynamic pressure influences on the air intake of your OS FT160 twin.

ORIGINAL: airbusdrvr

I have a question for someone who is knowledgeable of the above titled issues. I have an OS FT-120 twin-cylinder engine. This particular engine has the carb positioned horizontally, facing forward and on my plane is open directly to the airstream through the propeller. Here is a Tower Hobbies picture of the FT-160 engine which is identical with just a bit more displacement, http://www3.towerhobbies.com/cgi-bin...?&I=LXBY68&P=7 . This carb is strictly the venturi type. It has no pressure line from the exhaust to the tank and no pump. It draws fuel simply by some gravity(when the tank is full) and mostly suction(carb venturi). The tank height is centered on the carb intake. Now the question??? When in flight, since the carb is facing forward directly into the airstream, will the mixture go more lean or rich as the airspeed is increased? Or will there be no effect?
http://www.rcuniverse.com/forum/m_90..._1/key_/tm.htm

I did make a principle picture, of course to mount the air intake of the fuel tank on a decent way.
I do use this also for my ENYA 60 4 c for the reference tube of the fuel controller.

I think this is a good principle because when mounting the air inlet of the fuel tank this way, you have the same pressure in the fuel tank.

Often the cilinders are baffled and then you can have (a part of?) the dynamic pressure of plane's air speed in the engine room, so also when the venturi isn't in flight direction you can have dynamic pressure on the carb! As for my Orion !
I use a diffuser for my Orion and expect some more than the dynamic pressure of speed near the carburetor on the back side of the engine but did not yet measure that.


Dutch proverbe;
Baat het niet, het schaadt ook niet!
(If it does not benefit, it doesn't harm neither!)

Cees
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Old 08-18-2009 | 02:46 PM
  #594  
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,

The Oldest Taurus on Earth was the discovery of a plane that was forgotten in the past.

Are there more examples of that? Yes, a nearly same story, read!

My Orion does fly with the “very” old ENYA 60 4 C, Maybe 30 years old, but, it’s now a very reliable engine.
I bought it second hand in very bad condition, for “no money”.(Cheap!)
The gas plant is a bleed air carburetor with a simple fuel metering system and this were results of a study!

ONE

The internal diameter of the air duct in the barrel of the carburetor is 5,5 mm and the bore of the air duct in the carburetor housing is 7 mm? (See picture 1)
When changing diameters in an air duct the problem is, friction factor, so drag.
The ratio of surfaces is: 5,5 x 5,5 / 7 x 7 = 0,62!!
When you do it twice, contraction and expansion ? Indeed, double of all the drag.
Picture 2, after making a nice throat in the barrel, the result is a better airflow, a lower resistance and still the same sucking pressure.
Also the recovery of the low pressure after the carburetor will be much better, so results in more inlet pressure of the engine.

TWO

Such a fat piece of metal tube in the centre of the duct they call a nozzle?
Turbulence and drag is the result again, see the compare picture 2.
I did remove all the “too much” material of the nozzle in the throat and give it a better shape, so less resistance and still the same sucking pressure!.

THREE

The carburetor of the Enya 60 4 C does have a, not adjustable, fuel metering system. A sleeve in the outside of the barrel to restrict the fuel flow depending of the position of the throttle. (see picture 4)

But:

What about when they did use the 2 stroke carburetor? The 2 stroke carburetor with a smaller bore in the barrel? A carburetor for a exhaust pressurized fuel tank in the past? To reduce engineering costs?

I think they did, so after many years of operating for another owner, I did change the carburetor.

I did make a direct fuel connection on the barrel that rotate with the barrel, the flexible fuel line will fix the movement. See picture 3
Result! No unknown fuel flows in the carburetor on other places than through the nozzle!! No metering anymore because we have fuel pressure control! No more unknown restrictions. Better constant ratio of fuel and air over the power range.

The story.

I did exactly the same with the, on that moment about 25 years old, carburetor of the Old Enya 4 stroke as is done with the Oldest Taurus on Earth, the first contest Taurus by Ed Kazmirski. Change many things!!
As many of us know, Ed was an inventor and did change any product he did have, so also the First Contest Taurus.
Only when you know the process you recognize the Oldest Taurus on Earth on the crate picture as I always recognize the original metering barrel of a ENYA 60 4 C.

Because I also do have an original new engine and the “modified” old one, I can put both situations on the pictures without photo shopping!!!

The results for the engine?.

This engine runs without any problem full range, reliable throttle without on board glow plug battery.
It starts with one flip of the propeller without any dead stick, nor “backfire”.
The engine is very powerful because of the better breathing, probably also because of the diffuser cooling!!

Our hobby, always something to discover and “Baat het niet , het schaadt ook niet!” (Again the Dutch proverb)

Ed Kazmirski did the same with his first contest Taurus as I did with my first four stroke engine, make it better any time!

