[CR]Re: Classicrendezvous Digest, Vol 37, Issue 132

(Example: Framebuilders:Alex Singer)

Date: Thu, 26 Jan 2006 08:56:05 -0800
From: "Curtis Moran" <cmoran@accoes.com>
To: <classicrendezvous@bikelist.org>
Subject: [CR]Re: Classicrendezvous Digest, Vol 37, Issue 132

Re: Anyone up for a brevet in san diego: I plan to ride the 200k this sat. on my 1979 Paramount, white with a 27" ctt frame. I will undoubtably be bringing up the rear so have mercy.

Curtis Moran, Lancaster CA cmoran@accoes.com
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CR

Today's Topics:

1. Max freewheel cog size for Campag rear der. (scott Baxter) 2. RE: Bike mechanic insanity (Mark Bulgier) 3. F/S ebay Masi Gran Corsa damaged frame 60cm (mine) (dddd) 4. Re: Anyone up for a Brevette in San Diego? (Mark Wolfe) 5. Re: Pic of the Day correction - long-levered cambio Corsa (Sergio Servadio) 6. Re: Brooks select (Chuck Schmidt) 7. Re: NAHBS: Anybody going to the KOF party in march? Also Redcay fixie build help needed (K. A. Thomas) 8. 70s, 80s riders: name them! (Freek Faro) 9. Re: NAHBS: Anybody going to the KOF party in march? Also Redcay fixie build help needed (K. A. Thomas) 10. Pic of the Day - Magni's Simplex shifters (Aldo Ross) 11. Re: Huret Jubilee intro date 12. Re: Max freewheel cog size for Campag rear der. (Jerome & Elizabeth Moos) 13. Re: Re: Huret Jubilee intro date (Fred Rafael Rednor) 14. Re: Bike mechanic insanity (The Bike Stand) 15. Re: Max freewheel cog size for Campag rear der. (Mitch Harris)

----------------------------------------------------------------------

Date: Wed, 25 Jan 2006 19:16:14 -0800 (PST) From: scott Baxter <rg500g@yahoo.com> To: classicrendezvous@bikelist.org Subject: [CR]Max freewheel cog size for Campag rear der. Message-ID: <20060126031614.71645.qmail@web30212.mail.mud.yahoo.com> Content-Type: text/plain; charset=iso-8859-1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: list Message: 1

My Gran Sport rear derailleur clearly states on the back that the largest rear cog permitted is 26 tooth. I've got a 151 BCD crank and my small ring is 46 teeth. I need all the mechanical advantage I can get. I was about to buy a Regina 14/28 freewheel, but held off until I got feedback from the list. I don't want to spend $60 only to have the derailleur pulleys slam into the big cog when I try to grab the lowest gear I can.

SO, how compatible is a 28 tooth rear cog with a Campagnolo rear der that says max 26 teeth? I've had a couple of folks tell me that it's doable if you are careful with the chain length, undoubtedly to flatten out the pulley cage as much as possible. My chainrings are a 46/50, so there's no big jump there. Feedback from the list would be greatly appreciated.

Regarding chainrings, if anyone has a Campagnolo 151 BCD chainring in a 52 tooth size or greater for sale please contact me offline, rg500g@yahoo.com.

Scott Baxter St. Louis, MO

__________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------

Date: Wed, 25 Jan 2006 21:35:41 -0800 From: "Mark Bulgier" <Mark@bulgier.net> To: <wheelman@nac.net>, <classicrendezvous@bikelist.org> Subject: RE: [CR]Bike mechanic insanity Message-ID: <9327C3B25BD3C34A8DBC26145D88A90702CDF3@hippy.home.here> Content-Type: text/plain;charset="US-ASCII" MIME-Version: 1.0 Precedence: list Message: 2

Ray Homiski wrote:
> Wonder why more early bike mechanics have not committed
> suicide. [big snip]
> I installed the new rings on the crank. Now mind you this is
> an exact switch of TA for TA. Same spindle and all. Now when
> I install the crank on the BB the smaller ring hits the
> frame. It was a good 3-4 mm away before but now it
> interferes.

Ray,

This is nothing specific to TA or old bike parts - it's just as true today and is pretty much inevitable. You went to a small chainring that's fully 10 teeth larger - of course it comes closer to the frame. Looking down on the chainstay from above, note the angle the stay makes with the centerplane of the bike. That angle is the cause of the difference in clearance with smaller/larger rings. You can always use a shorter spindle with a smaller chainring, for a given frame.

