I think the Rally is by far the best Campy RD of the on-topic era. Not only did it use the horizonal parallelogram, but it was the first Campy RD to use the Simplex-style sprung upper pivot. This did not appear on Campy racing RD's until the C-Record.
I'm always amazed that Campy, after demonstrating for decades that they didn't have a clue about touring components, suddenly came up with an inspired effort in the Rally.
Regards,
Jerry Moos
Tory Werne <twerne@bellsouth.net> wrote: Charles and group:
RE: Campagnolo Euclid Wide Range Derailleur
If there is continued interest, BananaBrain has been selling these as a staple item for a while now. They apparently have quite a quantity, as these offerings appear as part of their regular buy-it-now inventory.
Current Listings
eBay # 320079837810 eBay # 320102891887
-- Sincere Thanks to Fred for the wonderful all-terrain touring machine link! -- I think Jerry did a perfect job of summarizing the Suntour patent legacy, slant relationship and relative Crane/Vx/Rally-Euclid performance observations. I have found that Campy's interpretation can also shift very well, but it requires a little trial and error to determine the best rear axle dropout location as a function of the freewheel choice. I also found the Campy performance to improve/degrade with different largest-to-second-largest cog combinations. (several 31,26 and 31,25 jumps in my past have worked very well). The Campy would not be my choice if you NEEDED a 34t rear cog ... but at 31 it continues to be a dear friend. My opinions ... FWIW.
Kindest Regards, Tory Werne Woodstock, Georgia USA
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-----Original Message----- From: Jerome & Elizabeth Moos Sent: Friday, May 11, 2007 8:56 PM To: yavo; chasds@mindspring.com Cc: classicrendezvous@bikelist.org Subject: Re: [CR]ebay outing: Campagnolo wide-ratio derailleur
That looks almost identical to a later verision of the Rally. BTW, that is NOT a slant parallelogram. It is a horizonal parallelogram like the early 70's Shimano Crane. The difference is, on a horizonal parallelogram, the front and rear plates of the parallelogram lie in a vertical plane. On the patented SunTour design, they lie in a plane "slanted" away from the vertical. By doing this, SunTour was able to make the chain travel in a path more or less parallel to the plane in which the FW teeth lie, therefore maintaining a more constant distance between jocky wheels cage and the FW. The horizonal parallelogram was evidently an attempt to obtain part of the benefit of a slant parallelogram without violating the SunTour patents which were still in force at the time. It worked. That's what a Shimano Crane shifts much better than a Campy NR, but not as well as a SunTour Vx. When the SunTour patents expired, everyone went to slant parallelograms. About the same time they also went to the Simplex-designed sprung upper pivot, which was the reason the better Simplex derailleurs shifted much better than Campy.
Regards,
Jerry Moos Big Spring, TX
yavo wrote:
That's a Campy Off-Road Record deraileur. I had one on my (since sold)
Ouellette "Expedition" bike. More photos of Campagnolo Off-Road group on
that bike: http://twistcomm.com/
Fred Yavorsky
On 5/11/07, chasds@mindspring.com wrote:
> I found this item interesting:
>
> http://ebay.com/
>
> Is this derailleur essentially the same as the original Rally? Or was
> it designed after the patent on the Suntour slant-parallelogram
> expired?
>
> Thanks.
>
> Charles Andrews
> Los Angeles
> _______________________________________________
--
Fred Yavorsky
Jenkintown, PA
http://www.twistcomm.com/