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Old Jul 20, 2012, 01:17 PM
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Giezendanner Marabu 1972 (most likely year) kit.

Hi,

Here is some info about Bruno Giezendanner Marabu "1967-1969" kit version.
Kit below was made by Giezendanner in 1969 (about), bought directly from Giezendanner at that time and kit is as seen in pictures below.
Price for the kit back then was 2500 Swedish Krona = 353 Swiss francs = US $360 = 294 Euro.
I bought the kit for half that price some time ago at an F3A competition from a person here in my country that bought it directly from Giezendanner back in the days but he never finished it.
A very expensive kit back then but it was an ARF of that time: glass fuselage with built in ply bulkheads and maple engine mount, stab+elevator, fin+rudder, wing+aileron built from light balsa, fixed landing gear already built in the wing, nose gear built in, wingbolts installed, all control surfaces hinged (but not glued) with Klett hinges. Wing, stab, fin and control surfaces covered with silk and doped. Middle of wing reinforced with glass weave. Throttle and nose stearing tubes installed.
What You had to do was cut out for the .60/.61 engine prefered and bolt it in, dope the wing, stab, fin and control surfaces to ready for paint stage, paint fuselage, wing etc. Glue all hinges, mount control horns for rudder and elevator, make control rods, mount radio and tank (round 12 oz). Mount canopy (missing in my kit but according to drawing for Mk III 1971 it is a 9 inch Du-Bro canopy that is used and according to drawing for Mk I 1969 it is Graupner Caravelle type canopy).

Note that on nose ring it is stamped "113" (see image 9 below) so it was kit number 113 produced.
Note also in the center section of wing where servo install it is written "Gizendanner, Schweitz, 67-69" (note misspelled - correct is Giezendanner).

This kit is suppose to be "pre" Marabu Mk III. Marabu Mk III came in 1971 with construction article in Model Airplane News July 1972.
So I would guess the kit is close to the 1969 World Champion version of Marabu?

Some similarities and differences I have observed between the kit compared to Marabu Mk III drawing:

Wingspan:
Kit, Mk I(1969) and Mk III (1971) has 1680 mm / 66.14 inch

Wing root length:
Kit, Mk I and Mk III has 350 mm / 13.78 inch

Wing tip length:
Kit, Mk I and Mk III both 220 mm / 8.66 inch

Wing anahedral (V-shape):
Kit 70 mm / 2.76 inch
Mk I 40 mm / 1.575 inch
Mk III 63 mm / 2.48 inch

Stab span:
Kit 587 mm / 23.11 inch
Mk I 600 mm / 23.62 inch
Mk III 578 / 22.76 inch

Stab root and tip length:
Same on both kit and Mk III

Fin height:
Kit 223 mm / 8.78 inch
Mk I 230 mm / 9.055 inch
Mk III 227 mm / 8.94 inch

Rudder length, top
Kit 67 mm / 2.64 inch
Mk I 57 mm / 2.25 inch
Mk III 55 mm / 2.17 inch

Rudder lenght, base
Kit 115 mm / 4.53 inch
Mk I 97 mm / 3.82 inch
Mk III 100 mm / 3.94 inch

Fuselage total length (nose ring to tail end):
Kit 1250 mm / 49.21 inch
Mk I 1320 mm / 51.97 inch
Mk III 1280 mm / 50.4 inch

Distance nose-wing leading edge:
Kit 205 mm / 8.07 inch
Mk I 255 mm / 10.04 inch
Mk III 220 mm / 8.66 inch

Distance wing trailing edge(and of aileron) at root - tail:
Kit 690 mm / 27.16 inch
Mk I 715 mm / 28.15 inch
Mk III 700 mm / 27.56 inch

Fuselage height at wing leading edge:
Both kit, Mk I and Mk III 140 mm / 5.51 inch

Fuselage height at wing trailing edge:
Both kit, Mk I and Mk III 135 mm / 5.31 inch

Fuselage width at wing section:
Kit 80 mm / 3.15 inch
Mk I 93 mm / 3.66 inch
Mk III 80 mm / 3.15 inch


Distance from main landing gear inner hole to leading wing edge:
Both kit, Mk I and Mk III 175 mm / 6.89 inch

Nose gear position from nose ring:
Kit 110 mm / 4.33 inch
Mk I 130 mm / 5.12 inch
Mk III 125 mm / 4.92 inch


Weight kit:
Total as seen in the picture 1550 gram / 52.4 oz
(Wing 650 gram / 22 oz, fuselage etc 900 gram / 30.4 oz)


I have not decided yet if:
a) I will use the already installed fixed gear or rebuild for retractable gear.
b) I will make the fuselage avaliable for making copies via "frequentflyer" "factory" but then I have to use a Fein multimaster cutting saw and cut loose the stab and fin.

