Re: [CR]Bianchi Sport SS Q

Example: Framebuilders:Rene Herse

Date: Sat, 15 Oct 2005 09:13:37 -0500
From: John Thompson <>
Organization: The Crimson Permanent Assurance
Cc: Classic Rendezvous <>
Subject: Re: [CR]Bianchi Sport SS Q
References: <>
In-Reply-To: <>

Don Wilson wrote:
> This is a Japanese Bianchi with Sylstar cranks, and
> Suntour VGT derailleur, but please don't stop reading.
> :-)
> The tube and fork stickers read: Magny Ishiwata.
> What exactly is Magny Ishiwata? Manganese molybdenum
> alloy by a tube maker named Ishiwata?

> If yes, then how does Ishiwata compare with Tange (a maker whose
> counter intuitive numbering system I am familiar with)
> as a Japanese tube maker? Better, same, or worse than
> Tange?

Ishiwata is well respected and comparable to Tange, Reynolds, Columbus, etc. They made a full range of tubing, from seamed, high-tensile gaspipe to seamless butted alloy Manganese or Cro-Mo:

Their "Alpha" tubing was the lightest steel tubing available for bicycles. The Mangalloy sets were considered mid-level. The "022" set was quite popular and essentially identical to Columbus SL.


-John Thompson (
Appleton WI USA