Racer Tech Thread
#1502
Senior Member

Joined: Jan 2014
Posts: 10,588
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From: Southern California, USA
Bikes: 1979 Raleigh Team 753
#1503
Senior Member

Joined: Jan 2014
Posts: 10,588
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From: Southern California, USA
Bikes: 1979 Raleigh Team 753
#1505
¯\_(ツ)_/¯
Joined: Jun 2008
Posts: 10,978
Likes: 4
From: Redwood City, CA
Bikes: aggressive agreement is what I ride.
do I have to go back a million posts and research, or did you at one point say you had to clean out excess chain lube from the contact points?
#1506
Senior Member

Joined: Jan 2014
Posts: 10,588
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From: Southern California, USA
Bikes: 1979 Raleigh Team 753
True. Spillage from chain lubing. Its a junior affectation that they lube chains before every race.
There are several things and power was the least of these (@teanrider thought it important).
The skewer was a standard steel shaft skewer tightened as in the video and every other video I saw like Shimano and SRAM tighten them.
They have hardened steel plates on dropouts that angle forward a bit.
I am addressing with Specialized and so far very happy with their immediate response. I was looking for similar experience by posting here.
There are several things and power was the least of these (@teanrider thought it important).
The skewer was a standard steel shaft skewer tightened as in the video and every other video I saw like Shimano and SRAM tighten them.
They have hardened steel plates on dropouts that angle forward a bit.
I am addressing with Specialized and so far very happy with their immediate response. I was looking for similar experience by posting here.
#1507
¯\_(ツ)_/¯
Joined: Jun 2008
Posts: 10,978
Likes: 4
From: Redwood City, CA
Bikes: aggressive agreement is what I ride.
I feel like that Daniel is/was accidentally lubing the skewer has been very undersold in this.
I'm also pretty certain that if anyone tried to rip the wheel out of my bike while the skewer was tightened the (carbon) dropouts would be pretty damaged if/when the wheel was freed.
I'm also pretty certain that if anyone tried to rip the wheel out of my bike while the skewer was tightened the (carbon) dropouts would be pretty damaged if/when the wheel was freed.
#1509
I feel like that Daniel is/was accidentally lubing the skewer has been very undersold in this.
I'm also pretty certain that if anyone tried to rip the wheel out of my bike while the skewer was tightened the (carbon) dropouts would be pretty damaged if/when the wheel was freed.
I'm also pretty certain that if anyone tried to rip the wheel out of my bike while the skewer was tightened the (carbon) dropouts would be pretty damaged if/when the wheel was freed.
Sadly, he's fairly normal.
#1510
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Joined: Aug 2007
Posts: 1,711
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From: Sacramento, CA
Bikes: S-Works SL3 Tarmac, Allez E5, Leader 735TT, others
I'm hoping that I won't regret sticking with a 52/36 on my race bike. That 1 tooth can't really make a noticeable difference, can it??? can it???
#1511
Nah. Let's say you take your sprint to 120 rpm and 11 tooth cog, with the 52 you're at 44.4 mph and with the 53 you're at 45.25. If you're finding you're failing at racing because your sprint is only 44.4 and not 45.25, then there are other issues.
#1513
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Joined: Sep 2010
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I wind out my gears more on downhills trying to chase back on rather than most sprints. A flat sprint usually gets to 40-42, add a tailwind or downhill and that can do quite a bit higher. I've been thinking about going to a 54 just for the badass factor though
#1514
Senior Member

Joined: Jan 2014
Posts: 10,588
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From: Southern California, USA
Bikes: 1979 Raleigh Team 753
#1515
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Joined: Jan 2014
Posts: 10,588
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From: Southern California, USA
Bikes: 1979 Raleigh Team 753
We found better TT times on descents coast/pedal than pedal. Obviously the junior gear made this almost a requirement and how it was discovered, but it works when he has the big gear too.
So rather than hold 120RPM say 40mph, coast in a tuck, and when you get below 39 spin back to 42 and tuck again.
The tuck is more aero and there is less total energy being spent by you.
You are spinning about 1/3 the time and your legs are stronger and fresher.
The 42->39 is a better average speed than holding 40.
#1517
Senior Member

Joined: Jan 2014
Posts: 10,588
Likes: 427
From: Southern California, USA
Bikes: 1979 Raleigh Team 753
So what I did on the wheel pop-out thing. I have ongoing communication with other channels, but I think this will work well. I have pictures, but I'll describe it...
-New procedure with Junior will ensure no oil gets in face between hub and axel
-New procedure to ensure a bit beyond "normal" tightness of skewer
-NOT using lock washers.
-Removed steel plate on inside cassette side. I may remove all of them. Waiting to hear from Specialized.
-Ground dropout inside to a hook so wheel under no clamp does not come out. Then moved wheel forward about 1mm.
My prior test where wheel pops - it is in there solid.
Popped these out.
-New procedure with Junior will ensure no oil gets in face between hub and axel
-New procedure to ensure a bit beyond "normal" tightness of skewer
-NOT using lock washers.
-Removed steel plate on inside cassette side. I may remove all of them. Waiting to hear from Specialized.
-Ground dropout inside to a hook so wheel under no clamp does not come out. Then moved wheel forward about 1mm.
My prior test where wheel pops - it is in there solid.
Popped these out.
Last edited by Doge; 05-13-15 at 02:25 PM.
#1519
The S Bends on my Speed Concept are too low, my wrists still hurts after just an hour ride. Going to look into getting Ski Bends; do I have to refish the whole wiring through to the derailleurs again or is there a way to pop off the R2C Shifter?
#1520
Thread Starter
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Joined: Aug 2007
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you have to rewire it. one nice thing for di2. so annoying to reachable most TT bikes, esp superbikes. (i recently made a similar change.)
#1524
Senior Member

Joined: Jan 2014
Posts: 10,588
Likes: 427
From: Southern California, USA
Bikes: 1979 Raleigh Team 753






