Re: [CR]shipping woes / NOW Campy NR/SR RD rebuild


Example: Racing:Jean Robic

In-Reply-To: <8C9F292F8AFDC20-524-B24D@webmail-dd04.sysops.aol.com>
From: "R.S. Broderick" <rsb000@hotmail.com>
To: classicrendezvous@bikelist.org
Subject: Re: [CR]shipping woes / NOW Campy NR/SR RD rebuild
Date: Sun, 11 Nov 2007 14:04:45 -0600
cc: OROBoyz@AOL.com

Dale et al.,

Not that I am necessarily volunteering my services here, but....

Replacing the cage plates on an early Nuovo / Super Record rear derailleur is really not that difficult to do ... assuming that you follow the proper sequence and also happen to have one of those now somewhat elusive official Campagnolo rebuild kits on hand. The biggest problem in accomplishing this task is replacing the four 808/A pivot spindles. Basically, you start by completely striping the derailleur as you normally would for a complete rebuild. Next, mount the 4002 upper body, 4003 lower body / spring cage, 4006 front plate, 807/A rear plate, and 808/A pivot spindles with 82/A body ferrules, combined assembly into the adjustable clamp affixed to the bed of your drill press and carefully drill out one head on each on the four 808/A spindles such that they can thereafter be withdrawn from the other side of the upper and/or lower bodies. So as to help insure that you do not run your drill bit into the 82/A body ferrules (...although these do come included with the official Campagnolo rebuild kit, they can also be made from scratch using a length of bronze tubing having a suitable ID and OD size which has been cut to length and then chamfered at each end) be very sure to use a properly sized drill bit (i.e. NOT oversized) and to first peen a guide divot into the center of those 808/A pivot spindle heads which are to be drilled so as to minimize any tendency for your bit to wander at the onset (...it also helps to use a high quality cutting bit here). Once these parts have been thoroughly dismantled, cleaned, and inspected for any other possible damage, reassembly is pretty much a reversal in sequence with the one exception of those blasted 808/A pivot spindles. With respect to the official Campagnolo rear derailleur rebuild kits, these include a set of four 82/A body ferrules and four 808/A pivot spindles, the latter having a knurled head on one end and a smooth head on the other which is slightly elongated with a detent in its center. Simply slip the 82/A body ferrules over the smooth end of the 808/A pivot spindles and then insert this combination through the upper/lower body and front/rear plates until the knurled end of the spindle engages. Using a suitably sized center punch, gently drift the knurled ends of pivot spindles into the upper/lower derailleur bodies before turning the whole assembly over and then swaging the extended ends of these very same spindles much as you would a traditional rivet (...remembering to properly support the other end of the spindle itself lest you pound that baby right out the back side of the upper/lower body). From here on out, you are home free as the remainder of your reassembly duties are typical of any other rear derailleur rebuild you have done. The only "downside" to this procedure is that the two respective ends of those official Campagnolo replacement 808/A pivot spindles will NOT look the same as those pretty chrome ones which came stock on a derailleur freshly minted from Vicenza - but only the cognoscenti are likely to notice such a trivial difference.

I still have a couple of those Campy NR/SR rear derailleur rebuild kits squirreled away for some special project as of yet to be determined. The primary bits themselves are such that I would think that they could be replicated with relative ease by any competent CNC machine shop. Should someone out there be willing to seriously consider their remanufacture, I would be happy to provide detailed photographs and dimensional measurements for that purpose, or alternately, hand an actual sample over to the shop that I have worked with in the past on this type of project for an estimate as to the time and monies involved in their replication. Sorry, I am not particularly interested in selling outright any of those"genuine" rebuild kits I have on hand at this time.

Robert "shiftless sort" Broderick ...the "Frozen Flatlands" of South Dakota Sioux Falls, USA

P.S. To be accurate, Andrew at Yellow Jersey does have (...or at least he did have as of last summer) a bounty of NOS 4006 SR rear derailleur front plates on hand - so many that he was giving them away to use as a key fob for any order exceeding a specific monetary value. However, he does NOT have any 807/A rear plates or the aforementioned Campy rear derailleur rebuild kits on hand.

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>From: oroboyz@aol.com

>To: otis@otisrecords.com, classicrendezvous@bikelist.org

>Subject: Re: [CR]shipping woes

>Date: Sun, 11 Nov 2007 10:59:27 -0500

>

> Check with Yellow Jersey in Madison WI. For

>some reason they have a ton of loose cage plates for the 1st gen SR ders.

>You should be able to rebuild it with new plates.

>

>

>Thanks Otis. Now that's cool to know! Are you an ace at taking apart and

>reassembling NR/SR rear ders? I have never done it and am apprehensive. Is

>anyone on the CR list competent & willing to do that operation as a paid

>service?

>

>Dale Brown

>cycles de ORO, Inc.

>1410 Mill Street

>Greensboro, North Carolina USA

>336.274.5959

>http://www.cyclesdeoro.com

>http://www.classicrendezvous.com

>

>-----Original Message-----

>From: Otis <otis@otisrecords.com>

>To: classicrendezvous@bikelist.org

>Sent: Sat, 10 Nov 2007 7:23 pm

>Subject: [CR]shipping woes

>

>"Can the RD be taken apart and be bent back into a usable condition or am

>in

>he market for a Nuovo Record RD?"

>

>Actually it looks like you are in the market for a first generation Super

>Record RD. Which is a bummer! Check with Yellow Jersey in Madison WI. For

>some reason they have a ton of loose cage plates for the 1st gen SR ders.

>You should be able to rebuild it with new plates.

>

>As for recourse. Yeah it's a bad pack. It's best to remove the rear der and

>zip tie it to the seat stay out of the way. Or at least block around it

>with

>styrafoam or cardboard. But if it was not insured I don't think there's

>much

>you can do. If the seller is a stand-up guy he should offer to pay for the

>repair or find you another der.

>

>Also, make sure you put an alignment gauge on the hanger as it is mostly

>likely tweaked as well.

>

>Cheers, Jon Williams

>Grants Pass OR USA