I have decided to use my Webra .61 Blackhead with original Webra silencer.
The wing has to be recovered and I think I will use SIG Koverall since it is reasonably light and very strong. Stab, fin, control surfaces are in great shape and need just some sanding and some dope to be ready for paint (they are already covered by silk).

I will try to find a 9 inch Du-Bro canopy but it will probably be hard to find one today.

Anyway, I hope some of you found it interesting to read about this "kit" of Marabu made by Mr Giezendanner himself back in the pattern hay days.
He won F3A World Championship 1969 and 1971 with Marabu, in slightly different versions.

It is a piece of pattern history and not that many of these kits can probably be found today.

More images in part 2 and 3 below.

/Bo
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Last edited by bossee; Aug 08, 2012 at 03:09 AM.
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Old Jul 20, 2012, 01:20 PM
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Part 2, more pictures of the kit.

Notice in image 7 what is written on the balsa.

/Bo
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Old Jul 20, 2012, 01:21 PM
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Part 3 (of 3).
Wing tip front has rounded corner on kit version, on Mk I and Mk III it is straight.
Nose is shorter on kit version then Mk I and Mk III version.

/Bo
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Old Jul 20, 2012, 04:17 PM
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Hi,

I found another guy that has the glass fuselage version of Marabu, here it is (in Switzerland I think) with many nice photos:

http://translate.google.com/translat...u%2Findex.html

Old Super Tigre 60 replaced with OS 60 FS and old radio replaced with more modern radio.

/Bo
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Old Jul 21, 2012, 10:17 AM
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Hi,

I have studied Marabu 1969 ("Mk I") drawing and building instruction now also and typed in measurments in first post to compare with Mk III and the kit version.

I found out that in building instructions for Mk I (1969) version it is mentioned that Graupner Carevelle canopy can be used and I had such canopy and it fit very good when compare the drawing.
It is also mentioned in Mk I building instruction that Kato (MK) or KDH retracts can be used.

What conclusion that can be drawn regarding the year the Marabu kit was made is difficult. On one hand it is written in the balsa "67-69" in the center section of wing and it has manufacture number 113 stamped in the nose ring. On the other hand if one read the construction article for Marabu Mk III in Model Airplane News July 1972 (see below) it is clearly written there about the shortening of the nose and thined down fuselage and this was done in Mk III (1971) compared to Mk I (1969). But the kit version has even shorter nose (and same fuselage width as Mk III). Maybe the kit is some slight evolution (newer) then Mk III? Who knows?

http://www.algonet.se/~boem/ClassicP...uly_Marabu.pdf


/Bo
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Old Jul 22, 2012, 12:35 PM
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That sure brought back a lot of memories. Thank you.
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Old Jul 22, 2012, 12:49 PM
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SeismicCWave,

Did You have a Marabu in the past? Maybe the above "kit"? Can You tell some about it?
Edit: I found that You had a Marabu kit back in 1972, did You find out who made the kit and was it all balsa kit?
http://www.rcuniverse.com/forum/m_90...tm.htm#9080920

I have now sent e-mail to Giezendanner-Technik and asked if they know when this kit was in production. Maybe they know or can find out.

/Bo
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Old Jul 23, 2012, 02:59 PM
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Quote:
Originally Posted by bossee View Post
SeismicCWave,

Did You have a Marabu in the past? Maybe the above "kit"? Can You tell some about it?
Edit: I found that You had a Marabu kit back in 1972, did You find out who made the kit and was it all balsa kit?
http://www.rcuniverse.com/forum/m_90...tm.htm#9080920

I have now sent e-mail to Giezendanner-Technik and asked if they know when this kit was in production. Maybe they know or can find out.

/Bo
Memory is fading but I believe it was either an MK kit or a Isao Matsui kit. I only remembered I had to chase around all over Tokyo to find a hobby shop to buy the kit. At 17 years old and not speaking Japanese it was an adventure to say the least. It was definitely an all balsa kit. It was in a box that actually fit on the overhead compartment of a commercial airliner.
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Old Jul 28, 2012, 05:22 PM
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SeismicCWave,

I checked some of my old catalogs today and in one of them, a Swedish catalog, from 1975 (and 1977) it was MRM, Marutaka, Marabu 60 (MRM = Marutaka RC Models).
Maybe it was that balsa kit You bought in Tokyo? I believe the MRM Marabu 60 has colorscheme of Giezendanner 1971 version, so it could maybe be that kit You bought?
Image below of the Martutaka Marabu 60 together with one other MRM model and some MK models from that era.

