Eagle Transmission Issue

[Dave_B]

While I’ve been rebuilding the bike, I’ve had the rear wheel on and off a few times. Each time, when I test the shifting, it needs adjusting. It makes a lot of
Noise and I can see that it is trying to shift down a gear (to a larger cog). I’ve had to reset up the mech every time.

 

[Zimmerframe]

You've also had the mech off each time ?

You would imagine it would all line up the same each time, but maybe not ?!?!

 

[Mikerb]

are you torqueing the thru axle to the same torque each time??

 

[Dave_B]

No l‘m not, just hand tight each time. Do I. Need to?

 

[RustyIron]

When you "reset up," does that mean that you have to reprogram, or merely that you have to run the derailleur to each end of its travel? I could be mistaken, but doesn't the derailleur read its position off the cassette? If you take it apart and the derailleur "gets lost," then it makes sense that it would need to "re-find" itself by going to the limit of its travel. If you have to manually reprogram it every time you take off the wheel, then that's just stupid. Fixing a flat on the trail and then having to reprogram your bike is just adding insult to injury.

 

[Mikerb]

No l‘m not, just hand tight each time. Do I. Need to?

just thinking that the chainstays are invariably slightly wider than the hub so the correct torque would bring the chainstay carrying the mech to the same position each time.

 

[Mikerb]

When you "reset up," does that mean that you have to reprogram, or merely that you have to run the derailleur to each end of its travel? I could be mistaken, but doesn't the derailleur read its position off the cassette? If you take it apart and the derailleur "gets lost," then it makes sense that it would need to "re-find" itself by going to the limit of its travel. If you have to manually reprogram it every time you take off the wheel, then that's just stupid. Fixing a flat on the trail and then having to reprogram your bike is just adding insult to injury.

I dont think it is any different to AXS is it? you fix the AXS mech to ( in this case) the UDH with the mech in its fully outboard position. Provided it is them teamed up with an Eagle cassette it know how to change from the highest ( smallest) gear to the lowest. The position of the mech in relation to the cassette remains the same every time you remove/refit the rear wheel provided the drive side chainstay maintains the same relative position to the cassette.............the only way I can see that may change is if the thru axle is not secured to the same torque each time. My thru axle is the lever type but I know how much pressure I need on it to achieve 15nm..........its a bout as much as is possible by hand with such a short lever!

 

[Dave_B]

When I say ‘re setup’. I mean I have to loosen the mech, put it in 7th gear (cog with the red band), put the mech in the chain setup position, apply chain tension and torque up to 25nm, then tighten the through axle, then release the mech from the setup position.

With the old AXS, the through axle torque was never an issue, hand tight and it’s good.

Does Eagle Transmission need the axle to be 15nm ? Lol. I don’t carry a torque wrench with me on the trail

 

[Zimmerframe]

torque up to 25nm

I thought the Transmission Torqued to 35nm, it was the prototypes and some early production units which were were printed 25nm ?

 

[Dave_B]

Ah OK. Didn’t know that. Mine says 25Nm on it.

 

[steve_sordy]

@Dave_B I had an Eagle transmission on a Whyte T130 and I never had that problem

 

[Dave_B]

the new one @steve_sordy ?
(you say 'had'....it's only just been released, was the bike short lived or something )

 

[steve_sordy]

the new one @steve_sordy ?
(you say 'had'....it's only just been released, was the bike short lived or something )

Oh dear, you meant the latest EAGLE TRANSMISSION, not the transmission that was Eagle.

 

[Dave_B]

indeed

 

[Paulquattro]

Oh dear, you meant the latest EAGLE TRANSMISSION, not the transmission that was Eagle.

Hi
He should have put T-Type

 

[Zimmerframe]

I think the original Eagle is/was called Eagle Drive Train .. the new one is "Transmission" .. That's SRAM's differentiation/Promotion of it from drive train to now a whole transmission ...

Though in fairness, Steve's been around a while so for him an Eagle Transmission could be a high end version of a carrier pigeon.

 

[steve_sordy]

......................

Though in fairness, Steve's been around a while so for him an Eagle Transmission could be a high end version of a carrier pigeon.

With legs like mine, I could have been a carrier pigeon!

 

[steve_sordy]

I think the original Eagle is/was called Eagle Drive Train .. the new one is "Transmission" .. That's SRAM's differentiation/Promotion of it from drive train to now a whole transmission ...
............

In English that is a relatively small distinction; I would call it "wordsmithing".

I wonder how it is done in other languages? You only have to look at multi-lingual packaging or warranties to notice that the English section is nearly always much shorter.

 

[DNE87]

You need to torque to the correct spec else there is going to be inconsistencies, it’s pretty vital for the whole system. However, you shouldn’t have to re-setup, you can use the controller trim to move the mech slightly, inboard or outboard whatever way you need, I would make sure the torque is consistent though. It’s not the best drivetrain if your going to be taking your back wheel in and out all the time.

 

[MountainBoy]

You need to torque to the correct spec else there is going to be inconsistencies, it’s pretty vital for the whole system. However, you shouldn’t have to re-setup, you can use the controller trim to move the mech slightly, inboard or outboard whatever way you need, I would make sure the torque is consistent though. It’s not the best drivetrain if your taking going to be taking your back wheel in and out all the time.

I dunno, it sounds like every Eagle "transmission" comes with a rear axle "torque wrench". Once it's properly setup, you just tighten the rear axle until the "transmission" cogs stop making a racket!