Enduro/AM - The Weight Game

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Enduro/AM - The Weight Game
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flag crs-one
Posted: Nov 2, 2021 at 16:40 Quote
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.
flag badbadleroybrown
Posted: Nov 2, 2021 at 16:45 Quote
crs-one wrote:
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.
Titanium is like 60% heavier than aluminum so, unless it's a bolt that's large enough to take advantage of titanium being stronger and needing less material, aluminum bolts are usually lighter.
flag tomhoward379
Posted: Nov 2, 2021 at 16:53 Quote
Building up a trail/AM/Enduro hardtail, after some 29" 30mm rims for it, what should I be looking for?

Wants:
Carbon, cos I'm a tart
Lightish, cos this is the weight game thread
Available this year, in the UK, as rim only
£1000-1200 for a pair

Considered so far:
Reserve 30 & 30SL - 6 month plus wait
Zipp 3-zero - bit heavy?
WTB CZR - unknown quantity, but reviews seem positive and can be had for £750/pair
WAO union - bit heavy, possible overkill for my needs
Stans Flow CB7 - 29mm (can live with that) reasonable weight, stock may be an issue

Thoughts? any other ideas?
flag fredro
Posted: Nov 2, 2021 at 17:01 Quote
badbadleroybrown wrote:
crs-one wrote:
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.
Titanium is like 60% heavier than aluminum so, unless it's a bolt that's large enough to take advantage of titanium being stronger and needing less material, aluminum bolts are usually lighter.

I always thought the opposite...I thought ti was lighter than alu... I R Dum Redface
flag fredro
Posted: Nov 2, 2021 at 17:04 Quote
tomhoward379 wrote:
Building up a trail/AM/Enduro hardtail, after some 29" 30mm rims for it, what should I be looking for?

Wants:
Carbon, cos I'm a tart
Lightish, cos this is the weight game thread
Available this year, in the UK, as rim only
£1000-1200 for a pair

Considered so far:
Reserve 30 & 30SL - 6 month plus wait
Zipp 3-zero - bit heavy?
WTB CZR - unknown quantity, but reviews seem positive and can be had for £750/pair
WAO union - bit heavy, possible overkill for my needs
Stans Flow CB7 - 29mm (can live with that) reasonable weight, stock may be an issue

Thoughts? any other ideas?

I have two sets of Zipps and I like em a lot!
Just ordered WAO unions for new ebike build.
flag Circe
Posted: Nov 2, 2021 at 17:29 Quote
crs-one wrote:
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.

I just died. That was funny AF
flag captainbringdown
Mod
Posted: Nov 2, 2021 at 17:30 Quote
fredro wrote:
badbadleroybrown wrote:
crs-one wrote:
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.
Titanium is like 60% heavier than aluminum so, unless it's a bolt that's large enough to take advantage of titanium being stronger and needing less material, aluminum bolts are usually lighter.

I always thought the opposite...I thought ti was lighter than alu... I R Dum Redface

Larger items, you can use less material(/eventually the less material will equal less weight) - that said I think it's almost twice as dense perhaps as BBLB suggests so once you pass that size/material threshold to make up the initial small part penalty. Bolts are a hard place to use less material.
flag badbadleroybrown
Posted: Nov 2, 2021 at 17:43 Quote
fredro wrote:
badbadleroybrown wrote:
crs-one wrote:
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.
Titanium is like 60% heavier than aluminum so, unless it's a bolt that's large enough to take advantage of titanium being stronger and needing less material, aluminum bolts are usually lighter.

I always thought the opposite...I thought ti was lighter than alu... I R Dum Redface
In most applications, it is... because it's substantially stronger so you can use less material to get the strength you need out of the finished part.

But when you talk about small parts where you really can't use less material it loses that advantage. I don't recall the exact numbers but aluminum is just under 3g/cm3 and titanium is just over 4g/cm3.
flag crs-one
Posted: Nov 2, 2021 at 19:08 Quote
badbadleroybrown wrote:
crs-one wrote:
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.
Titanium is like 60% heavier than aluminum so, unless it's a bolt that's large enough to take advantage of titanium being stronger and needing less material, aluminum bolts are usually lighter.

