I am thinking of trying 180mm cranks as an experiment

Please - I don't want to hear debate on the benefits or not of 180s, I want to try them for myself.

However

Who actually makes 180mm cranks?
In the past it was only the top spec cranks. I can think of Dura Ace, and Record, and lightening. But I don't know of any others.
Do the new campy/fulcrum cranks come in 180mm?

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http://www.blingmybike.com.au - Shiny light weight bike parts

SRAM Rival
http://www.ebay.com/sch/i.html?_nkw=SRA ... mm&_sop=15

As you say, with Campy it's Record UT only in standard chainrings. I have a set.

_________________
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

I'd go for the cheapest set I could find if it's just an experiment, like SRAM Apex (£80 ebay UK)
I think Campy's new OT cranks only go to 175, DA9000 have a wide range of ring sizes in 180 though.

Do Fulcrum also do 180mm cranks? Checked thier website but can't see any reference to what lengths they offer

_________________
http://www.blingmybike.com.au - Shiny light weight bike parts

Forget Fulcrum. You won't get a better deal on Record than this

http://www.velomine.com/index.php?main_page=product_info&cPath=86_294_383_384&products_id=1335

and BTW, it's a little secret, but 10-speed cranks work fine on 11-speed drivetrains.

_________________
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

Fulcrum are only in 170, 172.5 and 175. You can see this in the spares catalogue.