Frames made for a triple with that large of an inner usually will have a fairly substantial indent in the outside of the chainstay for clearance. While the dent can be added later by a careful framebuilder, it's a little risky. Paint will almost certainly flake.

A simple fix to your problem is use the original 26 tooth small ring instead of the 36, but with the newer middle and big rings. I'm not guaranteeing it'll work but it probably will, and it'll definitely cure the chainring-chainstay clearance issue.

Mark Bulgier Seattle WA USA ------------------------------

Date: Wed, 25 Jan 2006 21:38:35 -0800 From: "dddd" <dddd@pacbell.net> To: "Classic Rendezvous" <classicrendezvous@bikelist.org> Subject: [CR]F/S ebay Masi Gran Corsa damaged frame 60cm (mine) Message-ID: <008201c6223a$c0aabba0$4001a8c0@compaq> References: <20060126022039.60637.qmail@web61322.mail.yahoo.com> Content-Type: text/plain;format=flowed;charset="iso-8859-1"; reply-type=original MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: list Message: 3

Needs tube replacement, but has seen little use. If any frame's worth

fixing...

http://tinyurl.com/cdmft

David Snyder Auburn, CA

------------------------------

Date: Wed, 25 Jan 2006 22:01:59 -0800 From: Mark Wolfe <markw@wolfenet.org> To: "brianbaylis@juno.com" <brianbaylis@juno.com> Cc: classicrendezvous@bikelist.org Subject: Re: [CR]Anyone up for a Brevette in San Diego? Message-ID: <43D865D7.8000507@wolfenet.org> In-Reply-To: <20051209.225017.29358.102297@webmail44.lax.untd.com> References: <20051209.225017.29358.102297@webmail44.lax.untd.com> Content-Type: text/plain; charset=ISO-8859-1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: list Message: 4

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

brianbaylis@juno.com wrote:
> Matty!
>
> Cowabunga! I guess I'm committed (the men in the white suits come to pic
> k me up in the morning) to the ride. Allrightty then. I guess we have a
> party!
>
> I know for sure I won't be able to do enough riding before the framebuil
> ders show to go beyond the 200KM. I will however start to ride with the
> group that does centuries every weekend after the show and begin working
> up to the greater distances. I'm thinking PBP in maybe 2008 or 09, but
> you never know. Perhaps if I can have the pesky 3rd arm growing out of m
> y back removed, the savings in weight and energy to operate it might be
> enough to get me there. We'll see, but I suspect 2007 will be a tad too
> soon for me. What time of year is PBP?
>
> I do plan on takeing the AeroTour to Paris for a vacation and putting it
> through the paces a lot before then. Thinking about a swift tour south
> from SF to SD maybe this comming summer to see what can be accomplished
> . There is going to be some adaptation from track riding to touring whic
> h may take a while. You do know that until recently, climbing was agains
> t my religion, right?
>
> Matty, you're the BEST! Thanks for jumping in.
>
> Brian Baylis
> La Mesa, CA
>
> Thanks for comming on board, Matty.

Ok, looks like 2 days left. Everyone is ready right? :) I checked out the route from where it deviates from the sdbc ride to where it hits Oceanside. Doesn't look bad at all. I'm gonna do this on my 1933 Charles Mochet built Frances Faure replica bike. Even though I've only done about 100 miles int he last month, I'm going to knock this out. 100oz bladder with Perpeteum in the seat back, and 50oz of water in the seat bag. Plan on about 10 hours give or take. May need a light as that will have us finishing around 5pm. I'm hoping to be done by 3pm.

- -- Mark Wolfe Lakeside, Ca. http://www.wolfenet.org gpg fingerprint = 42B6 EFEB 5414 AA18 01B7 64AC EF46 F7E6 82F6 8C71 "Our products just aren't engineered for security." - Brian Valentine, senior VP in charge of Microsoft's Windows development 5 Sept 2002 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFD2GXX70b35oL2jHERAq0oAJ4iEA0iNJfUOK9OioF72r0/txoxPgCgk12Q pYb23x0W+RiqTisXwb3rdX0= =vprd -----END PGP SIGNATURE----- ------------------------------

Date: Thu, 26 Jan 2006 08:00:57 +0100 From: Sergio Servadio <servadio@df.unipi.it> To: aldoross4@siscom.net Cc: classicrendezvous@bikelist.org Subject: Re: [CR]Pic of the Day correction - long-levered cambio Corsa Message-ID: <43D873A9.3090406@df.unipi.it> In-Reply-To: <43d7abaf.e6.3e0d.1016835763@siscom.net> References: <43d7abaf.e6.3e0d.1016835763@siscom.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: list Message: 5

aldoross4 wrote:
>"After more research, I've decided that the rider is
>probably Alfredo Martini, the bike is his Wilier-La
>Triestina, and the race is the 1949 Tour de France."
>
> In fact I was very skeptical about your attribution: for one thing, Magni was a much shorter guy.

