Wow,

thanks you all you guys!!!

Ok the pedals are actually shimano (brrrr, I know) and quit new.
Yes there is this little ring around the screw which fixes the hangar
to
the frame.
The ring is about 7mm wide. It had this thing sticking out at one side
which
held the hanger in place. The ring had little teeth at one side and
could be positioned in three different positions for different chain
lengths.
It is the only thing which is broken.
It very small, very simple....but still difficult to get.
I will now dig through the catalogs you sent me.

Thanks again!

Max


wrote:
I bought this beautiful oldtimer bianchi road bike about a year ago.
It has written the name Record 920 on the frame.
I liked it so much, I took it from Germany to the US when I went there
to write my thesis.
On the way back Delta damaged the gear group in the back.

Before I can start looking for the replacement part I'd need to know
what type/year the campagnolo group is.

Pictures are posted he


http://www.physik.tu-berlin.de/~mxhf...WWW/index.html


I guess it is about 20 years old. There are no catalogs online for such
old parts.
Does anybody know, or know where to start looking, or know where to get
parts even?

I tried shops, I tried Bianchi, I tried ebay.... i think I tried the
obvious things.


Max