Drivetrain Talk

k2fx
Posts
11
Joined
5/17/2024
Location
Roanoke, VA US
5/8/2025 11:29am
k2fx wrote:
I've been running an XT shifter, derailleur & cassette for the better part of a year w/ a steel SRAM chainring & X0 chain. Seems fine...

I've been running an XT shifter, derailleur & cassette for the better part of a year w/ a steel SRAM chainring & X0 chain. Seems fine. Doesn't shift as fast maybe as a full shimano setup but you get the ultra long lasting XO chain with the nice & easy (also cheap compared to GX) Shimano bits.

Tinshield wrote:
Are you doing this because those are the parts you had? Generally, SLX/XT chainrings are steel. Use an XTR chain and you’d have the same durability...

Are you doing this because those are the parts you had? Generally, SLX/XT chainrings are steel. Use an XTR chain and you’d have the same durability with better shifting. SRAM chains are a teeny bit wider. 

Yeah, shifted the shimano parts from a Norco Fluid that had a shimano drivetrain & praxis cranks. I kept the SRAM cranks & chainring I had (I wanted my 165 cranks) but used the shimano parts. Otherwise yeah I'd be fine with that setup. Honestly the main thing is I wanted to avoid paying for pricey GX cassettes but I love the XO chains.

1
SteveC
Posts
1
Joined
12/5/2011
Location
Quincy, MA US
5/22/2025 11:22am
Dave_Camp wrote:

Does anyone have significant mileage on Microshift Advent X?  

it’s light and cheap- curious how it works long term.  

Been using Advent on my two Transitions for years. 9 on the hardtail, 10 on the Smuggler,  which originally came with GX 12 speed, so I lost the 4 low teeth but never looked back…

So much more affordable than replacing the GX, and works great.

1
niklasdr
Posts
1
Joined
3/24/2018
Location
SE
5/22/2025 3:12pm
veefour wrote:

It's even better when paired with an XTR shifter.

What does the XTR do better for you than the XT? 

I have an XTR and am getting a copy setup for my other bike. I heard XT and XTR were the same performance just that XTR is a few grams lighter or something 🤷‍♂️

brash
Posts
952
Joined
4/24/2019
Location
AU
5/22/2025 3:54pm
veefour wrote:

It's even better when paired with an XTR shifter.

niklasdr wrote:
What does the XTR do better for you than the XT? I have an XTR and am getting a copy setup for my other bike. I heard...

What does the XTR do better for you than the XT? 

I have an XTR and am getting a copy setup for my other bike. I heard XT and XTR were the same performance just that XTR is a few grams lighter or something 🤷‍♂️

somehow over the years through mates rates and beer economy my e-bikes whole drivetrain has ended up XTR, it's hard to explain but full XTR shifts like I imagine a Porsche 911 GT3 RS, where XT shifts like a DSG golf. Both excellent, but the XTR just has this wholesome bang into the next gear that gives me a mechanical hard on lol

veefour
Posts
855
Joined
7/31/2016
Location
Cinderford GB
5/23/2025 2:29am
veefour wrote:

It's even better when paired with an XTR shifter.

niklasdr wrote:
What does the XTR do better for you than the XT? I have an XTR and am getting a copy setup for my other bike. I heard...

What does the XTR do better for you than the XT? 

I have an XTR and am getting a copy setup for my other bike. I heard XT and XTR were the same performance just that XTR is a few grams lighter or something 🤷‍♂️

brash wrote:
somehow over the years through mates rates and beer economy my e-bikes whole drivetrain has ended up XTR, it's hard to explain but full XTR shifts...

somehow over the years through mates rates and beer economy my e-bikes whole drivetrain has ended up XTR, it's hard to explain but full XTR shifts like I imagine a Porsche 911 GT3 RS, where XT shifts like a DSG golf. Both excellent, but the XTR just has this wholesome bang into the next gear that gives me a mechanical hard on lol

Yes, it just feels smoother and more refined.

sprungmass
Posts
240
Joined
3/1/2023
Location
Calgary, AB CA
5/23/2025 9:16am

Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure any stretch using the approved Park Tool CC-4. I have 150,000M+ vert, 2000+ KM and 400+ hours on it. The cassette looks new and so does the chain. I thought my previous XX1 chains were impressive but this is on a whole new level.

