Fixing Campagnola Record Derailer

mistermatthew

Hi, I recently bought my first road bike, a second hand Bianchi EV2 with full campag record groupset. Its all running sweet. However one of the limit screws is stripped on the rear derailer.

Any advice on how to fix it?

coastwatch

I'm no expert, but is the thread worn on the screw or the derailleur body?
If it's the screw, then it seems they are standard spares, you could get them though your LBS or ebay
I'd be surprised if they weren't standard screws eg M4 that could be bought for a lot less in a hardware shop, just bring the old one for size.

If its the threads on the derailleur body, then you're ....a-hem.. screwed.
Ebay for a used derailleur would be the best bet.

Cee-Jay-Cee

Remove the derailleur, drill out the old screw and re-tap the hole and fit a new screw. It might be advisable to go a size bigger to ensure a clean thread for the new screw.

Rovi

Even very small damaged threads can be fixed:
http://www.timesert.com/html/mtrcsert.html

Don't go scrapping an otherwise good (and expensive!!!) component because of a simple stripped thread.

mistermatthew

Hey,
Sorry i might of muddled up the original post. It is the head of the screw that is stripped. Ie. No screwdriver can grip in it. Is drilling it out the only option then? Would a drop of solder or anything allow me to put a new head on the screw?

hardCopy

mistermatthew wrote: »

Hey,
Sorry i might of muddled up the original post. It is the head of the screw that is stripped. Ie. No screwdriver can grip in it. Is drilling it out the only option then? Would a drop of solder or anything allow me to put a new head on the screw?

Could you grip it with a needle-nose pliers?

mistermatthew

hardCopy wrote: »

Could you grip it with a needle-nose pliers?

Naa, it is countersunk into the derailer. I suppose its not causing any harm. No adjustment required at the moment.

But I'm just one of those people who would be loving everything to be perfect.

Got a bargain for the bike though, 470 euro with full record and mavic wheels.

Same as this: http://www.automation-drive.com/bianchi-ev2

Cee-Jay-Cee

Get a small HSS drill bit (smaller than the screw size) and drill part of the way in then reverse the drill and put pressure on the drill and in a lot of cases the reverse action should remove the screw. It means you won't damage the threads in the screw hole. If that doesn't work tap a small screw driver into the hole and see if it will come out by screwing it out. It shouldn't be hard to remove.

Chips Lovell

I've had this happen on two different Campag deraileuers, so it's a common problem.

The drill method described above was what worked. Now I make sure to take the limit screws out and grease them to prevent them seizing and causing the head to get stripped if I got to adjust them.

mistermatthew

Ahh right cool. Thanks everyone. Must be common enough problem then. And i'm sure can get the replacement screws handy enough too.

Chips Lovell

Yep. One of the plus points on Campagnolo stuff is that virtually everything can be rebuilt. There's a spare parts catalogue on their site with part numbers for every bit, which are handy for googling retailers.

bcmf

Happened me as well. Drilled out the old screw (as the head was totally fooked) bought a damaged campy rd and used the screw for that. Still may have a screw in the damaged one if you need it.

mistermatthew

bcmf wrote: »

Happened me as well. Drilled out the old screw (as the head was totally fooked) bought a damaged campy rd and used the screw for that. Still may have a screw in the damaged one if you need it.

Hey,
Ah i'll probably not change it for a while. No point sending u to the hassle of looking for the screw and all. Plus i'm all the way up in donegal here.

bcmf

mistermatthew wrote: »

Hey,
Ah i'll probably not change it for a while. No point sending u to the hassle of looking for the screw and all. Plus i'm all the way up in donegal here.

No worries. I found it anyway. Sure the postie doesnt go to Donegal anyway
Anyway I wont be throwing it out so just shout.

mistermatthew

Just was doing some googling. Seem to reckon its a normal stainless steel m3 screw just

Marq-dublin

If it's Record you should be able to grip the screw from behind / inside with a pliers and turn it until you get enough showing to grip it from the right side and twist till out