Need help with and Ironman tires and brakes
03-21-23, 09:15 AM
#51
Senior Member
Join Date: Dec 2020
Location: Wake Forest, NC
Posts: 5,776
Bikes: 1989 Cinelli Supercorsa
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 3502 Post(s)
Liked 2,917 Times
in
1,771 Posts
03-21-23, 12:01 PM
#53
aka: Dr. Cannondale
Join Date: Jul 2009
Posts: 7,729
Mentioned: 234 Post(s)
Tagged: 0 Thread(s)
Quoted: 2152 Post(s)
Liked 3,402 Times
in
1,203 Posts
So you proved it. Single pivots worked badly with aero levers which have the same cable entry as brifters. The lever must match the caliper. Shimano brought out dual pivots because single pivots no longer worked with modern levers because of how the cable enters the lever.
Engineers have understood levers ,human handsize and how brakes work for a long time, even before 1985 they knew.
Engineers have understood levers ,human handsize and how brakes work for a long time, even before 1985 they knew.
Shimano introduced SLR aero braking design in 1987 (Dura Ace 7401, 105-1051, and 600-6209), all of them mated with single pivot brakes. While 7401 and 6209 may have had somewhat weaker return springs, 105 return springs are as strong as later SLR brake levers. And, of course, they all worked well with contemporary single pivot Shimano brakes, as dual pivot units were not introduced for several years.
An interesting side note is that Shimano also produced two non-aero SLR brake design levers, the 1050 and 6400. Mainly seen on Europe but they do make their way over here. I have a pair of each and although they work quite nicely with the single pivot calipers within their respective series, they are also great with dual pivots.
So, there’s that.
__________________
Hard at work in the Secret Underground Laboratory...
Hard at work in the Secret Underground Laboratory...
Last edited by rccardr; 03-21-23 at 07:51 PM.