Another thing I noticed is that XXSL, XX, XO and GX chains are all hard chromed this time so technically they should all have the same durability. I remember eagle GX chain used to be black oxide coated and much faster wearing than XX1 and XO1 chrome plated options.

2
Evil96
Posts
819
Joined
8/21/2014
Location
Portogruaro, VE IT
5/23/2025 12:11pm
sprungmass wrote:
Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure...

Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure any stretch using the approved Park Tool CC-4. I have 150,000M+ vert, 2000+ KM and 400+ hours on it. The cassette looks new and so does the chain. I thought my previous XX1 chains were impressive but this is on a whole new level.

Another thing I noticed is that XXSL, XX, XO and GX chains are all hard chromed this time so technically they should all have the same durability. I remember eagle GX chain used to be black oxide coated and much faster wearing than XX1 and XO1 chrome plated options.

Yeah I’d love some data about how long each lasts, with older eagle the more you spent the more you got out of it, but with t-type I’m not sure 

1
5/24/2025 2:56pm Edited Date/Time 5/24/2025 3:10pm
sprungmass wrote:
Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure...

Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure any stretch using the approved Park Tool CC-4. I have 150,000M+ vert, 2000+ KM and 400+ hours on it. The cassette looks new and so does the chain. I thought my previous XX1 chains were impressive but this is on a whole new level.

Another thing I noticed is that XXSL, XX, XO and GX chains are all hard chromed this time so technically they should all have the same durability. I remember eagle GX chain used to be black oxide coated and much faster wearing than XX1 and XO1 chrome plated options.

The XX has a slightly different coating than the others and lasts longer. 

From Zero Friction I think the XX flat top chains last 8000+km before replacement. maybe just double check to see how long they lasted for him, and to note that's with deliberate contamination to increase wear. 

Just checked, they last just under 7000km

https://zerofrictioncycling.com.au/chaintesting/

1
Primoz
Posts
4617
Joined
8/1/2009
Location
SI
5/24/2025 11:58pm

As far as I remember XX has a hard chrome coating, but XO (and GX) doesn't while for Eagle X01 did and GX didn't.

How are you lubricating it? I ran X01 chains for about a year and ~80k vert before replacing them with the last one being left on the bike for 2 years (pretty worn cassette and chainring, ready to be replaced, the chain did ~160k vert), but being lubricated with wax (first Tru-Tension, then Squirt I think), it wasn't worn after 2 seasons. Lubrication really matters and wax improves things a lot apparently.

sprungmass
Posts
240
Joined
3/1/2023
Location
Calgary, AB CA
5/25/2025 4:04pm
sprungmass wrote:
Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure...

Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure any stretch using the approved Park Tool CC-4. I have 150,000M+ vert, 2000+ KM and 400+ hours on it. The cassette looks new and so does the chain. I thought my previous XX1 chains were impressive but this is on a whole new level.

Another thing I noticed is that XXSL, XX, XO and GX chains are all hard chromed this time so technically they should all have the same durability. I remember eagle GX chain used to be black oxide coated and much faster wearing than XX1 and XO1 chrome plated options.

The XX has a slightly different coating than the others and lasts longer. From Zero Friction I think the XX flat top chains last 8000+km before replacement...

The XX has a slightly different coating than the others and lasts longer. 

From Zero Friction I think the XX flat top chains last 8000+km before replacement. maybe just double check to see how long they lasted for him, and to note that's with deliberate contamination to increase wear. 

Just checked, they last just under 7000km

https://zerofrictioncycling.com.au/chaintesting/

I looked at this too and the data by Zero Friction is still partial for these t-type chains. This is why the actual wear is not listed in the "Chain wear test results" graphs below. You can see this in the foot notes where wear life for flat top has not been able to be completed at the time of releasing this graph. Only XX1 and XO1 chain data is finalized and published.

1
sprungmass
Posts
240
Joined
3/1/2023
Location
Calgary, AB CA
5/25/2025 4:12pm
Primoz wrote:
As far as I remember XX has a hard chrome coating, but XO (and GX) doesn't while for Eagle X01 did and GX didn't.How are you...

As far as I remember XX has a hard chrome coating, but XO (and GX) doesn't while for Eagle X01 did and GX didn't.