About the cambio they were using at that time I guess one would only have to consult Benjo Maso, or even Alfredo Martini ... .

Sergio Pisa ------------------------------

Date: Wed, 25 Jan 2006 23:46:10 -0800 From: Chuck Schmidt <chuckschmidt@earthlink.net> To: classicrendezvous@bikelist.org Subject: [CR]Re: Brooks select Message-ID: <43D87E14.580C2011@earthlink.net> References: <12985337.1138223896363.JavaMail.root@elwamui-hybrid.atl.sa.earthlink.net> Content-Type: text/plain; charset=us-ascii MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: list Reply-To: chuckschmidt@earthlink.net Message: 6

My reply bounced so I'm posting to the list...

worthy2@earthlink.net wrote:
>
> Chuck, Well that was edifying...I didn't get anything like those results when I did a search. But, my sample does not say "Professional" anywhere, nor is there an Allen-head tensioner in the nose, nor a date code on the metal or the leather. I have learned from this list that 3-holes can still be the mark of a Pro.
> Thanks for you efforts,
> Alan

Hi Alan,

You have to put each word in quotes joined by the word 'and' ("brooks" and "select") for the search to work... brooks select won't get as many results.

Brooks made a few saddle models that never showed up in any catalogs I ever saw. Always something new to learn... keeps it interesting!

Take care, Chuck Schmidt South Pasadena, Southern California

. ------------------------------

Date: Wed, 25 Jan 2006 11:52:35 -0800 From: "K. A. Thomas" <kthomas@pacbell.net> To: jimmy katynski <jimmycue@yahoo.com>, classicrendezvous@bikelist.org Subject: Re: [CR]NAHBS: Anybody going to the KOF party in march? Also Redcay fixie build help needed Message-ID: <4.3.2.7.2.20060125114853.013adc20@postoffice.pacbell.net> In-Reply-To: <20060125042027.36362.qmail@web35507.mail.mud.yahoo.com> Content-Type: text/plain; charset=us-ascii; format=flowed; x-avg-checked=avg-ok-3CA374C8 MIME-Version: 1.0 Precedence: list Message: 7

Planning on being there for the 3 days with the wife. Hope I can get it clear on the calender! Will be my first. Is there much time for riding and other fun and frolic, or is it all show and seminars? I want to know how to act when I get there...

Kirk A. Thomas Arcadia CA

At 08:20 PM 1/24/06 -0800, jimmy katynski wrote:
>Wondering if anybody is going to San Jose in march for
>the builders show? Im going for the 3 day event and
>want to meet up with any CR members going.
> Im going to build up my Redcay fixie and was
>wondering from the fixed gear crowd what gearing setup
>i should use? In my area it's very flat with alot of
>stop and go, what should i use?
>Thanks
>
>Jimmy Katynski
>31543 Edgeworth Dr
>Madison Heights Mi 48071
>248-396-3465
>
>__________________________________________________
>Do You Yahoo!?
>Tired of spam? Yahoo! Mail has the best spam protection around
>http://mail.yahoo.com
>_______________________________________________
>
>
>
>--
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------------------------------

Date: Thu, 26 Jan 2006 10:07:37 +0100 From: Freek Faro <khun.freek@gmail.com> To: CR Rendezvous <Classicrendezvous@bikelist.org> Subject: [CR]70s, 80s riders: name them! Message-ID: <df813d780601260107r702ee432u@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 MIME-Version: 1.0 Precedence: list Message: 8

Just a nice pic from 2004, with some well-dressed gentlemen in their fifties. Can you name them? A clue: the group is visiting the farm of one o f them. And this particular gentleman turned fifty that year.

http://www.wooljersey.com/gallery/album150/grote_meneren_2004

Freek past fifty already Faro Rotterdam Netherlands

------------------------------

Date: Wed, 25 Jan 2006 11:52:35 -0800 From: "K. A. Thomas" <kthomas@pacbell.net> To: jimmy katynski <jimmycue@yahoo.com>, classicrendezvous@bikelist.org Subject: Re: [CR]NAHBS: Anybody going to the KOF party in march? Also Redcay fixie build help needed Message-ID: <4.3.2.7.2.20060125114853.013adc20@postoffice.pacbell.net> In-Reply-To: <20060125042027.36362.qmail@web35507.mail.mud.yahoo.com> Content-Type: text/plain; charset=us-ascii; format=flowed; x-avg-checked=avg-ok-3CA374C8 MIME-Version: 1.0 Precedence: list Message: 9

Planning on being there for the 3 days with the wife. Hope I can get it clear on the calender! Will be my first. Is there much time for riding and other fun and frolic, or is it all show and seminars? I want to know how to act when I get there...

