Tange High Tensile Butted Tubing?

09-01-2003, 06:28 PM

The 56cm Sekai 2400 road bike that I found in a dumpster a few weeks ago has
this printed on its seat tube decal:

Tange High Tensile Butted Tubing

Never heard of such a thing. Why bother butting high-ten steel?

IIRC, the Sekai 2400 was a pretty decent Japanese-made bike in the mid-80's.
It has Suzue/Sekai hubs, welded-and-ground 27" (630 mm) Araya rims, Sugino
Super Maxy cranks (cold-forged?). Too bad about the frame - it's pretty
scratched up, but no metal damage. Looks straight. Needs paint. It has
forged dropouts, nice lugwork, flat-crowned fork, normal reach brakes,
plenty of fender clearance, and other nice features. I was going to build a
commuter out of it. Not sure how much energy I want to expend on a high-ten
frame though. Hmm.

Comments, ideas or opinions?

Barry

09-01-2003, 08:21 PM

Mon, 1 Sep 2003 21:28:34 -0500,
<bj0v8j$rhk$[Only registered and activated users can see links. ]>, "B. Sanders"
<[Only registered and activated users can see links. ]> wrote:

>Never heard of such a thing. Why bother butting high-ten steel?

Same reason for butting any other tubing. To put more material where
it's needed.
--
zk

09-02-2003, 06:23 AM

"B. Sanders" <[Only registered and activated users can see links. ]> wrote in message news:<bj0v8j$rhk$[Only registered and activated users can see links. ]>...
> The 56cm Sekai 2400 road bike that I found in a dumpster a few weeks ago has
> this printed on its seat tube decal:
>
> Tange High Tensile Butted Tubing
....
> IIRC, the Sekai 2400 was a pretty decent Japanese-made bike in the mid-80's.
.... I was going to build a
> commuter out of it. Not sure how much energy I want to expend on a high-ten
> frame though. Hmm.
>
> Comments, ideas or opinions?

I built up a Sekai 2400 frame as a commuter bike for my wife.
Although I don't
have any information on the Tange tubing, in my opinion this frame is
well
suited for commuting. Fender clearance is ample. My wife's bike still
has
the original centerpull brakes which work fine with Kool Stop salmon
shoes. I put on SKS fenders, 27 X 1 1/8" continental tires, a Schmidt
SON generator hub & Lumotec headlamp. I spread the rear stays and
installed indexed Sun Race 7 speed derailler & shifter, and Sachs
freewheel. Handlebars are upright north road style.

It's a great frame for a commuter bike!

Bill Putnam

09-02-2003, 12:50 PM

x-no-archive:yes

> For years I've been looking for a good old cr-mo touring frame in my size
> (for cheap). I thought for sure they'd start to materialize; but nobody
> seems to be getting rid of them. I'm pretty sure I know why.
>
> Barry

I have one--it's a Schwinn Voyageur SP touring bike I bought in 1984. It's
a 23" bike that I rode for years without neck or back problems even if I
had to tilt it sideways to get off of it when I stopped. Then, I decide to
buy a new road bike and was fitted on a 55 cm bike. The new one fits me
perfectly, but I am still puzzled as to why the old one also fit so well.
And, no, I can't get rid of it. It's like a member of the family...those
lugs are beautiful.

Pat in TX

09-02-2003, 04:50 PM

"B. Sanders" <[Only registered and activated users can see links. ]> wrote in message
news:bj0v8j$rhk$[Only registered and activated users can see links. ]...
> The 56cm Sekai 2400 road bike that I found in a dumpster a few weeks ago
has
> this printed on its seat tube decal:
>
> Tange High Tensile Butted Tubing
>
> Never heard of such a thing. Why bother butting high-ten steel?
>
> IIRC, the Sekai 2400 was a pretty decent Japanese-made bike in the
mid-80's.
> It has Suzue/Sekai hubs, welded-and-ground 27" (630 mm) Araya rims, Sugino
> Super Maxy cranks (cold-forged?). Too bad about the frame - it's pretty
> scratched up, but no metal damage. Looks straight. Needs paint. It has
> forged dropouts, nice lugwork, flat-crowned fork, normal reach brakes,
> plenty of fender clearance, and other nice features. I was going to build
a
> commuter out of it. Not sure how much energy I want to expend on a
high-ten
> frame though. Hmm.
>
> Comments, ideas or opinions?