More to come!

Cees
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Old 08-19-2009 | 04:44 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents, for who is interested, the Simla, big son of the Oldest Taurus on Earth.

To redesign I often use solver calculations I can program in my Hewlett Packard calculator.

When I have too much input variables to calculate or, if I want to archive the calculations, I make these calculations in Excel.

A typical example to use solver calculations is to redesign the Simla, all data packed in a lot of valuable pictures and plans.
Only when use all the important data in one calculation model it is possible to recalculate the dimensions with accuracy.
Making the program that can do the job is the first challenge and a separate project,
Making a “model” that can do all the different calculations for that is a kind of reversed computed added design. (RCAD?)

It’s all classic pattern flying, so my hobby, and for that I did start.

First results: dimension sketches and some detailed construction plans.
Because making the top of the fuselage is time consuming I already start with making the plug, see picture 1.
To see results, picture 2, the Oldest Taurus on Earth, study picture with a “photo shopped” side mounted engine, enlarged canopy and Simla painting scheme on the fuse. Just a picture.

Don’t forget, the Simla isn’t on the top of the list, first priority, only to have a (nose wheel?) brake some times and to learn.
And when will the Simla project will be finished?
Only when I see the compare pictures and I am content just as with the crate picture and the Oldest Taurus on Earth because telling all this interesting stuff is no prove!!
Or is it?

Cees
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Old 08-20-2009 | 03:59 PM
  #596  
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,
I did make two more pictures of the carburetor of the ENYA 4 C to archive
The (modern?) four strokes become popular in classic pattern flying and we want POWER.

Picture 1, basic situation
Picture 2, new situation
Maybe I will do some measurements on the engine with standard and modified carburetor in the future.

Interesting more power by removing material!!!!

More to come, power!!!!
Cees
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Old 08-23-2009 | 04:55 AM
  #597  
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents, the carb of the ENYA has one o-ring, seeing that ring(k) I have to think.

IMPORTANT POST ABOUT OOOOOOOOOO-rings

I read a lot of troubles about pneumatic systems in our planes.
Spring air is often used but leakage is sometimes a problem.

In my Orion I use a own designed system all plumbed together with brass tube and fixed restrictions.
The whole system is in the centre section and the air tank in the wing.

To have optimum result of the little air capacity I did make the volume of the “switched” part of the system as small as possible, so short distances and small air line between the pneumatic switch and the single cylinder for the both legs.

MOST IMPORTANT!!!! And that is what I want to show, see picture 2, because I think most people don’t know.

Do not use sharp tools to remove o-rings from the pistons!!!!

Force the ring in one direction I the groove between thump and finger and try to remove the ring with a piece of nylon, plastic. Use for that softer material than the material of the piston.

When people try to close 0-ring with plumber tape (I did read about that!) than they probably have a scratch in the piston groove near yellow dot 2 in the black circle.
When there are scratches they can be polished on a lathe!!

BTW, My system has 3 o-rings and works with 3 bar, 45 PSI and an air tank of about 100/120 CCM for 6 times retracting the both wheels.
The Oldest Taurus on Earth and Orion is from a period the fixed gear was normally used, but, you can never know what we all discover in the future in our own systems.

Cees
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Old 08-27-2009 | 05:32 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents

Today I did make some pictures from angles I did not have already, to recognize (and to compare with) other pictures in the future.

For me it’s for my photographic memory training and doing it this way I did find already a lot of details in the past, details, dimensions, name characters etc.

I do want to make the pictures again with better weather, more sunlight for the color scheme and the shadow (3D!).
I already do want to show one of these pictures, I have dozens of them.

Cees
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Old 08-29-2009 | 05:04 PM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

ORIGINAL: Taurus Flyer

Gents

I do want to make the pictures again with better weather, more sunlight for the color scheme and the shadow (3D!).

Cees
Gents
Better pictures I need for some measurements.(In detail, can I see a part of the left side main wheel with this point of view, with the dihedral of the Top Flite Taurus?)
To see the detail, I reflect some sunlight with a mirror under the planes.

Cees
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Old 08-31-2009 | 11:08 AM
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Default RE: Redesign and reconstruction of the Oldest Taurus on Earth

Gents,

For who is interested “scale models”
To compare outside dimensions of width of the fuselage and the wing saddle with existing pictures I use this method to show them of the replica of Ed’s Contest Taurus (OTOE).
I also use tape with dashes , distances in “inches”, on this picture for example on the tail.(see the little square picture 1)
I can measure the distances and values on my screen to calculate after enlarging and combining parts of pictures.
The position of the camera is noted with the picture to archive.
Of course nothing is gone happen without Hanna of department “quality control” to check the activities.

Picture 3 , of course still a most important picture.
Next post probably some measurements to combine with the "Les Fruh".

More to come
Cees
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