12 Speed: Mixing SRAM and Shimano Components

[Ruben101]

6 hours ago, Kom said:

Going to add my experience to this thread of mixing SRAM Eagle Gen 1 components with a new SRAM Gen 2 T-Type AXS Rear derailleur.

My aim was to just change to an AXS T-Type (Transmission) rear derailleur from my  gen 1 GX AXS rear derailleur, still of the hanger fitted type.

The TL:DR is that it works perfectly!

The journey:

1-Removing the hanger and fitting the T-TYPE RD can be weird, it doesnt lock in until you actually fit the rear wheel and thread the thru axle into the mount, otherwise the hanger seems quite sloppy.

2-You need to lookup the key setting for installing the RD, SRAM have a web page for this configuration which advises on the key (A/B), Chain Length and which cog on the cassette to tighten the RD up on for removing slack. 

3-my first hack-i used the AXS thumb shifter from my Gen 1 RD, pairs perfectly, works per normal

4-my second hack-ive kept my OG Eagle 10-50t cassette, 12-speed chain and 32t chainring, but this doesnt actually work-the new T-Type cassettes now have a 2.5mm offset - but with some invention, a 2.5mm shim does adjust the older cassette to index perfectly.

Thats it!

Some Notes:

- the shim behind the cassette compromises the total purchase of the mount, SRAM would say this could lead to failure (so far its working fine for me, have inspected after a couple of rides with no visible wear)

- the firmware on the t-type RD is meant to synchronise with specific pickup points on the new t-type cassettes which allow for smoother shifting. in my experience the way ive installed it is seemless, if not better than my previous AXS RD.

- rapid fire shifting on the t-type RD is no where near as fast as my previous RD, it does this weird laggy change if you fire too many 

 

 

[Bike Dewing]

Is it refered to as a Sramano or ShimSram groupset.?🤔

 

[DieselnDust]

Shimsram2.5 😂