Kirk A. Thomas Arcadia CA

At 08:20 PM 1/24/06 -0800, jimmy katynski wrote:
>Wondering if anybody is going to San Jose in march for
>the builders show? Im going for the 3 day event and
>want to meet up with any CR members going.
> Im going to build up my Redcay fixie and was
>wondering from the fixed gear crowd what gearing setup
>i should use? In my area it's very flat with alot of
>stop and go, what should i use?
>Thanks
>
>Jimmy Katynski
>31543 Edgeworth Dr
>Madison Heights Mi 48071
>248-396-3465
>
>__________________________________________________
>Do You Yahoo!?
>Tired of spam? Yahoo! Mail has the best spam protection around
>http://mail.yahoo.com
>_______________________________________________
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Anti-Virus.
>Version: 7.1.375 / Virus Database: 267.14.21/236 - Release Date: 1/20/06

-- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.1.375 / Virus Database: 267.14.22/239 - Release Date: 1/24/06

------------------------------

Date: Thu, 26 Jan 2006 08:07:26 -0500 From: "Aldo Ross" <aldoross4@siscom.net> To: <classicrendezvous@bikelist.org> Subject: [CR]Pic of the Day - Magni's Simplex shifters Message-ID: <001601c62279$752f5020$1f17fbd1@Newhouse> Content-Type: text/plain;charset="iso-8859-1" MIME-Version: 1.0 Precedence: list Message: 10

Pic of the Day 26th January, 2006

1949 Magni's Simplex Shifters

http://www.wooljersey.com/gallery/album17/Magni_49TdF_Simplex

Click on pic for much larger image.

Here's a pic showing the second set of shifters used by Fiorenzo Magni

(and probably the rest of the Italian B team) during the 1949 TdF. the

stocky Italian is on his way to winning stage 10, from San Sebastian to

Pau, on a Wilier - La Triestina equipped with Simplex derailleurs. On

Magni's wheel - Edouard Fachleitner, in his purple and white jersey of

the Sud-Est regional team.

The two Italian teams used quite a variety of derailleurs in the 1949 Tour, with the National Team split between Simplex (Coppi and his supporting riders) and Cervino (Bartali and his supporting riders). Add the alternating Simplex and Campagnolo cambio Corsa derailleurs of the

Cadets Italiens, and you have a pretty good collection of parts!
>From "La Gazzetta dello Sport - 200 Momenti Fotografici del 'Tour' 1949" by Emilio De Martino.

Aldo Ross Middletown, Ohio

------------------------------

Date: Thu, 26 Jan 2006 08:15:30 EST From: EdVintage63@aol.com To: classicrendezvous@bikelist.org Subject: [CR]Re: Huret Jubilee intro date Message-ID: <252.54b9ae8.310a2572@aol.com> Content-Type: text/plain; charset="US-ASCII" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: list Message: 11


> I have a Huret catalog 1973 with the Jubilee. I believe this
> was the first year .
> Ride On
> Charlie Petry Cochranville PA
>

Since surprisingly noone else has mentioned it, Berto in "Dancing Chain" says the Jubilee was introduced in 1972.

Ed Granger Lancaster, PA, USA

------------------------------

Date: Thu, 26 Jan 2006 05:25:41 -0800 (PST) From: Jerome & Elizabeth Moos <jerrymoos@sbcglobal.net> To: scott Baxter <rg500g@yahoo.com>, classicrendezvous@bikelist.org Subject: Re: [CR]Max freewheel cog size for Campag rear der. Message-ID: <20060126132541.95129.qmail@web81111.mail.mud.yahoo.com> In-Reply-To: <20060126031614.71645.qmail@web30212.mail.mud.yahoo.com> Content-Type: text/plain; charset=iso-8859-1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: list Message: 12

There is no hard and fast number for how large a rear cog a given RD will handle. It's all a matter of geometry. I believe a Campy NR was also supposed to handle only a 26T, but I've used them with a 14-28 FW and 52-42 chainrings lots of times. There are lots of factors involved, including not only the geometry of the RD, but the chainstay length, the model of chain, the front chainwheel sizes, the chain length, the type of rear DO, and the position of the wheel in the DO's. In general, a smaller spread on the chainrings makes it easier to find a chain length that works with a larger rear cog. With a 46-50 front, I'd guess it shouldn't be that hard to handle a 14-28 on the rear. Be sure you have a good chain tool. You'll probably have to try several chain lengths before you find the right one.

