Lengthy earlier than UDH grew to become a well known acronym and widely-adopted customary, our first Patent Patrol sneak peek at SRAM’s direct mount T-type derailleurs illustrated a clearly mechanical Transmission. Now six years later, patent places of work simply printed an up to date SRAM mechanical T-type utility. And on the similar time, bike vendor websites have been trickling out leaked specs for not one, however two completely different SRAM mechanical Transmissions.
It appears like we’re on the verge of seeing 2 all-new extra reasonably priced mechanical shift SRAM Transmissions. Are mechanical SRAM NX Eagle Transmission and SRAM SX Eagle Transmissions coming very quickly?
SRAM Mechanical T-Kind Transmission derailleurs very quickly!
The key of the brand new SRAM Mechanical T-Kind Transmission broke first with references to a “SRAM Eagle 70 Transmission”. However how did we get right here?
Certain, we noticed a direct-mount mechanical SRM derailleur all the way in which again in 2018 with that first patent submitting. However then, there was no extra concrete point out of mechanical shifting for six years, whereas SRAM pushed their UDH customary out onto tons of off-road bikes and used the T-type mount as a gross sales driver for his or her high wi-fi AXS digital drivetrains – first for XX SL, XX & X01, then extra attainable GX AXS earlier than going gravel with Purple XPLR AXS. And, most affordably however nonetheless digital for OEM-only as S1000 AXS, simply final summer time.
So what’s Eagle 70 Transmission?
We learn rumors of ’70 Transmission’ as early as September final yr, however didn’t actually have a lot affirmation as to what that meant. And I hadn’t seen it written in any publicly accessible house till this previous month. Digging deeper into upcoming bike specs on-line although, I uncovered a second – seemingly appropriate – reference to “Sram Eagle 90 Transmission”.
That’s when it actually began to click on.
Each 70- & 90-level specs embrace a reference to a “Single-Click on” shifter. And there’s importantly no cross reference to any AXS (wi-fi), all however confirming that that is mechanical shifting, not digital. A number of the mixed-level specs check with an NX derailleur – historically slightly below GX within the SRAM hierarchy. And a few say simply Eagle 70, which may very well be the OEM-only SX stage?
Apparently, it does appear that 70 Transmission is backward appropriate with the present AXS Transmission. And a few of you could have already got the brand new – in all probability lower-priced – parts in your (e)bikes. Particularly, it appears like some MY25 Bulls eMTBs with SRAM GX AXS digital drivetrains could have already been spec’d with the brand new ‘Eagle 70 Transmission’ cassettes, possible as a value financial savings software.
What’s new on this newest SRAM Mechanical Transmission patent?
The language of patent purposes is all the time fairly dense, and sometimes arduous to parse. However one key distinction since we first noticed a mechanical derailleur in SRAM’s direct mount T-type Transmission filings, is that this new US20240246634A1 utility (and to be truthful, just a few others since) is now really for the derailleur, not the direct mounting interface, like a number of earlier filings we now have coated. The illustrations although, are similar to we’d seen earlier than.
That stated, just a few different earlier patents additionally immediately addressed this “Rear gearshift mechanism for coaxial set up” resolution. What’s new since these so far as I can inform, is SRAM is now defining extra clearly how the brand new direct-mount derailleur butts up immediately in opposition to the rear wheel’s axle endcap, and higher guides it into place. This may very well be an replace for simpler wheel set up. Or it may probably treatment the difficulty the place present T-type derailleurs might be poorly aligned or misaligned within the body due to the crash-proofing slip design that enables them to rotate out of the way in which of an influence. However since there isn’t a standard B-tension screw, it isn’t all the time straightforward to be 100% certain that the derailleur is accurately realigned after such an influence.
Apparently, regardless that the T-type direct-mount ought to guarantee ‘good’ cassette alignment like with AXS Transmission, it appears like these new SRAM Mechanical Transmission derailleurs will get hello/low modify screws once more, primarily based on the entire patent drawings.
I believe we’ll have to attend for the ultimate SRAM Mechanical Transmission launch to get into these particulars.
When is it coming?
I’m not going to out any bike manufacturers right here, as a result of that doesn’t add something to this still-developing story…
However what I can say is, there may be at the least one huge bike model on the market with product web page proper now promising a brand new spec of a present mannequin with “New SRAM Eagle Transmission” set to be accessible from March 27, 2025.
And the way a lot will it value?
That new spec additionally occurs to promote for a full 2000€ lower than the identical mannequin spec’d with a SRAM GX AXS Transmission (extra premium suspension spec, but in addition nonetheless alloy wheels).
A SRAM GX AXS improve equipment solely prices you about 600-650€, so clearly you aren’t going to avoid wasting two grand with a mechanical SRAM Transmission. However what it in all probability means is that you simply’ll begin to see Transmission-equipped bikes and ebikes promoting across the similar pricing stage as you’ll see with present mechanical GX Eagle and even cheaper than Shimano XT.
SRAM.com
