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-   -   Using Modern Derailleur With Bolt-On Derailleur Hanger Claw? (https://www.bikeforums.net/classic-vintage/802432-using-modern-derailleur-bolt-derailleur-hanger-claw.html)

jyl 03-03-12 11:19 PM

Using Modern Derailleur With Bolt-On Derailleur Hanger Claw?
 
How does one adapt an old bike with this sort of bolt-on derailleur hanger claw (below) to use a Campagnolo-type derailleur with a step for the "B" screw?

http://i800.photobucket.com/albums/y...s/1ff24752.jpg

elboGreaze 03-03-12 11:34 PM

This may be what you need ( if the link works).

http://www.ebay.com/itm/Index-Derail...item256d168a30

Edit: I'm not sure about Campy, but I am using this with a Shimano 105 derailleur.

ColonelJLloyd 03-04-12 08:15 AM

^ +1

Scooper 03-04-12 08:28 AM

This is a Sunrace claw mounted hanger I used on my '73 Super Sport.

http://i32.photobucket.com/albums/d7...IMG5634med.jpg

jyl 03-04-12 11:41 AM

Thank you one and all. My searching skills don't seem to be up to arcane little topics like this. $1.99, I can handle that . . .

jimmuller 03-04-12 01:27 PM

Hmph. I have encountered the opposite problem. An early 70's Bertin with Campy dropouts. The stop on the dropout is so short that a VGT Luxe doesn't even see it. A Cyclone Mk2 touches it but only with the derailleur body, not the stop screw. I may see how a Campy NR fits but I don't want to use it on that bike.

zukahn1 03-04-12 05:30 PM

You can find the correct claw for most Campy RD's online or Ebay it just takes a little looking. I know some of the Suntour claws will work with Campy I just can't remember the the model number it seems there where about a dozen or so models.

RosyRambler 03-04-12 07:15 PM

I have a similar conundrum. I have a mid-'70s Peugeot mixte that came with the cheap Simplex delrin derailleurs and shifters. I am hoping to keep everything as French as possible and change the derailleurs over to Huret models and am searching Ebay at the moment.

In the meantime, I am awaiting a Suntour V-GT Luxe rear derailleur I just won off Ebay and was figuring I'd put that on for the time being because I want a long cage RD. I'm also looking to put a cotterless "compact" crankset on.

However, I was reading Eugene A. Sloane's "Bicycle Maintenance Manual" (1981) (Great book by the way!), and on page 100 he says,

"If you have a French bicycle you may not be able to use anything but a French derailleur, particularly if the dropout is a Simplex, designed for a Simplex derailleur."

So, do I assume the Peugeot has Simplex dropouts because it came with a Simplex rear derailleur? And I can't use anything but Simplex on it?

Or are there ways to get around it like mentioned above?

And how does one tell a Simplex dropout from any other dropout?

To OP....is your bike a Peugeot by any chance?

zukahn1 03-04-12 09:18 PM

I have a Huret Eco RD you can have for shipping cost if interested just PM me.

Captain Blight 03-04-12 10:56 PM


Originally Posted by zukahn1 (Post 13930942)
You can find the correct claw for most Campy RD's online or Ebay it just takes a little looking. I know some of the Suntour claws will work with Campy I just can't remember the the model number it seems there where about a dozen or so models.

#4532, and they came in IIRC three different drop lengths, measured from the axle down to the bolt-hole. The Huret and Suntour branded claws are quite a bit better-made, with decent chrome and a stop that actually works.

RosyRambler 03-04-12 11:08 PM


Originally Posted by zukahn1 (Post 13931845)
I have a Huret Eco RD you can have for shipping cost if interested just PM me.

PM Sent

RosyRambler 03-04-12 11:10 PM


Originally Posted by Captain Blight (Post 13932168)
#4532, and they came in IIRC three different drop lengths, measured from the axle down to the bolt-hole. The Huret and Suntour branded claws are quite a bit better-made, with decent chrome and a stop that actually works.

So, basically all derailleurs would use a different "claw"?

Would that be based on the specific derailleur, or the dropout, or both?

wearyourtruth 03-05-12 07:01 AM


Originally Posted by jyl (Post 13929749)
Thank you one and all. My searching skills don't seem to be up to arcane little topics like this. $1.99, I can handle that . . .

you live in portland. you should be able to throw a rock out your front door and hit 5 bike shops that have one of those for sale or just laying around (they may just GIVE you) without having to resort to eBay and shipping :-P

thenomad 03-05-12 12:41 PM

Took a little grinding to allow clearance for the B screw. Got a shimano 600 on a claw for my son's 20" road bike and it works fine.


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