Component group bolt tuning

Discuss light weight issues concerning road bikes & parts.
gumgardner
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by gumgardner

I recall a thread that had the exact bolt types that were needed for each component, so tuning would be easier. I can't find it though and I'm sure it's outdated anyways.

Does anyone know the bolt sizes for today's groups? I'd especially be interested in the campy SR 11. I think I read that the SR already uses aluminum bolts. Is this true ?

by Weenie


bricky21
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by bricky21

I think that most of the top tier groups today are using the lightest bolts possible.

Ypsylon
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by Ypsylon

"Nothing compares to the simple pleasures of a bike ride," said John F. Kennedy, a man who had the pleasure of Marilyn Monroe.

HillRPete
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by HillRPete

Tiso and KCNC have bolt sets as well -- in posh colours even.

gumgardner
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by gumgardner

bricky21 wrote:I think that most of the top tier groups today are using the lightest bolts possible.


Can anyone confirm this?

Ypsylon
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by Ypsylon

Nope.

The F&N save 18g over stock DA7900.

And as long as I don't see the Schmolke bolts on a stock groupset, you ain't got the lightest yet.

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"Nothing compares to the simple pleasures of a bike ride," said John F. Kennedy, a man who had the pleasure of Marilyn Monroe.

gumgardner
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by gumgardner

Where do you get those?!

gumgardner
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by gumgardner

Found it.

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madcow
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by madcow

I think this is the post you originally asked about: viewtopic.php?f=3&t=6953&hilit=bolt+list

Some of that is still correct, but some has changed as well.

It was mentioned that Kcnc make a bolt kit, but that's not correct, they make some pulley wheel bolts, and some bottle cage bolts that can be used for mounting front derailleurs, but other than that they don't make any others.

Tiso makes some kits, but they aren't complete. The derailleur kits for example don't include barrel adjusters or limit screws or any of the front derailleur parts.

XX makes some kits too, they are pretty complete (the best kits we've seen up until now). However they use bolts from different sources so the ano isn't always consistent. They are also pretty expensive.

It was also mentioned that most derailleurs are using the lightest bolts already. Again not necessarily the case. With the FnN samples that arrived we did some comparing and found the following changes.

7900, Savings 18grams.
105, Savings 24grams.
Campag10, Savings, 17 grams
CampagSR11, Savings, 14grams
Sram Red, Savings, 6 grams.
Sram Force, Savings 16 grams.

You could go lighter by mixing in the Schmolke bolts, but honestly they aren't very good in most places. On a derailleur about the only place I'd consider them is the pinch bolt and limit screws. (Note, they are quite good as bottle cage bolts and topcap bolts though.)

You can also get more savings by changing pulley wheels.

gumgardner
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by gumgardner

Thanks Madcow. You listed the campy record hardware parts in the earlier post. Are these the same one used for the 2011 Super Record 11sp? Here is the list from the other thread:

Madcow Wrote:
Heres my list of bolts for tuning, maybe it will save some people some time. If anyone has anything to add please post it.

Campy Record

Front Deraileur
Limit screws M3x16mm X2 (Button)
Pivot screw M4x6mm (Button)
Cage Screw M4x6mm (Button)
Mount bolt M5x14mm (socket head)
Pinch bolt M5x8mm (Tapered socket head)

Rear Deraileur
Limit screws M4x14mm X2 (modified button)
Pinch bolt M5x8mm (Tapered socket head)

Ergo Shifter
Pivot fixing bolt M4x22 (Socket head)
Ergo Mount M6x10-12mm(Brake mount nut)

Brakes
Pinch bolt M6x8mm (socket head)

Misc Campy
Downtube brz-on M5x8mm (button head)
Cable guide M5x6-8mm(button head)
crank bolts M8x24mm

dereksmalls
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Location: New Zealand

by dereksmalls

So are the bolt details in this thread still the correct ones to get to do it yourself for Campag Record or am I better off forking out for a Far Near kit - even though I don't need the pulley wheels or bolts as I've got after market there already?

If not, has anyone got an up to date list of do it yourself bolts to get and from where? Comparing the below measures to somewhere like Jersey cycles and none of the sizes seem to match up unless I'm reading it all wrong

austke
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by austke

Can somebody clarify if these kits (e.g. xx) are titanium bolts or al?

Cheers Ken
2013 Giant TCR Advanced SL 0, 6.92kg
2013 Giant Defy Composite 2 M, 8.5kg - Wife's
Azzurro Torino 8.55g
Fuji 650 10.8kg
Miele Lupa Triple Tandem 38,89kg

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Frankie - B
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by Frankie - B

Seeing that Ti is heavier then AL we can safely assume that the kits are AL.
'Tape was made to wrap your GF's gifts, NOT hold a freakin tire on.'

austke
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Location: Queensland Australia

by austke

Frankie - B wrote:Seeing that Ti is heavier then AL we can safely assume that the kits are AL.


Sorry, I was side tracked by the OP saying he thought that SR 11 were already AL, (and therfore wrongly presumed he may be chasing Ti bolt kits, Being a beginner WW and sick also probably doesn't help.

Austke
2013 Giant TCR Advanced SL 0, 6.92kg
2013 Giant Defy Composite 2 M, 8.5kg - Wife's
Azzurro Torino 8.55g
Fuji 650 10.8kg
Miele Lupa Triple Tandem 38,89kg

by Weenie


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mellowJohnny
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by mellowJohnny

Side question: are they any bolts you would not tune based purely on safety? I have rarely seen anyone talking about AL stem bolts, I assume for good reason.

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