Robvolz 

I'm not talking about simply take apart to clean, lube, etc, but those (not) rivets that hold the parallelogram to the top and bottom knuckles.

I can't remember the proper temm for them, but they are pounded in and expanded at the ends. Tools and parts I don't possess.

Anyone?

Thanks

(Robert, owner of enough barber shop parts to make a new RD, but custom.)

oneclick 

Rivets.

Campagnolo used various types, spares are sometimes available, I made my own.

Why do you want it apart?

(I did it to marry the top of one mech and the bottom of another.)

Robvolz 

one click said: (I did it to marry the top of one mech and the bottom of another.)

Exactly that

SJX426 

I believe Rooboy (RIP) made the tools, IIRC. @Drillium Dude might know who has some.

Robvolz 

I honestly don’t want to have to buy tools or borrow tools. I’d rather simply pay someone to do this.

I have way too many projects already. Sometimes it’s OK to hire an expert.

bulgie 

Jim Merz is good at this. I have done it without any specialized tools, but Jim has the right punches to peen the ends to look like factory. He even put a Rally top knuckle on a NR for me, and a Sport top knuckle on a steel GS, and a Sport top knuckle on a Record.






In that 3rd pic it looks strained but it actually still runs quiet. That and the 4th pic are to show it hits all 15 gears (including big-big and small-small), with a 20-tooth spread in front (a triple). Something you could never do with the Record, without the sprung upper pivot off the Sport mech.

Despite this being unspeakably cool (if you're a nerd like me), I don't recommend it. It's kind of a PITA to install, and most any touring derailer will shift better for much less $$$. You have to really want it for this be worth pursuing.

Mark B

oneclick 

I did mine a little differently, GS bottom knuckle to a Sport top end.

Here are two pics that show the rivets; the flat ends are as turned, the peened ends I did with a hammer and flat punch:

Robvolz 

I know that Jim has done a few for you. It came up in a past conversation.

But, I already have him adding "Mexican" slots to my campy cranks. I don't want to stack or overwhelm him.

I plan on doing what you've done with my 1st gen rally derailleur. I believe that the way the hanging upper knuckle hangs, it might give me the tension I need for a triple crank as long as I don't get too extreme on the freewheel.

Robert