This post is long overdue. =( I have valid reasons for this okay... I was brought to the gates of hell by a deadly condition called acute viral nasopharyngitis. Anyway, back to the derailleur...
The result is quite stunning.
Weight of original steel hardware, 24.1g.Uhh... actually, I accidentally labeled the clamp bolt twice.
Adding the carbon clamp it becomes 14 modifications again (in the title).
(1) Spring (2) Clamp bolt (3) Cable clasp plate (4) Cable clasp bolt (5) C-clip for pin (6) C-clip for pin (7) Mislabelled (8) Limiter screw (9) Limiter screw (10) Washer for spring (11) Cage mounting bolt (12) Cage mounting bolt (13) Cage mounting pin (14) Spring mounting pin (Unnumbered) Parlee carbon clamp.
Changing for aluminium pins, bolts and washers, followed by a titanium spring, 17.4g is saved. The carbon clamp reduces a further 22.5g from the BBB steel clamp with titanium bolt (28.8g), giving a total weight saving of 39.9g. That's 38.4% weight reduction from a drivetrain component ;) Jurgen really helped here, so I recommend his shop out of common courtesy. Any part involving C-clips is hell, so you might want him to do it for you. I swear he doesn't earn much from it if you've tried modifying a rear derailleur.
Changing for aluminium pins, bolts and washers, followed by a titanium spring, 17.4g is saved. The carbon clamp reduces a further 22.5g from the BBB steel clamp with titanium bolt (28.8g), giving a total weight saving of 39.9g. That's 38.4% weight reduction from a drivetrain component ;) Jurgen really helped here, so I recommend his shop out of common courtesy. Any part involving C-clips is hell, so you might want him to do it for you. I swear he doesn't earn much from it if you've tried modifying a rear derailleur.
A look at where some of the parts go. I wrote the numbers 'rightside-down'.
No, actually, picasa screwed up the position of the pictures.Another look at some of the parts, from another angle.
I don't have photos of every angle of the parts. And maybe I should have taken pictures of the measurements of the bolts with a vernier caliper. Let me know if you're interested.
Carbon clamp, 6.3gThe carbon clamp is really, really thin and flexible. You can actually break it with your bare hands while pulling it apart to mount it onto your frame. However, the alignment is dead-on. The BTP front derailleur carbon clamp is thicker, tends to be misaligned, and doesn't wrap around fully like this one does. The result is that you get a really secure clamp, and one which is difficult to break at that (much because of its flexibility).
End resultBtw, as I was saying, reinstalling the rear derailleur pivot bolt is easy... if you were born with 4 hands. I started a thread on starbike here and it seems like no one has enjoyed doing it. My favorite reply was from mattr:
"The thing is, on the 5th or 6th attempt, i get it sorted, and it just clicks, straight in, no issues. But i'm already covered in blood and swearing from the previous attempts."
I recommend reading the thread for the sheer amusement value.
"The thing is, on the 5th or 6th attempt, i get it sorted, and it just clicks, straight in, no issues. But i'm already covered in blood and swearing from the previous attempts."
I recommend reading the thread for the sheer amusement value.
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