How are you lubricating it? I ran X01 chains for about a year and ~80k vert before replacing them with the last one being left on the bike for 2 years (pretty worn cassette and chainring, ready to be replaced, the chain did ~160k vert), but being lubricated with wax (first Tru-Tension, then Squirt I think), it wasn't worn after 2 seasons. Lubrication really matters and wax improves things a lot apparently.

I thought so too until I saw SRAM's website. All of them have Chrome hardened inner link finish and Nickel outer. There difference being solid pin on cheaper ones vs hollow pin for the XX and XXSL

https://www.sram.com/en/sram/models/cn-ttyp-xxsl-a1
https://www.sram.com/en/sram/models/cn-ttyp-xx-a1
https://www.sram.com/en/sram/models/cn-ttyp-x0-a1
https://www.sram.com/en/sram/models/cn-ttyp-gx-a1

My lubrication is similar to yours. I use Silca blend immersion wax on new stripped chain and then top it off with Silca super secret. Conditions are usually very dusty here in the mountains and in winter I ride in snow. After nerding out on drip waxes I finally settled on Silca SS as being the best reasonably priced option. Squirt gets black and makes things look dirty so I stopped using it. Momum MIC Wax was my second favorite.

 

2
Friday
Posts
30
Joined
4/25/2025
Location
Atlanta, GA US
5/27/2025 3:02pm

Chalk another one up for 11 speed XT. Been running it since late 2019, and I just have no complaints. The only drivetrain that seems attractive to would be link glide, but those cassettes are pretty damn heavy, and I often find myself only needed to replace one drivetrain part at a time so no need to spend more than I need to. 

6
Primoz
Posts
4617
Joined
8/1/2009
Location
SI
6/5/2025 12:17am

Do you actually need the 32/9 ratio over the 32/10 you have now? I'm running a 30T and really rarely go into the 10T cog. Realistically it would make sense to go for a 28T chainring in the front over a 32T if I was to move away from the 30T. 

Primoz
Posts
4617
Joined
8/1/2009
Location
SI
6/5/2025 12:58am

Hm... My bike is published on my profile. Back in 27,5 inch Giant Reign days climbing was a pain being sat over the rear wheel and that has massively improved with my Previous Bird (a lot steeper seat tube). Specifically on very steep stuff (30+ % pitch). Otherwise everything here is fairly loose as it's limestone based so grip is not the best. This is a specific case where higher cadence as opposed to lower is better as the torque pulses from mashing the pedals are closer together and the spikes are lower (less fluctuation in overall torque output). Pedalling as smoothly and as quickly as possible is the best solution when you are traction limited I find. 

6/5/2025 1:18am
sprungmass wrote:
Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure...

Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure any stretch using the approved Park Tool CC-4. I have 150,000M+ vert, 2000+ KM and 400+ hours on it. The cassette looks new and so does the chain. I thought my previous XX1 chains were impressive but this is on a whole new level.

Another thing I noticed is that XXSL, XX, XO and GX chains are all hard chromed this time so technically they should all have the same durability. I remember eagle GX chain used to be black oxide coated and much faster wearing than XX1 and XO1 chrome plated options.

A friend of mine has worn through 3 t type drivetrains this year......

But his name is Ben Hildred, so he's a bit of a special case.

2
sprungmass
Posts
240
Joined
3/1/2023
Location
Calgary, AB CA
6/5/2025 9:37am
sprungmass wrote:
Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure...

Did anyone here manage to wear out a t-type chain yet? I going into my 3rd season on the same XX chain and I cannot measure any stretch using the approved Park Tool CC-4. I have 150,000M+ vert, 2000+ KM and 400+ hours on it. The cassette looks new and so does the chain. I thought my previous XX1 chains were impressive but this is on a whole new level.

Another thing I noticed is that XXSL, XX, XO and GX chains are all hard chromed this time so technically they should all have the same durability. I remember eagle GX chain used to be black oxide coated and much faster wearing than XX1 and XO1 chrome plated options.

A friend of mine has worn through 3 t type drivetrains this year......

But his name is Ben Hildred, so he's a bit of a special case.

hahaha of course! A million feet of climbing in 100 days would do that. 

ballz
Posts
518
Joined
7/30/2024
Location
Ouagadougou EH
6/18/2025 1:41pm

So a kilo of unsprung weight with the XT groupset, oof.

1
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