Dura Ace
 

I have a DA RD 7401 , it has a stripped cable mount stud . It's holding ok (I can't believe it) I would like to get a new one . Anyone know where I can get one ? Thanks .

Doesn't this der use a bolt that's removable? Most all the Shimano rear ders do. On the first few generations of rear ders there was a lot of part interchangeability between grades, often with the finish being the difference. Andy.

Hi Andy , yes it is basically a nut and bolt . It's kind of hard to describe but I'll give it a shot . The nut is a Allen head that has been drilled out and threaded , the bolt is threaded stud then goes into a bigger diameter and has to flats milled on it and last is a flat head that the cable slips under . I checked it to my Shimano 600 SIS DR it's different in the respect that the DA's Allen head is on the inside of the DR . The 600's Allen head is on the outside and I think the part that it screws into seems to be a fixed block not just a nut . There are two vintage shops in my area that might have something or it wouldn't' be impossible to make something .

[MENTION=413981]markwesti[/MENTION]

as Andy noted, there is quite a bit of (especially small part) part interchangeability between Shimano parts. I can't be 100% certain without you posting a picture, but it sounds like you are describing a threaded post in the derailleur body, secured by two flats. If so, rejoice; this is still a common design on low-end Shimano parts. You may be able to find an STX derailleur for cheap, for instance, that may have a piece that will fit. A bike cooperative, with a large parts graveyard, would be invaluable here. The fact that it is secured by an external hex nut notwithstanding, it should work fine, with the use of a nut driver.

By the way, is this the model you are referring to?

http://velobase.com/CompImages/RDera...435EF464A.jpeg

visit your local Bike co-op... dig around.

Yes [MENTION=46889]wsc[/MENTION]hurba that's the one , nice pic by the way . Like I said it isn't anything like the 600 SIS . Now is the time to start scrounging , while the old one is holding on by a thread . ( pun intended )

I have a RD-7400 and a RD-7402. If the 7401 uses the same stud then this should work for you.

I pulled out the 7402 stud and took a look at it and thought... that sure looks familiar to me. I have seen that stud somewhere before. Dug out an old Dia Compe side pull caliper and took out the cable stud, dropped it into the 7402, put on the DA washer and nut and everything went together like they were made for each other. The Dia Compe brake was a generic 400.

Hope this helps!

John

Was it something like this? I remember the RD-7401 design and I think it might drop in. It might need some careful filing to work correctly though.

Dia-Compe Cable Anchor Bolt (Bag of 10) - Harris Cyclery bicycle shop - West Newton, Massachusetts

http://harriscyclery.net/images/libr...odl/BR2044.jpg

It looks like that except the acorn nut was a little more pointed. Mine would not fit into the 7400, but it dropped into the 7402. The DA 5mm hex nut threaded on perfectly. If the Harris anchor bolts needed a bit of filing, it wouldn't take much. Plus you get a bit of drillium... lol!

John

These are a bog-standard item at any bike shop. Back in my shop days we had boxes and boxes. (They were also a bit fragile- ask my how I know.) The Dura-Ace item may be prettier, but the Dia-Compe should work just fine.

[MENTION=400449]70sSanO[/MENTION] and [MENTION=78263]Jeff[/MENTION] Willis . That would work , thanks . I was wondering why Shimano didn't drill a hole for the cable . Jeff how do you know ?

I spent 12 years in the bicycle business and I spent an inordinate amount of time wondering if part "A" fits on assembly "B".

If it doesn't work, let us know.