Regards,

Jerry Moos Big Spring, TX

scott Baxter <rg500g@yahoo.com> wrote: My Gran Sport rear derailleur clearly states on the back that the largest rear cog permitted is 26 tooth. I've got a 151 BCD crank and my small ring is 46 teeth. I need all the mechanical advantage I can get. I was about to buy a Regina 14/28 freewheel, but held off until I got feedback from the list. I don't want to spend $60 only to have the derailleur pulleys slam into the big cog when I try to grab the lowest gear I can.

SO, how compatible is a 28 tooth rear cog with a Campagnolo rear der that says max 26 teeth? I've had a couple of folks tell me that it's doable if you are careful with the chain length, undoubtedly to flatten out the pulley cage as much as possible. My chainrings are a 46/50, so there's no big jump there. Feedback from the list would be greatly appreciated.

Regarding chainrings, if anyone has a Campagnolo 151 BCD chainring in a 52 tooth size or greater for sale please contact me offline, rg500g@yahoo.com.

Scott Baxter St. Louis, MO

__________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________

------------------------------

Date: Thu, 26 Jan 2006 05:44:20 -0800 (PST) From: Fred Rafael Rednor <fred_rednor@yahoo.com> To: classicrendezvous@bikelist.org Subject: Re: [CR]Re: Huret Jubilee intro date Message-ID: <20060126134420.54366.qmail@web30609.mail.mud.yahoo.com> In-Reply-To: <252.54b9ae8.310a2572@aol.com> Content-Type: text/plain; charset=iso-8859-1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: list Message: 13

> Since surprisingly noone else has mentioned it, > Berto in "Dancing Chain" says the Jubilee was > introduced in 1972. Ed, Good thinking! Also, I really have to believe it was early in the year. My deduction (which apparently was off a bit) was 1971. But that was - indirectly - related to girls and sex, so I was certain I couldn't be too far off with the date. Now I must admit that it's a sort of sad commentary when the most poignant recollection one has of a past girlfriend is her neighbor's bicycle. Fred Rednor - Arlington, Virginia (USA)

__________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------

Date: Thu, 26 Jan 2006 09:03:44 -0500 From: "The Bike Stand" <smwillis@verizon.net> To: <wheelman@nac.net>, <classicrendezvous@bikelist.org> Subject: Re: [CR]Bike mechanic insanity Message-ID: <00cf01c62281$525278e0$2d01a8c0@bike1> References: <50916.216.118.68.55.1138243433.squirrel@webmail.nac.net> Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=original MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: list Message: 14

Hi Ray, Bring it in I can put a small washer under the fixed cup to get you a little more room. And, do not tell anybody but we might be able to dimple in the right chainstay some too. Steven Willis The Bike Stand 1778 East Second Street Scotch Plains NJ 07076 908-322-3330 http://www.thebikestand.com


----- Original Message -----
From: wheelman@nac.net
To: classicrendezvous@bikelist.org
Sent: Wednesday, January 25, 2006 9:43 PM
Subject: [CR]Bike mechanic insanity