I was very much involved with that bike at the time and Tange's butted HiTen
was a reasonable tube in the targeted price range ($269). It's clean and can
be brazed without much regard to upper temperature limit, i.e., quickly.
The Yamaguchi-built frames are straight and solid albeit lacking in metal
prep ( the paint frequently peeled in sheets in the first two years of that
bike, especially in the light blue color).

We also used the butted HiTen tube in bikes all the way down to $200. It
was very affordable. Sekai 2400 with forged horizontal ends make a nice
urban single speed as there is a lot of mudguard clearance. A 1975 with
verticals of course is more limited.

And 56cm? On centers maybe? Theoretically it was made in 18, 19, 21, 23,
25 and 27 inches to top (no ladies' in that model)

SuperMaxy cranks are not cold forged. They do take an easy-to-find 110mm
chainring though.
--
Andrew Muzi
[Only registered and activated users can see links. ]
Open every day since 1 April, 1971

09-03-2003, 07:37 PM

<< The 56cm Sekai 2400 road bike that I found in a dumpster a few weeks ago
..... >>

this thread has inspired the hell out of me. I was just thinking how cool it
would be to find a decent old frame and build it up for a winter utility bike
when it hit me with a flash. I went to the kitchen and pulled my old Trek
frame, c. 1984, out from behind the refrigerator. Totally forgot about it.
Sport/touring model, Ishiwata 022 tubing double butted throughout, too bad it's
not the 531. I am the original owner of this bike. I have been cleaning it for
the past 15 minutes. Now it's shining like the star it will soon be again.

Thanks for reminding me.

Robert

09-04-2003, 09:28 PM

"R15757" <[Only registered and activated users can see links. ]> wrote in message
news:[Only registered and activated users can see links. ].com...
> << The 56cm Sekai 2400 road bike that I found in a dumpster a few weeks
ago
> .... >>
>
> this thread has inspired the hell out of me. I was just thinking how cool
it
> would be to find a decent old frame and build it up for a winter utility
bike
> when it hit me with a flash. I went to the kitchen and pulled my old Trek
> frame, c. 1984, out from behind the refrigerator. Totally forgot about it.
> Sport/touring model, Ishiwata 022 tubing double butted throughout, too bad
it's
> not the 531. I am the original owner of this bike. I have been cleaning it
for
> the past 15 minutes. Now it's shining like the star it will soon be again.
>
> Thanks for reminding me.

You made my week, Robert.

You're going to feel a lot of pride when you restore your trusty steed to
active duty again. She's been waiting patiently for this day. Soon she'll
be carrying you safely, silently and speedily, to there and back again, only
asking for some oil, or a few turns of a wrench every once in a while. Your
bike offers you an ever-changing panoramic view of the world, and keeps you
healthy and fit at the same time. How could any friend do more, or ask for
less?

That's why we're all sitting here around the flickering light of the global
campfire, swapping stories. We want to inspire each other.

Miles of Smiles,

Barry

09-12-2003, 10:02 PM

Robert,
I have troubling news, storing a bicycle behind an electrical appliance is
one of several key symptoms of bicycle obsession and rediculous part
stockpiling syndrome (BORPS syndrome). Other symptoms include, but are not
exclusive to:
-use of used spokes as kitchen utensils
-use of any bicycle part as a paperweight and/or paper towel holder
-ownership of more than one set of 27" wheels
-ownership of any quantity of wheels that are neither 12.5", 16", 20", 24",
26", 650c, nor 700c. (ie. 28" or 60")
-ownership of a bicycle made from two or more other bicycle frames that are
welded together
BORPS is a serious medical condidtion and I strongly suggest that you see
either a doctor or a veteraniarian depending on your species.
Good luck with your troubling illness,
Alfred

09-13-2003, 12:22 AM

<< bicycle obsession and rediculous part
stockpiling syndrome (BORPS syndrome). Other symptoms include, but are not
exclusive to:
-use of used spokes as kitchen utensils>>

check.

<<-use of any bicycle part as a paperweight and/or paper towel holder>>

uh oh.

<<-ownership of more than one set of 27" wheels>>

holy crap man!

<<-ownership of any quantity of wheels that are neither 12.5", 16", 20", 24",
26", 650c, nor 700c. (ie. 28" or 60")
-ownership of a bicycle made from two or more other bicycle frames that are
welded together
BORPS is a serious medical condidtion and I strongly suggest that you see
either a doctor or a veteraniarian depending on your species.
Good luck with your troubling illness,
Alfred
>>

I have 3 out of 5 of those troubling symptoms, plus I got the whole mountain of
old wheels thing going in the kitchen. My name is Robert and I got BORPS.

Robert
I got dem BORPS