Yeah, but titanium is just cooler and that has to count for something.

Anyway you know I fired that aluminum boy back in there. No time for feelings in the weight game.
flag Twenty6ers4life
O+
Posted: Nov 2, 2021 at 19:26 Quote
badbadleroybrown wrote:
fredro wrote:
badbadleroybrown wrote:

Titanium is like 60% heavier than aluminum so, unless it's a bolt that's large enough to take advantage of titanium being stronger and needing less material, aluminum bolts are usually lighter.

I always thought the opposite...I thought ti was lighter than alu... I R Dum Redface
In most applications, it is... because it's substantially stronger so you can use less material to get the strength you need out of the finished part.

But when you talk about small parts where you really can't use less material it loses that advantage. I don't recall the exact numbers but aluminum is just under 3g/cm3 and titanium is just over 4g/cm3.

This is why I use ti bolts for load bearing applications, like stems and suspension, and aluminum for non load bearing applications that don’t take a lot of torque, like brake levers, seatpost clamps etc.
flag Twenty6ers4life
O+
Posted: Nov 2, 2021 at 19:31 Quote
crs-one wrote:
badbadleroybrown wrote:
crs-one wrote:
Man. Last week I bought a titanium bolt for my brake lever only to discover the stock bolt is aluminum and lighter. And I can't even come to this thread for support because you f*cks are re-enacting a Thanksgiving dinner.
Titanium is like 60% heavier than aluminum so, unless it's a bolt that's large enough to take advantage of titanium being stronger and needing less material, aluminum bolts are usually lighter.

Yeah, but titanium is just cooler and that has to count for something.

Anyway you know I fired that aluminum boy back in there. No time for feelings in the weight game.

They’re both cool, but you can get aluminum anodized in several colors, some fade from sun though. Ti looks good natural, but can also be had in rainbow or black.
flag swan3609
O+
Posted: Nov 2, 2021 at 20:14 Quote
So today marks the 1 year anniversary of my Levo being pulled out of the box, me looking at it and then hanging it up at that shop.. And it still hangs there today. That's depressing.
flag PHeller
O+
Posted: Nov 2, 2021 at 20:20 Quote
tomhoward379 wrote:
Building up a trail/AM/Enduro hardtail, after some 29" 30mm rims for it, what should I be looking for?

Wants:
Carbon, cos I'm a tart
Lightish, cos this is the weight game thread
Available this year, in the UK, as rim only
£1000-1200 for a pair

Considered so far:
Reserve 30 & 30SL - 6 month plus wait
Zipp 3-zero - bit heavy?
WTB CZR - unknown quantity, but reviews seem positive and can be had for £750/pair
WAO union - bit heavy, possible overkill for my needs
Stans Flow CB7 - 29mm (can live with that) reasonable weight, stock may be an issue

Thoughts? any other ideas?

If just getting rims, WAO or Revel, otherwise BTLOS unless you want to be able to send in a broken wheel and have it replaced in full. MTBR has a whole thread on BTLOS rims and not one complaint.
flag Twenty6ers4life
O+
Posted: Nov 2, 2021 at 20:40 Quote
tomhoward379 wrote:
Building up a trail/AM/Enduro hardtail, after some 29" 30mm rims for it, what should I be looking for?

Wants:
Carbon, cos I'm a tart
Lightish, cos this is the weight game thread
Available this year, in the UK, as rim only
£1000-1200 for a pair

Considered so far:
Reserve 30 & 30SL - 6 month plus wait
Zipp 3-zero - bit heavy?
WTB CZR - unknown quantity, but reviews seem positive and can be had for £750/pair
WAO union - bit heavy, possible overkill for my needs
Stans Flow CB7 - 29mm (can live with that) reasonable weight, stock may be an issue

Thoughts? any other ideas?

I’m partial to light bikes. I’ve been on them for years and I don’t see a reason to change. They’re light, cheaper than most other carbon rims, (about $170-$190 each rim only last time I checked) they can do custom layups, (heavier or lighter) or water drain holes and different weaves for a different look and I believe they make them for a few of the well known brands, but I don’t remember who off the top of my head.

 


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