/Bo
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Old Jul 28, 2012, 08:49 PM
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Quote:
Originally Posted by bossee View Post
SeismicCWave,

I checked some of my old catalogs today and in one of them, a Swedish catalog, from 1975 (and 1977) it was MRM, Marutaka, Marabu 60 (MRM = Marutaka RC Models).
Maybe it was that balsa kit You bought in Tokyo? I believe the MRM Marabu 60 has colorscheme of Giezendanner 1971 version, so it could maybe be that kit You bought?
Image below of the Martutaka Marabu 60 together with one other MRM model and some MK models from that era.

/Bo
That makes perfect sense. Marutaka is another one of the great Japanese kit maker. They kit mostly scale planes now. I was really unsure because I didn't think it was MK or Yoshioka. That's why I thought it was Isao Matsui. However Marutaka makes sense. It must have been it.

Thanks for the research. I love those little tid bit of history.
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Old Jul 29, 2012, 11:55 AM
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Hi,

I got some info about my "kit" (glass fuselage and ready made wing+stab etc that this thread is about) from Giezendanner-Technik and they think it is from 1972. They will ask Emil Giezendanner (brother to Bruno Giezendanner) for info also and come back to me.

It make sense to me that it is about 1972 (so Mk III or even some enhancement of that) since the nose is so short (even shorter then MK III) and that was a trend for reasons mentioned in construction article in Model Airplane News July 1972.

I have also found a French model magazine from 1969 where it is an article about Marabu, we will se how much I will understand of the French...

"MODELE REDUIT D'AVION (LE) [No 364] du 01/09/1969 - LE SUISSE BUNO GIEZENDANNER ET SON MODELE MARABU."

/Bo
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Old Aug 07, 2012, 09:48 AM
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Hi Bo,

your thread about the Marabu is very interesting. You have a lot of material about them.
Did you know, that Bruno Giezendanner already flew the Marabu in the world champs of 1967.? With Wingspan of 1820mm and an older Fin shape.

In an old german magazin from April 1968 is an articel that shows the marabu anno 1968.

By the way, I love this model and one day I want to built it.

regards
Joshua
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Old Aug 07, 2012, 12:35 PM
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Hi Joshua,

Yes I had information that Bruno Giezendanner used a Marabu also in 1967 World Championship (I do not know what place he got at that WC).
I did not know it was a drawing available for it and that it had larger wingspan etc then the MK I and MK III versions.

I have a table from one model magazine where I could see info about Marabu 1967 - what engine, prop, radio etc Bruno Giezendanner used at 1967 World Championchip - see image below.

I have also found out that Marabu is an evolution of an earlier model "Pelikan 64" that Bruno Giezendanner was Swiss national champion with in 1965 (and maybe was competing also in WC 1965 with this model?).
See image of Pelikan below.
Info and images of Pelikan 64 also:

http://www.leodolter.ch/index.php?op...d=31&Itemid=36

Same link but with Google translated to English:
http://translate.google.se/translate...d%3D36&act=url


There is also a "Marabu Trainer" (high wing trainer).
See image below.
Drawing is avaliable here:

http://www.paulstamm.eu/deutschland/...p?d_106452.php


I have some info about Marabu ARF (1969 and 1971 versions) - they are delayed. It was said they should be delivered in July but we have to wait little longer (I have ordered since long time back). I got en e-mail from Giezendanner-Technik about that.

/Bo
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Old Aug 07, 2012, 05:46 PM
RFJ
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Quote:
(I do not know what place he got at that WC)
He placed 8th at the 1967 WCs.

A few more details about the Pelican.

Ray
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Old Aug 08, 2012, 02:47 AM
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Hi,

Emil Giezendanner has looked at the "kit" now and answered this:

"The kit can not possibly be 69 to 67. At that time there was no polyester fuselages. The first came around 1972. Unless someone had a body shaped earlier then this. Only the number [113] makes me a little suspicious."

I changed the Subject for this thread slightly now also to "Giezendanner Marabu 1972 (most likely year) kit."

/Bo
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