Koga miyata CBL restaurieren oder neu aufbauen

[Cpt.Tuttle]

Hallo,

also ich habe das Problem das ich ein Koga-miyata SkyRunner CBL habe und nicht weiß was ich genau machen soll.

Erstmal das Bike:

Parts:
Gabel: RS Mag 21 FS Carbon 1"
Komplette Gruppe: XT (incl. U-Brake und Biopace )
Fahrleistung des Bikes ca. 200-300km (nur halt gammelig)


Original waren noch diese Parts verbaut:

Plus Weißwandreifen und eine Carbon- oder Alugabel (welche ich leider nichtmehr habe)


SO ,,also was soll ich machen?
Die Teile restaurieren und wieder im Originalzustand fahren oder den Rahmen mit neuen Teilen aufbauen? Lohnt sich das ganze mit dem Rahmen? In einem anderen Thread habe ich gelesen das es sich um einen bei Giant gebauten Rahmen handelt. Ich bin für jede Info dankbar.

Ich dachte daran möglichst viel Carbon zu nutzen und als Bremse eine umgedrehte Magura da ich sonst keine Bremse für die U-Brake-Sockel wüßte.
Als Gabel wünsche ich mir eine Proflex Carbon. Dann sollte alles in Carbon / Gold erstrahlen.

Eines muß ich noch sagen, steif ist der Rahmen ohne ende, da ist das M800 von nem Kumpel butterweich gegen.

 

[Elevation12,000]

Hi,

I am happy to provide help, but I hope you don't mind I go in English.

Your bike is the 1990 Koga Miyata SkyRunner Carbolite. The original forks is a Tange Switchblades and the frame is not made with Giant, but with Miyata in Japan.

I personally wouldn't go for using new parts, but opting for original specs instead ...or at least using decent period correct parts. The original equipment offers great function and durability and can be sourced easily. Maybe you should opt for a longer post, as it looks like that with the current the durability is pushed to the limits. Too much outside, too less inside the frame me thinks.

Review =>

1990 Koga Miyata SkyRunner Carbolite, Sportrad 3-90

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Catalogue pic 1990 SkyRunner =>

Catalogue pic 1991 SkyRunner =>

The 1991 model frame differs in that it has 1-1/8 headtube, 73mm brackethousing, toptube cablerouting, shaved down bracket lug, more svelte dropouts and tapered stays.

1990 Miyata Century =>

Like your SkyRunner, but with goldplating on the lugs. Issued to celebrate 100yrs Miyata bike building.

Miyata history (from somewhere on the web) =>

Tokyo in 1889 had barley seen a bicycle before- and here was an American pushing a broken one through the Ginza, crowded as always with messengers, carts, rickshaws, peddlers, and water carriers. As the bicycle passed a small factory, the owner, Eisuke Miyata, stepped into the street. The American stopped. Could they…?

One year later, the Miyata Rifle Factory's reputation for repairing foreign bicycles had created a "sideline" big enough to require a move into larger quarters, where Mr. Miyata proceeded to design and produce Japan's first bicycle. The new company's commitment to the future led to remarkable breakthroughs in bicycle manufacturing. This also led to pioneering development and production of automobiles and motorcycles in Japan.

The pursuit of excellence has distinguished the Miyata Bicycle Company throughout its history. From the 1890's solid-tire bicycle created for the Crown Prince of Japan, through the bonded titanium bicycles created for the champions of the 1990's, the Miyata mission has been a singular one: To dedicate Human resources to the perfection of bicycles that serve the human rider.

Today, one hundred and eight years after the first bicycle was wheeled out of the rifle factory door, the Miyata reputation is one of Japan's most distinguished exports. It is especially fitting that Americans, who lead Eisuke Miyata to his dream, are the beneficiaries of bicycles that match his vision.
Currently Miyata still produces bicycles in Japan, but not for distribution in the United States. It is unknown when they will be available in the United Stated. To see more of what is produced in Japan from the Miyata Factory, see their web site at http://web.archive.org/web/199812021....gear-m.co.jp/.
Also check out the web site for Koga Miyata of the Netherlands at http://web.archive.org/web/199812021...ish/index.html

Available in the United States are Miyata Unicycles and Koga Miyata frame sets: mountain, touring and road. For more information about the unicycles and frame sets, please click on the appropriate likes below. Miyata has pioneered several frame-building techniques and has created a world-renowned product. To find out more about theses techniques, click on the links below.

Some of these processes include:
Spline Triple Butted Chromoly Steel
APA - Aluminum Pressurized-Adhesive Bonding for Aluminum Frames
Carbon Tech - Carbon Fiber Frame Construction

 

[Zauberer33]

WAS EIN FEINES RAD....... ,

ich kann mich noch entsinnen, wie ich 1990 mit 18Jahren den Koga Katalog verschlungen habe und genau dieses Rad unbedingt haben wollte........ !!! Lange ist´s her.........

Also das würde ich ja sofort zu meinem 88´Trimble und 89`RM Blizzard dazu gesellen.
Aber 14Kg ist schon ein ganz schöner Brocken....Du meine Güte.....


Auf jedenfall restaurieren und bloß keine neuen Teile dranmachen........

 

[Cpt.Tuttle]

First, thx you're GREAT.

I searched for this informations a long time.

The post is below the Limitmark, but maybe yor're right and I'll change it.

Interesting is, the RS Fork is mounted with the Tange Bridge, not with the RS one.

BUT , it's strange, the your pic of the '90 Miyata shows a Canti ,too. Or is it wrong? My one has a U-Brake instead of.

The Guy that bought it, paid 6600 DM for it, but with the RS Fork, because it was to stiff for him.
Until you post, I thought the Deal was the Handelbar-cutter, it's VERY short

Now, im thinking of what to do with the Bike, maybe tune it with some Retro Parts, best I look what was awalible in these Times. It's very nervously ride it fast than 30km/h, I think cause the short handelbar.

/////////////////

Ja 14 Kilo sind nicht leicht, ich würde sogar sagen mein San Andreas ist leichter aber solange man nicht zu schnell wird, fliegt man die Berge echt hoch, kann mir das nur durch die Steifigkeit erklären oder durch die vom Prinzip genialen Biopace Kettenblätter.

 

[Elevation12,000]

I think the mark at the XT post is already at 7 or 8 cms. I don't like that, I want at least 10cms inside.

The pics are pretty unclear, but your forks look VERY much like Specialized Futureshock with carbon lowers to me.

The bike in the review has a larger frame (52cm or 20,5"). Smaller sizes often came with the U-brake.

The standard Syncros handlebar originally had a width of 585mm.

My bike (the gold one) with the Switchblades and wider bar I would not describe as nervous.

Here you find a timeline of components that could be helpfull when you want to go fully period correct. I can already unveil the Proflex carbon forks came way later

 

[Cpt.Tuttle]

I'll check the Seatost

You're right it's labelt with "Specialized FS Carbon" the Dealer told that it's an old Mag 21 with Carbon lowers build by RS

Ok, the Framesize may be the reason for the U, it's small indeed.

I'll check the Bar too,, but it looks like cuttingwork

Hmm, yes the first Grivin was an alu one ,, and 1 1/8 I think


Now, I think of build it up for road, with Original Parts, maybe a Syncros post and stem, but with Ritchey Sliks,,, maybe ,,, or should I better sell it ? I've got one Classic Bike already and it's my main Bike for my area.