> Wonder why more early bike mechanics have not committed suicide. I'll be
> first to admit that I am a novice at this but if every business was run
> like the road bike business was, there would be a lot more waste and
> expense then necessary. The lack of standardization always puzzeled me but
> I just took it with a grain of salt (what does that mean anyway?)
>
> Okay, I was working on a bike to install a triple TA crank and rings on
> it. First I needed a BB for the job and I used the W-DIH method. You know,
> look in the bin and see What Do I Have. Since I have several BBs I did
> some basic measurements and found one that came close. After installation
> I found that although the spindle was what I wanted the taper was not. The
> crank did not even make it half way to be seated. Out it came and now I am
> smarter so I go with one that seats better before I install it. Okay now
> install the cranks. Of course I installed the non chain side first. When I
> installed the chain side I noticed that there was still a huge gap from
> the BB to the crank. No matter, I will continue and give it a try. Took it
> for one ride and it rode like a pig. Chain alignment problems and ankle
> biting because of the extended crank. Out it came. Next I went to my LBS
> and told my tale of woe. We measured up correctly and found a spindle that
> should work. Installed it and all seems well. Nice close fit from the bb
> to the crank. Very much improved chain line so I thought I was all set.
>
> Well in trial shifts I noticed that the front rings shifted terribly
> (Using a Campy derailleur with a triple 26-36-46. It seemed that I could
> jump to the smallest and largest rings but could not get it to grab that
> middle ring. Explained this situation to my LBS who explained that there
> was to much a gap from the middle ring to the largest ring and he
> suggested making the middle more like a 44 and that would improve the
> situation. Well I got lucky on ebay and found another TA triple ring set
> and got it for a good price. Today arrived a 36-46-50 with the closer
> tooth combination that should work.
>
> I installed the new rings on the crank. Now mind you this is an exact
> switch of TA for TA. Same spindle and all. Now when I install the crank on
> the BB the smaller ring hits the frame. It was a good 3-4 mm away before
> but now it interferes. I am about to take out the bb again and go with
> another one. Sooner or later I will hit on the right combination but did
> not bank on this becoming my own version of rubiks cube.
>
> Ray Homiski
> Elizabeth, NJ
> _______________________________________________
>

------------------------------

Date: Thu, 26 Jan 2006 07:47:26 -0700 From: Mitch Harris <mitch.harris@gmail.com> To: Jerome & Elizabeth Moos <jerrymoos@sbcglobal.net> Cc: scott Baxter <rg500g@yahoo.com> Cc: classicrendezvous@bikelist.org Subject: Re: [CR]Max freewheel cog size for Campag rear der. Message-ID: <8801bb250601260647g528ccf3en68b677d7834d6351@mail.gmail.com> In-Reply-To: <20060126132541.95129.qmail@web81111.mail.mud.yahoo.com> References: <20060126031614.71645.qmail@web30212.mail.mud.yahoo.com> <20060126132541.95129.qmail@web81111.mail.mud.yahoo.com> Content-Type: text/plain; charset=ISO-8859-1 MIME-Version: 1.0 Precedence: list Message: 15

No experience with the Gran Sport, but I've had a N. Record shift well to a 28 cog but I needed to have the wheel all the way back in long drop outs so that the der. hanger was in front of the hub spindle.

Mitch Harris Little Rock Canyon, Utah

On 1/26/06, Jerome & Elizabeth Moos <jerrymoos@sbcglobal.net> wrote:
>
> There is no hard and fast number for how large a rear cog a given RD will
> handle. It's all a matter of geometry. I believe a Campy NR was also
> supposed to handle only a 26T, but I've used them with a 14-28 FW and 52- 42
> chainrings lots of times. There are lots of factors involved, including not
> only the geometry of the RD, but the chainstay length, the model of chain ,
> the front chainwheel sizes, the chain length, the type of rear DO, and th e
> position of the wheel in the DO's. In general, a smaller spread on the
> chainrings makes it easier to find a chain length that works with a large r
> rear cog. With a 46-50 front, I'd guess it shouldn't be that hard to hand le
> a 14-28 on the rear. Be sure you have a good chain tool. You'll probabl y
> have to try several chain lengths before you find the right one.
>
> Regards,
>
> Jerry Moos
> Big Spring, TX
>
>
>
> scott Baxter <rg500g@yahoo.com> wrote:
> My Gran Sport rear derailleur clearly states on the
> back that the largest rear cog permitted is 26 tooth.
> I've got a 151 BCD crank and my small ring is 46
> teeth. I need all the mechanical advantage I can get.
> I was about to buy a Regina 14/28 freewheel, but held
> off until I got feedback from the list. I don't want
> to spend $60 only to have the derailleur pulleys slam
> into the big cog when I try to grab the lowest gear I
> can.
>
> SO, how compatible is a 28 tooth rear cog with a
> Campagnolo rear der that says max 26 teeth? I've had
> a couple of folks tell me that it's doable if you are
> careful with the chain length, undoubtedly to flatten
> out the pulley cage as much as possible. My
> chainrings are a 46/50, so there's no big jump there.
> Feedback from the list would be greatly appreciated.
>
> Regarding chainrings, if anyone has a Campagnolo 151
> BCD chainring in a 52 tooth size or greater for sale
> please contact me offline, rg500g@yahoo.com.
>
> Scott Baxter
> St. Louis, MO
>
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End of Classicrendezvous Digest, Vol 37, Issue 132 **************************************************