According to multiple
reports, SRAM has purchased Amprio, a German manufacturer of electric motors, displays, and batteries. Rumors about SRAM entering the eMTB world have been circulating since 2019, and last June we
spotted what was more than likely a test mule for a new motor at the Tweed Valley EWS.
A large portion of SRAM's drivetrain development and engineering takes place in Schweinfurt, Germany, so the addition of Amprio's resources makes sense from a logistical standpoint. As for what SRAM's motor will look like when it's released, there still aren't any concrete details.
Amprio's current motor, the RMAG, delivers 75 – 90 Nm of torque, and provides up to 420% of support at a weight of 2.85 kg. They also have multiple battery options, ranging from 500 to 710 Wh.
Shimano, Bosch, and Brose are currently the most common options for full power eMTBs, with TQ and Fazua gaining ground in the lighter weight segment. It'll be interesting to see what SRAM's offering brings to the table to set them apart from the crowd when that time comes. SRAM declined to comment.
339Nm of torques and 542Nm peak
Sorry but.......
The high torque comes from the hammering motion rather than the motor like in thre difference between trying to loosen a bolt by arm or arm with a hammar, maybe ots something for motor manufacturers to pick up on but they need to think about quieting them which is the challenge
@bogey: SRAM knows very well
that bike brands can't whip up new molds
to accommodate a new motor, so using Shimano motor mount dimensions would make sense.
Way more likely to take market share from Shimano.
Plus, the DIY community would probably have no problem 3D printing little adaptors etc to hold different displays etc and possibly even making batteries from one brand work with the other's motor and controller.
If DIYers were just "Hacking" systems to use Shimano batteries then I think that that would be hard to block retrospectively but obviously they could add something to new batteries to block it. But I don't think that this will be common. The real benefit would be for frame makers to be able to do more than one option of system on frames from the same tooling.
I mean, Ford and Chevy have been making basically the exact same thing as one another for 100+ years. you still cannot simply drop a Chevy engine in a Ford without a whole lot of modification.
My moan wasn’t really about folks getting stuff moved in seriously cold temps or shifting big loads. Just those autopilot dummies who automatically jump into a car for the shortest & simplest journeys. Cripples exempted of course!
If Bosch mounting (for example) became the standard then Shimano would risk being out in the cold. If a standard does emerge then you can bet frame designers would want to jump on it (speaking as a frame designer) so better to be their standard than someone else's and they get bragging rights.
The only catch is that if third party components are spec'ed,
Shimano will not handle warranties directly for that brand, nor guarantee their coverage.
This can be very problematic, especially for brands without much infrastructure
established in international markets.
Shimano has a global presence, that makes service anywhere (relatively) easy,
whereas most bike brands have just one office, in one country, and shipping ebike components
is about the most expensive, slow, logistically complicated thing possible.
I don't really know, @G-Sport said current Amprio uses Shimano mounts, I was reacting to that.
not sure how he knows?
But did they sue SRAM, and everyone else, for making cassettes that fit HyperGlide freehub bodies?
something about this trifecta of countries seems like a bad idea. no clue what it could be......
to dump STEPS in favor of Amprio,
and withhold SRAM and Rockshox product (there are precedents...)
and inadvertently force more full Shimano/Fox builds.
Imagine how awful it’d be if someone made a 4hp motor that could fit where the defunct motors once resided
The key for me is serviceability. If they build the system so it can be serviced properly, new bearings when needed for a start but other parts replaceable then it will stand out significantly, particularly compared to Shimano steps.
-PRO
-Pearl Izumi
-Lazer
-Pioneer Electronics
-Innovative textiles
-Rapala
-Jackal
-G Loomis
These are all in the last 20-30 years, I am sure there are more in their back story...and then there are some things they SHOULD have acquired, like optics, cameras, etc as they tried on their own, and....
Trek does honour warrantees for all the swallowed brands. I have done several Fishers that they helped out on.
I assume you also want uplift and gondolas banned?