Amir,
Yes indeed, the Raid calipers employ a unique 75 mm C-t-C pivot point measurement whereas as MAFAC Racer / Competition / 2000 / GT / "S" models of center pull calipers ALL have either a 62 mm or 63 mm C-t-C pivot point depending upon whether they employ a fixed or adjustable bridge. Further specifications for all of these models can be found using the following link:
http://www.wooljersey.com/
I am sorry to say that I do not have precise measurements for either the Top 63 or Tiger models of center pull calipers, however, if I were forced to provide a "best guess", I would suspect that the Top 63 were built upon a 62 mm C-t-C platform whereas the Tiger used a much wider configuration (...although I cannot say whether or not it has the same 75 mm C-t-C measurement as the later Raid model).
Robert "dem's da brakes" Broderick ..the "Frozen Flatlands" of South Dakota Sioux Falls, USA
-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Amir Avitzur Sent: Sunday, October 12, 2008 11:30 AM To: classicrendezvous@bikelist.org Subject: [CR]Mafac Raid Brakes or Measurements needed
My Mafac braze-on brake project is progressing nicely.
see http://flickr.com/
The next step is to cut the blank studs so that they'll fit at exactly 62mm C-to-C both front and back.
Does anyone know if :Raid" brakes' pivot-to-pivot measurement is different than Dural Forge/Racer/2000/Competition. If so, what does it measure pivot center-to-pivot center?
How about "Top 63" and "Tiger" brake Calipers?
Amir Avitzur
Ramat-Gan, Israel